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> 43ccd979bdSMark Fasheh 44ccd979bdSMark Fasheh #include <cluster/nodemanager.h> 45ccd979bdSMark Fasheh 46ccd979bdSMark Fasheh #define MLOG_MASK_PREFIX ML_SUPER 47ccd979bdSMark Fasheh #include <cluster/masklog.h> 48ccd979bdSMark Fasheh 49ccd979bdSMark Fasheh #include "ocfs2.h" 50ccd979bdSMark Fasheh 51ccd979bdSMark Fasheh /* this should be the only file to include a version 1 header */ 52ccd979bdSMark Fasheh #include "ocfs1_fs_compat.h" 53ccd979bdSMark Fasheh 54ccd979bdSMark Fasheh #include "alloc.h" 55ccd979bdSMark Fasheh #include "dlmglue.h" 56ccd979bdSMark Fasheh #include "export.h" 57ccd979bdSMark Fasheh #include "extent_map.h" 58ccd979bdSMark Fasheh #include "heartbeat.h" 59ccd979bdSMark Fasheh #include "inode.h" 60ccd979bdSMark Fasheh #include "journal.h" 61ccd979bdSMark Fasheh #include "localalloc.h" 62ccd979bdSMark Fasheh #include "namei.h" 63ccd979bdSMark Fasheh #include "slot_map.h" 64ccd979bdSMark Fasheh #include "super.h" 65ccd979bdSMark Fasheh #include "sysfile.h" 66ccd979bdSMark Fasheh #include "uptodate.h" 67ccd979bdSMark Fasheh #include "ver.h" 68ccd979bdSMark Fasheh 69ccd979bdSMark Fasheh #include "buffer_head_io.h" 70ccd979bdSMark Fasheh 71e18b890bSChristoph Lameter static struct kmem_cache *ocfs2_inode_cachep = NULL; 72ccd979bdSMark Fasheh 73ccd979bdSMark Fasheh /* OCFS2 needs to schedule several differnt types of work which 74ccd979bdSMark Fasheh * require cluster locking, disk I/O, recovery waits, etc. Since these 75ccd979bdSMark Fasheh * types of work tend to be heavy we avoid using the kernel events 76ccd979bdSMark Fasheh * workqueue and schedule on our own. */ 77ccd979bdSMark Fasheh struct workqueue_struct *ocfs2_wq = NULL; 78ccd979bdSMark Fasheh 79ccd979bdSMark Fasheh static struct dentry *ocfs2_debugfs_root = NULL; 80ccd979bdSMark Fasheh 81ccd979bdSMark Fasheh MODULE_AUTHOR("Oracle"); 82ccd979bdSMark Fasheh MODULE_LICENSE("GPL"); 83ccd979bdSMark Fasheh 84c0123adeSTiger Yang struct mount_options 85c0123adeSTiger Yang { 86d147b3d6SMark Fasheh unsigned long commit_interval; 87c0123adeSTiger Yang unsigned long mount_opt; 88c0123adeSTiger Yang unsigned int atime_quantum; 89c0123adeSTiger Yang signed short slot; 902fbe8d1eSSunil Mushran unsigned int localalloc_opt; 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_fill_local_node_info(struct ocfs2_super *osb); 113ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb); 114ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 115ccd979bdSMark Fasheh struct buffer_head *bh, 116ccd979bdSMark Fasheh u32 sectsize); 117ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 118ccd979bdSMark Fasheh struct buffer_head *bh, 119ccd979bdSMark Fasheh int sector_size); 120ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 121ccd979bdSMark Fasheh struct buffer_head **bh, 122ccd979bdSMark Fasheh int block, 123ccd979bdSMark Fasheh int sect_size); 124ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb); 125ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb); 126ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode); 127ccd979bdSMark Fasheh 128ee9b6d61SJosef 'Jeff' Sipek static const struct super_operations ocfs2_sops = { 129ccd979bdSMark Fasheh .statfs = ocfs2_statfs, 130ccd979bdSMark Fasheh .alloc_inode = ocfs2_alloc_inode, 131ccd979bdSMark Fasheh .destroy_inode = ocfs2_destroy_inode, 132ccd979bdSMark Fasheh .drop_inode = ocfs2_drop_inode, 133ccd979bdSMark Fasheh .clear_inode = ocfs2_clear_inode, 134ccd979bdSMark Fasheh .delete_inode = ocfs2_delete_inode, 135ccd979bdSMark Fasheh .sync_fs = ocfs2_sync_fs, 136ccd979bdSMark Fasheh .write_super = ocfs2_write_super, 137ccd979bdSMark Fasheh .put_super = ocfs2_put_super, 138ccd979bdSMark Fasheh .remount_fs = ocfs2_remount, 139d550071cSSunil Mushran .show_options = ocfs2_show_options, 140ccd979bdSMark Fasheh }; 141ccd979bdSMark Fasheh 142ccd979bdSMark Fasheh enum { 143ccd979bdSMark Fasheh Opt_barrier, 144ccd979bdSMark Fasheh Opt_err_panic, 145ccd979bdSMark Fasheh Opt_err_ro, 146ccd979bdSMark Fasheh Opt_intr, 147ccd979bdSMark Fasheh Opt_nointr, 148ccd979bdSMark Fasheh Opt_hb_none, 149ccd979bdSMark Fasheh Opt_hb_local, 150ccd979bdSMark Fasheh Opt_data_ordered, 151ccd979bdSMark Fasheh Opt_data_writeback, 1527f1a37e3STiger Yang Opt_atime_quantum, 153baf4661aSSunil Mushran Opt_slot, 154d147b3d6SMark Fasheh Opt_commit, 1552fbe8d1eSSunil Mushran Opt_localalloc, 15653fc622bSMark Fasheh Opt_localflocks, 157ccd979bdSMark Fasheh Opt_err, 158ccd979bdSMark Fasheh }; 159ccd979bdSMark Fasheh 160ccd979bdSMark Fasheh static 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"}, 175ccd979bdSMark Fasheh {Opt_err, NULL} 176ccd979bdSMark Fasheh }; 177ccd979bdSMark Fasheh 178ccd979bdSMark Fasheh /* 179ccd979bdSMark Fasheh * write_super and sync_fs ripped right out of ext3. 180ccd979bdSMark Fasheh */ 181ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb) 182ccd979bdSMark Fasheh { 1837892f2f4SIngo Molnar if (mutex_trylock(&sb->s_lock) != 0) 184ccd979bdSMark Fasheh BUG(); 185ccd979bdSMark Fasheh sb->s_dirt = 0; 186ccd979bdSMark Fasheh } 187ccd979bdSMark Fasheh 188ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait) 189ccd979bdSMark Fasheh { 190bddb8eb3SDenis Cheng int status; 191ccd979bdSMark Fasheh tid_t target; 192ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 193ccd979bdSMark Fasheh 194ccd979bdSMark Fasheh sb->s_dirt = 0; 195ccd979bdSMark Fasheh 196ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 197ccd979bdSMark Fasheh return -EROFS; 198ccd979bdSMark Fasheh 199ccd979bdSMark Fasheh if (wait) { 200ccd979bdSMark Fasheh status = ocfs2_flush_truncate_log(osb); 201ccd979bdSMark Fasheh if (status < 0) 202ccd979bdSMark Fasheh mlog_errno(status); 203ccd979bdSMark Fasheh } else { 204ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 205ccd979bdSMark Fasheh } 206ccd979bdSMark Fasheh 207ccd979bdSMark Fasheh if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { 208ccd979bdSMark Fasheh if (wait) 209ccd979bdSMark Fasheh log_wait_commit(OCFS2_SB(sb)->journal->j_journal, 210ccd979bdSMark Fasheh target); 211ccd979bdSMark Fasheh } 212ccd979bdSMark Fasheh return 0; 213ccd979bdSMark Fasheh } 214ccd979bdSMark Fasheh 215ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) 216ccd979bdSMark Fasheh { 217ccd979bdSMark Fasheh struct inode *new = NULL; 218ccd979bdSMark Fasheh int status = 0; 219ccd979bdSMark Fasheh int i; 220ccd979bdSMark Fasheh 221ccd979bdSMark Fasheh mlog_entry_void(); 222ccd979bdSMark Fasheh 2235fa0613eSJan Kara new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); 224ccd979bdSMark Fasheh if (IS_ERR(new)) { 225ccd979bdSMark Fasheh status = PTR_ERR(new); 226ccd979bdSMark Fasheh mlog_errno(status); 227ccd979bdSMark Fasheh goto bail; 228ccd979bdSMark Fasheh } 229ccd979bdSMark Fasheh osb->root_inode = new; 230ccd979bdSMark Fasheh 2315fa0613eSJan Kara new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); 232ccd979bdSMark Fasheh if (IS_ERR(new)) { 233ccd979bdSMark Fasheh status = PTR_ERR(new); 234ccd979bdSMark Fasheh mlog_errno(status); 235ccd979bdSMark Fasheh goto bail; 236ccd979bdSMark Fasheh } 237ccd979bdSMark Fasheh osb->sys_root_inode = new; 238ccd979bdSMark Fasheh 239ccd979bdSMark Fasheh for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; 240ccd979bdSMark Fasheh i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { 241ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 242ccd979bdSMark Fasheh if (!new) { 243ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 244ccd979bdSMark Fasheh status = -EINVAL; 245ccd979bdSMark Fasheh mlog_errno(status); 246ccd979bdSMark Fasheh /* FIXME: Should ERROR_RO_FS */ 247ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to load system inode %d, " 248ccd979bdSMark Fasheh "possibly corrupt fs?", i); 249ccd979bdSMark Fasheh goto bail; 250ccd979bdSMark Fasheh } 251ccd979bdSMark Fasheh // the array now has one ref, so drop this one 252ccd979bdSMark Fasheh iput(new); 253ccd979bdSMark Fasheh } 254ccd979bdSMark Fasheh 255ccd979bdSMark Fasheh bail: 256ccd979bdSMark Fasheh mlog_exit(status); 257ccd979bdSMark Fasheh return status; 258ccd979bdSMark Fasheh } 259ccd979bdSMark Fasheh 260ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) 261ccd979bdSMark Fasheh { 262ccd979bdSMark Fasheh struct inode *new = NULL; 263ccd979bdSMark Fasheh int status = 0; 264ccd979bdSMark Fasheh int i; 265ccd979bdSMark Fasheh 266ccd979bdSMark Fasheh mlog_entry_void(); 267ccd979bdSMark Fasheh 268ccd979bdSMark Fasheh for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; 269ccd979bdSMark Fasheh i < NUM_SYSTEM_INODES; 270ccd979bdSMark Fasheh i++) { 271ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 272ccd979bdSMark Fasheh if (!new) { 273ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 274ccd979bdSMark Fasheh status = -EINVAL; 275ccd979bdSMark Fasheh mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", 276ccd979bdSMark Fasheh status, i, osb->slot_num); 277ccd979bdSMark Fasheh goto bail; 278ccd979bdSMark Fasheh } 279ccd979bdSMark Fasheh /* the array now has one ref, so drop this one */ 280ccd979bdSMark Fasheh iput(new); 281ccd979bdSMark Fasheh } 282ccd979bdSMark Fasheh 283ccd979bdSMark Fasheh bail: 284ccd979bdSMark Fasheh mlog_exit(status); 285ccd979bdSMark Fasheh return status; 286ccd979bdSMark Fasheh } 287ccd979bdSMark Fasheh 288bddb8eb3SDenis Cheng static void ocfs2_release_system_inodes(struct ocfs2_super *osb) 289ccd979bdSMark Fasheh { 290bddb8eb3SDenis Cheng int i; 291ccd979bdSMark Fasheh struct inode *inode; 292ccd979bdSMark Fasheh 293ccd979bdSMark Fasheh mlog_entry_void(); 294ccd979bdSMark Fasheh 295ccd979bdSMark Fasheh for (i = 0; i < NUM_SYSTEM_INODES; i++) { 296ccd979bdSMark Fasheh inode = osb->system_inodes[i]; 297ccd979bdSMark Fasheh if (inode) { 298ccd979bdSMark Fasheh iput(inode); 299ccd979bdSMark Fasheh osb->system_inodes[i] = NULL; 300ccd979bdSMark Fasheh } 301ccd979bdSMark Fasheh } 302ccd979bdSMark Fasheh 303ccd979bdSMark Fasheh inode = osb->sys_root_inode; 304ccd979bdSMark Fasheh if (inode) { 305ccd979bdSMark Fasheh iput(inode); 306ccd979bdSMark Fasheh osb->sys_root_inode = NULL; 307ccd979bdSMark Fasheh } 308ccd979bdSMark Fasheh 309ccd979bdSMark Fasheh inode = osb->root_inode; 310ccd979bdSMark Fasheh if (inode) { 311ccd979bdSMark Fasheh iput(inode); 312ccd979bdSMark Fasheh osb->root_inode = NULL; 313ccd979bdSMark Fasheh } 314ccd979bdSMark Fasheh 315bddb8eb3SDenis Cheng mlog_exit(0); 316ccd979bdSMark Fasheh } 317ccd979bdSMark Fasheh 318ccd979bdSMark Fasheh /* We're allocating fs objects, use GFP_NOFS */ 319ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb) 320ccd979bdSMark Fasheh { 321ccd979bdSMark Fasheh struct ocfs2_inode_info *oi; 322ccd979bdSMark Fasheh 323e6b4f8daSChristoph Lameter oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); 324ccd979bdSMark Fasheh if (!oi) 325ccd979bdSMark Fasheh return NULL; 326ccd979bdSMark Fasheh 327ccd979bdSMark Fasheh return &oi->vfs_inode; 328ccd979bdSMark Fasheh } 329ccd979bdSMark Fasheh 330ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode) 331ccd979bdSMark Fasheh { 332ccd979bdSMark Fasheh kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); 333ccd979bdSMark Fasheh } 334ccd979bdSMark Fasheh 3355a254031SMark Fasheh static unsigned long long ocfs2_max_file_offset(unsigned int bbits, 3365a254031SMark Fasheh unsigned int cbits) 337ccd979bdSMark Fasheh { 3385a254031SMark Fasheh unsigned int bytes = 1 << cbits; 3395a254031SMark Fasheh unsigned int trim = bytes; 3405a254031SMark Fasheh unsigned int bitshift = 32; 341ccd979bdSMark Fasheh 3425a254031SMark Fasheh /* 3435a254031SMark Fasheh * i_size and all block offsets in ocfs2 are always 64 bits 3445a254031SMark Fasheh * wide. i_clusters is 32 bits, in cluster-sized units. So on 3455a254031SMark Fasheh * 64 bit platforms, cluster size will be the limiting factor. 346ccd979bdSMark Fasheh */ 347ccd979bdSMark Fasheh 348ccd979bdSMark Fasheh #if BITS_PER_LONG == 32 349ccd979bdSMark Fasheh # if defined(CONFIG_LBD) 3502ecd05aeSAlexey Dobriyan BUILD_BUG_ON(sizeof(sector_t) != 8); 3515a254031SMark Fasheh /* 3525a254031SMark Fasheh * We might be limited by page cache size. 3535a254031SMark Fasheh */ 3545a254031SMark Fasheh if (bytes > PAGE_CACHE_SIZE) { 3555a254031SMark Fasheh bytes = PAGE_CACHE_SIZE; 3565a254031SMark Fasheh trim = 1; 3575a254031SMark Fasheh /* 3585a254031SMark Fasheh * Shift by 31 here so that we don't get larger than 3595a254031SMark Fasheh * MAX_LFS_FILESIZE 3605a254031SMark Fasheh */ 3615a254031SMark Fasheh bitshift = 31; 3625a254031SMark Fasheh } 363ccd979bdSMark Fasheh # else 3645a254031SMark Fasheh /* 3655a254031SMark Fasheh * We are limited by the size of sector_t. Use block size, as 3665a254031SMark Fasheh * that's what we expose to the VFS. 3675a254031SMark Fasheh */ 3685a254031SMark Fasheh bytes = 1 << bbits; 3695a254031SMark Fasheh trim = 1; 3705a254031SMark Fasheh bitshift = 31; 371ccd979bdSMark Fasheh # endif 372ccd979bdSMark Fasheh #endif 373ccd979bdSMark Fasheh 3745a254031SMark Fasheh /* 3755a254031SMark Fasheh * Trim by a whole cluster when we can actually approach the 3765a254031SMark Fasheh * on-disk limits. Otherwise we can overflow i_clusters when 3775a254031SMark Fasheh * an extent start is at the max offset. 3785a254031SMark Fasheh */ 3795a254031SMark Fasheh return (((unsigned long long)bytes) << bitshift) - trim; 380ccd979bdSMark Fasheh } 381ccd979bdSMark Fasheh 382ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data) 383ccd979bdSMark Fasheh { 384ccd979bdSMark Fasheh int incompat_features; 385ccd979bdSMark Fasheh int ret = 0; 386c0123adeSTiger Yang struct mount_options parsed_options; 387ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 388ccd979bdSMark Fasheh 389c0123adeSTiger Yang if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { 390ccd979bdSMark Fasheh ret = -EINVAL; 391ccd979bdSMark Fasheh goto out; 392ccd979bdSMark Fasheh } 393ccd979bdSMark Fasheh 394ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != 395c0123adeSTiger Yang (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 396ccd979bdSMark Fasheh ret = -EINVAL; 397ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); 398ccd979bdSMark Fasheh goto out; 399ccd979bdSMark Fasheh } 400ccd979bdSMark Fasheh 401ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != 402c0123adeSTiger Yang (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { 403ccd979bdSMark Fasheh ret = -EINVAL; 404ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change data mode on remount\n"); 405ccd979bdSMark Fasheh goto out; 406ccd979bdSMark Fasheh } 407ccd979bdSMark Fasheh 408ccd979bdSMark Fasheh /* We're going to/from readonly mode. */ 409ccd979bdSMark Fasheh if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { 410ccd979bdSMark Fasheh /* Lock here so the check of HARD_RO and the potential 411ccd979bdSMark Fasheh * setting of SOFT_RO is atomic. */ 412ccd979bdSMark Fasheh spin_lock(&osb->osb_lock); 413ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_HARD_RO) { 414ccd979bdSMark Fasheh mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); 415ccd979bdSMark Fasheh ret = -EROFS; 416ccd979bdSMark Fasheh goto unlock_osb; 417ccd979bdSMark Fasheh } 418ccd979bdSMark Fasheh 419ccd979bdSMark Fasheh if (*flags & MS_RDONLY) { 420ccd979bdSMark Fasheh mlog(0, "Going to ro mode.\n"); 421ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 422ccd979bdSMark Fasheh osb->osb_flags |= OCFS2_OSB_SOFT_RO; 423ccd979bdSMark Fasheh } else { 424ccd979bdSMark Fasheh mlog(0, "Making ro filesystem writeable.\n"); 425ccd979bdSMark Fasheh 426ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { 427ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR " 428ccd979bdSMark Fasheh "filesystem due to previous errors.\n"); 429ccd979bdSMark Fasheh ret = -EROFS; 430ccd979bdSMark Fasheh goto unlock_osb; 431ccd979bdSMark Fasheh } 432ccd979bdSMark Fasheh incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); 433ccd979bdSMark Fasheh if (incompat_features) { 434ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR because " 435ccd979bdSMark Fasheh "of unsupported optional features " 436ccd979bdSMark Fasheh "(%x).\n", incompat_features); 437ccd979bdSMark Fasheh ret = -EINVAL; 438ccd979bdSMark Fasheh goto unlock_osb; 439ccd979bdSMark Fasheh } 440ccd979bdSMark Fasheh sb->s_flags &= ~MS_RDONLY; 441ccd979bdSMark Fasheh osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; 442ccd979bdSMark Fasheh } 443ccd979bdSMark Fasheh unlock_osb: 444ccd979bdSMark Fasheh spin_unlock(&osb->osb_lock); 445ccd979bdSMark Fasheh } 446ccd979bdSMark Fasheh 447ccd979bdSMark Fasheh if (!ret) { 448ccd979bdSMark Fasheh /* Only save off the new mount options in case of a successful 449ccd979bdSMark Fasheh * remount. */ 450c0123adeSTiger Yang osb->s_mount_opt = parsed_options.mount_opt; 451c0123adeSTiger Yang osb->s_atime_quantum = parsed_options.atime_quantum; 452c0123adeSTiger Yang osb->preferred_slot = parsed_options.slot; 453d147b3d6SMark Fasheh if (parsed_options.commit_interval) 454d147b3d6SMark Fasheh osb->osb_commit_interval = parsed_options.commit_interval; 455e001e796SMark Fasheh 456e001e796SMark Fasheh if (!ocfs2_is_hard_readonly(osb)) 457e001e796SMark Fasheh ocfs2_set_journal_params(osb); 458ccd979bdSMark Fasheh } 459ccd979bdSMark Fasheh out: 460ccd979bdSMark Fasheh return ret; 461ccd979bdSMark Fasheh } 462ccd979bdSMark Fasheh 463ccd979bdSMark Fasheh static int ocfs2_sb_probe(struct super_block *sb, 464ccd979bdSMark Fasheh struct buffer_head **bh, 465ccd979bdSMark Fasheh int *sector_size) 466ccd979bdSMark Fasheh { 467bddb8eb3SDenis Cheng int status, tmpstat; 468ccd979bdSMark Fasheh struct ocfs1_vol_disk_hdr *hdr; 469ccd979bdSMark Fasheh struct ocfs2_dinode *di; 470ccd979bdSMark Fasheh int blksize; 471ccd979bdSMark Fasheh 472ccd979bdSMark Fasheh *bh = NULL; 473ccd979bdSMark Fasheh 474ccd979bdSMark Fasheh /* may be > 512 */ 475ccd979bdSMark Fasheh *sector_size = bdev_hardsect_size(sb->s_bdev); 476ccd979bdSMark Fasheh if (*sector_size > OCFS2_MAX_BLOCKSIZE) { 477ccd979bdSMark Fasheh mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", 478ccd979bdSMark Fasheh *sector_size, OCFS2_MAX_BLOCKSIZE); 479ccd979bdSMark Fasheh status = -EINVAL; 480ccd979bdSMark Fasheh goto bail; 481ccd979bdSMark Fasheh } 482ccd979bdSMark Fasheh 483ccd979bdSMark Fasheh /* Can this really happen? */ 484ccd979bdSMark Fasheh if (*sector_size < OCFS2_MIN_BLOCKSIZE) 485ccd979bdSMark Fasheh *sector_size = OCFS2_MIN_BLOCKSIZE; 486ccd979bdSMark Fasheh 487ccd979bdSMark Fasheh /* check block zero for old format */ 488ccd979bdSMark Fasheh status = ocfs2_get_sector(sb, bh, 0, *sector_size); 489ccd979bdSMark Fasheh if (status < 0) { 490ccd979bdSMark Fasheh mlog_errno(status); 491ccd979bdSMark Fasheh goto bail; 492ccd979bdSMark Fasheh } 493ccd979bdSMark Fasheh hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; 494ccd979bdSMark Fasheh if (hdr->major_version == OCFS1_MAJOR_VERSION) { 495ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible version: %u.%u\n", 496ccd979bdSMark Fasheh hdr->major_version, hdr->minor_version); 497ccd979bdSMark Fasheh status = -EINVAL; 498ccd979bdSMark Fasheh } 499ccd979bdSMark Fasheh if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, 500ccd979bdSMark Fasheh strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { 501ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible volume signature: %8s\n", 502ccd979bdSMark Fasheh hdr->signature); 503ccd979bdSMark Fasheh status = -EINVAL; 504ccd979bdSMark Fasheh } 505ccd979bdSMark Fasheh brelse(*bh); 506ccd979bdSMark Fasheh *bh = NULL; 507ccd979bdSMark Fasheh if (status < 0) { 508ccd979bdSMark Fasheh mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " 509ccd979bdSMark Fasheh "upgraded before mounting with ocfs v2\n"); 510ccd979bdSMark Fasheh goto bail; 511ccd979bdSMark Fasheh } 512ccd979bdSMark Fasheh 513ccd979bdSMark Fasheh /* 514ccd979bdSMark Fasheh * Now check at magic offset for 512, 1024, 2048, 4096 515ccd979bdSMark Fasheh * blocksizes. 4096 is the maximum blocksize because it is 516ccd979bdSMark Fasheh * the minimum clustersize. 517ccd979bdSMark Fasheh */ 518ccd979bdSMark Fasheh status = -EINVAL; 519ccd979bdSMark Fasheh for (blksize = *sector_size; 520ccd979bdSMark Fasheh blksize <= OCFS2_MAX_BLOCKSIZE; 521ccd979bdSMark Fasheh blksize <<= 1) { 522ccd979bdSMark Fasheh tmpstat = ocfs2_get_sector(sb, bh, 523ccd979bdSMark Fasheh OCFS2_SUPER_BLOCK_BLKNO, 524ccd979bdSMark Fasheh blksize); 525ccd979bdSMark Fasheh if (tmpstat < 0) { 526ccd979bdSMark Fasheh status = tmpstat; 527ccd979bdSMark Fasheh mlog_errno(status); 528ccd979bdSMark Fasheh goto bail; 529ccd979bdSMark Fasheh } 530ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) (*bh)->b_data; 531ccd979bdSMark Fasheh status = ocfs2_verify_volume(di, *bh, blksize); 532ccd979bdSMark Fasheh if (status >= 0) 533ccd979bdSMark Fasheh goto bail; 534ccd979bdSMark Fasheh brelse(*bh); 535ccd979bdSMark Fasheh *bh = NULL; 536ccd979bdSMark Fasheh if (status != -EAGAIN) 537ccd979bdSMark Fasheh break; 538ccd979bdSMark Fasheh } 539ccd979bdSMark Fasheh 540ccd979bdSMark Fasheh bail: 541ccd979bdSMark Fasheh return status; 542ccd979bdSMark Fasheh } 543ccd979bdSMark Fasheh 544c271c5c2SSunil Mushran static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) 545c271c5c2SSunil Mushran { 546c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) { 547c271c5c2SSunil Mushran if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 548c271c5c2SSunil Mushran mlog(ML_ERROR, "Cannot heartbeat on a locally " 549c271c5c2SSunil Mushran "mounted device.\n"); 550c271c5c2SSunil Mushran return -EINVAL; 551c271c5c2SSunil Mushran } 552c271c5c2SSunil Mushran } 553c271c5c2SSunil Mushran 554c271c5c2SSunil Mushran if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 555c271c5c2SSunil Mushran if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb)) { 556c271c5c2SSunil Mushran mlog(ML_ERROR, "Heartbeat has to be started to mount " 557c271c5c2SSunil Mushran "a read-write clustered device.\n"); 558c271c5c2SSunil Mushran return -EINVAL; 559c271c5c2SSunil Mushran } 560c271c5c2SSunil Mushran } 561c271c5c2SSunil Mushran 562c271c5c2SSunil Mushran return 0; 563c271c5c2SSunil Mushran } 564c271c5c2SSunil Mushran 565ccd979bdSMark Fasheh static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) 566ccd979bdSMark Fasheh { 567ccd979bdSMark Fasheh struct dentry *root; 568ccd979bdSMark Fasheh int status, sector_size; 569c0123adeSTiger Yang struct mount_options parsed_options; 570ccd979bdSMark Fasheh struct inode *inode = NULL; 571ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 572ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 573c271c5c2SSunil Mushran char nodestr[8]; 574ccd979bdSMark Fasheh 575ccd979bdSMark Fasheh mlog_entry("%p, %p, %i", sb, data, silent); 576ccd979bdSMark Fasheh 577c0123adeSTiger Yang if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { 578c271c5c2SSunil Mushran status = -EINVAL; 579c271c5c2SSunil Mushran goto read_super_error; 580c271c5c2SSunil Mushran } 581c271c5c2SSunil Mushran 582ccd979bdSMark Fasheh /* for now we only have one cluster/node, make sure we see it 583ccd979bdSMark Fasheh * in the heartbeat universe */ 584c0123adeSTiger Yang if (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL) { 585ccd979bdSMark Fasheh if (!o2hb_check_local_node_heartbeating()) { 586ccd979bdSMark Fasheh status = -EINVAL; 587ccd979bdSMark Fasheh goto read_super_error; 588ccd979bdSMark Fasheh } 589c271c5c2SSunil Mushran } 590ccd979bdSMark Fasheh 591ccd979bdSMark Fasheh /* probe for superblock */ 592ccd979bdSMark Fasheh status = ocfs2_sb_probe(sb, &bh, §or_size); 593ccd979bdSMark Fasheh if (status < 0) { 594ccd979bdSMark Fasheh mlog(ML_ERROR, "superblock probe failed!\n"); 595ccd979bdSMark Fasheh goto read_super_error; 596ccd979bdSMark Fasheh } 597ccd979bdSMark Fasheh 598ccd979bdSMark Fasheh status = ocfs2_initialize_super(sb, bh, sector_size); 599ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 600ccd979bdSMark Fasheh if (status < 0) { 601ccd979bdSMark Fasheh mlog_errno(status); 602ccd979bdSMark Fasheh goto read_super_error; 603ccd979bdSMark Fasheh } 604ccd979bdSMark Fasheh brelse(bh); 605ccd979bdSMark Fasheh bh = NULL; 606c0123adeSTiger Yang osb->s_mount_opt = parsed_options.mount_opt; 607c0123adeSTiger Yang osb->s_atime_quantum = parsed_options.atime_quantum; 608c0123adeSTiger Yang osb->preferred_slot = parsed_options.slot; 609d147b3d6SMark Fasheh osb->osb_commit_interval = parsed_options.commit_interval; 6102fbe8d1eSSunil Mushran osb->local_alloc_size = parsed_options.localalloc_opt; 611ccd979bdSMark Fasheh 612ccd979bdSMark Fasheh sb->s_magic = OCFS2_SUPER_MAGIC; 613ccd979bdSMark Fasheh 614ccd979bdSMark Fasheh /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, 615ccd979bdSMark Fasheh * heartbeat=none */ 616ccd979bdSMark Fasheh if (bdev_read_only(sb->s_bdev)) { 617ccd979bdSMark Fasheh if (!(sb->s_flags & MS_RDONLY)) { 618ccd979bdSMark Fasheh status = -EACCES; 619ccd979bdSMark Fasheh mlog(ML_ERROR, "Readonly device detected but readonly " 620ccd979bdSMark Fasheh "mount was not specified.\n"); 621ccd979bdSMark Fasheh goto read_super_error; 622ccd979bdSMark Fasheh } 623ccd979bdSMark Fasheh 624ccd979bdSMark Fasheh /* You should not be able to start a local heartbeat 625ccd979bdSMark Fasheh * on a readonly device. */ 626ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 627ccd979bdSMark Fasheh status = -EROFS; 628ccd979bdSMark Fasheh mlog(ML_ERROR, "Local heartbeat specified on readonly " 629ccd979bdSMark Fasheh "device.\n"); 630ccd979bdSMark Fasheh goto read_super_error; 631ccd979bdSMark Fasheh } 632ccd979bdSMark Fasheh 633ccd979bdSMark Fasheh status = ocfs2_check_journals_nolocks(osb); 634ccd979bdSMark Fasheh if (status < 0) { 635ccd979bdSMark Fasheh if (status == -EROFS) 636ccd979bdSMark Fasheh mlog(ML_ERROR, "Recovery required on readonly " 637ccd979bdSMark Fasheh "file system, but write access is " 638ccd979bdSMark Fasheh "unavailable.\n"); 639ccd979bdSMark Fasheh else 640ccd979bdSMark Fasheh mlog_errno(status); 641ccd979bdSMark Fasheh goto read_super_error; 642ccd979bdSMark Fasheh } 643ccd979bdSMark Fasheh 644ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 1); 645ccd979bdSMark Fasheh 646ccd979bdSMark Fasheh printk(KERN_NOTICE "Readonly device detected. No cluster " 647ccd979bdSMark Fasheh "services will be utilized for this mount. Recovery " 648ccd979bdSMark Fasheh "will be skipped.\n"); 649ccd979bdSMark Fasheh } 650ccd979bdSMark Fasheh 651ccd979bdSMark Fasheh if (!ocfs2_is_hard_readonly(osb)) { 652ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY) 653ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 654ccd979bdSMark Fasheh } 655ccd979bdSMark Fasheh 656c271c5c2SSunil Mushran status = ocfs2_verify_heartbeat(osb); 657c271c5c2SSunil Mushran if (status < 0) { 658c271c5c2SSunil Mushran mlog_errno(status); 659c271c5c2SSunil Mushran goto read_super_error; 660c271c5c2SSunil Mushran } 661c271c5c2SSunil Mushran 662ccd979bdSMark Fasheh osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, 663ccd979bdSMark Fasheh ocfs2_debugfs_root); 664ccd979bdSMark Fasheh if (!osb->osb_debug_root) { 665ccd979bdSMark Fasheh status = -EINVAL; 666ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); 667ccd979bdSMark Fasheh goto read_super_error; 668ccd979bdSMark Fasheh } 669ccd979bdSMark Fasheh 670ccd979bdSMark Fasheh status = ocfs2_mount_volume(sb); 671ccd979bdSMark Fasheh if (osb->root_inode) 672ccd979bdSMark Fasheh inode = igrab(osb->root_inode); 673ccd979bdSMark Fasheh 674ccd979bdSMark Fasheh if (status < 0) 675ccd979bdSMark Fasheh goto read_super_error; 676ccd979bdSMark Fasheh 677ccd979bdSMark Fasheh if (!inode) { 678ccd979bdSMark Fasheh status = -EIO; 679ccd979bdSMark Fasheh mlog_errno(status); 680ccd979bdSMark Fasheh goto read_super_error; 681ccd979bdSMark Fasheh } 682ccd979bdSMark Fasheh 683ccd979bdSMark Fasheh root = d_alloc_root(inode); 684ccd979bdSMark Fasheh if (!root) { 685ccd979bdSMark Fasheh status = -ENOMEM; 686ccd979bdSMark Fasheh mlog_errno(status); 687ccd979bdSMark Fasheh goto read_super_error; 688ccd979bdSMark Fasheh } 689ccd979bdSMark Fasheh 690ccd979bdSMark Fasheh sb->s_root = root; 691ccd979bdSMark Fasheh 692ccd979bdSMark Fasheh ocfs2_complete_mount_recovery(osb); 693ccd979bdSMark Fasheh 694c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 695c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "local"); 696c271c5c2SSunil Mushran else 697c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); 698c271c5c2SSunil Mushran 699c271c5c2SSunil Mushran printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " 700781ee3e2SSunil Mushran "with %s data mode.\n", 701c271c5c2SSunil Mushran osb->dev_str, nodestr, osb->slot_num, 702ccd979bdSMark Fasheh osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : 703ccd979bdSMark Fasheh "ordered"); 704ccd979bdSMark Fasheh 705ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_MOUNTED); 706ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 707ccd979bdSMark Fasheh 708ccd979bdSMark Fasheh mlog_exit(status); 709ccd979bdSMark Fasheh return status; 710ccd979bdSMark Fasheh 711ccd979bdSMark Fasheh read_super_error: 712ccd979bdSMark Fasheh if (bh != NULL) 713ccd979bdSMark Fasheh brelse(bh); 714ccd979bdSMark Fasheh 715ccd979bdSMark Fasheh if (inode) 716ccd979bdSMark Fasheh iput(inode); 717ccd979bdSMark Fasheh 718ccd979bdSMark Fasheh if (osb) { 719ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISABLED); 720ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 721ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 1); 722ccd979bdSMark Fasheh } 723ccd979bdSMark Fasheh 724ccd979bdSMark Fasheh mlog_exit(status); 725ccd979bdSMark Fasheh return status; 726ccd979bdSMark Fasheh } 727ccd979bdSMark Fasheh 728454e2398SDavid Howells static int ocfs2_get_sb(struct file_system_type *fs_type, 729ccd979bdSMark Fasheh int flags, 730ccd979bdSMark Fasheh const char *dev_name, 731454e2398SDavid Howells void *data, 732454e2398SDavid Howells struct vfsmount *mnt) 733ccd979bdSMark Fasheh { 734454e2398SDavid Howells return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, 735454e2398SDavid Howells mnt); 736ccd979bdSMark Fasheh } 737ccd979bdSMark Fasheh 738ccd979bdSMark Fasheh static struct file_system_type ocfs2_fs_type = { 739ccd979bdSMark Fasheh .owner = THIS_MODULE, 740ccd979bdSMark Fasheh .name = "ocfs2", 741ccd979bdSMark Fasheh .get_sb = ocfs2_get_sb, /* is this called when we mount 742ccd979bdSMark Fasheh * the fs? */ 743ccd979bdSMark Fasheh .kill_sb = kill_block_super, /* set to the generic one 744ccd979bdSMark Fasheh * right now, but do we 745ccd979bdSMark Fasheh * need to change that? */ 7461ba9da2fSMark Fasheh .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, 747ccd979bdSMark Fasheh .next = NULL 748ccd979bdSMark Fasheh }; 749ccd979bdSMark Fasheh 750ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, 751ccd979bdSMark Fasheh char *options, 752c0123adeSTiger Yang struct mount_options *mopt, 753ccd979bdSMark Fasheh int is_remount) 754ccd979bdSMark Fasheh { 755ccd979bdSMark Fasheh int status; 756ccd979bdSMark Fasheh char *p; 757ccd979bdSMark Fasheh 758ccd979bdSMark Fasheh mlog_entry("remount: %d, options: \"%s\"\n", is_remount, 759ccd979bdSMark Fasheh options ? options : "(none)"); 760ccd979bdSMark Fasheh 761d147b3d6SMark Fasheh mopt->commit_interval = 0; 762c0123adeSTiger Yang mopt->mount_opt = 0; 763c0123adeSTiger Yang mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; 764c0123adeSTiger Yang mopt->slot = OCFS2_INVALID_SLOT; 7652fbe8d1eSSunil Mushran mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; 766ccd979bdSMark Fasheh 767ccd979bdSMark Fasheh if (!options) { 768ccd979bdSMark Fasheh status = 1; 769ccd979bdSMark Fasheh goto bail; 770ccd979bdSMark Fasheh } 771ccd979bdSMark Fasheh 772ccd979bdSMark Fasheh while ((p = strsep(&options, ",")) != NULL) { 773ccd979bdSMark Fasheh int token, option; 774ccd979bdSMark Fasheh substring_t args[MAX_OPT_ARGS]; 775ccd979bdSMark Fasheh 776ccd979bdSMark Fasheh if (!*p) 777ccd979bdSMark Fasheh continue; 778ccd979bdSMark Fasheh 779ccd979bdSMark Fasheh token = match_token(p, tokens, args); 780ccd979bdSMark Fasheh switch (token) { 781ccd979bdSMark Fasheh case Opt_hb_local: 782c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; 783ccd979bdSMark Fasheh break; 784ccd979bdSMark Fasheh case Opt_hb_none: 785c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; 786ccd979bdSMark Fasheh break; 787ccd979bdSMark Fasheh case Opt_barrier: 788ccd979bdSMark Fasheh if (match_int(&args[0], &option)) { 789ccd979bdSMark Fasheh status = 0; 790ccd979bdSMark Fasheh goto bail; 791ccd979bdSMark Fasheh } 792ccd979bdSMark Fasheh if (option) 793c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_BARRIER; 794ccd979bdSMark Fasheh else 795c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; 796ccd979bdSMark Fasheh break; 797ccd979bdSMark Fasheh case Opt_intr: 798c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; 799ccd979bdSMark Fasheh break; 800ccd979bdSMark Fasheh case Opt_nointr: 801c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_NOINTR; 802ccd979bdSMark Fasheh break; 803ccd979bdSMark Fasheh case Opt_err_panic: 804c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 805ccd979bdSMark Fasheh break; 806ccd979bdSMark Fasheh case Opt_err_ro: 807c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; 808ccd979bdSMark Fasheh break; 809ccd979bdSMark Fasheh case Opt_data_ordered: 810c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; 811ccd979bdSMark Fasheh break; 812ccd979bdSMark Fasheh case Opt_data_writeback: 813c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; 814ccd979bdSMark Fasheh break; 8157f1a37e3STiger Yang case Opt_atime_quantum: 8167f1a37e3STiger Yang if (match_int(&args[0], &option)) { 8177f1a37e3STiger Yang status = 0; 8187f1a37e3STiger Yang goto bail; 8197f1a37e3STiger Yang } 8207f1a37e3STiger Yang if (option >= 0) 821c0123adeSTiger Yang mopt->atime_quantum = option; 8227f1a37e3STiger Yang break; 823baf4661aSSunil Mushran case Opt_slot: 824baf4661aSSunil Mushran option = 0; 825baf4661aSSunil Mushran if (match_int(&args[0], &option)) { 826baf4661aSSunil Mushran status = 0; 827baf4661aSSunil Mushran goto bail; 828baf4661aSSunil Mushran } 829baf4661aSSunil Mushran if (option) 830c0123adeSTiger Yang mopt->slot = (s16)option; 831baf4661aSSunil Mushran break; 832d147b3d6SMark Fasheh case Opt_commit: 833d147b3d6SMark Fasheh option = 0; 834d147b3d6SMark Fasheh if (match_int(&args[0], &option)) { 835d147b3d6SMark Fasheh status = 0; 836d147b3d6SMark Fasheh goto bail; 837d147b3d6SMark Fasheh } 838d147b3d6SMark Fasheh if (option < 0) 839d147b3d6SMark Fasheh return 0; 840d147b3d6SMark Fasheh if (option == 0) 841d147b3d6SMark Fasheh option = JBD_DEFAULT_MAX_COMMIT_AGE; 842d147b3d6SMark Fasheh mopt->commit_interval = HZ * option; 843d147b3d6SMark Fasheh break; 8442fbe8d1eSSunil Mushran case Opt_localalloc: 8452fbe8d1eSSunil Mushran option = 0; 8462fbe8d1eSSunil Mushran if (match_int(&args[0], &option)) { 8472fbe8d1eSSunil Mushran status = 0; 8482fbe8d1eSSunil Mushran goto bail; 8492fbe8d1eSSunil Mushran } 8502fbe8d1eSSunil Mushran if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) 8512fbe8d1eSSunil Mushran mopt->localalloc_opt = option; 8522fbe8d1eSSunil Mushran break; 85353fc622bSMark Fasheh case Opt_localflocks: 85453fc622bSMark Fasheh /* 85553fc622bSMark Fasheh * Changing this during remount could race 85653fc622bSMark Fasheh * flock() requests, or "unbalance" existing 85753fc622bSMark Fasheh * ones (e.g., a lock is taken in one mode but 85853fc622bSMark Fasheh * dropped in the other). If users care enough 85953fc622bSMark Fasheh * to flip locking modes during remount, we 86053fc622bSMark Fasheh * could add a "local" flag to individual 86153fc622bSMark Fasheh * flock structures for proper tracking of 86253fc622bSMark Fasheh * state. 86353fc622bSMark Fasheh */ 86453fc622bSMark Fasheh if (!is_remount) 86553fc622bSMark Fasheh mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; 86653fc622bSMark Fasheh break; 867ccd979bdSMark Fasheh default: 868ccd979bdSMark Fasheh mlog(ML_ERROR, 869ccd979bdSMark Fasheh "Unrecognized mount option \"%s\" " 870ccd979bdSMark Fasheh "or missing value\n", p); 871ccd979bdSMark Fasheh status = 0; 872ccd979bdSMark Fasheh goto bail; 873ccd979bdSMark Fasheh } 874ccd979bdSMark Fasheh } 875ccd979bdSMark Fasheh 876ccd979bdSMark Fasheh status = 1; 877ccd979bdSMark Fasheh 878ccd979bdSMark Fasheh bail: 879ccd979bdSMark Fasheh mlog_exit(status); 880ccd979bdSMark Fasheh return status; 881ccd979bdSMark Fasheh } 882ccd979bdSMark Fasheh 883d550071cSSunil Mushran static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) 884d550071cSSunil Mushran { 885d550071cSSunil Mushran struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); 886d550071cSSunil Mushran unsigned long opts = osb->s_mount_opt; 887d550071cSSunil Mushran 888d550071cSSunil Mushran if (opts & OCFS2_MOUNT_HB_LOCAL) 889d550071cSSunil Mushran seq_printf(s, ",_netdev,heartbeat=local"); 890d550071cSSunil Mushran else 891d550071cSSunil Mushran seq_printf(s, ",heartbeat=none"); 892d550071cSSunil Mushran 893d550071cSSunil Mushran if (opts & OCFS2_MOUNT_NOINTR) 894d550071cSSunil Mushran seq_printf(s, ",nointr"); 895d550071cSSunil Mushran 896d550071cSSunil Mushran if (opts & OCFS2_MOUNT_DATA_WRITEBACK) 897d550071cSSunil Mushran seq_printf(s, ",data=writeback"); 898d550071cSSunil Mushran else 899d550071cSSunil Mushran seq_printf(s, ",data=ordered"); 900d550071cSSunil Mushran 901d550071cSSunil Mushran if (opts & OCFS2_MOUNT_BARRIER) 902d550071cSSunil Mushran seq_printf(s, ",barrier=1"); 903d550071cSSunil Mushran 904d550071cSSunil Mushran if (opts & OCFS2_MOUNT_ERRORS_PANIC) 905d550071cSSunil Mushran seq_printf(s, ",errors=panic"); 906d550071cSSunil Mushran else 907d550071cSSunil Mushran seq_printf(s, ",errors=remount-ro"); 908d550071cSSunil Mushran 909d550071cSSunil Mushran if (osb->preferred_slot != OCFS2_INVALID_SLOT) 910d550071cSSunil Mushran seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); 911d550071cSSunil Mushran 912d550071cSSunil Mushran if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) 913d550071cSSunil Mushran seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); 914d550071cSSunil Mushran 915d147b3d6SMark Fasheh if (osb->osb_commit_interval) 916d147b3d6SMark Fasheh seq_printf(s, ",commit=%u", 917d147b3d6SMark Fasheh (unsigned) (osb->osb_commit_interval / HZ)); 918d147b3d6SMark Fasheh 9192fbe8d1eSSunil Mushran if (osb->local_alloc_size != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) 9202fbe8d1eSSunil Mushran seq_printf(s, ",localalloc=%d", osb->local_alloc_size); 9212fbe8d1eSSunil Mushran 92253fc622bSMark Fasheh if (opts & OCFS2_MOUNT_LOCALFLOCKS) 92353fc622bSMark Fasheh seq_printf(s, ",localflocks,"); 92453fc622bSMark Fasheh 925d550071cSSunil Mushran return 0; 926d550071cSSunil Mushran } 927d550071cSSunil Mushran 928ccd979bdSMark Fasheh static int __init ocfs2_init(void) 929ccd979bdSMark Fasheh { 930ccd979bdSMark Fasheh int status; 931ccd979bdSMark Fasheh 932ccd979bdSMark Fasheh mlog_entry_void(); 933ccd979bdSMark Fasheh 934ccd979bdSMark Fasheh ocfs2_print_version(); 935ccd979bdSMark Fasheh 93624ef1815SJoel Becker dlmglue_init_stack(); 93724ef1815SJoel Becker 938ccd979bdSMark Fasheh status = init_ocfs2_uptodate_cache(); 939ccd979bdSMark Fasheh if (status < 0) { 940ccd979bdSMark Fasheh mlog_errno(status); 941ccd979bdSMark Fasheh goto leave; 942ccd979bdSMark Fasheh } 943ccd979bdSMark Fasheh 944ccd979bdSMark Fasheh status = ocfs2_initialize_mem_caches(); 945ccd979bdSMark Fasheh if (status < 0) { 946ccd979bdSMark Fasheh mlog_errno(status); 947ccd979bdSMark Fasheh goto leave; 948ccd979bdSMark Fasheh } 949ccd979bdSMark Fasheh 950ccd979bdSMark Fasheh ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); 951ccd979bdSMark Fasheh if (!ocfs2_wq) { 952ccd979bdSMark Fasheh status = -ENOMEM; 953ccd979bdSMark Fasheh goto leave; 954ccd979bdSMark Fasheh } 955ccd979bdSMark Fasheh 956ccd979bdSMark Fasheh ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); 957ccd979bdSMark Fasheh if (!ocfs2_debugfs_root) { 958ccd979bdSMark Fasheh status = -EFAULT; 959ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); 960ccd979bdSMark Fasheh } 961ccd979bdSMark Fasheh 962ccd979bdSMark Fasheh leave: 963ccd979bdSMark Fasheh if (status < 0) { 964ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 965ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 966ccd979bdSMark Fasheh } 967ccd979bdSMark Fasheh 968ccd979bdSMark Fasheh mlog_exit(status); 969ccd979bdSMark Fasheh 970ccd979bdSMark Fasheh if (status >= 0) { 971ccd979bdSMark Fasheh return register_filesystem(&ocfs2_fs_type); 972ccd979bdSMark Fasheh } else 973ccd979bdSMark Fasheh return -1; 974ccd979bdSMark Fasheh } 975ccd979bdSMark Fasheh 976ccd979bdSMark Fasheh static void __exit ocfs2_exit(void) 977ccd979bdSMark Fasheh { 978ccd979bdSMark Fasheh mlog_entry_void(); 979ccd979bdSMark Fasheh 980ccd979bdSMark Fasheh if (ocfs2_wq) { 981ccd979bdSMark Fasheh flush_workqueue(ocfs2_wq); 982ccd979bdSMark Fasheh destroy_workqueue(ocfs2_wq); 983ccd979bdSMark Fasheh } 984ccd979bdSMark Fasheh 985ccd979bdSMark Fasheh debugfs_remove(ocfs2_debugfs_root); 986ccd979bdSMark Fasheh 987ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 988ccd979bdSMark Fasheh 989ccd979bdSMark Fasheh unregister_filesystem(&ocfs2_fs_type); 990ccd979bdSMark Fasheh 991ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 992ccd979bdSMark Fasheh 99324ef1815SJoel Becker dlmglue_exit_stack(); 99424ef1815SJoel Becker 995ccd979bdSMark Fasheh mlog_exit_void(); 996ccd979bdSMark Fasheh } 997ccd979bdSMark Fasheh 998ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb) 999ccd979bdSMark Fasheh { 1000ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 1001ccd979bdSMark Fasheh 1002ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 1003ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 0); 1004ccd979bdSMark Fasheh 1005ccd979bdSMark Fasheh mlog_exit_void(); 1006ccd979bdSMark Fasheh } 1007ccd979bdSMark Fasheh 1008726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 1009ccd979bdSMark Fasheh { 1010ccd979bdSMark Fasheh struct ocfs2_super *osb; 1011ccd979bdSMark Fasheh u32 numbits, freebits; 1012ccd979bdSMark Fasheh int status; 1013ccd979bdSMark Fasheh struct ocfs2_dinode *bm_lock; 1014ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 1015ccd979bdSMark Fasheh struct inode *inode = NULL; 1016ccd979bdSMark Fasheh 1017726c3342SDavid Howells mlog_entry("(%p, %p)\n", dentry->d_sb, buf); 1018ccd979bdSMark Fasheh 1019726c3342SDavid Howells osb = OCFS2_SB(dentry->d_sb); 1020ccd979bdSMark Fasheh 1021ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, 1022ccd979bdSMark Fasheh GLOBAL_BITMAP_SYSTEM_INODE, 1023ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1024ccd979bdSMark Fasheh if (!inode) { 1025ccd979bdSMark Fasheh mlog(ML_ERROR, "failed to get bitmap inode\n"); 1026ccd979bdSMark Fasheh status = -EIO; 1027ccd979bdSMark Fasheh goto bail; 1028ccd979bdSMark Fasheh } 1029ccd979bdSMark Fasheh 1030e63aecb6SMark Fasheh status = ocfs2_inode_lock(inode, &bh, 0); 1031ccd979bdSMark Fasheh if (status < 0) { 1032ccd979bdSMark Fasheh mlog_errno(status); 1033ccd979bdSMark Fasheh goto bail; 1034ccd979bdSMark Fasheh } 1035ccd979bdSMark Fasheh 1036ccd979bdSMark Fasheh bm_lock = (struct ocfs2_dinode *) bh->b_data; 1037ccd979bdSMark Fasheh 1038ccd979bdSMark Fasheh numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); 1039ccd979bdSMark Fasheh freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); 1040ccd979bdSMark Fasheh 1041ccd979bdSMark Fasheh buf->f_type = OCFS2_SUPER_MAGIC; 1042726c3342SDavid Howells buf->f_bsize = dentry->d_sb->s_blocksize; 1043ccd979bdSMark Fasheh buf->f_namelen = OCFS2_MAX_FILENAME_LEN; 1044ccd979bdSMark Fasheh buf->f_blocks = ((sector_t) numbits) * 1045ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 1046ccd979bdSMark Fasheh buf->f_bfree = ((sector_t) freebits) * 1047ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 1048ccd979bdSMark Fasheh buf->f_bavail = buf->f_bfree; 1049ccd979bdSMark Fasheh buf->f_files = numbits; 1050ccd979bdSMark Fasheh buf->f_ffree = freebits; 1051ccd979bdSMark Fasheh 1052ccd979bdSMark Fasheh brelse(bh); 1053ccd979bdSMark Fasheh 1054e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 0); 1055ccd979bdSMark Fasheh status = 0; 1056ccd979bdSMark Fasheh bail: 1057ccd979bdSMark Fasheh if (inode) 1058ccd979bdSMark Fasheh iput(inode); 1059ccd979bdSMark Fasheh 1060ccd979bdSMark Fasheh mlog_exit(status); 1061ccd979bdSMark Fasheh 1062ccd979bdSMark Fasheh return status; 1063ccd979bdSMark Fasheh } 1064ccd979bdSMark Fasheh 10654ba9b9d0SChristoph Lameter static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data) 1066ccd979bdSMark Fasheh { 1067ccd979bdSMark Fasheh struct ocfs2_inode_info *oi = data; 1068ccd979bdSMark Fasheh 1069ccd979bdSMark Fasheh oi->ip_flags = 0; 1070ccd979bdSMark Fasheh oi->ip_open_count = 0; 1071ccd979bdSMark Fasheh spin_lock_init(&oi->ip_lock); 107283418978SMark Fasheh ocfs2_extent_map_init(&oi->vfs_inode); 1073ccd979bdSMark Fasheh INIT_LIST_HEAD(&oi->ip_io_markers); 1074ccd979bdSMark Fasheh oi->ip_created_trans = 0; 1075ccd979bdSMark Fasheh oi->ip_last_trans = 0; 1076ccd979bdSMark Fasheh oi->ip_dir_start_lookup = 0; 1077ccd979bdSMark Fasheh 1078ccd979bdSMark Fasheh init_rwsem(&oi->ip_alloc_sem); 1079251b6eccSMark Fasheh mutex_init(&oi->ip_io_mutex); 1080ccd979bdSMark Fasheh 1081ccd979bdSMark Fasheh oi->ip_blkno = 0ULL; 1082ccd979bdSMark Fasheh oi->ip_clusters = 0; 1083ccd979bdSMark Fasheh 1084ccd979bdSMark Fasheh ocfs2_lock_res_init_once(&oi->ip_rw_lockres); 1085e63aecb6SMark Fasheh ocfs2_lock_res_init_once(&oi->ip_inode_lockres); 108650008630STiger Yang ocfs2_lock_res_init_once(&oi->ip_open_lockres); 1087ccd979bdSMark Fasheh 1088ccd979bdSMark Fasheh ocfs2_metadata_cache_init(&oi->vfs_inode); 1089ccd979bdSMark Fasheh 1090ccd979bdSMark Fasheh inode_init_once(&oi->vfs_inode); 1091ccd979bdSMark Fasheh } 1092ccd979bdSMark Fasheh 1093ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void) 1094ccd979bdSMark Fasheh { 1095ccd979bdSMark Fasheh ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", 1096ccd979bdSMark Fasheh sizeof(struct ocfs2_inode_info), 1097fffb60f9SPaul Jackson 0, 1098fffb60f9SPaul Jackson (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| 1099fffb60f9SPaul Jackson SLAB_MEM_SPREAD), 110020c2df83SPaul Mundt ocfs2_inode_init_once); 1101ccd979bdSMark Fasheh if (!ocfs2_inode_cachep) 1102ccd979bdSMark Fasheh return -ENOMEM; 1103ccd979bdSMark Fasheh 1104ccd979bdSMark Fasheh return 0; 1105ccd979bdSMark Fasheh } 1106ccd979bdSMark Fasheh 1107ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void) 1108ccd979bdSMark Fasheh { 1109ccd979bdSMark Fasheh if (ocfs2_inode_cachep) 1110ccd979bdSMark Fasheh kmem_cache_destroy(ocfs2_inode_cachep); 1111ccd979bdSMark Fasheh 1112ccd979bdSMark Fasheh ocfs2_inode_cachep = NULL; 1113ccd979bdSMark Fasheh } 1114ccd979bdSMark Fasheh 1115ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 1116ccd979bdSMark Fasheh struct buffer_head **bh, 1117ccd979bdSMark Fasheh int block, 1118ccd979bdSMark Fasheh int sect_size) 1119ccd979bdSMark Fasheh { 1120ccd979bdSMark Fasheh if (!sb_set_blocksize(sb, sect_size)) { 1121ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to set blocksize\n"); 1122ccd979bdSMark Fasheh return -EIO; 1123ccd979bdSMark Fasheh } 1124ccd979bdSMark Fasheh 1125ccd979bdSMark Fasheh *bh = sb_getblk(sb, block); 1126ccd979bdSMark Fasheh if (!*bh) { 1127ccd979bdSMark Fasheh mlog_errno(-EIO); 1128ccd979bdSMark Fasheh return -EIO; 1129ccd979bdSMark Fasheh } 1130ccd979bdSMark Fasheh lock_buffer(*bh); 1131ccd979bdSMark Fasheh if (!buffer_dirty(*bh)) 1132ccd979bdSMark Fasheh clear_buffer_uptodate(*bh); 1133ccd979bdSMark Fasheh unlock_buffer(*bh); 1134ccd979bdSMark Fasheh ll_rw_block(READ, 1, bh); 1135ccd979bdSMark Fasheh wait_on_buffer(*bh); 1136ccd979bdSMark Fasheh return 0; 1137ccd979bdSMark Fasheh } 1138ccd979bdSMark Fasheh 1139ccd979bdSMark Fasheh /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ 1140ccd979bdSMark Fasheh static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) 1141ccd979bdSMark Fasheh { 1142ccd979bdSMark Fasheh int status; 1143ccd979bdSMark Fasheh 1144ccd979bdSMark Fasheh /* XXX hold a ref on the node while mounte? easy enough, if 1145ccd979bdSMark Fasheh * desirable. */ 1146c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1147c271c5c2SSunil Mushran osb->node_num = 0; 1148c271c5c2SSunil Mushran else 1149ccd979bdSMark Fasheh osb->node_num = o2nm_this_node(); 1150c271c5c2SSunil Mushran 1151ccd979bdSMark Fasheh if (osb->node_num == O2NM_MAX_NODES) { 1152ccd979bdSMark Fasheh mlog(ML_ERROR, "could not find this host's node number\n"); 1153ccd979bdSMark Fasheh status = -ENOENT; 1154ccd979bdSMark Fasheh goto bail; 1155ccd979bdSMark Fasheh } 1156ccd979bdSMark Fasheh 1157781ee3e2SSunil Mushran mlog(0, "I am node %d\n", osb->node_num); 1158ccd979bdSMark Fasheh 1159ccd979bdSMark Fasheh status = 0; 1160ccd979bdSMark Fasheh bail: 1161ccd979bdSMark Fasheh return status; 1162ccd979bdSMark Fasheh } 1163ccd979bdSMark Fasheh 1164ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb) 1165ccd979bdSMark Fasheh { 1166ccd979bdSMark Fasheh int status = 0; 1167ccd979bdSMark Fasheh int unlock_super = 0; 1168ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1169ccd979bdSMark Fasheh 1170ccd979bdSMark Fasheh mlog_entry_void(); 1171ccd979bdSMark Fasheh 1172ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 1173ccd979bdSMark Fasheh goto leave; 1174ccd979bdSMark Fasheh 1175ccd979bdSMark Fasheh status = ocfs2_fill_local_node_info(osb); 1176ccd979bdSMark Fasheh if (status < 0) { 1177ccd979bdSMark Fasheh mlog_errno(status); 1178ccd979bdSMark Fasheh goto leave; 1179ccd979bdSMark Fasheh } 1180ccd979bdSMark Fasheh 1181ccd979bdSMark Fasheh status = ocfs2_dlm_init(osb); 1182ccd979bdSMark Fasheh if (status < 0) { 1183ccd979bdSMark Fasheh mlog_errno(status); 1184ccd979bdSMark Fasheh goto leave; 1185ccd979bdSMark Fasheh } 1186ccd979bdSMark Fasheh 1187ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 1188ccd979bdSMark Fasheh if (status < 0) { 1189ccd979bdSMark Fasheh mlog_errno(status); 1190ccd979bdSMark Fasheh goto leave; 1191ccd979bdSMark Fasheh } 1192ccd979bdSMark Fasheh unlock_super = 1; 1193ccd979bdSMark Fasheh 1194ccd979bdSMark Fasheh /* This will load up the node map and add ourselves to it. */ 1195ccd979bdSMark Fasheh status = ocfs2_find_slot(osb); 1196ccd979bdSMark Fasheh if (status < 0) { 1197ccd979bdSMark Fasheh mlog_errno(status); 1198ccd979bdSMark Fasheh goto leave; 1199ccd979bdSMark Fasheh } 1200ccd979bdSMark Fasheh 1201ccd979bdSMark Fasheh /* load all node-local system inodes */ 1202ccd979bdSMark Fasheh status = ocfs2_init_local_system_inodes(osb); 1203ccd979bdSMark Fasheh if (status < 0) { 1204ccd979bdSMark Fasheh mlog_errno(status); 1205ccd979bdSMark Fasheh goto leave; 1206ccd979bdSMark Fasheh } 1207ccd979bdSMark Fasheh 1208ccd979bdSMark Fasheh status = ocfs2_check_volume(osb); 1209ccd979bdSMark Fasheh if (status < 0) { 1210ccd979bdSMark Fasheh mlog_errno(status); 1211ccd979bdSMark Fasheh goto leave; 1212ccd979bdSMark Fasheh } 1213ccd979bdSMark Fasheh 1214ccd979bdSMark Fasheh status = ocfs2_truncate_log_init(osb); 1215ccd979bdSMark Fasheh if (status < 0) { 1216ccd979bdSMark Fasheh mlog_errno(status); 1217ccd979bdSMark Fasheh goto leave; 1218ccd979bdSMark Fasheh } 1219ccd979bdSMark Fasheh 1220c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1221c271c5c2SSunil Mushran goto leave; 1222c271c5c2SSunil Mushran 1223ccd979bdSMark Fasheh leave: 1224ccd979bdSMark Fasheh if (unlock_super) 1225ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1226ccd979bdSMark Fasheh 1227ccd979bdSMark Fasheh mlog_exit(status); 1228ccd979bdSMark Fasheh return status; 1229ccd979bdSMark Fasheh } 1230ccd979bdSMark Fasheh 1231ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) 1232ccd979bdSMark Fasheh { 1233ccd979bdSMark Fasheh int tmp; 1234ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 1235c271c5c2SSunil Mushran char nodestr[8]; 1236ccd979bdSMark Fasheh 1237ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 1238ccd979bdSMark Fasheh 1239ccd979bdSMark Fasheh BUG_ON(!sb); 1240ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 1241ccd979bdSMark Fasheh BUG_ON(!osb); 1242ccd979bdSMark Fasheh 1243ccd979bdSMark Fasheh ocfs2_shutdown_local_alloc(osb); 1244ccd979bdSMark Fasheh 1245ccd979bdSMark Fasheh ocfs2_truncate_log_shutdown(osb); 1246ccd979bdSMark Fasheh 1247553abd04SJoel Becker /* This will disable recovery and flush any recovery work. */ 1248553abd04SJoel Becker ocfs2_recovery_exit(osb); 1249ccd979bdSMark Fasheh 1250ccd979bdSMark Fasheh ocfs2_journal_shutdown(osb); 1251ccd979bdSMark Fasheh 1252ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 1253ccd979bdSMark Fasheh 12544670c46dSJoel Becker /* No cluster connection means we've failed during mount, so skip 12554670c46dSJoel Becker * all the steps which depended on that to complete. */ 12564670c46dSJoel Becker if (osb->cconn) { 1257ccd979bdSMark Fasheh tmp = ocfs2_super_lock(osb, 1); 1258ccd979bdSMark Fasheh if (tmp < 0) { 1259ccd979bdSMark Fasheh mlog_errno(tmp); 1260ccd979bdSMark Fasheh return; 1261ccd979bdSMark Fasheh } 126219b613d4SMark Fasheh } 1263ccd979bdSMark Fasheh 1264ccd979bdSMark Fasheh if (osb->slot_num != OCFS2_INVALID_SLOT) 1265ccd979bdSMark Fasheh ocfs2_put_slot(osb); 1266ccd979bdSMark Fasheh 12674670c46dSJoel Becker if (osb->cconn) 1268ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1269ccd979bdSMark Fasheh 1270ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 1271ccd979bdSMark Fasheh 12724670c46dSJoel Becker if (osb->cconn) 1273ccd979bdSMark Fasheh ocfs2_dlm_shutdown(osb); 1274ccd979bdSMark Fasheh 1275ccd979bdSMark Fasheh debugfs_remove(osb->osb_debug_root); 1276ccd979bdSMark Fasheh 1277ccd979bdSMark Fasheh if (!mnt_err) 1278ccd979bdSMark Fasheh ocfs2_stop_heartbeat(osb); 1279ccd979bdSMark Fasheh 1280ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); 1281ccd979bdSMark Fasheh 1282c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1283c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "local"); 1284c271c5c2SSunil Mushran else 1285c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); 1286c271c5c2SSunil Mushran 1287c271c5c2SSunil Mushran printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", 1288c271c5c2SSunil Mushran osb->dev_str, nodestr); 1289ccd979bdSMark Fasheh 1290ccd979bdSMark Fasheh ocfs2_delete_osb(osb); 1291ccd979bdSMark Fasheh kfree(osb); 1292ccd979bdSMark Fasheh sb->s_dev = 0; 1293ccd979bdSMark Fasheh sb->s_fs_info = NULL; 1294ccd979bdSMark Fasheh } 1295ccd979bdSMark Fasheh 1296ccd979bdSMark Fasheh static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, 1297ccd979bdSMark Fasheh unsigned uuid_bytes) 1298ccd979bdSMark Fasheh { 1299ccd979bdSMark Fasheh int i, ret; 1300ccd979bdSMark Fasheh char *ptr; 1301ccd979bdSMark Fasheh 1302ccd979bdSMark Fasheh BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); 1303ccd979bdSMark Fasheh 1304cd861280SRobert P. J. Day osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); 1305ccd979bdSMark Fasheh if (osb->uuid_str == NULL) 1306ccd979bdSMark Fasheh return -ENOMEM; 1307ccd979bdSMark Fasheh 1308ccd979bdSMark Fasheh for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { 1309ccd979bdSMark Fasheh /* print with null */ 1310ccd979bdSMark Fasheh ret = snprintf(ptr, 3, "%02X", uuid[i]); 1311ccd979bdSMark Fasheh if (ret != 2) /* drop super cleans up */ 1312ccd979bdSMark Fasheh return -EINVAL; 1313ccd979bdSMark Fasheh /* then only advance past the last char */ 1314ccd979bdSMark Fasheh ptr += 2; 1315ccd979bdSMark Fasheh } 1316ccd979bdSMark Fasheh 1317ccd979bdSMark Fasheh return 0; 1318ccd979bdSMark Fasheh } 1319ccd979bdSMark Fasheh 1320ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 1321ccd979bdSMark Fasheh struct buffer_head *bh, 1322ccd979bdSMark Fasheh int sector_size) 1323ccd979bdSMark Fasheh { 1324bddb8eb3SDenis Cheng int status; 13255a254031SMark Fasheh int i, cbits, bbits; 13265a254031SMark Fasheh struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; 1327ccd979bdSMark Fasheh struct inode *inode = NULL; 1328ccd979bdSMark Fasheh struct ocfs2_journal *journal; 1329ccd979bdSMark Fasheh __le32 uuid_net_key; 1330ccd979bdSMark Fasheh struct ocfs2_super *osb; 1331ccd979bdSMark Fasheh 1332ccd979bdSMark Fasheh mlog_entry_void(); 1333ccd979bdSMark Fasheh 1334cd861280SRobert P. J. Day osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); 1335ccd979bdSMark Fasheh if (!osb) { 1336ccd979bdSMark Fasheh status = -ENOMEM; 1337ccd979bdSMark Fasheh mlog_errno(status); 1338ccd979bdSMark Fasheh goto bail; 1339ccd979bdSMark Fasheh } 1340ccd979bdSMark Fasheh 1341ccd979bdSMark Fasheh sb->s_fs_info = osb; 1342ccd979bdSMark Fasheh sb->s_op = &ocfs2_sops; 1343ccd979bdSMark Fasheh sb->s_export_op = &ocfs2_export_ops; 1344e0dceaf0SMark Fasheh sb->s_time_gran = 1; 1345ccd979bdSMark Fasheh sb->s_flags |= MS_NOATIME; 1346ccd979bdSMark Fasheh /* this is needed to support O_LARGEFILE */ 13475a254031SMark Fasheh cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); 13485a254031SMark Fasheh bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); 13495a254031SMark Fasheh sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); 1350ccd979bdSMark Fasheh 1351ccd979bdSMark Fasheh osb->sb = sb; 1352ccd979bdSMark Fasheh /* Save off for ocfs2_rw_direct */ 1353ccd979bdSMark Fasheh osb->s_sectsize_bits = blksize_bits(sector_size); 1354ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb->s_sectsize_bits); 1355ccd979bdSMark Fasheh 135634d024f8SMark Fasheh spin_lock_init(&osb->dc_task_lock); 135734d024f8SMark Fasheh init_waitqueue_head(&osb->dc_event); 135834d024f8SMark Fasheh osb->dc_work_sequence = 0; 135934d024f8SMark Fasheh osb->dc_wake_sequence = 0; 1360ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->blocked_lock_list); 1361ccd979bdSMark Fasheh osb->blocked_lock_count = 0; 1362ccd979bdSMark Fasheh spin_lock_init(&osb->osb_lock); 1363ccd979bdSMark Fasheh 1364ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.moves, 0); 1365ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.local_data, 0); 1366ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bitmap_data, 0); 1367ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_allocs, 0); 1368ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_extends, 0); 1369ccd979bdSMark Fasheh 1370ccd979bdSMark Fasheh ocfs2_init_node_maps(osb); 1371ccd979bdSMark Fasheh 1372ccd979bdSMark Fasheh snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", 1373ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1374ccd979bdSMark Fasheh 1375553abd04SJoel Becker status = ocfs2_recovery_init(osb); 1376553abd04SJoel Becker if (status) { 1377553abd04SJoel Becker mlog(ML_ERROR, "Unable to initialize recovery state\n"); 1378553abd04SJoel Becker mlog_errno(status); 1379553abd04SJoel Becker goto bail; 1380553abd04SJoel Becker } 1381ccd979bdSMark Fasheh 1382ccd979bdSMark Fasheh init_waitqueue_head(&osb->checkpoint_event); 1383ccd979bdSMark Fasheh atomic_set(&osb->needs_checkpoint, 0); 1384ccd979bdSMark Fasheh 13857f1a37e3STiger Yang osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; 13867f1a37e3STiger Yang 1387ccd979bdSMark Fasheh osb->node_num = O2NM_INVALID_NODE_NUM; 1388ccd979bdSMark Fasheh osb->slot_num = OCFS2_INVALID_SLOT; 1389ccd979bdSMark Fasheh 1390ccd979bdSMark Fasheh osb->local_alloc_state = OCFS2_LA_UNUSED; 1391ccd979bdSMark Fasheh osb->local_alloc_bh = NULL; 1392ccd979bdSMark Fasheh 1393ccd979bdSMark Fasheh init_waitqueue_head(&osb->osb_mount_event); 1394ccd979bdSMark Fasheh 1395ccd979bdSMark Fasheh osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); 1396ccd979bdSMark Fasheh if (!osb->vol_label) { 1397ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc vol label\n"); 1398ccd979bdSMark Fasheh status = -ENOMEM; 1399ccd979bdSMark Fasheh goto bail; 1400ccd979bdSMark Fasheh } 1401ccd979bdSMark Fasheh 1402ccd979bdSMark Fasheh osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); 1403ccd979bdSMark Fasheh if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { 1404ccd979bdSMark Fasheh mlog(ML_ERROR, "Invalid number of node slots (%u)\n", 1405ccd979bdSMark Fasheh osb->max_slots); 1406ccd979bdSMark Fasheh status = -EINVAL; 1407ccd979bdSMark Fasheh goto bail; 1408ccd979bdSMark Fasheh } 1409781ee3e2SSunil Mushran mlog(0, "max_slots for this device: %u\n", osb->max_slots); 1410ccd979bdSMark Fasheh 1411b4df6ed8SMark Fasheh init_waitqueue_head(&osb->osb_wipe_event); 1412b4df6ed8SMark Fasheh osb->osb_orphan_wipes = kcalloc(osb->max_slots, 1413b4df6ed8SMark Fasheh sizeof(*osb->osb_orphan_wipes), 1414b4df6ed8SMark Fasheh GFP_KERNEL); 1415b4df6ed8SMark Fasheh if (!osb->osb_orphan_wipes) { 1416b4df6ed8SMark Fasheh status = -ENOMEM; 1417b4df6ed8SMark Fasheh mlog_errno(status); 1418b4df6ed8SMark Fasheh goto bail; 1419b4df6ed8SMark Fasheh } 1420b4df6ed8SMark Fasheh 1421ccd979bdSMark Fasheh osb->s_feature_compat = 1422ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); 1423ccd979bdSMark Fasheh osb->s_feature_ro_compat = 1424ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); 1425ccd979bdSMark Fasheh osb->s_feature_incompat = 1426ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); 1427ccd979bdSMark Fasheh 1428ccd979bdSMark Fasheh if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { 1429ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount because of unsupported " 1430ccd979bdSMark Fasheh "optional features (%x).\n", i); 1431ccd979bdSMark Fasheh status = -EINVAL; 1432ccd979bdSMark Fasheh goto bail; 1433ccd979bdSMark Fasheh } 1434ccd979bdSMark Fasheh if (!(osb->sb->s_flags & MS_RDONLY) && 1435ccd979bdSMark Fasheh (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { 1436ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount RDWR because of " 1437ccd979bdSMark Fasheh "unsupported optional features (%x).\n", i); 1438ccd979bdSMark Fasheh status = -EINVAL; 1439ccd979bdSMark Fasheh goto bail; 1440ccd979bdSMark Fasheh } 1441ccd979bdSMark Fasheh 1442ccd979bdSMark Fasheh get_random_bytes(&osb->s_next_generation, sizeof(u32)); 1443ccd979bdSMark Fasheh 1444ccd979bdSMark Fasheh /* FIXME 1445ccd979bdSMark Fasheh * This should be done in ocfs2_journal_init(), but unknown 1446ccd979bdSMark Fasheh * ordering issues will cause the filesystem to crash. 1447ccd979bdSMark Fasheh * If anyone wants to figure out what part of the code 1448ccd979bdSMark Fasheh * refers to osb->journal before ocfs2_journal_init() is run, 1449ccd979bdSMark Fasheh * be my guest. 1450ccd979bdSMark Fasheh */ 1451ccd979bdSMark Fasheh /* initialize our journal structure */ 1452ccd979bdSMark Fasheh 1453cd861280SRobert P. J. Day journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); 1454ccd979bdSMark Fasheh if (!journal) { 1455ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc journal\n"); 1456ccd979bdSMark Fasheh status = -ENOMEM; 1457ccd979bdSMark Fasheh goto bail; 1458ccd979bdSMark Fasheh } 1459ccd979bdSMark Fasheh osb->journal = journal; 1460ccd979bdSMark Fasheh journal->j_osb = osb; 1461ccd979bdSMark Fasheh 1462ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 1463ccd979bdSMark Fasheh init_rwsem(&journal->j_trans_barrier); 1464ccd979bdSMark Fasheh init_waitqueue_head(&journal->j_checkpointed); 1465ccd979bdSMark Fasheh spin_lock_init(&journal->j_lock); 1466ccd979bdSMark Fasheh journal->j_trans_id = (unsigned long) 1; 1467ccd979bdSMark Fasheh INIT_LIST_HEAD(&journal->j_la_cleanups); 1468c4028958SDavid Howells INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); 1469ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 1470ccd979bdSMark Fasheh 1471ccd979bdSMark Fasheh /* get some pseudo constants for clustersize bits */ 1472ccd979bdSMark Fasheh osb->s_clustersize_bits = 1473ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits); 1474ccd979bdSMark Fasheh osb->s_clustersize = 1 << osb->s_clustersize_bits; 1475ccd979bdSMark Fasheh mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); 1476ccd979bdSMark Fasheh 1477ccd979bdSMark Fasheh if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || 1478ccd979bdSMark Fasheh osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { 1479ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", 1480ccd979bdSMark Fasheh osb->s_clustersize); 1481ccd979bdSMark Fasheh status = -EINVAL; 1482ccd979bdSMark Fasheh goto bail; 1483ccd979bdSMark Fasheh } 1484ccd979bdSMark Fasheh 1485ccd979bdSMark Fasheh if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) 1486ccd979bdSMark Fasheh > (u32)~0UL) { 1487ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume might try to write to blocks beyond " 1488ccd979bdSMark Fasheh "what jbd can address in 32 bits.\n"); 1489ccd979bdSMark Fasheh status = -EINVAL; 1490ccd979bdSMark Fasheh goto bail; 1491ccd979bdSMark Fasheh } 1492ccd979bdSMark Fasheh 1493ccd979bdSMark Fasheh if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, 1494ccd979bdSMark Fasheh sizeof(di->id2.i_super.s_uuid))) { 1495ccd979bdSMark Fasheh mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); 1496ccd979bdSMark Fasheh status = -ENOMEM; 1497ccd979bdSMark Fasheh goto bail; 1498ccd979bdSMark Fasheh } 1499ccd979bdSMark Fasheh 150078427043SMark Fasheh memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); 1501ccd979bdSMark Fasheh 1502ccd979bdSMark Fasheh strncpy(osb->vol_label, di->id2.i_super.s_label, 63); 1503ccd979bdSMark Fasheh osb->vol_label[63] = '\0'; 1504ccd979bdSMark Fasheh osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); 1505ccd979bdSMark Fasheh osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); 1506ccd979bdSMark Fasheh osb->first_cluster_group_blkno = 1507ccd979bdSMark Fasheh le64_to_cpu(di->id2.i_super.s_first_cluster_group); 1508ccd979bdSMark Fasheh osb->fs_generation = le32_to_cpu(di->i_fs_generation); 1509ccd979bdSMark Fasheh mlog(0, "vol_label: %s\n", osb->vol_label); 1510ccd979bdSMark Fasheh mlog(0, "uuid: %s\n", osb->uuid_str); 1511b0697053SMark Fasheh mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", 1512b0697053SMark Fasheh (unsigned long long)osb->root_blkno, 1513b0697053SMark Fasheh (unsigned long long)osb->system_dir_blkno); 1514ccd979bdSMark Fasheh 1515ccd979bdSMark Fasheh osb->osb_dlm_debug = ocfs2_new_dlm_debug(); 1516ccd979bdSMark Fasheh if (!osb->osb_dlm_debug) { 1517ccd979bdSMark Fasheh status = -ENOMEM; 1518ccd979bdSMark Fasheh mlog_errno(status); 1519ccd979bdSMark Fasheh goto bail; 1520ccd979bdSMark Fasheh } 1521ccd979bdSMark Fasheh 1522ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_INIT); 1523ccd979bdSMark Fasheh 1524ccd979bdSMark Fasheh /* load root, system_dir, and all global system inodes */ 1525ccd979bdSMark Fasheh status = ocfs2_init_global_system_inodes(osb); 1526ccd979bdSMark Fasheh if (status < 0) { 1527ccd979bdSMark Fasheh mlog_errno(status); 1528ccd979bdSMark Fasheh goto bail; 1529ccd979bdSMark Fasheh } 1530ccd979bdSMark Fasheh 1531ccd979bdSMark Fasheh /* 1532ccd979bdSMark Fasheh * global bitmap 1533ccd979bdSMark Fasheh */ 1534ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, 1535ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1536ccd979bdSMark Fasheh if (!inode) { 1537ccd979bdSMark Fasheh status = -EINVAL; 1538ccd979bdSMark Fasheh mlog_errno(status); 1539ccd979bdSMark Fasheh goto bail; 1540ccd979bdSMark Fasheh } 1541ccd979bdSMark Fasheh 1542ccd979bdSMark Fasheh osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; 1543ccd979bdSMark Fasheh iput(inode); 1544ccd979bdSMark Fasheh 1545e9d578a8STao Ma osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; 1546ccd979bdSMark Fasheh 1547ccd979bdSMark Fasheh status = ocfs2_init_slot_info(osb); 1548ccd979bdSMark Fasheh if (status < 0) { 1549ccd979bdSMark Fasheh mlog_errno(status); 1550ccd979bdSMark Fasheh goto bail; 1551ccd979bdSMark Fasheh } 1552ccd979bdSMark Fasheh 1553ccd979bdSMark Fasheh bail: 1554ccd979bdSMark Fasheh mlog_exit(status); 1555ccd979bdSMark Fasheh return status; 1556ccd979bdSMark Fasheh } 1557ccd979bdSMark Fasheh 1558ccd979bdSMark Fasheh /* 1559ccd979bdSMark Fasheh * will return: -EAGAIN if it is ok to keep searching for superblocks 1560ccd979bdSMark Fasheh * -EINVAL if there is a bad superblock 1561ccd979bdSMark Fasheh * 0 on success 1562ccd979bdSMark Fasheh */ 1563ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 1564ccd979bdSMark Fasheh struct buffer_head *bh, 1565ccd979bdSMark Fasheh u32 blksz) 1566ccd979bdSMark Fasheh { 1567ccd979bdSMark Fasheh int status = -EAGAIN; 1568ccd979bdSMark Fasheh 1569ccd979bdSMark Fasheh mlog_entry_void(); 1570ccd979bdSMark Fasheh 1571ccd979bdSMark Fasheh if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, 1572ccd979bdSMark Fasheh strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { 1573ccd979bdSMark Fasheh status = -EINVAL; 1574ccd979bdSMark Fasheh if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { 1575ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with incorrect block " 1576ccd979bdSMark Fasheh "size: found %u, should be %u\n", 1577ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), 1578ccd979bdSMark Fasheh blksz); 1579ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != 1580ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL || 1581ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level) != 1582ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL) { 1583ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with bad version: " 1584ccd979bdSMark Fasheh "found %u.%u, should be %u.%u\n", 1585ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_major_rev_level), 1586ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level), 1587ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL, 1588ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL); 1589ccd979bdSMark Fasheh } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { 1590ccd979bdSMark Fasheh mlog(ML_ERROR, "bad block number on superblock: " 1591b0697053SMark Fasheh "found %llu, should be %llu\n", 15921ca1a111SMark Fasheh (unsigned long long)le64_to_cpu(di->i_blkno), 1593b0697053SMark Fasheh (unsigned long long)bh->b_blocknr); 1594ccd979bdSMark Fasheh } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || 1595ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { 1596ccd979bdSMark Fasheh mlog(ML_ERROR, "bad cluster size found: %u\n", 1597ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); 1598ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { 1599ccd979bdSMark Fasheh mlog(ML_ERROR, "bad root_blkno: 0\n"); 1600ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { 1601ccd979bdSMark Fasheh mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); 1602ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { 1603ccd979bdSMark Fasheh mlog(ML_ERROR, 1604ccd979bdSMark Fasheh "Superblock slots found greater than file system " 1605ccd979bdSMark Fasheh "maximum: found %u, max %u\n", 1606ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_max_slots), 1607ccd979bdSMark Fasheh OCFS2_MAX_SLOTS); 1608ccd979bdSMark Fasheh } else { 1609ccd979bdSMark Fasheh /* found it! */ 1610ccd979bdSMark Fasheh status = 0; 1611ccd979bdSMark Fasheh } 1612ccd979bdSMark Fasheh } 1613ccd979bdSMark Fasheh 1614ccd979bdSMark Fasheh mlog_exit(status); 1615ccd979bdSMark Fasheh return status; 1616ccd979bdSMark Fasheh } 1617ccd979bdSMark Fasheh 1618ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb) 1619ccd979bdSMark Fasheh { 1620bddb8eb3SDenis Cheng int status; 1621ccd979bdSMark Fasheh int dirty; 1622c271c5c2SSunil Mushran int local; 1623ccd979bdSMark Fasheh struct ocfs2_dinode *local_alloc = NULL; /* only used if we 1624ccd979bdSMark Fasheh * recover 1625ccd979bdSMark Fasheh * ourselves. */ 1626ccd979bdSMark Fasheh 1627ccd979bdSMark Fasheh mlog_entry_void(); 1628ccd979bdSMark Fasheh 1629ccd979bdSMark Fasheh /* Init our journal object. */ 1630ccd979bdSMark Fasheh status = ocfs2_journal_init(osb->journal, &dirty); 1631ccd979bdSMark Fasheh if (status < 0) { 1632ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not initialize journal!\n"); 1633ccd979bdSMark Fasheh goto finally; 1634ccd979bdSMark Fasheh } 1635ccd979bdSMark Fasheh 1636ccd979bdSMark Fasheh /* If the journal was unmounted cleanly then we don't want to 1637ccd979bdSMark Fasheh * recover anything. Otherwise, journal_load will do that 1638ccd979bdSMark Fasheh * dirty work for us :) */ 1639ccd979bdSMark Fasheh if (!dirty) { 1640ccd979bdSMark Fasheh status = ocfs2_journal_wipe(osb->journal, 0); 1641ccd979bdSMark Fasheh if (status < 0) { 1642ccd979bdSMark Fasheh mlog_errno(status); 1643ccd979bdSMark Fasheh goto finally; 1644ccd979bdSMark Fasheh } 1645ccd979bdSMark Fasheh } else { 1646ccd979bdSMark Fasheh mlog(ML_NOTICE, "File system was not unmounted cleanly, " 1647ccd979bdSMark Fasheh "recovering volume.\n"); 1648ccd979bdSMark Fasheh } 1649ccd979bdSMark Fasheh 1650c271c5c2SSunil Mushran local = ocfs2_mount_local(osb); 1651c271c5c2SSunil Mushran 1652ccd979bdSMark Fasheh /* will play back anything left in the journal. */ 1653c271c5c2SSunil Mushran ocfs2_journal_load(osb->journal, local); 1654ccd979bdSMark Fasheh 1655ccd979bdSMark Fasheh if (dirty) { 1656ccd979bdSMark Fasheh /* recover my local alloc if we didn't unmount cleanly. */ 1657ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, 1658ccd979bdSMark Fasheh osb->slot_num, 1659ccd979bdSMark Fasheh &local_alloc); 1660ccd979bdSMark Fasheh if (status < 0) { 1661ccd979bdSMark Fasheh mlog_errno(status); 1662ccd979bdSMark Fasheh goto finally; 1663ccd979bdSMark Fasheh } 1664ccd979bdSMark Fasheh /* we complete the recovery process after we've marked 1665ccd979bdSMark Fasheh * ourselves as mounted. */ 1666ccd979bdSMark Fasheh } 1667ccd979bdSMark Fasheh 1668ccd979bdSMark Fasheh mlog(0, "Journal loaded.\n"); 1669ccd979bdSMark Fasheh 1670ccd979bdSMark Fasheh status = ocfs2_load_local_alloc(osb); 1671ccd979bdSMark Fasheh if (status < 0) { 1672ccd979bdSMark Fasheh mlog_errno(status); 1673ccd979bdSMark Fasheh goto finally; 1674ccd979bdSMark Fasheh } 1675ccd979bdSMark Fasheh 1676ccd979bdSMark Fasheh if (dirty) { 1677ccd979bdSMark Fasheh /* Recovery will be completed after we've mounted the 1678ccd979bdSMark Fasheh * rest of the volume. */ 1679ccd979bdSMark Fasheh osb->dirty = 1; 1680ccd979bdSMark Fasheh osb->local_alloc_copy = local_alloc; 1681ccd979bdSMark Fasheh local_alloc = NULL; 1682ccd979bdSMark Fasheh } 1683ccd979bdSMark Fasheh 1684ccd979bdSMark Fasheh /* go through each journal, trylock it and if you get the 1685ccd979bdSMark Fasheh * lock, and it's marked as dirty, set the bit in the recover 1686ccd979bdSMark Fasheh * map and launch a recovery thread for it. */ 1687ccd979bdSMark Fasheh status = ocfs2_mark_dead_nodes(osb); 1688ccd979bdSMark Fasheh if (status < 0) 1689ccd979bdSMark Fasheh mlog_errno(status); 1690ccd979bdSMark Fasheh 1691ccd979bdSMark Fasheh finally: 1692ccd979bdSMark Fasheh if (local_alloc) 1693ccd979bdSMark Fasheh kfree(local_alloc); 1694ccd979bdSMark Fasheh 1695ccd979bdSMark Fasheh mlog_exit(status); 1696ccd979bdSMark Fasheh return status; 1697ccd979bdSMark Fasheh } 1698ccd979bdSMark Fasheh 1699ccd979bdSMark Fasheh /* 1700ccd979bdSMark Fasheh * The routine gets called from dismount or close whenever a dismount on 1701ccd979bdSMark Fasheh * volume is requested and the osb open count becomes 1. 1702ccd979bdSMark Fasheh * It will remove the osb from the global list and also free up all the 1703ccd979bdSMark Fasheh * initialized resources and fileobject. 1704ccd979bdSMark Fasheh */ 1705ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb) 1706ccd979bdSMark Fasheh { 1707ccd979bdSMark Fasheh mlog_entry_void(); 1708ccd979bdSMark Fasheh 1709ccd979bdSMark Fasheh /* This function assumes that the caller has the main osb resource */ 1710ccd979bdSMark Fasheh 17118e8a4603SMark Fasheh ocfs2_free_slot_info(osb); 1712ccd979bdSMark Fasheh 1713b4df6ed8SMark Fasheh kfree(osb->osb_orphan_wipes); 1714ccd979bdSMark Fasheh /* FIXME 1715ccd979bdSMark Fasheh * This belongs in journal shutdown, but because we have to 1716ccd979bdSMark Fasheh * allocate osb->journal at the start of ocfs2_initalize_osb(), 1717ccd979bdSMark Fasheh * we free it here. 1718ccd979bdSMark Fasheh */ 1719ccd979bdSMark Fasheh kfree(osb->journal); 1720ccd979bdSMark Fasheh if (osb->local_alloc_copy) 1721ccd979bdSMark Fasheh kfree(osb->local_alloc_copy); 1722ccd979bdSMark Fasheh kfree(osb->uuid_str); 1723ccd979bdSMark Fasheh ocfs2_put_dlm_debug(osb->osb_dlm_debug); 1724ccd979bdSMark Fasheh memset(osb, 0, sizeof(struct ocfs2_super)); 1725ccd979bdSMark Fasheh 1726ccd979bdSMark Fasheh mlog_exit_void(); 1727ccd979bdSMark Fasheh } 1728ccd979bdSMark Fasheh 1729ccd979bdSMark Fasheh /* Put OCFS2 into a readonly state, or (if the user specifies it), 1730ccd979bdSMark Fasheh * panic(). We do not support continue-on-error operation. */ 1731ccd979bdSMark Fasheh static void ocfs2_handle_error(struct super_block *sb) 1732ccd979bdSMark Fasheh { 1733ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1734ccd979bdSMark Fasheh 1735ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) 1736ccd979bdSMark Fasheh panic("OCFS2: (device %s): panic forced after error\n", 1737ccd979bdSMark Fasheh sb->s_id); 1738ccd979bdSMark Fasheh 1739ccd979bdSMark Fasheh ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); 1740ccd979bdSMark Fasheh 1741ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY && 1742ccd979bdSMark Fasheh (ocfs2_is_soft_readonly(osb) || 1743ccd979bdSMark Fasheh ocfs2_is_hard_readonly(osb))) 1744ccd979bdSMark Fasheh return; 1745ccd979bdSMark Fasheh 1746ccd979bdSMark Fasheh printk(KERN_CRIT "File system is now read-only due to the potential " 1747ccd979bdSMark Fasheh "of on-disk corruption. Please run fsck.ocfs2 once the file " 1748ccd979bdSMark Fasheh "system is unmounted.\n"); 1749ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 1750ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 1751ccd979bdSMark Fasheh } 1752ccd979bdSMark Fasheh 1753ccd979bdSMark Fasheh static char error_buf[1024]; 1754ccd979bdSMark Fasheh 1755ccd979bdSMark Fasheh void __ocfs2_error(struct super_block *sb, 1756ccd979bdSMark Fasheh const char *function, 1757ccd979bdSMark Fasheh const char *fmt, ...) 1758ccd979bdSMark Fasheh { 1759ccd979bdSMark Fasheh va_list args; 1760ccd979bdSMark Fasheh 1761ccd979bdSMark Fasheh va_start(args, fmt); 17624a6e617aSAlexey Dobriyan vsnprintf(error_buf, sizeof(error_buf), fmt, args); 1763ccd979bdSMark Fasheh va_end(args); 1764ccd979bdSMark Fasheh 1765ccd979bdSMark Fasheh /* Not using mlog here because we want to show the actual 1766ccd979bdSMark Fasheh * function the error came from. */ 1767ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", 1768ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1769ccd979bdSMark Fasheh 1770ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1771ccd979bdSMark Fasheh } 1772ccd979bdSMark Fasheh 1773ccd979bdSMark Fasheh /* Handle critical errors. This is intentionally more drastic than 1774ccd979bdSMark Fasheh * ocfs2_handle_error, so we only use for things like journal errors, 1775ccd979bdSMark Fasheh * etc. */ 1776ccd979bdSMark Fasheh void __ocfs2_abort(struct super_block* sb, 1777ccd979bdSMark Fasheh const char *function, 1778ccd979bdSMark Fasheh const char *fmt, ...) 1779ccd979bdSMark Fasheh { 1780ccd979bdSMark Fasheh va_list args; 1781ccd979bdSMark Fasheh 1782ccd979bdSMark Fasheh va_start(args, fmt); 17834a6e617aSAlexey Dobriyan vsnprintf(error_buf, sizeof(error_buf), fmt, args); 1784ccd979bdSMark Fasheh va_end(args); 1785ccd979bdSMark Fasheh 1786ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", 1787ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1788ccd979bdSMark Fasheh 1789ccd979bdSMark Fasheh /* We don't have the cluster support yet to go straight to 1790ccd979bdSMark Fasheh * hard readonly in here. Until then, we want to keep 1791ccd979bdSMark Fasheh * ocfs2_abort() so that we can at least mark critical 1792ccd979bdSMark Fasheh * errors. 1793ccd979bdSMark Fasheh * 1794ccd979bdSMark Fasheh * TODO: This should abort the journal and alert other nodes 1795ccd979bdSMark Fasheh * that our slot needs recovery. */ 1796ccd979bdSMark Fasheh 1797ccd979bdSMark Fasheh /* Force a panic(). This stinks, but it's better than letting 1798ccd979bdSMark Fasheh * things continue without having a proper hard readonly 1799ccd979bdSMark Fasheh * here. */ 1800ccd979bdSMark Fasheh OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 1801ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1802ccd979bdSMark Fasheh } 1803ccd979bdSMark Fasheh 1804ccd979bdSMark Fasheh module_init(ocfs2_init); 1805ccd979bdSMark Fasheh module_exit(ocfs2_exit); 1806