1ccd979bdSMark Fasheh /* -*- mode: c; c-basic-offset: 8; -*- 2ccd979bdSMark Fasheh * vim: noexpandtab sw=8 ts=8 sts=0: 3ccd979bdSMark Fasheh * 4ccd979bdSMark Fasheh * super.c 5ccd979bdSMark Fasheh * 6ccd979bdSMark Fasheh * load/unload driver, mount/dismount volumes 7ccd979bdSMark Fasheh * 8ccd979bdSMark Fasheh * Copyright (C) 2002, 2004 Oracle. All rights reserved. 9ccd979bdSMark Fasheh * 10ccd979bdSMark Fasheh * This program is free software; you can redistribute it and/or 11ccd979bdSMark Fasheh * modify it under the terms of the GNU General Public 12ccd979bdSMark Fasheh * License as published by the Free Software Foundation; either 13ccd979bdSMark Fasheh * version 2 of the License, or (at your option) any later version. 14ccd979bdSMark Fasheh * 15ccd979bdSMark Fasheh * This program is distributed in the hope that it will be useful, 16ccd979bdSMark Fasheh * but WITHOUT ANY WARRANTY; without even the implied warranty of 17ccd979bdSMark Fasheh * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18ccd979bdSMark Fasheh * General Public License for more details. 19ccd979bdSMark Fasheh * 20ccd979bdSMark Fasheh * You should have received a copy of the GNU General Public 21ccd979bdSMark Fasheh * License along with this program; if not, write to the 22ccd979bdSMark Fasheh * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 23ccd979bdSMark Fasheh * Boston, MA 021110-1307, USA. 24ccd979bdSMark Fasheh */ 25ccd979bdSMark Fasheh 26ccd979bdSMark Fasheh #include <linux/module.h> 27ccd979bdSMark Fasheh #include <linux/fs.h> 28ccd979bdSMark Fasheh #include <linux/types.h> 29ccd979bdSMark Fasheh #include <linux/slab.h> 30ccd979bdSMark Fasheh #include <linux/highmem.h> 31ccd979bdSMark Fasheh #include <linux/utsname.h> 32ccd979bdSMark Fasheh #include <linux/init.h> 33ccd979bdSMark Fasheh #include <linux/random.h> 34ccd979bdSMark Fasheh #include <linux/statfs.h> 35ccd979bdSMark Fasheh #include <linux/moduleparam.h> 36ccd979bdSMark Fasheh #include <linux/blkdev.h> 37ccd979bdSMark Fasheh #include <linux/socket.h> 38ccd979bdSMark Fasheh #include <linux/inet.h> 39ccd979bdSMark Fasheh #include <linux/parser.h> 40ccd979bdSMark Fasheh #include <linux/crc32.h> 41ccd979bdSMark Fasheh #include <linux/debugfs.h> 42d550071cSSunil Mushran #include <linux/mount.h> 436953b4c0SJoel Becker #include <linux/seq_file.h> 44ccd979bdSMark Fasheh 45ccd979bdSMark Fasheh #define MLOG_MASK_PREFIX ML_SUPER 46ccd979bdSMark Fasheh #include <cluster/masklog.h> 47ccd979bdSMark Fasheh 48ccd979bdSMark Fasheh #include "ocfs2.h" 49ccd979bdSMark Fasheh 50ccd979bdSMark Fasheh /* this should be the only file to include a version 1 header */ 51ccd979bdSMark Fasheh #include "ocfs1_fs_compat.h" 52ccd979bdSMark Fasheh 53ccd979bdSMark Fasheh #include "alloc.h" 54ccd979bdSMark Fasheh #include "dlmglue.h" 55ccd979bdSMark Fasheh #include "export.h" 56ccd979bdSMark Fasheh #include "extent_map.h" 57ccd979bdSMark Fasheh #include "heartbeat.h" 58ccd979bdSMark Fasheh #include "inode.h" 59ccd979bdSMark Fasheh #include "journal.h" 60ccd979bdSMark Fasheh #include "localalloc.h" 61ccd979bdSMark Fasheh #include "namei.h" 62ccd979bdSMark Fasheh #include "slot_map.h" 63ccd979bdSMark Fasheh #include "super.h" 64ccd979bdSMark Fasheh #include "sysfile.h" 65ccd979bdSMark Fasheh #include "uptodate.h" 66ccd979bdSMark Fasheh #include "ver.h" 67ccd979bdSMark Fasheh 68ccd979bdSMark Fasheh #include "buffer_head_io.h" 69ccd979bdSMark Fasheh 70e18b890bSChristoph Lameter static struct kmem_cache *ocfs2_inode_cachep = NULL; 71ccd979bdSMark Fasheh 72ccd979bdSMark Fasheh /* OCFS2 needs to schedule several differnt types of work which 73ccd979bdSMark Fasheh * require cluster locking, disk I/O, recovery waits, etc. Since these 74ccd979bdSMark Fasheh * types of work tend to be heavy we avoid using the kernel events 75ccd979bdSMark Fasheh * workqueue and schedule on our own. */ 76ccd979bdSMark Fasheh struct workqueue_struct *ocfs2_wq = NULL; 77ccd979bdSMark Fasheh 78ccd979bdSMark Fasheh static struct dentry *ocfs2_debugfs_root = NULL; 79ccd979bdSMark Fasheh 80ccd979bdSMark Fasheh MODULE_AUTHOR("Oracle"); 81ccd979bdSMark Fasheh MODULE_LICENSE("GPL"); 82ccd979bdSMark Fasheh 83c0123adeSTiger Yang struct mount_options 84c0123adeSTiger Yang { 85d147b3d6SMark Fasheh unsigned long commit_interval; 86c0123adeSTiger Yang unsigned long mount_opt; 87c0123adeSTiger Yang unsigned int atime_quantum; 88c0123adeSTiger Yang signed short slot; 892fbe8d1eSSunil Mushran unsigned int localalloc_opt; 90b61817e1SJoel Becker char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; 91c0123adeSTiger Yang }; 92c0123adeSTiger Yang 93ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, char *options, 94c0123adeSTiger Yang struct mount_options *mopt, 95baf4661aSSunil Mushran int is_remount); 96d550071cSSunil Mushran static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); 97ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb); 98ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb); 99ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data); 100ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); 101ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void); 102ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void); 103ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb); 104ccd979bdSMark Fasheh 105726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); 106ccd979bdSMark Fasheh 107ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait); 108ccd979bdSMark Fasheh 109ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); 110ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); 111bddb8eb3SDenis Cheng static void ocfs2_release_system_inodes(struct ocfs2_super *osb); 112ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb); 113ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 114ccd979bdSMark Fasheh struct buffer_head *bh, 115ccd979bdSMark Fasheh u32 sectsize); 116ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 117ccd979bdSMark Fasheh struct buffer_head *bh, 118ccd979bdSMark Fasheh int sector_size); 119ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 120ccd979bdSMark Fasheh struct buffer_head **bh, 121ccd979bdSMark Fasheh int block, 122ccd979bdSMark Fasheh int sect_size); 123ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb); 124ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb); 125ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode); 126ccd979bdSMark Fasheh 127ee9b6d61SJosef 'Jeff' Sipek static const struct super_operations ocfs2_sops = { 128ccd979bdSMark Fasheh .statfs = ocfs2_statfs, 129ccd979bdSMark Fasheh .alloc_inode = ocfs2_alloc_inode, 130ccd979bdSMark Fasheh .destroy_inode = ocfs2_destroy_inode, 131ccd979bdSMark Fasheh .drop_inode = ocfs2_drop_inode, 132ccd979bdSMark Fasheh .clear_inode = ocfs2_clear_inode, 133ccd979bdSMark Fasheh .delete_inode = ocfs2_delete_inode, 134ccd979bdSMark Fasheh .sync_fs = ocfs2_sync_fs, 135ccd979bdSMark Fasheh .write_super = ocfs2_write_super, 136ccd979bdSMark Fasheh .put_super = ocfs2_put_super, 137ccd979bdSMark Fasheh .remount_fs = ocfs2_remount, 138d550071cSSunil Mushran .show_options = ocfs2_show_options, 139ccd979bdSMark Fasheh }; 140ccd979bdSMark Fasheh 141ccd979bdSMark Fasheh enum { 142ccd979bdSMark Fasheh Opt_barrier, 143ccd979bdSMark Fasheh Opt_err_panic, 144ccd979bdSMark Fasheh Opt_err_ro, 145ccd979bdSMark Fasheh Opt_intr, 146ccd979bdSMark Fasheh Opt_nointr, 147ccd979bdSMark Fasheh Opt_hb_none, 148ccd979bdSMark Fasheh Opt_hb_local, 149ccd979bdSMark Fasheh Opt_data_ordered, 150ccd979bdSMark Fasheh Opt_data_writeback, 1517f1a37e3STiger Yang Opt_atime_quantum, 152baf4661aSSunil Mushran Opt_slot, 153d147b3d6SMark Fasheh Opt_commit, 1542fbe8d1eSSunil Mushran Opt_localalloc, 15553fc622bSMark Fasheh Opt_localflocks, 156b61817e1SJoel Becker Opt_stack, 157ccd979bdSMark Fasheh Opt_err, 158ccd979bdSMark Fasheh }; 159ccd979bdSMark Fasheh 160a447c093SSteven Whitehouse static const match_table_t tokens = { 161ccd979bdSMark Fasheh {Opt_barrier, "barrier=%u"}, 162ccd979bdSMark Fasheh {Opt_err_panic, "errors=panic"}, 163ccd979bdSMark Fasheh {Opt_err_ro, "errors=remount-ro"}, 164ccd979bdSMark Fasheh {Opt_intr, "intr"}, 165ccd979bdSMark Fasheh {Opt_nointr, "nointr"}, 166ccd979bdSMark Fasheh {Opt_hb_none, OCFS2_HB_NONE}, 167ccd979bdSMark Fasheh {Opt_hb_local, OCFS2_HB_LOCAL}, 168ccd979bdSMark Fasheh {Opt_data_ordered, "data=ordered"}, 169ccd979bdSMark Fasheh {Opt_data_writeback, "data=writeback"}, 1707f1a37e3STiger Yang {Opt_atime_quantum, "atime_quantum=%u"}, 171baf4661aSSunil Mushran {Opt_slot, "preferred_slot=%u"}, 172d147b3d6SMark Fasheh {Opt_commit, "commit=%u"}, 1732fbe8d1eSSunil Mushran {Opt_localalloc, "localalloc=%d"}, 17453fc622bSMark Fasheh {Opt_localflocks, "localflocks"}, 175b61817e1SJoel Becker {Opt_stack, "cluster_stack=%s"}, 176ccd979bdSMark Fasheh {Opt_err, NULL} 177ccd979bdSMark Fasheh }; 178ccd979bdSMark Fasheh 179ccd979bdSMark Fasheh /* 180ccd979bdSMark Fasheh * write_super and sync_fs ripped right out of ext3. 181ccd979bdSMark Fasheh */ 182ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb) 183ccd979bdSMark Fasheh { 1847892f2f4SIngo Molnar if (mutex_trylock(&sb->s_lock) != 0) 185ccd979bdSMark Fasheh BUG(); 186ccd979bdSMark Fasheh sb->s_dirt = 0; 187ccd979bdSMark Fasheh } 188ccd979bdSMark Fasheh 189ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait) 190ccd979bdSMark Fasheh { 191bddb8eb3SDenis Cheng int status; 192ccd979bdSMark Fasheh tid_t target; 193ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 194ccd979bdSMark Fasheh 195ccd979bdSMark Fasheh sb->s_dirt = 0; 196ccd979bdSMark Fasheh 197ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 198ccd979bdSMark Fasheh return -EROFS; 199ccd979bdSMark Fasheh 200ccd979bdSMark Fasheh if (wait) { 201ccd979bdSMark Fasheh status = ocfs2_flush_truncate_log(osb); 202ccd979bdSMark Fasheh if (status < 0) 203ccd979bdSMark Fasheh mlog_errno(status); 204ccd979bdSMark Fasheh } else { 205ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 206ccd979bdSMark Fasheh } 207ccd979bdSMark Fasheh 208ccd979bdSMark Fasheh if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { 209ccd979bdSMark Fasheh if (wait) 210ccd979bdSMark Fasheh log_wait_commit(OCFS2_SB(sb)->journal->j_journal, 211ccd979bdSMark Fasheh target); 212ccd979bdSMark Fasheh } 213ccd979bdSMark Fasheh return 0; 214ccd979bdSMark Fasheh } 215ccd979bdSMark Fasheh 216ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) 217ccd979bdSMark Fasheh { 218ccd979bdSMark Fasheh struct inode *new = NULL; 219ccd979bdSMark Fasheh int status = 0; 220ccd979bdSMark Fasheh int i; 221ccd979bdSMark Fasheh 222ccd979bdSMark Fasheh mlog_entry_void(); 223ccd979bdSMark Fasheh 2245fa0613eSJan Kara new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); 225ccd979bdSMark Fasheh if (IS_ERR(new)) { 226ccd979bdSMark Fasheh status = PTR_ERR(new); 227ccd979bdSMark Fasheh mlog_errno(status); 228ccd979bdSMark Fasheh goto bail; 229ccd979bdSMark Fasheh } 230ccd979bdSMark Fasheh osb->root_inode = new; 231ccd979bdSMark Fasheh 2325fa0613eSJan Kara new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); 233ccd979bdSMark Fasheh if (IS_ERR(new)) { 234ccd979bdSMark Fasheh status = PTR_ERR(new); 235ccd979bdSMark Fasheh mlog_errno(status); 236ccd979bdSMark Fasheh goto bail; 237ccd979bdSMark Fasheh } 238ccd979bdSMark Fasheh osb->sys_root_inode = new; 239ccd979bdSMark Fasheh 240ccd979bdSMark Fasheh for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; 241ccd979bdSMark Fasheh i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { 242ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 243ccd979bdSMark Fasheh if (!new) { 244ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 245ccd979bdSMark Fasheh status = -EINVAL; 246ccd979bdSMark Fasheh mlog_errno(status); 247ccd979bdSMark Fasheh /* FIXME: Should ERROR_RO_FS */ 248ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to load system inode %d, " 249ccd979bdSMark Fasheh "possibly corrupt fs?", i); 250ccd979bdSMark Fasheh goto bail; 251ccd979bdSMark Fasheh } 252ccd979bdSMark Fasheh // the array now has one ref, so drop this one 253ccd979bdSMark Fasheh iput(new); 254ccd979bdSMark Fasheh } 255ccd979bdSMark Fasheh 256ccd979bdSMark Fasheh bail: 257ccd979bdSMark Fasheh mlog_exit(status); 258ccd979bdSMark Fasheh return status; 259ccd979bdSMark Fasheh } 260ccd979bdSMark Fasheh 261ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) 262ccd979bdSMark Fasheh { 263ccd979bdSMark Fasheh struct inode *new = NULL; 264ccd979bdSMark Fasheh int status = 0; 265ccd979bdSMark Fasheh int i; 266ccd979bdSMark Fasheh 267ccd979bdSMark Fasheh mlog_entry_void(); 268ccd979bdSMark Fasheh 269ccd979bdSMark Fasheh for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; 270ccd979bdSMark Fasheh i < NUM_SYSTEM_INODES; 271ccd979bdSMark Fasheh i++) { 272ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 273ccd979bdSMark Fasheh if (!new) { 274ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 275ccd979bdSMark Fasheh status = -EINVAL; 276ccd979bdSMark Fasheh mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", 277ccd979bdSMark Fasheh status, i, osb->slot_num); 278ccd979bdSMark Fasheh goto bail; 279ccd979bdSMark Fasheh } 280ccd979bdSMark Fasheh /* the array now has one ref, so drop this one */ 281ccd979bdSMark Fasheh iput(new); 282ccd979bdSMark Fasheh } 283ccd979bdSMark Fasheh 284ccd979bdSMark Fasheh bail: 285ccd979bdSMark Fasheh mlog_exit(status); 286ccd979bdSMark Fasheh return status; 287ccd979bdSMark Fasheh } 288ccd979bdSMark Fasheh 289bddb8eb3SDenis Cheng static void ocfs2_release_system_inodes(struct ocfs2_super *osb) 290ccd979bdSMark Fasheh { 291bddb8eb3SDenis Cheng int i; 292ccd979bdSMark Fasheh struct inode *inode; 293ccd979bdSMark Fasheh 294ccd979bdSMark Fasheh mlog_entry_void(); 295ccd979bdSMark Fasheh 296ccd979bdSMark Fasheh for (i = 0; i < NUM_SYSTEM_INODES; i++) { 297ccd979bdSMark Fasheh inode = osb->system_inodes[i]; 298ccd979bdSMark Fasheh if (inode) { 299ccd979bdSMark Fasheh iput(inode); 300ccd979bdSMark Fasheh osb->system_inodes[i] = NULL; 301ccd979bdSMark Fasheh } 302ccd979bdSMark Fasheh } 303ccd979bdSMark Fasheh 304ccd979bdSMark Fasheh inode = osb->sys_root_inode; 305ccd979bdSMark Fasheh if (inode) { 306ccd979bdSMark Fasheh iput(inode); 307ccd979bdSMark Fasheh osb->sys_root_inode = NULL; 308ccd979bdSMark Fasheh } 309ccd979bdSMark Fasheh 310ccd979bdSMark Fasheh inode = osb->root_inode; 311ccd979bdSMark Fasheh if (inode) { 312ccd979bdSMark Fasheh iput(inode); 313ccd979bdSMark Fasheh osb->root_inode = NULL; 314ccd979bdSMark Fasheh } 315ccd979bdSMark Fasheh 316bddb8eb3SDenis Cheng mlog_exit(0); 317ccd979bdSMark Fasheh } 318ccd979bdSMark Fasheh 319ccd979bdSMark Fasheh /* We're allocating fs objects, use GFP_NOFS */ 320ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb) 321ccd979bdSMark Fasheh { 322ccd979bdSMark Fasheh struct ocfs2_inode_info *oi; 323ccd979bdSMark Fasheh 324e6b4f8daSChristoph Lameter oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); 325ccd979bdSMark Fasheh if (!oi) 326ccd979bdSMark Fasheh return NULL; 327ccd979bdSMark Fasheh 328ccd979bdSMark Fasheh return &oi->vfs_inode; 329ccd979bdSMark Fasheh } 330ccd979bdSMark Fasheh 331ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode) 332ccd979bdSMark Fasheh { 333ccd979bdSMark Fasheh kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); 334ccd979bdSMark Fasheh } 335ccd979bdSMark Fasheh 3365a254031SMark Fasheh static unsigned long long ocfs2_max_file_offset(unsigned int bbits, 3375a254031SMark Fasheh unsigned int cbits) 338ccd979bdSMark Fasheh { 3395a254031SMark Fasheh unsigned int bytes = 1 << cbits; 3405a254031SMark Fasheh unsigned int trim = bytes; 3415a254031SMark Fasheh unsigned int bitshift = 32; 342ccd979bdSMark Fasheh 3435a254031SMark Fasheh /* 3445a254031SMark Fasheh * i_size and all block offsets in ocfs2 are always 64 bits 3455a254031SMark Fasheh * wide. i_clusters is 32 bits, in cluster-sized units. So on 3465a254031SMark Fasheh * 64 bit platforms, cluster size will be the limiting factor. 347ccd979bdSMark Fasheh */ 348ccd979bdSMark Fasheh 349ccd979bdSMark Fasheh #if BITS_PER_LONG == 32 350ccd979bdSMark Fasheh # if defined(CONFIG_LBD) 3512ecd05aeSAlexey Dobriyan BUILD_BUG_ON(sizeof(sector_t) != 8); 3525a254031SMark Fasheh /* 3535a254031SMark Fasheh * We might be limited by page cache size. 3545a254031SMark Fasheh */ 3555a254031SMark Fasheh if (bytes > PAGE_CACHE_SIZE) { 3565a254031SMark Fasheh bytes = PAGE_CACHE_SIZE; 3575a254031SMark Fasheh trim = 1; 3585a254031SMark Fasheh /* 3595a254031SMark Fasheh * Shift by 31 here so that we don't get larger than 3605a254031SMark Fasheh * MAX_LFS_FILESIZE 3615a254031SMark Fasheh */ 3625a254031SMark Fasheh bitshift = 31; 3635a254031SMark Fasheh } 364ccd979bdSMark Fasheh # else 3655a254031SMark Fasheh /* 3665a254031SMark Fasheh * We are limited by the size of sector_t. Use block size, as 3675a254031SMark Fasheh * that's what we expose to the VFS. 3685a254031SMark Fasheh */ 3695a254031SMark Fasheh bytes = 1 << bbits; 3705a254031SMark Fasheh trim = 1; 3715a254031SMark Fasheh bitshift = 31; 372ccd979bdSMark Fasheh # endif 373ccd979bdSMark Fasheh #endif 374ccd979bdSMark Fasheh 3755a254031SMark Fasheh /* 3765a254031SMark Fasheh * Trim by a whole cluster when we can actually approach the 3775a254031SMark Fasheh * on-disk limits. Otherwise we can overflow i_clusters when 3785a254031SMark Fasheh * an extent start is at the max offset. 3795a254031SMark Fasheh */ 3805a254031SMark Fasheh return (((unsigned long long)bytes) << bitshift) - trim; 381ccd979bdSMark Fasheh } 382ccd979bdSMark Fasheh 383ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data) 384ccd979bdSMark Fasheh { 385ccd979bdSMark Fasheh int incompat_features; 386ccd979bdSMark Fasheh int ret = 0; 387c0123adeSTiger Yang struct mount_options parsed_options; 388ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 389ccd979bdSMark Fasheh 390c0123adeSTiger Yang if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { 391ccd979bdSMark Fasheh ret = -EINVAL; 392ccd979bdSMark Fasheh goto out; 393ccd979bdSMark Fasheh } 394ccd979bdSMark Fasheh 395ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != 396c0123adeSTiger Yang (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 397ccd979bdSMark Fasheh ret = -EINVAL; 398ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); 399ccd979bdSMark Fasheh goto out; 400ccd979bdSMark Fasheh } 401ccd979bdSMark Fasheh 402ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != 403c0123adeSTiger Yang (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { 404ccd979bdSMark Fasheh ret = -EINVAL; 405ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change data mode on remount\n"); 406ccd979bdSMark Fasheh goto out; 407ccd979bdSMark Fasheh } 408ccd979bdSMark Fasheh 409ccd979bdSMark Fasheh /* We're going to/from readonly mode. */ 410ccd979bdSMark Fasheh if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { 411ccd979bdSMark Fasheh /* Lock here so the check of HARD_RO and the potential 412ccd979bdSMark Fasheh * setting of SOFT_RO is atomic. */ 413ccd979bdSMark Fasheh spin_lock(&osb->osb_lock); 414ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_HARD_RO) { 415ccd979bdSMark Fasheh mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); 416ccd979bdSMark Fasheh ret = -EROFS; 417ccd979bdSMark Fasheh goto unlock_osb; 418ccd979bdSMark Fasheh } 419ccd979bdSMark Fasheh 420ccd979bdSMark Fasheh if (*flags & MS_RDONLY) { 421ccd979bdSMark Fasheh mlog(0, "Going to ro mode.\n"); 422ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 423ccd979bdSMark Fasheh osb->osb_flags |= OCFS2_OSB_SOFT_RO; 424ccd979bdSMark Fasheh } else { 425ccd979bdSMark Fasheh mlog(0, "Making ro filesystem writeable.\n"); 426ccd979bdSMark Fasheh 427ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { 428ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR " 429ccd979bdSMark Fasheh "filesystem due to previous errors.\n"); 430ccd979bdSMark Fasheh ret = -EROFS; 431ccd979bdSMark Fasheh goto unlock_osb; 432ccd979bdSMark Fasheh } 433ccd979bdSMark Fasheh incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); 434ccd979bdSMark Fasheh if (incompat_features) { 435ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR because " 436ccd979bdSMark Fasheh "of unsupported optional features " 437ccd979bdSMark Fasheh "(%x).\n", incompat_features); 438ccd979bdSMark Fasheh ret = -EINVAL; 439ccd979bdSMark Fasheh goto unlock_osb; 440ccd979bdSMark Fasheh } 441ccd979bdSMark Fasheh sb->s_flags &= ~MS_RDONLY; 442ccd979bdSMark Fasheh osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; 443ccd979bdSMark Fasheh } 444ccd979bdSMark Fasheh unlock_osb: 445ccd979bdSMark Fasheh spin_unlock(&osb->osb_lock); 446ccd979bdSMark Fasheh } 447ccd979bdSMark Fasheh 448ccd979bdSMark Fasheh if (!ret) { 449ccd979bdSMark Fasheh /* Only save off the new mount options in case of a successful 450ccd979bdSMark Fasheh * remount. */ 451c0123adeSTiger Yang osb->s_mount_opt = parsed_options.mount_opt; 452c0123adeSTiger Yang osb->s_atime_quantum = parsed_options.atime_quantum; 453c0123adeSTiger Yang osb->preferred_slot = parsed_options.slot; 454d147b3d6SMark Fasheh if (parsed_options.commit_interval) 455d147b3d6SMark Fasheh osb->osb_commit_interval = parsed_options.commit_interval; 456e001e796SMark Fasheh 457e001e796SMark Fasheh if (!ocfs2_is_hard_readonly(osb)) 458e001e796SMark Fasheh ocfs2_set_journal_params(osb); 459ccd979bdSMark Fasheh } 460ccd979bdSMark Fasheh out: 461ccd979bdSMark Fasheh return ret; 462ccd979bdSMark Fasheh } 463ccd979bdSMark Fasheh 464ccd979bdSMark Fasheh static int ocfs2_sb_probe(struct super_block *sb, 465ccd979bdSMark Fasheh struct buffer_head **bh, 466ccd979bdSMark Fasheh int *sector_size) 467ccd979bdSMark Fasheh { 468bddb8eb3SDenis Cheng int status, tmpstat; 469ccd979bdSMark Fasheh struct ocfs1_vol_disk_hdr *hdr; 470ccd979bdSMark Fasheh struct ocfs2_dinode *di; 471ccd979bdSMark Fasheh int blksize; 472ccd979bdSMark Fasheh 473ccd979bdSMark Fasheh *bh = NULL; 474ccd979bdSMark Fasheh 475ccd979bdSMark Fasheh /* may be > 512 */ 476ccd979bdSMark Fasheh *sector_size = bdev_hardsect_size(sb->s_bdev); 477ccd979bdSMark Fasheh if (*sector_size > OCFS2_MAX_BLOCKSIZE) { 478ccd979bdSMark Fasheh mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", 479ccd979bdSMark Fasheh *sector_size, OCFS2_MAX_BLOCKSIZE); 480ccd979bdSMark Fasheh status = -EINVAL; 481ccd979bdSMark Fasheh goto bail; 482ccd979bdSMark Fasheh } 483ccd979bdSMark Fasheh 484ccd979bdSMark Fasheh /* Can this really happen? */ 485ccd979bdSMark Fasheh if (*sector_size < OCFS2_MIN_BLOCKSIZE) 486ccd979bdSMark Fasheh *sector_size = OCFS2_MIN_BLOCKSIZE; 487ccd979bdSMark Fasheh 488ccd979bdSMark Fasheh /* check block zero for old format */ 489ccd979bdSMark Fasheh status = ocfs2_get_sector(sb, bh, 0, *sector_size); 490ccd979bdSMark Fasheh if (status < 0) { 491ccd979bdSMark Fasheh mlog_errno(status); 492ccd979bdSMark Fasheh goto bail; 493ccd979bdSMark Fasheh } 494ccd979bdSMark Fasheh hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; 495ccd979bdSMark Fasheh if (hdr->major_version == OCFS1_MAJOR_VERSION) { 496ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible version: %u.%u\n", 497ccd979bdSMark Fasheh hdr->major_version, hdr->minor_version); 498ccd979bdSMark Fasheh status = -EINVAL; 499ccd979bdSMark Fasheh } 500ccd979bdSMark Fasheh if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, 501ccd979bdSMark Fasheh strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { 502ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible volume signature: %8s\n", 503ccd979bdSMark Fasheh hdr->signature); 504ccd979bdSMark Fasheh status = -EINVAL; 505ccd979bdSMark Fasheh } 506ccd979bdSMark Fasheh brelse(*bh); 507ccd979bdSMark Fasheh *bh = NULL; 508ccd979bdSMark Fasheh if (status < 0) { 509ccd979bdSMark Fasheh mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " 510ccd979bdSMark Fasheh "upgraded before mounting with ocfs v2\n"); 511ccd979bdSMark Fasheh goto bail; 512ccd979bdSMark Fasheh } 513ccd979bdSMark Fasheh 514ccd979bdSMark Fasheh /* 515ccd979bdSMark Fasheh * Now check at magic offset for 512, 1024, 2048, 4096 516ccd979bdSMark Fasheh * blocksizes. 4096 is the maximum blocksize because it is 517ccd979bdSMark Fasheh * the minimum clustersize. 518ccd979bdSMark Fasheh */ 519ccd979bdSMark Fasheh status = -EINVAL; 520ccd979bdSMark Fasheh for (blksize = *sector_size; 521ccd979bdSMark Fasheh blksize <= OCFS2_MAX_BLOCKSIZE; 522ccd979bdSMark Fasheh blksize <<= 1) { 523ccd979bdSMark Fasheh tmpstat = ocfs2_get_sector(sb, bh, 524ccd979bdSMark Fasheh OCFS2_SUPER_BLOCK_BLKNO, 525ccd979bdSMark Fasheh blksize); 526ccd979bdSMark Fasheh if (tmpstat < 0) { 527ccd979bdSMark Fasheh status = tmpstat; 528ccd979bdSMark Fasheh mlog_errno(status); 529ccd979bdSMark Fasheh goto bail; 530ccd979bdSMark Fasheh } 531ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) (*bh)->b_data; 532ccd979bdSMark Fasheh status = ocfs2_verify_volume(di, *bh, blksize); 533ccd979bdSMark Fasheh if (status >= 0) 534ccd979bdSMark Fasheh goto bail; 535ccd979bdSMark Fasheh brelse(*bh); 536ccd979bdSMark Fasheh *bh = NULL; 537ccd979bdSMark Fasheh if (status != -EAGAIN) 538ccd979bdSMark Fasheh break; 539ccd979bdSMark Fasheh } 540ccd979bdSMark Fasheh 541ccd979bdSMark Fasheh bail: 542ccd979bdSMark Fasheh return status; 543ccd979bdSMark Fasheh } 544ccd979bdSMark Fasheh 545c271c5c2SSunil Mushran static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) 546c271c5c2SSunil Mushran { 547c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) { 548c271c5c2SSunil Mushran if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 549c271c5c2SSunil Mushran mlog(ML_ERROR, "Cannot heartbeat on a locally " 550c271c5c2SSunil Mushran "mounted device.\n"); 551c271c5c2SSunil Mushran return -EINVAL; 552c271c5c2SSunil Mushran } 553c271c5c2SSunil Mushran } 554c271c5c2SSunil Mushran 555b61817e1SJoel Becker if (ocfs2_userspace_stack(osb)) { 556b61817e1SJoel Becker if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 557b61817e1SJoel Becker mlog(ML_ERROR, "Userspace stack expected, but " 558b61817e1SJoel Becker "o2cb heartbeat arguments passed to mount\n"); 559b61817e1SJoel Becker return -EINVAL; 560b61817e1SJoel Becker } 561b61817e1SJoel Becker } 562b61817e1SJoel Becker 563c271c5c2SSunil Mushran if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 564b61817e1SJoel Becker if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && 565b61817e1SJoel Becker !ocfs2_userspace_stack(osb)) { 566c271c5c2SSunil Mushran mlog(ML_ERROR, "Heartbeat has to be started to mount " 567c271c5c2SSunil Mushran "a read-write clustered device.\n"); 568c271c5c2SSunil Mushran return -EINVAL; 569c271c5c2SSunil Mushran } 570c271c5c2SSunil Mushran } 571c271c5c2SSunil Mushran 572c271c5c2SSunil Mushran return 0; 573c271c5c2SSunil Mushran } 574c271c5c2SSunil Mushran 575b61817e1SJoel Becker /* 576b61817e1SJoel Becker * If we're using a userspace stack, mount should have passed 577b61817e1SJoel Becker * a name that matches the disk. If not, mount should not 578b61817e1SJoel Becker * have passed a stack. 579b61817e1SJoel Becker */ 580b61817e1SJoel Becker static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, 581b61817e1SJoel Becker struct mount_options *mopt) 582b61817e1SJoel Becker { 583b61817e1SJoel Becker if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { 584b61817e1SJoel Becker mlog(ML_ERROR, 585b61817e1SJoel Becker "cluster stack passed to mount, but this filesystem " 586b61817e1SJoel Becker "does not support it\n"); 587b61817e1SJoel Becker return -EINVAL; 588b61817e1SJoel Becker } 589b61817e1SJoel Becker 590b61817e1SJoel Becker if (ocfs2_userspace_stack(osb) && 591b61817e1SJoel Becker strncmp(osb->osb_cluster_stack, mopt->cluster_stack, 592b61817e1SJoel Becker OCFS2_STACK_LABEL_LEN)) { 593b61817e1SJoel Becker mlog(ML_ERROR, 594b61817e1SJoel Becker "cluster stack passed to mount (\"%s\") does not " 595b61817e1SJoel Becker "match the filesystem (\"%s\")\n", 596b61817e1SJoel Becker mopt->cluster_stack, 597b61817e1SJoel Becker osb->osb_cluster_stack); 598b61817e1SJoel Becker return -EINVAL; 599b61817e1SJoel Becker } 600b61817e1SJoel Becker 601b61817e1SJoel Becker return 0; 602b61817e1SJoel Becker } 603b61817e1SJoel Becker 604ccd979bdSMark Fasheh static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) 605ccd979bdSMark Fasheh { 606ccd979bdSMark Fasheh struct dentry *root; 607ccd979bdSMark Fasheh int status, sector_size; 608c0123adeSTiger Yang struct mount_options parsed_options; 609ccd979bdSMark Fasheh struct inode *inode = NULL; 610ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 611ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 612c271c5c2SSunil Mushran char nodestr[8]; 613ccd979bdSMark Fasheh 614ccd979bdSMark Fasheh mlog_entry("%p, %p, %i", sb, data, silent); 615ccd979bdSMark Fasheh 616c0123adeSTiger Yang if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { 617c271c5c2SSunil Mushran status = -EINVAL; 618c271c5c2SSunil Mushran goto read_super_error; 619c271c5c2SSunil Mushran } 620c271c5c2SSunil Mushran 621ccd979bdSMark Fasheh /* probe for superblock */ 622ccd979bdSMark Fasheh status = ocfs2_sb_probe(sb, &bh, §or_size); 623ccd979bdSMark Fasheh if (status < 0) { 624ccd979bdSMark Fasheh mlog(ML_ERROR, "superblock probe failed!\n"); 625ccd979bdSMark Fasheh goto read_super_error; 626ccd979bdSMark Fasheh } 627ccd979bdSMark Fasheh 628ccd979bdSMark Fasheh status = ocfs2_initialize_super(sb, bh, sector_size); 629ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 630ccd979bdSMark Fasheh if (status < 0) { 631ccd979bdSMark Fasheh mlog_errno(status); 632ccd979bdSMark Fasheh goto read_super_error; 633ccd979bdSMark Fasheh } 634ccd979bdSMark Fasheh brelse(bh); 635ccd979bdSMark Fasheh bh = NULL; 636c0123adeSTiger Yang osb->s_mount_opt = parsed_options.mount_opt; 637c0123adeSTiger Yang osb->s_atime_quantum = parsed_options.atime_quantum; 638c0123adeSTiger Yang osb->preferred_slot = parsed_options.slot; 639d147b3d6SMark Fasheh osb->osb_commit_interval = parsed_options.commit_interval; 6409c7af40bSMark Fasheh osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt); 6419c7af40bSMark Fasheh osb->local_alloc_bits = osb->local_alloc_default_bits; 642ccd979bdSMark Fasheh 643b61817e1SJoel Becker status = ocfs2_verify_userspace_stack(osb, &parsed_options); 644b61817e1SJoel Becker if (status) 645b61817e1SJoel Becker goto read_super_error; 646b61817e1SJoel Becker 647ccd979bdSMark Fasheh sb->s_magic = OCFS2_SUPER_MAGIC; 648ccd979bdSMark Fasheh 649ccd979bdSMark Fasheh /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, 650ccd979bdSMark Fasheh * heartbeat=none */ 651ccd979bdSMark Fasheh if (bdev_read_only(sb->s_bdev)) { 652ccd979bdSMark Fasheh if (!(sb->s_flags & MS_RDONLY)) { 653ccd979bdSMark Fasheh status = -EACCES; 654ccd979bdSMark Fasheh mlog(ML_ERROR, "Readonly device detected but readonly " 655ccd979bdSMark Fasheh "mount was not specified.\n"); 656ccd979bdSMark Fasheh goto read_super_error; 657ccd979bdSMark Fasheh } 658ccd979bdSMark Fasheh 659ccd979bdSMark Fasheh /* You should not be able to start a local heartbeat 660ccd979bdSMark Fasheh * on a readonly device. */ 661ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 662ccd979bdSMark Fasheh status = -EROFS; 663ccd979bdSMark Fasheh mlog(ML_ERROR, "Local heartbeat specified on readonly " 664ccd979bdSMark Fasheh "device.\n"); 665ccd979bdSMark Fasheh goto read_super_error; 666ccd979bdSMark Fasheh } 667ccd979bdSMark Fasheh 668ccd979bdSMark Fasheh status = ocfs2_check_journals_nolocks(osb); 669ccd979bdSMark Fasheh if (status < 0) { 670ccd979bdSMark Fasheh if (status == -EROFS) 671ccd979bdSMark Fasheh mlog(ML_ERROR, "Recovery required on readonly " 672ccd979bdSMark Fasheh "file system, but write access is " 673ccd979bdSMark Fasheh "unavailable.\n"); 674ccd979bdSMark Fasheh else 675ccd979bdSMark Fasheh mlog_errno(status); 676ccd979bdSMark Fasheh goto read_super_error; 677ccd979bdSMark Fasheh } 678ccd979bdSMark Fasheh 679ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 1); 680ccd979bdSMark Fasheh 681ccd979bdSMark Fasheh printk(KERN_NOTICE "Readonly device detected. No cluster " 682ccd979bdSMark Fasheh "services will be utilized for this mount. Recovery " 683ccd979bdSMark Fasheh "will be skipped.\n"); 684ccd979bdSMark Fasheh } 685ccd979bdSMark Fasheh 686ccd979bdSMark Fasheh if (!ocfs2_is_hard_readonly(osb)) { 687ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY) 688ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 689ccd979bdSMark Fasheh } 690ccd979bdSMark Fasheh 691c271c5c2SSunil Mushran status = ocfs2_verify_heartbeat(osb); 692c271c5c2SSunil Mushran if (status < 0) { 693c271c5c2SSunil Mushran mlog_errno(status); 694c271c5c2SSunil Mushran goto read_super_error; 695c271c5c2SSunil Mushran } 696c271c5c2SSunil Mushran 697ccd979bdSMark Fasheh osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, 698ccd979bdSMark Fasheh ocfs2_debugfs_root); 699ccd979bdSMark Fasheh if (!osb->osb_debug_root) { 700ccd979bdSMark Fasheh status = -EINVAL; 701ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); 702ccd979bdSMark Fasheh goto read_super_error; 703ccd979bdSMark Fasheh } 704ccd979bdSMark Fasheh 705ccd979bdSMark Fasheh status = ocfs2_mount_volume(sb); 706ccd979bdSMark Fasheh if (osb->root_inode) 707ccd979bdSMark Fasheh inode = igrab(osb->root_inode); 708ccd979bdSMark Fasheh 709ccd979bdSMark Fasheh if (status < 0) 710ccd979bdSMark Fasheh goto read_super_error; 711ccd979bdSMark Fasheh 712ccd979bdSMark Fasheh if (!inode) { 713ccd979bdSMark Fasheh status = -EIO; 714ccd979bdSMark Fasheh mlog_errno(status); 715ccd979bdSMark Fasheh goto read_super_error; 716ccd979bdSMark Fasheh } 717ccd979bdSMark Fasheh 718ccd979bdSMark Fasheh root = d_alloc_root(inode); 719ccd979bdSMark Fasheh if (!root) { 720ccd979bdSMark Fasheh status = -ENOMEM; 721ccd979bdSMark Fasheh mlog_errno(status); 722ccd979bdSMark Fasheh goto read_super_error; 723ccd979bdSMark Fasheh } 724ccd979bdSMark Fasheh 725ccd979bdSMark Fasheh sb->s_root = root; 726ccd979bdSMark Fasheh 727ccd979bdSMark Fasheh ocfs2_complete_mount_recovery(osb); 728ccd979bdSMark Fasheh 729c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 730c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "local"); 731c271c5c2SSunil Mushran else 73219fdb624SJoel Becker snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); 733c271c5c2SSunil Mushran 734c271c5c2SSunil Mushran printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " 735781ee3e2SSunil Mushran "with %s data mode.\n", 736c271c5c2SSunil Mushran osb->dev_str, nodestr, osb->slot_num, 737ccd979bdSMark Fasheh osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : 738ccd979bdSMark Fasheh "ordered"); 739ccd979bdSMark Fasheh 740ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_MOUNTED); 741ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 742ccd979bdSMark Fasheh 743ccd979bdSMark Fasheh mlog_exit(status); 744ccd979bdSMark Fasheh return status; 745ccd979bdSMark Fasheh 746ccd979bdSMark Fasheh read_super_error: 747ccd979bdSMark Fasheh if (bh != NULL) 748ccd979bdSMark Fasheh brelse(bh); 749ccd979bdSMark Fasheh 750ccd979bdSMark Fasheh if (inode) 751ccd979bdSMark Fasheh iput(inode); 752ccd979bdSMark Fasheh 753ccd979bdSMark Fasheh if (osb) { 754ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISABLED); 755ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 756ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 1); 757ccd979bdSMark Fasheh } 758ccd979bdSMark Fasheh 759ccd979bdSMark Fasheh mlog_exit(status); 760ccd979bdSMark Fasheh return status; 761ccd979bdSMark Fasheh } 762ccd979bdSMark Fasheh 763454e2398SDavid Howells static int ocfs2_get_sb(struct file_system_type *fs_type, 764ccd979bdSMark Fasheh int flags, 765ccd979bdSMark Fasheh const char *dev_name, 766454e2398SDavid Howells void *data, 767454e2398SDavid Howells struct vfsmount *mnt) 768ccd979bdSMark Fasheh { 769454e2398SDavid Howells return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, 770454e2398SDavid Howells mnt); 771ccd979bdSMark Fasheh } 772ccd979bdSMark Fasheh 773ccd979bdSMark Fasheh static struct file_system_type ocfs2_fs_type = { 774ccd979bdSMark Fasheh .owner = THIS_MODULE, 775ccd979bdSMark Fasheh .name = "ocfs2", 776ccd979bdSMark Fasheh .get_sb = ocfs2_get_sb, /* is this called when we mount 777ccd979bdSMark Fasheh * the fs? */ 778ccd979bdSMark Fasheh .kill_sb = kill_block_super, /* set to the generic one 779ccd979bdSMark Fasheh * right now, but do we 780ccd979bdSMark Fasheh * need to change that? */ 7811ba9da2fSMark Fasheh .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, 782ccd979bdSMark Fasheh .next = NULL 783ccd979bdSMark Fasheh }; 784ccd979bdSMark Fasheh 785ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, 786ccd979bdSMark Fasheh char *options, 787c0123adeSTiger Yang struct mount_options *mopt, 788ccd979bdSMark Fasheh int is_remount) 789ccd979bdSMark Fasheh { 790ccd979bdSMark Fasheh int status; 791ccd979bdSMark Fasheh char *p; 792ccd979bdSMark Fasheh 793ccd979bdSMark Fasheh mlog_entry("remount: %d, options: \"%s\"\n", is_remount, 794ccd979bdSMark Fasheh options ? options : "(none)"); 795ccd979bdSMark Fasheh 796d147b3d6SMark Fasheh mopt->commit_interval = 0; 797c0123adeSTiger Yang mopt->mount_opt = 0; 798c0123adeSTiger Yang mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; 799c0123adeSTiger Yang mopt->slot = OCFS2_INVALID_SLOT; 8002fbe8d1eSSunil Mushran mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; 801b61817e1SJoel Becker mopt->cluster_stack[0] = '\0'; 802ccd979bdSMark Fasheh 803ccd979bdSMark Fasheh if (!options) { 804ccd979bdSMark Fasheh status = 1; 805ccd979bdSMark Fasheh goto bail; 806ccd979bdSMark Fasheh } 807ccd979bdSMark Fasheh 808ccd979bdSMark Fasheh while ((p = strsep(&options, ",")) != NULL) { 809ccd979bdSMark Fasheh int token, option; 810ccd979bdSMark Fasheh substring_t args[MAX_OPT_ARGS]; 811ccd979bdSMark Fasheh 812ccd979bdSMark Fasheh if (!*p) 813ccd979bdSMark Fasheh continue; 814ccd979bdSMark Fasheh 815ccd979bdSMark Fasheh token = match_token(p, tokens, args); 816ccd979bdSMark Fasheh switch (token) { 817ccd979bdSMark Fasheh case Opt_hb_local: 818c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; 819ccd979bdSMark Fasheh break; 820ccd979bdSMark Fasheh case Opt_hb_none: 821c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; 822ccd979bdSMark Fasheh break; 823ccd979bdSMark Fasheh case Opt_barrier: 824ccd979bdSMark Fasheh if (match_int(&args[0], &option)) { 825ccd979bdSMark Fasheh status = 0; 826ccd979bdSMark Fasheh goto bail; 827ccd979bdSMark Fasheh } 828ccd979bdSMark Fasheh if (option) 829c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_BARRIER; 830ccd979bdSMark Fasheh else 831c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; 832ccd979bdSMark Fasheh break; 833ccd979bdSMark Fasheh case Opt_intr: 834c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; 835ccd979bdSMark Fasheh break; 836ccd979bdSMark Fasheh case Opt_nointr: 837c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_NOINTR; 838ccd979bdSMark Fasheh break; 839ccd979bdSMark Fasheh case Opt_err_panic: 840c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 841ccd979bdSMark Fasheh break; 842ccd979bdSMark Fasheh case Opt_err_ro: 843c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; 844ccd979bdSMark Fasheh break; 845ccd979bdSMark Fasheh case Opt_data_ordered: 846c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; 847ccd979bdSMark Fasheh break; 848ccd979bdSMark Fasheh case Opt_data_writeback: 849c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; 850ccd979bdSMark Fasheh break; 8517f1a37e3STiger Yang case Opt_atime_quantum: 8527f1a37e3STiger Yang if (match_int(&args[0], &option)) { 8537f1a37e3STiger Yang status = 0; 8547f1a37e3STiger Yang goto bail; 8557f1a37e3STiger Yang } 8567f1a37e3STiger Yang if (option >= 0) 857c0123adeSTiger Yang mopt->atime_quantum = option; 8587f1a37e3STiger Yang break; 859baf4661aSSunil Mushran case Opt_slot: 860baf4661aSSunil Mushran option = 0; 861baf4661aSSunil Mushran if (match_int(&args[0], &option)) { 862baf4661aSSunil Mushran status = 0; 863baf4661aSSunil Mushran goto bail; 864baf4661aSSunil Mushran } 865baf4661aSSunil Mushran if (option) 866c0123adeSTiger Yang mopt->slot = (s16)option; 867baf4661aSSunil Mushran break; 868d147b3d6SMark Fasheh case Opt_commit: 869d147b3d6SMark Fasheh option = 0; 870d147b3d6SMark Fasheh if (match_int(&args[0], &option)) { 871d147b3d6SMark Fasheh status = 0; 872d147b3d6SMark Fasheh goto bail; 873d147b3d6SMark Fasheh } 874d147b3d6SMark Fasheh if (option < 0) 875d147b3d6SMark Fasheh return 0; 876d147b3d6SMark Fasheh if (option == 0) 877d147b3d6SMark Fasheh option = JBD_DEFAULT_MAX_COMMIT_AGE; 878d147b3d6SMark Fasheh mopt->commit_interval = HZ * option; 879d147b3d6SMark Fasheh break; 8802fbe8d1eSSunil Mushran case Opt_localalloc: 8812fbe8d1eSSunil Mushran option = 0; 8822fbe8d1eSSunil Mushran if (match_int(&args[0], &option)) { 8832fbe8d1eSSunil Mushran status = 0; 8842fbe8d1eSSunil Mushran goto bail; 8852fbe8d1eSSunil Mushran } 8862fbe8d1eSSunil Mushran if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) 8872fbe8d1eSSunil Mushran mopt->localalloc_opt = option; 8882fbe8d1eSSunil Mushran break; 88953fc622bSMark Fasheh case Opt_localflocks: 89053fc622bSMark Fasheh /* 89153fc622bSMark Fasheh * Changing this during remount could race 89253fc622bSMark Fasheh * flock() requests, or "unbalance" existing 89353fc622bSMark Fasheh * ones (e.g., a lock is taken in one mode but 89453fc622bSMark Fasheh * dropped in the other). If users care enough 89553fc622bSMark Fasheh * to flip locking modes during remount, we 89653fc622bSMark Fasheh * could add a "local" flag to individual 89753fc622bSMark Fasheh * flock structures for proper tracking of 89853fc622bSMark Fasheh * state. 89953fc622bSMark Fasheh */ 90053fc622bSMark Fasheh if (!is_remount) 90153fc622bSMark Fasheh mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; 90253fc622bSMark Fasheh break; 903b61817e1SJoel Becker case Opt_stack: 904b61817e1SJoel Becker /* Check both that the option we were passed 905b61817e1SJoel Becker * is of the right length and that it is a proper 906b61817e1SJoel Becker * string of the right length. 907b61817e1SJoel Becker */ 908b61817e1SJoel Becker if (((args[0].to - args[0].from) != 909b61817e1SJoel Becker OCFS2_STACK_LABEL_LEN) || 910b61817e1SJoel Becker (strnlen(args[0].from, 911b61817e1SJoel Becker OCFS2_STACK_LABEL_LEN) != 912b61817e1SJoel Becker OCFS2_STACK_LABEL_LEN)) { 913b61817e1SJoel Becker mlog(ML_ERROR, 914b61817e1SJoel Becker "Invalid cluster_stack option\n"); 915b61817e1SJoel Becker status = 0; 916b61817e1SJoel Becker goto bail; 917b61817e1SJoel Becker } 918b61817e1SJoel Becker memcpy(mopt->cluster_stack, args[0].from, 919b61817e1SJoel Becker OCFS2_STACK_LABEL_LEN); 920b61817e1SJoel Becker mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; 921b61817e1SJoel Becker break; 922ccd979bdSMark Fasheh default: 923ccd979bdSMark Fasheh mlog(ML_ERROR, 924ccd979bdSMark Fasheh "Unrecognized mount option \"%s\" " 925ccd979bdSMark Fasheh "or missing value\n", p); 926ccd979bdSMark Fasheh status = 0; 927ccd979bdSMark Fasheh goto bail; 928ccd979bdSMark Fasheh } 929ccd979bdSMark Fasheh } 930ccd979bdSMark Fasheh 931ccd979bdSMark Fasheh status = 1; 932ccd979bdSMark Fasheh 933ccd979bdSMark Fasheh bail: 934ccd979bdSMark Fasheh mlog_exit(status); 935ccd979bdSMark Fasheh return status; 936ccd979bdSMark Fasheh } 937ccd979bdSMark Fasheh 938d550071cSSunil Mushran static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) 939d550071cSSunil Mushran { 940d550071cSSunil Mushran struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); 941d550071cSSunil Mushran unsigned long opts = osb->s_mount_opt; 942ebcee4b5SMark Fasheh unsigned int local_alloc_megs; 943d550071cSSunil Mushran 944d550071cSSunil Mushran if (opts & OCFS2_MOUNT_HB_LOCAL) 945d550071cSSunil Mushran seq_printf(s, ",_netdev,heartbeat=local"); 946d550071cSSunil Mushran else 947d550071cSSunil Mushran seq_printf(s, ",heartbeat=none"); 948d550071cSSunil Mushran 949d550071cSSunil Mushran if (opts & OCFS2_MOUNT_NOINTR) 950d550071cSSunil Mushran seq_printf(s, ",nointr"); 951d550071cSSunil Mushran 952d550071cSSunil Mushran if (opts & OCFS2_MOUNT_DATA_WRITEBACK) 953d550071cSSunil Mushran seq_printf(s, ",data=writeback"); 954d550071cSSunil Mushran else 955d550071cSSunil Mushran seq_printf(s, ",data=ordered"); 956d550071cSSunil Mushran 957d550071cSSunil Mushran if (opts & OCFS2_MOUNT_BARRIER) 958d550071cSSunil Mushran seq_printf(s, ",barrier=1"); 959d550071cSSunil Mushran 960d550071cSSunil Mushran if (opts & OCFS2_MOUNT_ERRORS_PANIC) 961d550071cSSunil Mushran seq_printf(s, ",errors=panic"); 962d550071cSSunil Mushran else 963d550071cSSunil Mushran seq_printf(s, ",errors=remount-ro"); 964d550071cSSunil Mushran 965d550071cSSunil Mushran if (osb->preferred_slot != OCFS2_INVALID_SLOT) 966d550071cSSunil Mushran seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); 967d550071cSSunil Mushran 968d550071cSSunil Mushran if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) 969d550071cSSunil Mushran seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); 970d550071cSSunil Mushran 971d147b3d6SMark Fasheh if (osb->osb_commit_interval) 972d147b3d6SMark Fasheh seq_printf(s, ",commit=%u", 973d147b3d6SMark Fasheh (unsigned) (osb->osb_commit_interval / HZ)); 974d147b3d6SMark Fasheh 975ebcee4b5SMark Fasheh local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); 976ebcee4b5SMark Fasheh if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) 977ebcee4b5SMark Fasheh seq_printf(s, ",localalloc=%d", local_alloc_megs); 9782fbe8d1eSSunil Mushran 97953fc622bSMark Fasheh if (opts & OCFS2_MOUNT_LOCALFLOCKS) 98053fc622bSMark Fasheh seq_printf(s, ",localflocks,"); 98153fc622bSMark Fasheh 982b61817e1SJoel Becker if (osb->osb_cluster_stack[0]) 983b61817e1SJoel Becker seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, 984b61817e1SJoel Becker osb->osb_cluster_stack); 985b61817e1SJoel Becker 986d550071cSSunil Mushran return 0; 987d550071cSSunil Mushran } 988d550071cSSunil Mushran 989ccd979bdSMark Fasheh static int __init ocfs2_init(void) 990ccd979bdSMark Fasheh { 991ccd979bdSMark Fasheh int status; 992ccd979bdSMark Fasheh 993ccd979bdSMark Fasheh mlog_entry_void(); 994ccd979bdSMark Fasheh 995ccd979bdSMark Fasheh ocfs2_print_version(); 996ccd979bdSMark Fasheh 997ccd979bdSMark Fasheh status = init_ocfs2_uptodate_cache(); 998ccd979bdSMark Fasheh if (status < 0) { 999ccd979bdSMark Fasheh mlog_errno(status); 1000ccd979bdSMark Fasheh goto leave; 1001ccd979bdSMark Fasheh } 1002ccd979bdSMark Fasheh 1003ccd979bdSMark Fasheh status = ocfs2_initialize_mem_caches(); 1004ccd979bdSMark Fasheh if (status < 0) { 1005ccd979bdSMark Fasheh mlog_errno(status); 1006ccd979bdSMark Fasheh goto leave; 1007ccd979bdSMark Fasheh } 1008ccd979bdSMark Fasheh 1009ccd979bdSMark Fasheh ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); 1010ccd979bdSMark Fasheh if (!ocfs2_wq) { 1011ccd979bdSMark Fasheh status = -ENOMEM; 1012ccd979bdSMark Fasheh goto leave; 1013ccd979bdSMark Fasheh } 1014ccd979bdSMark Fasheh 1015ccd979bdSMark Fasheh ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); 1016ccd979bdSMark Fasheh if (!ocfs2_debugfs_root) { 1017ccd979bdSMark Fasheh status = -EFAULT; 1018ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); 1019ccd979bdSMark Fasheh } 1020ccd979bdSMark Fasheh 102163e0c48aSJoel Becker ocfs2_set_locking_protocol(); 102263e0c48aSJoel Becker 1023ccd979bdSMark Fasheh leave: 1024ccd979bdSMark Fasheh if (status < 0) { 1025ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 1026ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 1027ccd979bdSMark Fasheh } 1028ccd979bdSMark Fasheh 1029ccd979bdSMark Fasheh mlog_exit(status); 1030ccd979bdSMark Fasheh 1031ccd979bdSMark Fasheh if (status >= 0) { 1032ccd979bdSMark Fasheh return register_filesystem(&ocfs2_fs_type); 1033ccd979bdSMark Fasheh } else 1034ccd979bdSMark Fasheh return -1; 1035ccd979bdSMark Fasheh } 1036ccd979bdSMark Fasheh 1037ccd979bdSMark Fasheh static void __exit ocfs2_exit(void) 1038ccd979bdSMark Fasheh { 1039ccd979bdSMark Fasheh mlog_entry_void(); 1040ccd979bdSMark Fasheh 1041ccd979bdSMark Fasheh if (ocfs2_wq) { 1042ccd979bdSMark Fasheh flush_workqueue(ocfs2_wq); 1043ccd979bdSMark Fasheh destroy_workqueue(ocfs2_wq); 1044ccd979bdSMark Fasheh } 1045ccd979bdSMark Fasheh 1046ccd979bdSMark Fasheh debugfs_remove(ocfs2_debugfs_root); 1047ccd979bdSMark Fasheh 1048ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 1049ccd979bdSMark Fasheh 1050ccd979bdSMark Fasheh unregister_filesystem(&ocfs2_fs_type); 1051ccd979bdSMark Fasheh 1052ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 1053ccd979bdSMark Fasheh 1054ccd979bdSMark Fasheh mlog_exit_void(); 1055ccd979bdSMark Fasheh } 1056ccd979bdSMark Fasheh 1057ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb) 1058ccd979bdSMark Fasheh { 1059ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 1060ccd979bdSMark Fasheh 1061ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 1062ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 0); 1063ccd979bdSMark Fasheh 1064ccd979bdSMark Fasheh mlog_exit_void(); 1065ccd979bdSMark Fasheh } 1066ccd979bdSMark Fasheh 1067726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 1068ccd979bdSMark Fasheh { 1069ccd979bdSMark Fasheh struct ocfs2_super *osb; 1070ccd979bdSMark Fasheh u32 numbits, freebits; 1071ccd979bdSMark Fasheh int status; 1072ccd979bdSMark Fasheh struct ocfs2_dinode *bm_lock; 1073ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 1074ccd979bdSMark Fasheh struct inode *inode = NULL; 1075ccd979bdSMark Fasheh 1076726c3342SDavid Howells mlog_entry("(%p, %p)\n", dentry->d_sb, buf); 1077ccd979bdSMark Fasheh 1078726c3342SDavid Howells osb = OCFS2_SB(dentry->d_sb); 1079ccd979bdSMark Fasheh 1080ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, 1081ccd979bdSMark Fasheh GLOBAL_BITMAP_SYSTEM_INODE, 1082ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1083ccd979bdSMark Fasheh if (!inode) { 1084ccd979bdSMark Fasheh mlog(ML_ERROR, "failed to get bitmap inode\n"); 1085ccd979bdSMark Fasheh status = -EIO; 1086ccd979bdSMark Fasheh goto bail; 1087ccd979bdSMark Fasheh } 1088ccd979bdSMark Fasheh 1089e63aecb6SMark Fasheh status = ocfs2_inode_lock(inode, &bh, 0); 1090ccd979bdSMark Fasheh if (status < 0) { 1091ccd979bdSMark Fasheh mlog_errno(status); 1092ccd979bdSMark Fasheh goto bail; 1093ccd979bdSMark Fasheh } 1094ccd979bdSMark Fasheh 1095ccd979bdSMark Fasheh bm_lock = (struct ocfs2_dinode *) bh->b_data; 1096ccd979bdSMark Fasheh 1097ccd979bdSMark Fasheh numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); 1098ccd979bdSMark Fasheh freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); 1099ccd979bdSMark Fasheh 1100ccd979bdSMark Fasheh buf->f_type = OCFS2_SUPER_MAGIC; 1101726c3342SDavid Howells buf->f_bsize = dentry->d_sb->s_blocksize; 1102ccd979bdSMark Fasheh buf->f_namelen = OCFS2_MAX_FILENAME_LEN; 1103ccd979bdSMark Fasheh buf->f_blocks = ((sector_t) numbits) * 1104ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 1105ccd979bdSMark Fasheh buf->f_bfree = ((sector_t) freebits) * 1106ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 1107ccd979bdSMark Fasheh buf->f_bavail = buf->f_bfree; 1108ccd979bdSMark Fasheh buf->f_files = numbits; 1109ccd979bdSMark Fasheh buf->f_ffree = freebits; 1110ccd979bdSMark Fasheh 1111ccd979bdSMark Fasheh brelse(bh); 1112ccd979bdSMark Fasheh 1113e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 0); 1114ccd979bdSMark Fasheh status = 0; 1115ccd979bdSMark Fasheh bail: 1116ccd979bdSMark Fasheh if (inode) 1117ccd979bdSMark Fasheh iput(inode); 1118ccd979bdSMark Fasheh 1119ccd979bdSMark Fasheh mlog_exit(status); 1120ccd979bdSMark Fasheh 1121ccd979bdSMark Fasheh return status; 1122ccd979bdSMark Fasheh } 1123ccd979bdSMark Fasheh 112451cc5068SAlexey Dobriyan static void ocfs2_inode_init_once(void *data) 1125ccd979bdSMark Fasheh { 1126ccd979bdSMark Fasheh struct ocfs2_inode_info *oi = data; 1127ccd979bdSMark Fasheh 1128ccd979bdSMark Fasheh oi->ip_flags = 0; 1129ccd979bdSMark Fasheh oi->ip_open_count = 0; 1130ccd979bdSMark Fasheh spin_lock_init(&oi->ip_lock); 113183418978SMark Fasheh ocfs2_extent_map_init(&oi->vfs_inode); 1132ccd979bdSMark Fasheh INIT_LIST_HEAD(&oi->ip_io_markers); 1133ccd979bdSMark Fasheh oi->ip_created_trans = 0; 1134ccd979bdSMark Fasheh oi->ip_last_trans = 0; 1135ccd979bdSMark Fasheh oi->ip_dir_start_lookup = 0; 1136ccd979bdSMark Fasheh 1137ccd979bdSMark Fasheh init_rwsem(&oi->ip_alloc_sem); 1138251b6eccSMark Fasheh mutex_init(&oi->ip_io_mutex); 1139ccd979bdSMark Fasheh 1140ccd979bdSMark Fasheh oi->ip_blkno = 0ULL; 1141ccd979bdSMark Fasheh oi->ip_clusters = 0; 1142ccd979bdSMark Fasheh 1143ccd979bdSMark Fasheh ocfs2_lock_res_init_once(&oi->ip_rw_lockres); 1144e63aecb6SMark Fasheh ocfs2_lock_res_init_once(&oi->ip_inode_lockres); 114550008630STiger Yang ocfs2_lock_res_init_once(&oi->ip_open_lockres); 1146ccd979bdSMark Fasheh 1147ccd979bdSMark Fasheh ocfs2_metadata_cache_init(&oi->vfs_inode); 1148ccd979bdSMark Fasheh 1149ccd979bdSMark Fasheh inode_init_once(&oi->vfs_inode); 1150ccd979bdSMark Fasheh } 1151ccd979bdSMark Fasheh 1152ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void) 1153ccd979bdSMark Fasheh { 1154ccd979bdSMark Fasheh ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", 1155ccd979bdSMark Fasheh sizeof(struct ocfs2_inode_info), 1156fffb60f9SPaul Jackson 0, 1157fffb60f9SPaul Jackson (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| 1158fffb60f9SPaul Jackson SLAB_MEM_SPREAD), 115920c2df83SPaul Mundt ocfs2_inode_init_once); 1160ccd979bdSMark Fasheh if (!ocfs2_inode_cachep) 1161ccd979bdSMark Fasheh return -ENOMEM; 1162ccd979bdSMark Fasheh 1163ccd979bdSMark Fasheh return 0; 1164ccd979bdSMark Fasheh } 1165ccd979bdSMark Fasheh 1166ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void) 1167ccd979bdSMark Fasheh { 1168ccd979bdSMark Fasheh if (ocfs2_inode_cachep) 1169ccd979bdSMark Fasheh kmem_cache_destroy(ocfs2_inode_cachep); 1170ccd979bdSMark Fasheh 1171ccd979bdSMark Fasheh ocfs2_inode_cachep = NULL; 1172ccd979bdSMark Fasheh } 1173ccd979bdSMark Fasheh 1174ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 1175ccd979bdSMark Fasheh struct buffer_head **bh, 1176ccd979bdSMark Fasheh int block, 1177ccd979bdSMark Fasheh int sect_size) 1178ccd979bdSMark Fasheh { 1179ccd979bdSMark Fasheh if (!sb_set_blocksize(sb, sect_size)) { 1180ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to set blocksize\n"); 1181ccd979bdSMark Fasheh return -EIO; 1182ccd979bdSMark Fasheh } 1183ccd979bdSMark Fasheh 1184ccd979bdSMark Fasheh *bh = sb_getblk(sb, block); 1185ccd979bdSMark Fasheh if (!*bh) { 1186ccd979bdSMark Fasheh mlog_errno(-EIO); 1187ccd979bdSMark Fasheh return -EIO; 1188ccd979bdSMark Fasheh } 1189ccd979bdSMark Fasheh lock_buffer(*bh); 1190ccd979bdSMark Fasheh if (!buffer_dirty(*bh)) 1191ccd979bdSMark Fasheh clear_buffer_uptodate(*bh); 1192ccd979bdSMark Fasheh unlock_buffer(*bh); 1193ccd979bdSMark Fasheh ll_rw_block(READ, 1, bh); 1194ccd979bdSMark Fasheh wait_on_buffer(*bh); 1195ccd979bdSMark Fasheh return 0; 1196ccd979bdSMark Fasheh } 1197ccd979bdSMark Fasheh 1198ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb) 1199ccd979bdSMark Fasheh { 1200ccd979bdSMark Fasheh int status = 0; 1201ccd979bdSMark Fasheh int unlock_super = 0; 1202ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1203ccd979bdSMark Fasheh 1204ccd979bdSMark Fasheh mlog_entry_void(); 1205ccd979bdSMark Fasheh 1206ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 1207ccd979bdSMark Fasheh goto leave; 1208ccd979bdSMark Fasheh 1209ccd979bdSMark Fasheh status = ocfs2_dlm_init(osb); 1210ccd979bdSMark Fasheh if (status < 0) { 1211ccd979bdSMark Fasheh mlog_errno(status); 1212ccd979bdSMark Fasheh goto leave; 1213ccd979bdSMark Fasheh } 1214ccd979bdSMark Fasheh 1215ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 1216ccd979bdSMark Fasheh if (status < 0) { 1217ccd979bdSMark Fasheh mlog_errno(status); 1218ccd979bdSMark Fasheh goto leave; 1219ccd979bdSMark Fasheh } 1220ccd979bdSMark Fasheh unlock_super = 1; 1221ccd979bdSMark Fasheh 1222ccd979bdSMark Fasheh /* This will load up the node map and add ourselves to it. */ 1223ccd979bdSMark Fasheh status = ocfs2_find_slot(osb); 1224ccd979bdSMark Fasheh if (status < 0) { 1225ccd979bdSMark Fasheh mlog_errno(status); 1226ccd979bdSMark Fasheh goto leave; 1227ccd979bdSMark Fasheh } 1228ccd979bdSMark Fasheh 1229ccd979bdSMark Fasheh /* load all node-local system inodes */ 1230ccd979bdSMark Fasheh status = ocfs2_init_local_system_inodes(osb); 1231ccd979bdSMark Fasheh if (status < 0) { 1232ccd979bdSMark Fasheh mlog_errno(status); 1233ccd979bdSMark Fasheh goto leave; 1234ccd979bdSMark Fasheh } 1235ccd979bdSMark Fasheh 1236ccd979bdSMark Fasheh status = ocfs2_check_volume(osb); 1237ccd979bdSMark Fasheh if (status < 0) { 1238ccd979bdSMark Fasheh mlog_errno(status); 1239ccd979bdSMark Fasheh goto leave; 1240ccd979bdSMark Fasheh } 1241ccd979bdSMark Fasheh 1242ccd979bdSMark Fasheh status = ocfs2_truncate_log_init(osb); 1243ccd979bdSMark Fasheh if (status < 0) { 1244ccd979bdSMark Fasheh mlog_errno(status); 1245ccd979bdSMark Fasheh goto leave; 1246ccd979bdSMark Fasheh } 1247ccd979bdSMark Fasheh 1248c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1249c271c5c2SSunil Mushran goto leave; 1250c271c5c2SSunil Mushran 1251ccd979bdSMark Fasheh leave: 1252ccd979bdSMark Fasheh if (unlock_super) 1253ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1254ccd979bdSMark Fasheh 1255ccd979bdSMark Fasheh mlog_exit(status); 1256ccd979bdSMark Fasheh return status; 1257ccd979bdSMark Fasheh } 1258ccd979bdSMark Fasheh 1259ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) 1260ccd979bdSMark Fasheh { 1261286eaa95SJoel Becker int tmp, hangup_needed = 0; 1262ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 1263c271c5c2SSunil Mushran char nodestr[8]; 1264ccd979bdSMark Fasheh 1265ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 1266ccd979bdSMark Fasheh 1267ccd979bdSMark Fasheh BUG_ON(!sb); 1268ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 1269ccd979bdSMark Fasheh BUG_ON(!osb); 1270ccd979bdSMark Fasheh 1271ccd979bdSMark Fasheh ocfs2_shutdown_local_alloc(osb); 1272ccd979bdSMark Fasheh 1273ccd979bdSMark Fasheh ocfs2_truncate_log_shutdown(osb); 1274ccd979bdSMark Fasheh 1275553abd04SJoel Becker /* This will disable recovery and flush any recovery work. */ 1276553abd04SJoel Becker ocfs2_recovery_exit(osb); 1277ccd979bdSMark Fasheh 1278ccd979bdSMark Fasheh ocfs2_journal_shutdown(osb); 1279ccd979bdSMark Fasheh 1280ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 1281ccd979bdSMark Fasheh 12824670c46dSJoel Becker /* No cluster connection means we've failed during mount, so skip 12834670c46dSJoel Becker * all the steps which depended on that to complete. */ 12844670c46dSJoel Becker if (osb->cconn) { 1285ccd979bdSMark Fasheh tmp = ocfs2_super_lock(osb, 1); 1286ccd979bdSMark Fasheh if (tmp < 0) { 1287ccd979bdSMark Fasheh mlog_errno(tmp); 1288ccd979bdSMark Fasheh return; 1289ccd979bdSMark Fasheh } 129019b613d4SMark Fasheh } 1291ccd979bdSMark Fasheh 1292ccd979bdSMark Fasheh if (osb->slot_num != OCFS2_INVALID_SLOT) 1293ccd979bdSMark Fasheh ocfs2_put_slot(osb); 1294ccd979bdSMark Fasheh 12954670c46dSJoel Becker if (osb->cconn) 1296ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1297ccd979bdSMark Fasheh 1298ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 1299ccd979bdSMark Fasheh 13006953b4c0SJoel Becker /* 13016953b4c0SJoel Becker * If we're dismounting due to mount error, mount.ocfs2 will clean 13026953b4c0SJoel Becker * up heartbeat. If we're a local mount, there is no heartbeat. 13036953b4c0SJoel Becker * If we failed before we got a uuid_str yet, we can't stop 13046953b4c0SJoel Becker * heartbeat. Otherwise, do it. 13056953b4c0SJoel Becker */ 13066953b4c0SJoel Becker if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) 1307286eaa95SJoel Becker hangup_needed = 1; 1308286eaa95SJoel Becker 1309286eaa95SJoel Becker if (osb->cconn) 1310286eaa95SJoel Becker ocfs2_dlm_shutdown(osb, hangup_needed); 1311286eaa95SJoel Becker 1312286eaa95SJoel Becker debugfs_remove(osb->osb_debug_root); 1313286eaa95SJoel Becker 1314286eaa95SJoel Becker if (hangup_needed) 13156953b4c0SJoel Becker ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); 1316ccd979bdSMark Fasheh 1317ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); 1318ccd979bdSMark Fasheh 1319c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1320c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "local"); 1321c271c5c2SSunil Mushran else 132219fdb624SJoel Becker snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); 1323c271c5c2SSunil Mushran 1324c271c5c2SSunil Mushran printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", 1325c271c5c2SSunil Mushran osb->dev_str, nodestr); 1326ccd979bdSMark Fasheh 1327ccd979bdSMark Fasheh ocfs2_delete_osb(osb); 1328ccd979bdSMark Fasheh kfree(osb); 1329ccd979bdSMark Fasheh sb->s_dev = 0; 1330ccd979bdSMark Fasheh sb->s_fs_info = NULL; 1331ccd979bdSMark Fasheh } 1332ccd979bdSMark Fasheh 1333ccd979bdSMark Fasheh static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, 1334ccd979bdSMark Fasheh unsigned uuid_bytes) 1335ccd979bdSMark Fasheh { 1336ccd979bdSMark Fasheh int i, ret; 1337ccd979bdSMark Fasheh char *ptr; 1338ccd979bdSMark Fasheh 1339ccd979bdSMark Fasheh BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); 1340ccd979bdSMark Fasheh 1341cd861280SRobert P. J. Day osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); 1342ccd979bdSMark Fasheh if (osb->uuid_str == NULL) 1343ccd979bdSMark Fasheh return -ENOMEM; 1344ccd979bdSMark Fasheh 1345ccd979bdSMark Fasheh for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { 1346ccd979bdSMark Fasheh /* print with null */ 1347ccd979bdSMark Fasheh ret = snprintf(ptr, 3, "%02X", uuid[i]); 1348ccd979bdSMark Fasheh if (ret != 2) /* drop super cleans up */ 1349ccd979bdSMark Fasheh return -EINVAL; 1350ccd979bdSMark Fasheh /* then only advance past the last char */ 1351ccd979bdSMark Fasheh ptr += 2; 1352ccd979bdSMark Fasheh } 1353ccd979bdSMark Fasheh 1354ccd979bdSMark Fasheh return 0; 1355ccd979bdSMark Fasheh } 1356ccd979bdSMark Fasheh 1357ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 1358ccd979bdSMark Fasheh struct buffer_head *bh, 1359ccd979bdSMark Fasheh int sector_size) 1360ccd979bdSMark Fasheh { 1361bddb8eb3SDenis Cheng int status; 13625a254031SMark Fasheh int i, cbits, bbits; 13635a254031SMark Fasheh struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; 1364ccd979bdSMark Fasheh struct inode *inode = NULL; 1365ccd979bdSMark Fasheh struct ocfs2_journal *journal; 1366ccd979bdSMark Fasheh __le32 uuid_net_key; 1367ccd979bdSMark Fasheh struct ocfs2_super *osb; 1368ccd979bdSMark Fasheh 1369ccd979bdSMark Fasheh mlog_entry_void(); 1370ccd979bdSMark Fasheh 1371cd861280SRobert P. J. Day osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); 1372ccd979bdSMark Fasheh if (!osb) { 1373ccd979bdSMark Fasheh status = -ENOMEM; 1374ccd979bdSMark Fasheh mlog_errno(status); 1375ccd979bdSMark Fasheh goto bail; 1376ccd979bdSMark Fasheh } 1377ccd979bdSMark Fasheh 1378ccd979bdSMark Fasheh sb->s_fs_info = osb; 1379ccd979bdSMark Fasheh sb->s_op = &ocfs2_sops; 1380ccd979bdSMark Fasheh sb->s_export_op = &ocfs2_export_ops; 1381e0dceaf0SMark Fasheh sb->s_time_gran = 1; 1382ccd979bdSMark Fasheh sb->s_flags |= MS_NOATIME; 1383ccd979bdSMark Fasheh /* this is needed to support O_LARGEFILE */ 13845a254031SMark Fasheh cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); 13855a254031SMark Fasheh bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); 13865a254031SMark Fasheh sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); 1387ccd979bdSMark Fasheh 1388ccd979bdSMark Fasheh osb->sb = sb; 1389ccd979bdSMark Fasheh /* Save off for ocfs2_rw_direct */ 1390ccd979bdSMark Fasheh osb->s_sectsize_bits = blksize_bits(sector_size); 1391ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb->s_sectsize_bits); 1392ccd979bdSMark Fasheh 139334d024f8SMark Fasheh spin_lock_init(&osb->dc_task_lock); 139434d024f8SMark Fasheh init_waitqueue_head(&osb->dc_event); 139534d024f8SMark Fasheh osb->dc_work_sequence = 0; 139634d024f8SMark Fasheh osb->dc_wake_sequence = 0; 1397ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->blocked_lock_list); 1398ccd979bdSMark Fasheh osb->blocked_lock_count = 0; 1399ccd979bdSMark Fasheh spin_lock_init(&osb->osb_lock); 14004d0ddb2cSTao Ma ocfs2_init_inode_steal_slot(osb); 1401ccd979bdSMark Fasheh 1402ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.moves, 0); 1403ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.local_data, 0); 1404ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bitmap_data, 0); 1405ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_allocs, 0); 1406ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_extends, 0); 1407ccd979bdSMark Fasheh 1408ccd979bdSMark Fasheh ocfs2_init_node_maps(osb); 1409ccd979bdSMark Fasheh 1410ccd979bdSMark Fasheh snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", 1411ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1412ccd979bdSMark Fasheh 1413553abd04SJoel Becker status = ocfs2_recovery_init(osb); 1414553abd04SJoel Becker if (status) { 1415553abd04SJoel Becker mlog(ML_ERROR, "Unable to initialize recovery state\n"); 1416553abd04SJoel Becker mlog_errno(status); 1417553abd04SJoel Becker goto bail; 1418553abd04SJoel Becker } 1419ccd979bdSMark Fasheh 1420ccd979bdSMark Fasheh init_waitqueue_head(&osb->checkpoint_event); 1421ccd979bdSMark Fasheh atomic_set(&osb->needs_checkpoint, 0); 1422ccd979bdSMark Fasheh 14237f1a37e3STiger Yang osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; 14247f1a37e3STiger Yang 1425ccd979bdSMark Fasheh osb->slot_num = OCFS2_INVALID_SLOT; 1426ccd979bdSMark Fasheh 1427ccd979bdSMark Fasheh osb->local_alloc_state = OCFS2_LA_UNUSED; 1428ccd979bdSMark Fasheh osb->local_alloc_bh = NULL; 14299c7af40bSMark Fasheh INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); 1430ccd979bdSMark Fasheh 1431ccd979bdSMark Fasheh init_waitqueue_head(&osb->osb_mount_event); 1432ccd979bdSMark Fasheh 1433ccd979bdSMark Fasheh osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); 1434ccd979bdSMark Fasheh if (!osb->vol_label) { 1435ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc vol label\n"); 1436ccd979bdSMark Fasheh status = -ENOMEM; 1437ccd979bdSMark Fasheh goto bail; 1438ccd979bdSMark Fasheh } 1439ccd979bdSMark Fasheh 1440ccd979bdSMark Fasheh osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); 1441ccd979bdSMark Fasheh if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { 1442ccd979bdSMark Fasheh mlog(ML_ERROR, "Invalid number of node slots (%u)\n", 1443ccd979bdSMark Fasheh osb->max_slots); 1444ccd979bdSMark Fasheh status = -EINVAL; 1445ccd979bdSMark Fasheh goto bail; 1446ccd979bdSMark Fasheh } 1447781ee3e2SSunil Mushran mlog(0, "max_slots for this device: %u\n", osb->max_slots); 1448ccd979bdSMark Fasheh 1449539d8264SSunil Mushran osb->slot_recovery_generations = 1450539d8264SSunil Mushran kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), 1451539d8264SSunil Mushran GFP_KERNEL); 1452539d8264SSunil Mushran if (!osb->slot_recovery_generations) { 1453539d8264SSunil Mushran status = -ENOMEM; 1454539d8264SSunil Mushran mlog_errno(status); 1455539d8264SSunil Mushran goto bail; 1456539d8264SSunil Mushran } 1457539d8264SSunil Mushran 1458b4df6ed8SMark Fasheh init_waitqueue_head(&osb->osb_wipe_event); 1459b4df6ed8SMark Fasheh osb->osb_orphan_wipes = kcalloc(osb->max_slots, 1460b4df6ed8SMark Fasheh sizeof(*osb->osb_orphan_wipes), 1461b4df6ed8SMark Fasheh GFP_KERNEL); 1462b4df6ed8SMark Fasheh if (!osb->osb_orphan_wipes) { 1463b4df6ed8SMark Fasheh status = -ENOMEM; 1464b4df6ed8SMark Fasheh mlog_errno(status); 1465b4df6ed8SMark Fasheh goto bail; 1466b4df6ed8SMark Fasheh } 1467b4df6ed8SMark Fasheh 1468ccd979bdSMark Fasheh osb->s_feature_compat = 1469ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); 1470ccd979bdSMark Fasheh osb->s_feature_ro_compat = 1471ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); 1472ccd979bdSMark Fasheh osb->s_feature_incompat = 1473ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); 1474ccd979bdSMark Fasheh 1475ccd979bdSMark Fasheh if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { 1476ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount because of unsupported " 1477ccd979bdSMark Fasheh "optional features (%x).\n", i); 1478ccd979bdSMark Fasheh status = -EINVAL; 1479ccd979bdSMark Fasheh goto bail; 1480ccd979bdSMark Fasheh } 1481ccd979bdSMark Fasheh if (!(osb->sb->s_flags & MS_RDONLY) && 1482ccd979bdSMark Fasheh (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { 1483ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount RDWR because of " 1484ccd979bdSMark Fasheh "unsupported optional features (%x).\n", i); 1485ccd979bdSMark Fasheh status = -EINVAL; 1486ccd979bdSMark Fasheh goto bail; 1487ccd979bdSMark Fasheh } 1488ccd979bdSMark Fasheh 1489b61817e1SJoel Becker if (ocfs2_userspace_stack(osb)) { 1490b61817e1SJoel Becker memcpy(osb->osb_cluster_stack, 1491b61817e1SJoel Becker OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, 1492b61817e1SJoel Becker OCFS2_STACK_LABEL_LEN); 1493b61817e1SJoel Becker osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; 1494b61817e1SJoel Becker if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { 1495b61817e1SJoel Becker mlog(ML_ERROR, 1496b61817e1SJoel Becker "couldn't mount because of an invalid " 1497b61817e1SJoel Becker "cluster stack label (%s) \n", 1498b61817e1SJoel Becker osb->osb_cluster_stack); 1499b61817e1SJoel Becker status = -EINVAL; 1500b61817e1SJoel Becker goto bail; 1501b61817e1SJoel Becker } 1502b61817e1SJoel Becker } else { 1503b61817e1SJoel Becker /* The empty string is identical with classic tools that 1504b61817e1SJoel Becker * don't know about s_cluster_info. */ 1505b61817e1SJoel Becker osb->osb_cluster_stack[0] = '\0'; 1506b61817e1SJoel Becker } 1507b61817e1SJoel Becker 1508ccd979bdSMark Fasheh get_random_bytes(&osb->s_next_generation, sizeof(u32)); 1509ccd979bdSMark Fasheh 1510ccd979bdSMark Fasheh /* FIXME 1511ccd979bdSMark Fasheh * This should be done in ocfs2_journal_init(), but unknown 1512ccd979bdSMark Fasheh * ordering issues will cause the filesystem to crash. 1513ccd979bdSMark Fasheh * If anyone wants to figure out what part of the code 1514ccd979bdSMark Fasheh * refers to osb->journal before ocfs2_journal_init() is run, 1515ccd979bdSMark Fasheh * be my guest. 1516ccd979bdSMark Fasheh */ 1517ccd979bdSMark Fasheh /* initialize our journal structure */ 1518ccd979bdSMark Fasheh 1519cd861280SRobert P. J. Day journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); 1520ccd979bdSMark Fasheh if (!journal) { 1521ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc journal\n"); 1522ccd979bdSMark Fasheh status = -ENOMEM; 1523ccd979bdSMark Fasheh goto bail; 1524ccd979bdSMark Fasheh } 1525ccd979bdSMark Fasheh osb->journal = journal; 1526ccd979bdSMark Fasheh journal->j_osb = osb; 1527ccd979bdSMark Fasheh 1528ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 1529ccd979bdSMark Fasheh init_rwsem(&journal->j_trans_barrier); 1530ccd979bdSMark Fasheh init_waitqueue_head(&journal->j_checkpointed); 1531ccd979bdSMark Fasheh spin_lock_init(&journal->j_lock); 1532ccd979bdSMark Fasheh journal->j_trans_id = (unsigned long) 1; 1533ccd979bdSMark Fasheh INIT_LIST_HEAD(&journal->j_la_cleanups); 1534c4028958SDavid Howells INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); 1535ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 1536ccd979bdSMark Fasheh 1537ccd979bdSMark Fasheh /* get some pseudo constants for clustersize bits */ 1538ccd979bdSMark Fasheh osb->s_clustersize_bits = 1539ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits); 1540ccd979bdSMark Fasheh osb->s_clustersize = 1 << osb->s_clustersize_bits; 1541ccd979bdSMark Fasheh mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); 1542ccd979bdSMark Fasheh 1543ccd979bdSMark Fasheh if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || 1544ccd979bdSMark Fasheh osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { 1545ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", 1546ccd979bdSMark Fasheh osb->s_clustersize); 1547ccd979bdSMark Fasheh status = -EINVAL; 1548ccd979bdSMark Fasheh goto bail; 1549ccd979bdSMark Fasheh } 1550ccd979bdSMark Fasheh 1551ccd979bdSMark Fasheh if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) 1552ccd979bdSMark Fasheh > (u32)~0UL) { 1553ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume might try to write to blocks beyond " 1554ccd979bdSMark Fasheh "what jbd can address in 32 bits.\n"); 1555ccd979bdSMark Fasheh status = -EINVAL; 1556ccd979bdSMark Fasheh goto bail; 1557ccd979bdSMark Fasheh } 1558ccd979bdSMark Fasheh 1559ccd979bdSMark Fasheh if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, 1560ccd979bdSMark Fasheh sizeof(di->id2.i_super.s_uuid))) { 1561ccd979bdSMark Fasheh mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); 1562ccd979bdSMark Fasheh status = -ENOMEM; 1563ccd979bdSMark Fasheh goto bail; 1564ccd979bdSMark Fasheh } 1565ccd979bdSMark Fasheh 156678427043SMark Fasheh memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); 1567ccd979bdSMark Fasheh 1568ccd979bdSMark Fasheh strncpy(osb->vol_label, di->id2.i_super.s_label, 63); 1569ccd979bdSMark Fasheh osb->vol_label[63] = '\0'; 1570ccd979bdSMark Fasheh osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); 1571ccd979bdSMark Fasheh osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); 1572ccd979bdSMark Fasheh osb->first_cluster_group_blkno = 1573ccd979bdSMark Fasheh le64_to_cpu(di->id2.i_super.s_first_cluster_group); 1574ccd979bdSMark Fasheh osb->fs_generation = le32_to_cpu(di->i_fs_generation); 1575ccd979bdSMark Fasheh mlog(0, "vol_label: %s\n", osb->vol_label); 1576ccd979bdSMark Fasheh mlog(0, "uuid: %s\n", osb->uuid_str); 1577b0697053SMark Fasheh mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", 1578b0697053SMark Fasheh (unsigned long long)osb->root_blkno, 1579b0697053SMark Fasheh (unsigned long long)osb->system_dir_blkno); 1580ccd979bdSMark Fasheh 1581ccd979bdSMark Fasheh osb->osb_dlm_debug = ocfs2_new_dlm_debug(); 1582ccd979bdSMark Fasheh if (!osb->osb_dlm_debug) { 1583ccd979bdSMark Fasheh status = -ENOMEM; 1584ccd979bdSMark Fasheh mlog_errno(status); 1585ccd979bdSMark Fasheh goto bail; 1586ccd979bdSMark Fasheh } 1587ccd979bdSMark Fasheh 1588ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_INIT); 1589ccd979bdSMark Fasheh 1590ccd979bdSMark Fasheh /* load root, system_dir, and all global system inodes */ 1591ccd979bdSMark Fasheh status = ocfs2_init_global_system_inodes(osb); 1592ccd979bdSMark Fasheh if (status < 0) { 1593ccd979bdSMark Fasheh mlog_errno(status); 1594ccd979bdSMark Fasheh goto bail; 1595ccd979bdSMark Fasheh } 1596ccd979bdSMark Fasheh 1597ccd979bdSMark Fasheh /* 1598ccd979bdSMark Fasheh * global bitmap 1599ccd979bdSMark Fasheh */ 1600ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, 1601ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1602ccd979bdSMark Fasheh if (!inode) { 1603ccd979bdSMark Fasheh status = -EINVAL; 1604ccd979bdSMark Fasheh mlog_errno(status); 1605ccd979bdSMark Fasheh goto bail; 1606ccd979bdSMark Fasheh } 1607ccd979bdSMark Fasheh 1608ccd979bdSMark Fasheh osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; 1609ccd979bdSMark Fasheh iput(inode); 1610ccd979bdSMark Fasheh 1611e9d578a8STao Ma osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; 1612ccd979bdSMark Fasheh 1613ccd979bdSMark Fasheh status = ocfs2_init_slot_info(osb); 1614ccd979bdSMark Fasheh if (status < 0) { 1615ccd979bdSMark Fasheh mlog_errno(status); 1616ccd979bdSMark Fasheh goto bail; 1617ccd979bdSMark Fasheh } 1618ccd979bdSMark Fasheh 1619ccd979bdSMark Fasheh bail: 1620ccd979bdSMark Fasheh mlog_exit(status); 1621ccd979bdSMark Fasheh return status; 1622ccd979bdSMark Fasheh } 1623ccd979bdSMark Fasheh 1624ccd979bdSMark Fasheh /* 1625ccd979bdSMark Fasheh * will return: -EAGAIN if it is ok to keep searching for superblocks 1626ccd979bdSMark Fasheh * -EINVAL if there is a bad superblock 1627ccd979bdSMark Fasheh * 0 on success 1628ccd979bdSMark Fasheh */ 1629ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 1630ccd979bdSMark Fasheh struct buffer_head *bh, 1631ccd979bdSMark Fasheh u32 blksz) 1632ccd979bdSMark Fasheh { 1633ccd979bdSMark Fasheh int status = -EAGAIN; 1634ccd979bdSMark Fasheh 1635ccd979bdSMark Fasheh mlog_entry_void(); 1636ccd979bdSMark Fasheh 1637ccd979bdSMark Fasheh if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, 1638ccd979bdSMark Fasheh strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { 1639ccd979bdSMark Fasheh status = -EINVAL; 1640ccd979bdSMark Fasheh if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { 1641ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with incorrect block " 1642ccd979bdSMark Fasheh "size: found %u, should be %u\n", 1643ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), 1644ccd979bdSMark Fasheh blksz); 1645ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != 1646ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL || 1647ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level) != 1648ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL) { 1649ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with bad version: " 1650ccd979bdSMark Fasheh "found %u.%u, should be %u.%u\n", 1651ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_major_rev_level), 1652ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level), 1653ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL, 1654ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL); 1655ccd979bdSMark Fasheh } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { 1656ccd979bdSMark Fasheh mlog(ML_ERROR, "bad block number on superblock: " 1657b0697053SMark Fasheh "found %llu, should be %llu\n", 16581ca1a111SMark Fasheh (unsigned long long)le64_to_cpu(di->i_blkno), 1659b0697053SMark Fasheh (unsigned long long)bh->b_blocknr); 1660ccd979bdSMark Fasheh } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || 1661ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { 1662ccd979bdSMark Fasheh mlog(ML_ERROR, "bad cluster size found: %u\n", 1663ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); 1664ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { 1665ccd979bdSMark Fasheh mlog(ML_ERROR, "bad root_blkno: 0\n"); 1666ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { 1667ccd979bdSMark Fasheh mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); 1668ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { 1669ccd979bdSMark Fasheh mlog(ML_ERROR, 1670ccd979bdSMark Fasheh "Superblock slots found greater than file system " 1671ccd979bdSMark Fasheh "maximum: found %u, max %u\n", 1672ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_max_slots), 1673ccd979bdSMark Fasheh OCFS2_MAX_SLOTS); 1674ccd979bdSMark Fasheh } else { 1675ccd979bdSMark Fasheh /* found it! */ 1676ccd979bdSMark Fasheh status = 0; 1677ccd979bdSMark Fasheh } 1678ccd979bdSMark Fasheh } 1679ccd979bdSMark Fasheh 1680ccd979bdSMark Fasheh mlog_exit(status); 1681ccd979bdSMark Fasheh return status; 1682ccd979bdSMark Fasheh } 1683ccd979bdSMark Fasheh 1684ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb) 1685ccd979bdSMark Fasheh { 1686bddb8eb3SDenis Cheng int status; 1687ccd979bdSMark Fasheh int dirty; 1688c271c5c2SSunil Mushran int local; 1689ccd979bdSMark Fasheh struct ocfs2_dinode *local_alloc = NULL; /* only used if we 1690ccd979bdSMark Fasheh * recover 1691ccd979bdSMark Fasheh * ourselves. */ 1692ccd979bdSMark Fasheh 1693ccd979bdSMark Fasheh mlog_entry_void(); 1694ccd979bdSMark Fasheh 1695ccd979bdSMark Fasheh /* Init our journal object. */ 1696ccd979bdSMark Fasheh status = ocfs2_journal_init(osb->journal, &dirty); 1697ccd979bdSMark Fasheh if (status < 0) { 1698ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not initialize journal!\n"); 1699ccd979bdSMark Fasheh goto finally; 1700ccd979bdSMark Fasheh } 1701ccd979bdSMark Fasheh 1702ccd979bdSMark Fasheh /* If the journal was unmounted cleanly then we don't want to 1703ccd979bdSMark Fasheh * recover anything. Otherwise, journal_load will do that 1704ccd979bdSMark Fasheh * dirty work for us :) */ 1705ccd979bdSMark Fasheh if (!dirty) { 1706ccd979bdSMark Fasheh status = ocfs2_journal_wipe(osb->journal, 0); 1707ccd979bdSMark Fasheh if (status < 0) { 1708ccd979bdSMark Fasheh mlog_errno(status); 1709ccd979bdSMark Fasheh goto finally; 1710ccd979bdSMark Fasheh } 1711ccd979bdSMark Fasheh } else { 1712ccd979bdSMark Fasheh mlog(ML_NOTICE, "File system was not unmounted cleanly, " 1713ccd979bdSMark Fasheh "recovering volume.\n"); 1714ccd979bdSMark Fasheh } 1715ccd979bdSMark Fasheh 1716c271c5c2SSunil Mushran local = ocfs2_mount_local(osb); 1717c271c5c2SSunil Mushran 1718ccd979bdSMark Fasheh /* will play back anything left in the journal. */ 1719539d8264SSunil Mushran status = ocfs2_journal_load(osb->journal, local, dirty); 172001af4820SWengang Wang if (status < 0) { 172101af4820SWengang Wang mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); 172201af4820SWengang Wang goto finally; 172301af4820SWengang Wang } 1724ccd979bdSMark Fasheh 1725ccd979bdSMark Fasheh if (dirty) { 1726ccd979bdSMark Fasheh /* recover my local alloc if we didn't unmount cleanly. */ 1727ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, 1728ccd979bdSMark Fasheh osb->slot_num, 1729ccd979bdSMark Fasheh &local_alloc); 1730ccd979bdSMark Fasheh if (status < 0) { 1731ccd979bdSMark Fasheh mlog_errno(status); 1732ccd979bdSMark Fasheh goto finally; 1733ccd979bdSMark Fasheh } 1734ccd979bdSMark Fasheh /* we complete the recovery process after we've marked 1735ccd979bdSMark Fasheh * ourselves as mounted. */ 1736ccd979bdSMark Fasheh } 1737ccd979bdSMark Fasheh 1738ccd979bdSMark Fasheh mlog(0, "Journal loaded.\n"); 1739ccd979bdSMark Fasheh 1740ccd979bdSMark Fasheh status = ocfs2_load_local_alloc(osb); 1741ccd979bdSMark Fasheh if (status < 0) { 1742ccd979bdSMark Fasheh mlog_errno(status); 1743ccd979bdSMark Fasheh goto finally; 1744ccd979bdSMark Fasheh } 1745ccd979bdSMark Fasheh 1746ccd979bdSMark Fasheh if (dirty) { 1747ccd979bdSMark Fasheh /* Recovery will be completed after we've mounted the 1748ccd979bdSMark Fasheh * rest of the volume. */ 1749ccd979bdSMark Fasheh osb->dirty = 1; 1750ccd979bdSMark Fasheh osb->local_alloc_copy = local_alloc; 1751ccd979bdSMark Fasheh local_alloc = NULL; 1752ccd979bdSMark Fasheh } 1753ccd979bdSMark Fasheh 1754ccd979bdSMark Fasheh /* go through each journal, trylock it and if you get the 1755ccd979bdSMark Fasheh * lock, and it's marked as dirty, set the bit in the recover 1756ccd979bdSMark Fasheh * map and launch a recovery thread for it. */ 1757ccd979bdSMark Fasheh status = ocfs2_mark_dead_nodes(osb); 1758ccd979bdSMark Fasheh if (status < 0) 1759ccd979bdSMark Fasheh mlog_errno(status); 1760ccd979bdSMark Fasheh 1761ccd979bdSMark Fasheh finally: 1762ccd979bdSMark Fasheh if (local_alloc) 1763ccd979bdSMark Fasheh kfree(local_alloc); 1764ccd979bdSMark Fasheh 1765ccd979bdSMark Fasheh mlog_exit(status); 1766ccd979bdSMark Fasheh return status; 1767ccd979bdSMark Fasheh } 1768ccd979bdSMark Fasheh 1769ccd979bdSMark Fasheh /* 1770ccd979bdSMark Fasheh * The routine gets called from dismount or close whenever a dismount on 1771ccd979bdSMark Fasheh * volume is requested and the osb open count becomes 1. 1772ccd979bdSMark Fasheh * It will remove the osb from the global list and also free up all the 1773ccd979bdSMark Fasheh * initialized resources and fileobject. 1774ccd979bdSMark Fasheh */ 1775ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb) 1776ccd979bdSMark Fasheh { 1777ccd979bdSMark Fasheh mlog_entry_void(); 1778ccd979bdSMark Fasheh 1779ccd979bdSMark Fasheh /* This function assumes that the caller has the main osb resource */ 1780ccd979bdSMark Fasheh 17818e8a4603SMark Fasheh ocfs2_free_slot_info(osb); 1782ccd979bdSMark Fasheh 1783b4df6ed8SMark Fasheh kfree(osb->osb_orphan_wipes); 1784539d8264SSunil Mushran kfree(osb->slot_recovery_generations); 1785ccd979bdSMark Fasheh /* FIXME 1786ccd979bdSMark Fasheh * This belongs in journal shutdown, but because we have to 1787ccd979bdSMark Fasheh * allocate osb->journal at the start of ocfs2_initalize_osb(), 1788ccd979bdSMark Fasheh * we free it here. 1789ccd979bdSMark Fasheh */ 1790ccd979bdSMark Fasheh kfree(osb->journal); 1791ccd979bdSMark Fasheh if (osb->local_alloc_copy) 1792ccd979bdSMark Fasheh kfree(osb->local_alloc_copy); 1793ccd979bdSMark Fasheh kfree(osb->uuid_str); 1794ccd979bdSMark Fasheh ocfs2_put_dlm_debug(osb->osb_dlm_debug); 1795ccd979bdSMark Fasheh memset(osb, 0, sizeof(struct ocfs2_super)); 1796ccd979bdSMark Fasheh 1797ccd979bdSMark Fasheh mlog_exit_void(); 1798ccd979bdSMark Fasheh } 1799ccd979bdSMark Fasheh 1800ccd979bdSMark Fasheh /* Put OCFS2 into a readonly state, or (if the user specifies it), 1801ccd979bdSMark Fasheh * panic(). We do not support continue-on-error operation. */ 1802ccd979bdSMark Fasheh static void ocfs2_handle_error(struct super_block *sb) 1803ccd979bdSMark Fasheh { 1804ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1805ccd979bdSMark Fasheh 1806ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) 1807ccd979bdSMark Fasheh panic("OCFS2: (device %s): panic forced after error\n", 1808ccd979bdSMark Fasheh sb->s_id); 1809ccd979bdSMark Fasheh 1810ccd979bdSMark Fasheh ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); 1811ccd979bdSMark Fasheh 1812ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY && 1813ccd979bdSMark Fasheh (ocfs2_is_soft_readonly(osb) || 1814ccd979bdSMark Fasheh ocfs2_is_hard_readonly(osb))) 1815ccd979bdSMark Fasheh return; 1816ccd979bdSMark Fasheh 1817ccd979bdSMark Fasheh printk(KERN_CRIT "File system is now read-only due to the potential " 1818ccd979bdSMark Fasheh "of on-disk corruption. Please run fsck.ocfs2 once the file " 1819ccd979bdSMark Fasheh "system is unmounted.\n"); 1820ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 1821ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 1822ccd979bdSMark Fasheh } 1823ccd979bdSMark Fasheh 1824ccd979bdSMark Fasheh static char error_buf[1024]; 1825ccd979bdSMark Fasheh 1826ccd979bdSMark Fasheh void __ocfs2_error(struct super_block *sb, 1827ccd979bdSMark Fasheh const char *function, 1828ccd979bdSMark Fasheh const char *fmt, ...) 1829ccd979bdSMark Fasheh { 1830ccd979bdSMark Fasheh va_list args; 1831ccd979bdSMark Fasheh 1832ccd979bdSMark Fasheh va_start(args, fmt); 18334a6e617aSAlexey Dobriyan vsnprintf(error_buf, sizeof(error_buf), fmt, args); 1834ccd979bdSMark Fasheh va_end(args); 1835ccd979bdSMark Fasheh 1836ccd979bdSMark Fasheh /* Not using mlog here because we want to show the actual 1837ccd979bdSMark Fasheh * function the error came from. */ 1838ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", 1839ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1840ccd979bdSMark Fasheh 1841ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1842ccd979bdSMark Fasheh } 1843ccd979bdSMark Fasheh 1844ccd979bdSMark Fasheh /* Handle critical errors. This is intentionally more drastic than 1845ccd979bdSMark Fasheh * ocfs2_handle_error, so we only use for things like journal errors, 1846ccd979bdSMark Fasheh * etc. */ 1847ccd979bdSMark Fasheh void __ocfs2_abort(struct super_block* sb, 1848ccd979bdSMark Fasheh const char *function, 1849ccd979bdSMark Fasheh const char *fmt, ...) 1850ccd979bdSMark Fasheh { 1851ccd979bdSMark Fasheh va_list args; 1852ccd979bdSMark Fasheh 1853ccd979bdSMark Fasheh va_start(args, fmt); 18544a6e617aSAlexey Dobriyan vsnprintf(error_buf, sizeof(error_buf), fmt, args); 1855ccd979bdSMark Fasheh va_end(args); 1856ccd979bdSMark Fasheh 1857ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", 1858ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1859ccd979bdSMark Fasheh 1860ccd979bdSMark Fasheh /* We don't have the cluster support yet to go straight to 1861ccd979bdSMark Fasheh * hard readonly in here. Until then, we want to keep 1862ccd979bdSMark Fasheh * ocfs2_abort() so that we can at least mark critical 1863ccd979bdSMark Fasheh * errors. 1864ccd979bdSMark Fasheh * 1865ccd979bdSMark Fasheh * TODO: This should abort the journal and alert other nodes 1866ccd979bdSMark Fasheh * that our slot needs recovery. */ 1867ccd979bdSMark Fasheh 1868ccd979bdSMark Fasheh /* Force a panic(). This stinks, but it's better than letting 1869ccd979bdSMark Fasheh * things continue without having a proper hard readonly 1870ccd979bdSMark Fasheh * here. */ 1871ccd979bdSMark Fasheh OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 1872ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1873ccd979bdSMark Fasheh } 1874ccd979bdSMark Fasheh 1875ccd979bdSMark Fasheh module_init(ocfs2_init); 1876ccd979bdSMark Fasheh module_exit(ocfs2_exit); 1877