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; 90c0123adeSTiger Yang }; 91c0123adeSTiger Yang 92ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, char *options, 93c0123adeSTiger Yang struct mount_options *mopt, 94baf4661aSSunil Mushran int is_remount); 95d550071cSSunil Mushran static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); 96ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb); 97ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb); 98ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data); 99ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); 100ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void); 101ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void); 102ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb); 103ccd979bdSMark Fasheh 104726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); 105ccd979bdSMark Fasheh 106ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait); 107ccd979bdSMark Fasheh 108ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); 109ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); 110bddb8eb3SDenis Cheng static void ocfs2_release_system_inodes(struct ocfs2_super *osb); 111ccd979bdSMark Fasheh static int ocfs2_fill_local_node_info(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, 156ccd979bdSMark Fasheh Opt_err, 157ccd979bdSMark Fasheh }; 158ccd979bdSMark Fasheh 159ccd979bdSMark Fasheh static match_table_t tokens = { 160ccd979bdSMark Fasheh {Opt_barrier, "barrier=%u"}, 161ccd979bdSMark Fasheh {Opt_err_panic, "errors=panic"}, 162ccd979bdSMark Fasheh {Opt_err_ro, "errors=remount-ro"}, 163ccd979bdSMark Fasheh {Opt_intr, "intr"}, 164ccd979bdSMark Fasheh {Opt_nointr, "nointr"}, 165ccd979bdSMark Fasheh {Opt_hb_none, OCFS2_HB_NONE}, 166ccd979bdSMark Fasheh {Opt_hb_local, OCFS2_HB_LOCAL}, 167ccd979bdSMark Fasheh {Opt_data_ordered, "data=ordered"}, 168ccd979bdSMark Fasheh {Opt_data_writeback, "data=writeback"}, 1697f1a37e3STiger Yang {Opt_atime_quantum, "atime_quantum=%u"}, 170baf4661aSSunil Mushran {Opt_slot, "preferred_slot=%u"}, 171d147b3d6SMark Fasheh {Opt_commit, "commit=%u"}, 1722fbe8d1eSSunil Mushran {Opt_localalloc, "localalloc=%d"}, 17353fc622bSMark Fasheh {Opt_localflocks, "localflocks"}, 174ccd979bdSMark Fasheh {Opt_err, NULL} 175ccd979bdSMark Fasheh }; 176ccd979bdSMark Fasheh 177ccd979bdSMark Fasheh /* 178ccd979bdSMark Fasheh * write_super and sync_fs ripped right out of ext3. 179ccd979bdSMark Fasheh */ 180ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb) 181ccd979bdSMark Fasheh { 1827892f2f4SIngo Molnar if (mutex_trylock(&sb->s_lock) != 0) 183ccd979bdSMark Fasheh BUG(); 184ccd979bdSMark Fasheh sb->s_dirt = 0; 185ccd979bdSMark Fasheh } 186ccd979bdSMark Fasheh 187ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait) 188ccd979bdSMark Fasheh { 189bddb8eb3SDenis Cheng int status; 190ccd979bdSMark Fasheh tid_t target; 191ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 192ccd979bdSMark Fasheh 193ccd979bdSMark Fasheh sb->s_dirt = 0; 194ccd979bdSMark Fasheh 195ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 196ccd979bdSMark Fasheh return -EROFS; 197ccd979bdSMark Fasheh 198ccd979bdSMark Fasheh if (wait) { 199ccd979bdSMark Fasheh status = ocfs2_flush_truncate_log(osb); 200ccd979bdSMark Fasheh if (status < 0) 201ccd979bdSMark Fasheh mlog_errno(status); 202ccd979bdSMark Fasheh } else { 203ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 204ccd979bdSMark Fasheh } 205ccd979bdSMark Fasheh 206ccd979bdSMark Fasheh if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { 207ccd979bdSMark Fasheh if (wait) 208ccd979bdSMark Fasheh log_wait_commit(OCFS2_SB(sb)->journal->j_journal, 209ccd979bdSMark Fasheh target); 210ccd979bdSMark Fasheh } 211ccd979bdSMark Fasheh return 0; 212ccd979bdSMark Fasheh } 213ccd979bdSMark Fasheh 214ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) 215ccd979bdSMark Fasheh { 216ccd979bdSMark Fasheh struct inode *new = NULL; 217ccd979bdSMark Fasheh int status = 0; 218ccd979bdSMark Fasheh int i; 219ccd979bdSMark Fasheh 220ccd979bdSMark Fasheh mlog_entry_void(); 221ccd979bdSMark Fasheh 2225fa0613eSJan Kara new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); 223ccd979bdSMark Fasheh if (IS_ERR(new)) { 224ccd979bdSMark Fasheh status = PTR_ERR(new); 225ccd979bdSMark Fasheh mlog_errno(status); 226ccd979bdSMark Fasheh goto bail; 227ccd979bdSMark Fasheh } 228ccd979bdSMark Fasheh osb->root_inode = new; 229ccd979bdSMark Fasheh 2305fa0613eSJan Kara new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); 231ccd979bdSMark Fasheh if (IS_ERR(new)) { 232ccd979bdSMark Fasheh status = PTR_ERR(new); 233ccd979bdSMark Fasheh mlog_errno(status); 234ccd979bdSMark Fasheh goto bail; 235ccd979bdSMark Fasheh } 236ccd979bdSMark Fasheh osb->sys_root_inode = new; 237ccd979bdSMark Fasheh 238ccd979bdSMark Fasheh for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; 239ccd979bdSMark Fasheh i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { 240ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 241ccd979bdSMark Fasheh if (!new) { 242ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 243ccd979bdSMark Fasheh status = -EINVAL; 244ccd979bdSMark Fasheh mlog_errno(status); 245ccd979bdSMark Fasheh /* FIXME: Should ERROR_RO_FS */ 246ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to load system inode %d, " 247ccd979bdSMark Fasheh "possibly corrupt fs?", i); 248ccd979bdSMark Fasheh goto bail; 249ccd979bdSMark Fasheh } 250ccd979bdSMark Fasheh // the array now has one ref, so drop this one 251ccd979bdSMark Fasheh iput(new); 252ccd979bdSMark Fasheh } 253ccd979bdSMark Fasheh 254ccd979bdSMark Fasheh bail: 255ccd979bdSMark Fasheh mlog_exit(status); 256ccd979bdSMark Fasheh return status; 257ccd979bdSMark Fasheh } 258ccd979bdSMark Fasheh 259ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) 260ccd979bdSMark Fasheh { 261ccd979bdSMark Fasheh struct inode *new = NULL; 262ccd979bdSMark Fasheh int status = 0; 263ccd979bdSMark Fasheh int i; 264ccd979bdSMark Fasheh 265ccd979bdSMark Fasheh mlog_entry_void(); 266ccd979bdSMark Fasheh 267ccd979bdSMark Fasheh for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; 268ccd979bdSMark Fasheh i < NUM_SYSTEM_INODES; 269ccd979bdSMark Fasheh i++) { 270ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 271ccd979bdSMark Fasheh if (!new) { 272ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 273ccd979bdSMark Fasheh status = -EINVAL; 274ccd979bdSMark Fasheh mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", 275ccd979bdSMark Fasheh status, i, osb->slot_num); 276ccd979bdSMark Fasheh goto bail; 277ccd979bdSMark Fasheh } 278ccd979bdSMark Fasheh /* the array now has one ref, so drop this one */ 279ccd979bdSMark Fasheh iput(new); 280ccd979bdSMark Fasheh } 281ccd979bdSMark Fasheh 282ccd979bdSMark Fasheh bail: 283ccd979bdSMark Fasheh mlog_exit(status); 284ccd979bdSMark Fasheh return status; 285ccd979bdSMark Fasheh } 286ccd979bdSMark Fasheh 287bddb8eb3SDenis Cheng static void ocfs2_release_system_inodes(struct ocfs2_super *osb) 288ccd979bdSMark Fasheh { 289bddb8eb3SDenis Cheng int i; 290ccd979bdSMark Fasheh struct inode *inode; 291ccd979bdSMark Fasheh 292ccd979bdSMark Fasheh mlog_entry_void(); 293ccd979bdSMark Fasheh 294ccd979bdSMark Fasheh for (i = 0; i < NUM_SYSTEM_INODES; i++) { 295ccd979bdSMark Fasheh inode = osb->system_inodes[i]; 296ccd979bdSMark Fasheh if (inode) { 297ccd979bdSMark Fasheh iput(inode); 298ccd979bdSMark Fasheh osb->system_inodes[i] = NULL; 299ccd979bdSMark Fasheh } 300ccd979bdSMark Fasheh } 301ccd979bdSMark Fasheh 302ccd979bdSMark Fasheh inode = osb->sys_root_inode; 303ccd979bdSMark Fasheh if (inode) { 304ccd979bdSMark Fasheh iput(inode); 305ccd979bdSMark Fasheh osb->sys_root_inode = NULL; 306ccd979bdSMark Fasheh } 307ccd979bdSMark Fasheh 308ccd979bdSMark Fasheh inode = osb->root_inode; 309ccd979bdSMark Fasheh if (inode) { 310ccd979bdSMark Fasheh iput(inode); 311ccd979bdSMark Fasheh osb->root_inode = NULL; 312ccd979bdSMark Fasheh } 313ccd979bdSMark Fasheh 314bddb8eb3SDenis Cheng mlog_exit(0); 315ccd979bdSMark Fasheh } 316ccd979bdSMark Fasheh 317ccd979bdSMark Fasheh /* We're allocating fs objects, use GFP_NOFS */ 318ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb) 319ccd979bdSMark Fasheh { 320ccd979bdSMark Fasheh struct ocfs2_inode_info *oi; 321ccd979bdSMark Fasheh 322e6b4f8daSChristoph Lameter oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); 323ccd979bdSMark Fasheh if (!oi) 324ccd979bdSMark Fasheh return NULL; 325ccd979bdSMark Fasheh 326ccd979bdSMark Fasheh return &oi->vfs_inode; 327ccd979bdSMark Fasheh } 328ccd979bdSMark Fasheh 329ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode) 330ccd979bdSMark Fasheh { 331ccd979bdSMark Fasheh kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); 332ccd979bdSMark Fasheh } 333ccd979bdSMark Fasheh 3345a254031SMark Fasheh static unsigned long long ocfs2_max_file_offset(unsigned int bbits, 3355a254031SMark Fasheh unsigned int cbits) 336ccd979bdSMark Fasheh { 3375a254031SMark Fasheh unsigned int bytes = 1 << cbits; 3385a254031SMark Fasheh unsigned int trim = bytes; 3395a254031SMark Fasheh unsigned int bitshift = 32; 340ccd979bdSMark Fasheh 3415a254031SMark Fasheh /* 3425a254031SMark Fasheh * i_size and all block offsets in ocfs2 are always 64 bits 3435a254031SMark Fasheh * wide. i_clusters is 32 bits, in cluster-sized units. So on 3445a254031SMark Fasheh * 64 bit platforms, cluster size will be the limiting factor. 345ccd979bdSMark Fasheh */ 346ccd979bdSMark Fasheh 347ccd979bdSMark Fasheh #if BITS_PER_LONG == 32 348ccd979bdSMark Fasheh # if defined(CONFIG_LBD) 3492ecd05aeSAlexey Dobriyan BUILD_BUG_ON(sizeof(sector_t) != 8); 3505a254031SMark Fasheh /* 3515a254031SMark Fasheh * We might be limited by page cache size. 3525a254031SMark Fasheh */ 3535a254031SMark Fasheh if (bytes > PAGE_CACHE_SIZE) { 3545a254031SMark Fasheh bytes = PAGE_CACHE_SIZE; 3555a254031SMark Fasheh trim = 1; 3565a254031SMark Fasheh /* 3575a254031SMark Fasheh * Shift by 31 here so that we don't get larger than 3585a254031SMark Fasheh * MAX_LFS_FILESIZE 3595a254031SMark Fasheh */ 3605a254031SMark Fasheh bitshift = 31; 3615a254031SMark Fasheh } 362ccd979bdSMark Fasheh # else 3635a254031SMark Fasheh /* 3645a254031SMark Fasheh * We are limited by the size of sector_t. Use block size, as 3655a254031SMark Fasheh * that's what we expose to the VFS. 3665a254031SMark Fasheh */ 3675a254031SMark Fasheh bytes = 1 << bbits; 3685a254031SMark Fasheh trim = 1; 3695a254031SMark Fasheh bitshift = 31; 370ccd979bdSMark Fasheh # endif 371ccd979bdSMark Fasheh #endif 372ccd979bdSMark Fasheh 3735a254031SMark Fasheh /* 3745a254031SMark Fasheh * Trim by a whole cluster when we can actually approach the 3755a254031SMark Fasheh * on-disk limits. Otherwise we can overflow i_clusters when 3765a254031SMark Fasheh * an extent start is at the max offset. 3775a254031SMark Fasheh */ 3785a254031SMark Fasheh return (((unsigned long long)bytes) << bitshift) - trim; 379ccd979bdSMark Fasheh } 380ccd979bdSMark Fasheh 381ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data) 382ccd979bdSMark Fasheh { 383ccd979bdSMark Fasheh int incompat_features; 384ccd979bdSMark Fasheh int ret = 0; 385c0123adeSTiger Yang struct mount_options parsed_options; 386ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 387ccd979bdSMark Fasheh 388c0123adeSTiger Yang if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { 389ccd979bdSMark Fasheh ret = -EINVAL; 390ccd979bdSMark Fasheh goto out; 391ccd979bdSMark Fasheh } 392ccd979bdSMark Fasheh 393ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != 394c0123adeSTiger Yang (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 395ccd979bdSMark Fasheh ret = -EINVAL; 396ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); 397ccd979bdSMark Fasheh goto out; 398ccd979bdSMark Fasheh } 399ccd979bdSMark Fasheh 400ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != 401c0123adeSTiger Yang (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { 402ccd979bdSMark Fasheh ret = -EINVAL; 403ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change data mode on remount\n"); 404ccd979bdSMark Fasheh goto out; 405ccd979bdSMark Fasheh } 406ccd979bdSMark Fasheh 407ccd979bdSMark Fasheh /* We're going to/from readonly mode. */ 408ccd979bdSMark Fasheh if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { 409ccd979bdSMark Fasheh /* Lock here so the check of HARD_RO and the potential 410ccd979bdSMark Fasheh * setting of SOFT_RO is atomic. */ 411ccd979bdSMark Fasheh spin_lock(&osb->osb_lock); 412ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_HARD_RO) { 413ccd979bdSMark Fasheh mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); 414ccd979bdSMark Fasheh ret = -EROFS; 415ccd979bdSMark Fasheh goto unlock_osb; 416ccd979bdSMark Fasheh } 417ccd979bdSMark Fasheh 418ccd979bdSMark Fasheh if (*flags & MS_RDONLY) { 419ccd979bdSMark Fasheh mlog(0, "Going to ro mode.\n"); 420ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 421ccd979bdSMark Fasheh osb->osb_flags |= OCFS2_OSB_SOFT_RO; 422ccd979bdSMark Fasheh } else { 423ccd979bdSMark Fasheh mlog(0, "Making ro filesystem writeable.\n"); 424ccd979bdSMark Fasheh 425ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { 426ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR " 427ccd979bdSMark Fasheh "filesystem due to previous errors.\n"); 428ccd979bdSMark Fasheh ret = -EROFS; 429ccd979bdSMark Fasheh goto unlock_osb; 430ccd979bdSMark Fasheh } 431ccd979bdSMark Fasheh incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); 432ccd979bdSMark Fasheh if (incompat_features) { 433ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR because " 434ccd979bdSMark Fasheh "of unsupported optional features " 435ccd979bdSMark Fasheh "(%x).\n", incompat_features); 436ccd979bdSMark Fasheh ret = -EINVAL; 437ccd979bdSMark Fasheh goto unlock_osb; 438ccd979bdSMark Fasheh } 439ccd979bdSMark Fasheh sb->s_flags &= ~MS_RDONLY; 440ccd979bdSMark Fasheh osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; 441ccd979bdSMark Fasheh } 442ccd979bdSMark Fasheh unlock_osb: 443ccd979bdSMark Fasheh spin_unlock(&osb->osb_lock); 444ccd979bdSMark Fasheh } 445ccd979bdSMark Fasheh 446ccd979bdSMark Fasheh if (!ret) { 447ccd979bdSMark Fasheh /* Only save off the new mount options in case of a successful 448ccd979bdSMark Fasheh * remount. */ 449c0123adeSTiger Yang osb->s_mount_opt = parsed_options.mount_opt; 450c0123adeSTiger Yang osb->s_atime_quantum = parsed_options.atime_quantum; 451c0123adeSTiger Yang osb->preferred_slot = parsed_options.slot; 452d147b3d6SMark Fasheh if (parsed_options.commit_interval) 453d147b3d6SMark Fasheh osb->osb_commit_interval = parsed_options.commit_interval; 454e001e796SMark Fasheh 455e001e796SMark Fasheh if (!ocfs2_is_hard_readonly(osb)) 456e001e796SMark Fasheh ocfs2_set_journal_params(osb); 457ccd979bdSMark Fasheh } 458ccd979bdSMark Fasheh out: 459ccd979bdSMark Fasheh return ret; 460ccd979bdSMark Fasheh } 461ccd979bdSMark Fasheh 462ccd979bdSMark Fasheh static int ocfs2_sb_probe(struct super_block *sb, 463ccd979bdSMark Fasheh struct buffer_head **bh, 464ccd979bdSMark Fasheh int *sector_size) 465ccd979bdSMark Fasheh { 466bddb8eb3SDenis Cheng int status, tmpstat; 467ccd979bdSMark Fasheh struct ocfs1_vol_disk_hdr *hdr; 468ccd979bdSMark Fasheh struct ocfs2_dinode *di; 469ccd979bdSMark Fasheh int blksize; 470ccd979bdSMark Fasheh 471ccd979bdSMark Fasheh *bh = NULL; 472ccd979bdSMark Fasheh 473ccd979bdSMark Fasheh /* may be > 512 */ 474ccd979bdSMark Fasheh *sector_size = bdev_hardsect_size(sb->s_bdev); 475ccd979bdSMark Fasheh if (*sector_size > OCFS2_MAX_BLOCKSIZE) { 476ccd979bdSMark Fasheh mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", 477ccd979bdSMark Fasheh *sector_size, OCFS2_MAX_BLOCKSIZE); 478ccd979bdSMark Fasheh status = -EINVAL; 479ccd979bdSMark Fasheh goto bail; 480ccd979bdSMark Fasheh } 481ccd979bdSMark Fasheh 482ccd979bdSMark Fasheh /* Can this really happen? */ 483ccd979bdSMark Fasheh if (*sector_size < OCFS2_MIN_BLOCKSIZE) 484ccd979bdSMark Fasheh *sector_size = OCFS2_MIN_BLOCKSIZE; 485ccd979bdSMark Fasheh 486ccd979bdSMark Fasheh /* check block zero for old format */ 487ccd979bdSMark Fasheh status = ocfs2_get_sector(sb, bh, 0, *sector_size); 488ccd979bdSMark Fasheh if (status < 0) { 489ccd979bdSMark Fasheh mlog_errno(status); 490ccd979bdSMark Fasheh goto bail; 491ccd979bdSMark Fasheh } 492ccd979bdSMark Fasheh hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; 493ccd979bdSMark Fasheh if (hdr->major_version == OCFS1_MAJOR_VERSION) { 494ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible version: %u.%u\n", 495ccd979bdSMark Fasheh hdr->major_version, hdr->minor_version); 496ccd979bdSMark Fasheh status = -EINVAL; 497ccd979bdSMark Fasheh } 498ccd979bdSMark Fasheh if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, 499ccd979bdSMark Fasheh strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { 500ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible volume signature: %8s\n", 501ccd979bdSMark Fasheh hdr->signature); 502ccd979bdSMark Fasheh status = -EINVAL; 503ccd979bdSMark Fasheh } 504ccd979bdSMark Fasheh brelse(*bh); 505ccd979bdSMark Fasheh *bh = NULL; 506ccd979bdSMark Fasheh if (status < 0) { 507ccd979bdSMark Fasheh mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " 508ccd979bdSMark Fasheh "upgraded before mounting with ocfs v2\n"); 509ccd979bdSMark Fasheh goto bail; 510ccd979bdSMark Fasheh } 511ccd979bdSMark Fasheh 512ccd979bdSMark Fasheh /* 513ccd979bdSMark Fasheh * Now check at magic offset for 512, 1024, 2048, 4096 514ccd979bdSMark Fasheh * blocksizes. 4096 is the maximum blocksize because it is 515ccd979bdSMark Fasheh * the minimum clustersize. 516ccd979bdSMark Fasheh */ 517ccd979bdSMark Fasheh status = -EINVAL; 518ccd979bdSMark Fasheh for (blksize = *sector_size; 519ccd979bdSMark Fasheh blksize <= OCFS2_MAX_BLOCKSIZE; 520ccd979bdSMark Fasheh blksize <<= 1) { 521ccd979bdSMark Fasheh tmpstat = ocfs2_get_sector(sb, bh, 522ccd979bdSMark Fasheh OCFS2_SUPER_BLOCK_BLKNO, 523ccd979bdSMark Fasheh blksize); 524ccd979bdSMark Fasheh if (tmpstat < 0) { 525ccd979bdSMark Fasheh status = tmpstat; 526ccd979bdSMark Fasheh mlog_errno(status); 527ccd979bdSMark Fasheh goto bail; 528ccd979bdSMark Fasheh } 529ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) (*bh)->b_data; 530ccd979bdSMark Fasheh status = ocfs2_verify_volume(di, *bh, blksize); 531ccd979bdSMark Fasheh if (status >= 0) 532ccd979bdSMark Fasheh goto bail; 533ccd979bdSMark Fasheh brelse(*bh); 534ccd979bdSMark Fasheh *bh = NULL; 535ccd979bdSMark Fasheh if (status != -EAGAIN) 536ccd979bdSMark Fasheh break; 537ccd979bdSMark Fasheh } 538ccd979bdSMark Fasheh 539ccd979bdSMark Fasheh bail: 540ccd979bdSMark Fasheh return status; 541ccd979bdSMark Fasheh } 542ccd979bdSMark Fasheh 543c271c5c2SSunil Mushran static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) 544c271c5c2SSunil Mushran { 545c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) { 546c271c5c2SSunil Mushran if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 547c271c5c2SSunil Mushran mlog(ML_ERROR, "Cannot heartbeat on a locally " 548c271c5c2SSunil Mushran "mounted device.\n"); 549c271c5c2SSunil Mushran return -EINVAL; 550c271c5c2SSunil Mushran } 551c271c5c2SSunil Mushran } 552c271c5c2SSunil Mushran 553c271c5c2SSunil Mushran if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 554c271c5c2SSunil Mushran if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb)) { 555c271c5c2SSunil Mushran mlog(ML_ERROR, "Heartbeat has to be started to mount " 556c271c5c2SSunil Mushran "a read-write clustered device.\n"); 557c271c5c2SSunil Mushran return -EINVAL; 558c271c5c2SSunil Mushran } 559c271c5c2SSunil Mushran } 560c271c5c2SSunil Mushran 561c271c5c2SSunil Mushran return 0; 562c271c5c2SSunil Mushran } 563c271c5c2SSunil Mushran 564ccd979bdSMark Fasheh static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) 565ccd979bdSMark Fasheh { 566ccd979bdSMark Fasheh struct dentry *root; 567ccd979bdSMark Fasheh int status, sector_size; 568c0123adeSTiger Yang struct mount_options parsed_options; 569ccd979bdSMark Fasheh struct inode *inode = NULL; 570ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 571ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 572c271c5c2SSunil Mushran char nodestr[8]; 573ccd979bdSMark Fasheh 574ccd979bdSMark Fasheh mlog_entry("%p, %p, %i", sb, data, silent); 575ccd979bdSMark Fasheh 576c0123adeSTiger Yang if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { 577c271c5c2SSunil Mushran status = -EINVAL; 578c271c5c2SSunil Mushran goto read_super_error; 579c271c5c2SSunil Mushran } 580c271c5c2SSunil Mushran 581ccd979bdSMark Fasheh /* probe for superblock */ 582ccd979bdSMark Fasheh status = ocfs2_sb_probe(sb, &bh, §or_size); 583ccd979bdSMark Fasheh if (status < 0) { 584ccd979bdSMark Fasheh mlog(ML_ERROR, "superblock probe failed!\n"); 585ccd979bdSMark Fasheh goto read_super_error; 586ccd979bdSMark Fasheh } 587ccd979bdSMark Fasheh 588ccd979bdSMark Fasheh status = ocfs2_initialize_super(sb, bh, sector_size); 589ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 590ccd979bdSMark Fasheh if (status < 0) { 591ccd979bdSMark Fasheh mlog_errno(status); 592ccd979bdSMark Fasheh goto read_super_error; 593ccd979bdSMark Fasheh } 594ccd979bdSMark Fasheh brelse(bh); 595ccd979bdSMark Fasheh bh = NULL; 596c0123adeSTiger Yang osb->s_mount_opt = parsed_options.mount_opt; 597c0123adeSTiger Yang osb->s_atime_quantum = parsed_options.atime_quantum; 598c0123adeSTiger Yang osb->preferred_slot = parsed_options.slot; 599d147b3d6SMark Fasheh osb->osb_commit_interval = parsed_options.commit_interval; 6002fbe8d1eSSunil Mushran osb->local_alloc_size = parsed_options.localalloc_opt; 601ccd979bdSMark Fasheh 602ccd979bdSMark Fasheh sb->s_magic = OCFS2_SUPER_MAGIC; 603ccd979bdSMark Fasheh 604ccd979bdSMark Fasheh /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, 605ccd979bdSMark Fasheh * heartbeat=none */ 606ccd979bdSMark Fasheh if (bdev_read_only(sb->s_bdev)) { 607ccd979bdSMark Fasheh if (!(sb->s_flags & MS_RDONLY)) { 608ccd979bdSMark Fasheh status = -EACCES; 609ccd979bdSMark Fasheh mlog(ML_ERROR, "Readonly device detected but readonly " 610ccd979bdSMark Fasheh "mount was not specified.\n"); 611ccd979bdSMark Fasheh goto read_super_error; 612ccd979bdSMark Fasheh } 613ccd979bdSMark Fasheh 614ccd979bdSMark Fasheh /* You should not be able to start a local heartbeat 615ccd979bdSMark Fasheh * on a readonly device. */ 616ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 617ccd979bdSMark Fasheh status = -EROFS; 618ccd979bdSMark Fasheh mlog(ML_ERROR, "Local heartbeat specified on readonly " 619ccd979bdSMark Fasheh "device.\n"); 620ccd979bdSMark Fasheh goto read_super_error; 621ccd979bdSMark Fasheh } 622ccd979bdSMark Fasheh 623ccd979bdSMark Fasheh status = ocfs2_check_journals_nolocks(osb); 624ccd979bdSMark Fasheh if (status < 0) { 625ccd979bdSMark Fasheh if (status == -EROFS) 626ccd979bdSMark Fasheh mlog(ML_ERROR, "Recovery required on readonly " 627ccd979bdSMark Fasheh "file system, but write access is " 628ccd979bdSMark Fasheh "unavailable.\n"); 629ccd979bdSMark Fasheh else 630ccd979bdSMark Fasheh mlog_errno(status); 631ccd979bdSMark Fasheh goto read_super_error; 632ccd979bdSMark Fasheh } 633ccd979bdSMark Fasheh 634ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 1); 635ccd979bdSMark Fasheh 636ccd979bdSMark Fasheh printk(KERN_NOTICE "Readonly device detected. No cluster " 637ccd979bdSMark Fasheh "services will be utilized for this mount. Recovery " 638ccd979bdSMark Fasheh "will be skipped.\n"); 639ccd979bdSMark Fasheh } 640ccd979bdSMark Fasheh 641ccd979bdSMark Fasheh if (!ocfs2_is_hard_readonly(osb)) { 642ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY) 643ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 644ccd979bdSMark Fasheh } 645ccd979bdSMark Fasheh 646c271c5c2SSunil Mushran status = ocfs2_verify_heartbeat(osb); 647c271c5c2SSunil Mushran if (status < 0) { 648c271c5c2SSunil Mushran mlog_errno(status); 649c271c5c2SSunil Mushran goto read_super_error; 650c271c5c2SSunil Mushran } 651c271c5c2SSunil Mushran 652ccd979bdSMark Fasheh osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, 653ccd979bdSMark Fasheh ocfs2_debugfs_root); 654ccd979bdSMark Fasheh if (!osb->osb_debug_root) { 655ccd979bdSMark Fasheh status = -EINVAL; 656ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); 657ccd979bdSMark Fasheh goto read_super_error; 658ccd979bdSMark Fasheh } 659ccd979bdSMark Fasheh 660ccd979bdSMark Fasheh status = ocfs2_mount_volume(sb); 661ccd979bdSMark Fasheh if (osb->root_inode) 662ccd979bdSMark Fasheh inode = igrab(osb->root_inode); 663ccd979bdSMark Fasheh 664ccd979bdSMark Fasheh if (status < 0) 665ccd979bdSMark Fasheh goto read_super_error; 666ccd979bdSMark Fasheh 667ccd979bdSMark Fasheh if (!inode) { 668ccd979bdSMark Fasheh status = -EIO; 669ccd979bdSMark Fasheh mlog_errno(status); 670ccd979bdSMark Fasheh goto read_super_error; 671ccd979bdSMark Fasheh } 672ccd979bdSMark Fasheh 673ccd979bdSMark Fasheh root = d_alloc_root(inode); 674ccd979bdSMark Fasheh if (!root) { 675ccd979bdSMark Fasheh status = -ENOMEM; 676ccd979bdSMark Fasheh mlog_errno(status); 677ccd979bdSMark Fasheh goto read_super_error; 678ccd979bdSMark Fasheh } 679ccd979bdSMark Fasheh 680ccd979bdSMark Fasheh sb->s_root = root; 681ccd979bdSMark Fasheh 682ccd979bdSMark Fasheh ocfs2_complete_mount_recovery(osb); 683ccd979bdSMark Fasheh 684c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 685c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "local"); 686c271c5c2SSunil Mushran else 68719fdb624SJoel Becker snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); 688c271c5c2SSunil Mushran 689c271c5c2SSunil Mushran printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " 690781ee3e2SSunil Mushran "with %s data mode.\n", 691c271c5c2SSunil Mushran osb->dev_str, nodestr, osb->slot_num, 692ccd979bdSMark Fasheh osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : 693ccd979bdSMark Fasheh "ordered"); 694ccd979bdSMark Fasheh 695ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_MOUNTED); 696ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 697ccd979bdSMark Fasheh 698ccd979bdSMark Fasheh mlog_exit(status); 699ccd979bdSMark Fasheh return status; 700ccd979bdSMark Fasheh 701ccd979bdSMark Fasheh read_super_error: 702ccd979bdSMark Fasheh if (bh != NULL) 703ccd979bdSMark Fasheh brelse(bh); 704ccd979bdSMark Fasheh 705ccd979bdSMark Fasheh if (inode) 706ccd979bdSMark Fasheh iput(inode); 707ccd979bdSMark Fasheh 708ccd979bdSMark Fasheh if (osb) { 709ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISABLED); 710ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 711ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 1); 712ccd979bdSMark Fasheh } 713ccd979bdSMark Fasheh 714ccd979bdSMark Fasheh mlog_exit(status); 715ccd979bdSMark Fasheh return status; 716ccd979bdSMark Fasheh } 717ccd979bdSMark Fasheh 718454e2398SDavid Howells static int ocfs2_get_sb(struct file_system_type *fs_type, 719ccd979bdSMark Fasheh int flags, 720ccd979bdSMark Fasheh const char *dev_name, 721454e2398SDavid Howells void *data, 722454e2398SDavid Howells struct vfsmount *mnt) 723ccd979bdSMark Fasheh { 724454e2398SDavid Howells return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, 725454e2398SDavid Howells mnt); 726ccd979bdSMark Fasheh } 727ccd979bdSMark Fasheh 728ccd979bdSMark Fasheh static struct file_system_type ocfs2_fs_type = { 729ccd979bdSMark Fasheh .owner = THIS_MODULE, 730ccd979bdSMark Fasheh .name = "ocfs2", 731ccd979bdSMark Fasheh .get_sb = ocfs2_get_sb, /* is this called when we mount 732ccd979bdSMark Fasheh * the fs? */ 733ccd979bdSMark Fasheh .kill_sb = kill_block_super, /* set to the generic one 734ccd979bdSMark Fasheh * right now, but do we 735ccd979bdSMark Fasheh * need to change that? */ 7361ba9da2fSMark Fasheh .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, 737ccd979bdSMark Fasheh .next = NULL 738ccd979bdSMark Fasheh }; 739ccd979bdSMark Fasheh 740ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, 741ccd979bdSMark Fasheh char *options, 742c0123adeSTiger Yang struct mount_options *mopt, 743ccd979bdSMark Fasheh int is_remount) 744ccd979bdSMark Fasheh { 745ccd979bdSMark Fasheh int status; 746ccd979bdSMark Fasheh char *p; 747ccd979bdSMark Fasheh 748ccd979bdSMark Fasheh mlog_entry("remount: %d, options: \"%s\"\n", is_remount, 749ccd979bdSMark Fasheh options ? options : "(none)"); 750ccd979bdSMark Fasheh 751d147b3d6SMark Fasheh mopt->commit_interval = 0; 752c0123adeSTiger Yang mopt->mount_opt = 0; 753c0123adeSTiger Yang mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; 754c0123adeSTiger Yang mopt->slot = OCFS2_INVALID_SLOT; 7552fbe8d1eSSunil Mushran mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; 756ccd979bdSMark Fasheh 757ccd979bdSMark Fasheh if (!options) { 758ccd979bdSMark Fasheh status = 1; 759ccd979bdSMark Fasheh goto bail; 760ccd979bdSMark Fasheh } 761ccd979bdSMark Fasheh 762ccd979bdSMark Fasheh while ((p = strsep(&options, ",")) != NULL) { 763ccd979bdSMark Fasheh int token, option; 764ccd979bdSMark Fasheh substring_t args[MAX_OPT_ARGS]; 765ccd979bdSMark Fasheh 766ccd979bdSMark Fasheh if (!*p) 767ccd979bdSMark Fasheh continue; 768ccd979bdSMark Fasheh 769ccd979bdSMark Fasheh token = match_token(p, tokens, args); 770ccd979bdSMark Fasheh switch (token) { 771ccd979bdSMark Fasheh case Opt_hb_local: 772c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; 773ccd979bdSMark Fasheh break; 774ccd979bdSMark Fasheh case Opt_hb_none: 775c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; 776ccd979bdSMark Fasheh break; 777ccd979bdSMark Fasheh case Opt_barrier: 778ccd979bdSMark Fasheh if (match_int(&args[0], &option)) { 779ccd979bdSMark Fasheh status = 0; 780ccd979bdSMark Fasheh goto bail; 781ccd979bdSMark Fasheh } 782ccd979bdSMark Fasheh if (option) 783c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_BARRIER; 784ccd979bdSMark Fasheh else 785c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; 786ccd979bdSMark Fasheh break; 787ccd979bdSMark Fasheh case Opt_intr: 788c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; 789ccd979bdSMark Fasheh break; 790ccd979bdSMark Fasheh case Opt_nointr: 791c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_NOINTR; 792ccd979bdSMark Fasheh break; 793ccd979bdSMark Fasheh case Opt_err_panic: 794c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 795ccd979bdSMark Fasheh break; 796ccd979bdSMark Fasheh case Opt_err_ro: 797c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; 798ccd979bdSMark Fasheh break; 799ccd979bdSMark Fasheh case Opt_data_ordered: 800c0123adeSTiger Yang mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; 801ccd979bdSMark Fasheh break; 802ccd979bdSMark Fasheh case Opt_data_writeback: 803c0123adeSTiger Yang mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; 804ccd979bdSMark Fasheh break; 8057f1a37e3STiger Yang case Opt_atime_quantum: 8067f1a37e3STiger Yang if (match_int(&args[0], &option)) { 8077f1a37e3STiger Yang status = 0; 8087f1a37e3STiger Yang goto bail; 8097f1a37e3STiger Yang } 8107f1a37e3STiger Yang if (option >= 0) 811c0123adeSTiger Yang mopt->atime_quantum = option; 8127f1a37e3STiger Yang break; 813baf4661aSSunil Mushran case Opt_slot: 814baf4661aSSunil Mushran option = 0; 815baf4661aSSunil Mushran if (match_int(&args[0], &option)) { 816baf4661aSSunil Mushran status = 0; 817baf4661aSSunil Mushran goto bail; 818baf4661aSSunil Mushran } 819baf4661aSSunil Mushran if (option) 820c0123adeSTiger Yang mopt->slot = (s16)option; 821baf4661aSSunil Mushran break; 822d147b3d6SMark Fasheh case Opt_commit: 823d147b3d6SMark Fasheh option = 0; 824d147b3d6SMark Fasheh if (match_int(&args[0], &option)) { 825d147b3d6SMark Fasheh status = 0; 826d147b3d6SMark Fasheh goto bail; 827d147b3d6SMark Fasheh } 828d147b3d6SMark Fasheh if (option < 0) 829d147b3d6SMark Fasheh return 0; 830d147b3d6SMark Fasheh if (option == 0) 831d147b3d6SMark Fasheh option = JBD_DEFAULT_MAX_COMMIT_AGE; 832d147b3d6SMark Fasheh mopt->commit_interval = HZ * option; 833d147b3d6SMark Fasheh break; 8342fbe8d1eSSunil Mushran case Opt_localalloc: 8352fbe8d1eSSunil Mushran option = 0; 8362fbe8d1eSSunil Mushran if (match_int(&args[0], &option)) { 8372fbe8d1eSSunil Mushran status = 0; 8382fbe8d1eSSunil Mushran goto bail; 8392fbe8d1eSSunil Mushran } 8402fbe8d1eSSunil Mushran if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) 8412fbe8d1eSSunil Mushran mopt->localalloc_opt = option; 8422fbe8d1eSSunil Mushran break; 84353fc622bSMark Fasheh case Opt_localflocks: 84453fc622bSMark Fasheh /* 84553fc622bSMark Fasheh * Changing this during remount could race 84653fc622bSMark Fasheh * flock() requests, or "unbalance" existing 84753fc622bSMark Fasheh * ones (e.g., a lock is taken in one mode but 84853fc622bSMark Fasheh * dropped in the other). If users care enough 84953fc622bSMark Fasheh * to flip locking modes during remount, we 85053fc622bSMark Fasheh * could add a "local" flag to individual 85153fc622bSMark Fasheh * flock structures for proper tracking of 85253fc622bSMark Fasheh * state. 85353fc622bSMark Fasheh */ 85453fc622bSMark Fasheh if (!is_remount) 85553fc622bSMark Fasheh mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; 85653fc622bSMark Fasheh break; 857ccd979bdSMark Fasheh default: 858ccd979bdSMark Fasheh mlog(ML_ERROR, 859ccd979bdSMark Fasheh "Unrecognized mount option \"%s\" " 860ccd979bdSMark Fasheh "or missing value\n", p); 861ccd979bdSMark Fasheh status = 0; 862ccd979bdSMark Fasheh goto bail; 863ccd979bdSMark Fasheh } 864ccd979bdSMark Fasheh } 865ccd979bdSMark Fasheh 866ccd979bdSMark Fasheh status = 1; 867ccd979bdSMark Fasheh 868ccd979bdSMark Fasheh bail: 869ccd979bdSMark Fasheh mlog_exit(status); 870ccd979bdSMark Fasheh return status; 871ccd979bdSMark Fasheh } 872ccd979bdSMark Fasheh 873d550071cSSunil Mushran static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) 874d550071cSSunil Mushran { 875d550071cSSunil Mushran struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); 876d550071cSSunil Mushran unsigned long opts = osb->s_mount_opt; 877d550071cSSunil Mushran 878d550071cSSunil Mushran if (opts & OCFS2_MOUNT_HB_LOCAL) 879d550071cSSunil Mushran seq_printf(s, ",_netdev,heartbeat=local"); 880d550071cSSunil Mushran else 881d550071cSSunil Mushran seq_printf(s, ",heartbeat=none"); 882d550071cSSunil Mushran 883d550071cSSunil Mushran if (opts & OCFS2_MOUNT_NOINTR) 884d550071cSSunil Mushran seq_printf(s, ",nointr"); 885d550071cSSunil Mushran 886d550071cSSunil Mushran if (opts & OCFS2_MOUNT_DATA_WRITEBACK) 887d550071cSSunil Mushran seq_printf(s, ",data=writeback"); 888d550071cSSunil Mushran else 889d550071cSSunil Mushran seq_printf(s, ",data=ordered"); 890d550071cSSunil Mushran 891d550071cSSunil Mushran if (opts & OCFS2_MOUNT_BARRIER) 892d550071cSSunil Mushran seq_printf(s, ",barrier=1"); 893d550071cSSunil Mushran 894d550071cSSunil Mushran if (opts & OCFS2_MOUNT_ERRORS_PANIC) 895d550071cSSunil Mushran seq_printf(s, ",errors=panic"); 896d550071cSSunil Mushran else 897d550071cSSunil Mushran seq_printf(s, ",errors=remount-ro"); 898d550071cSSunil Mushran 899d550071cSSunil Mushran if (osb->preferred_slot != OCFS2_INVALID_SLOT) 900d550071cSSunil Mushran seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); 901d550071cSSunil Mushran 902d550071cSSunil Mushran if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) 903d550071cSSunil Mushran seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); 904d550071cSSunil Mushran 905d147b3d6SMark Fasheh if (osb->osb_commit_interval) 906d147b3d6SMark Fasheh seq_printf(s, ",commit=%u", 907d147b3d6SMark Fasheh (unsigned) (osb->osb_commit_interval / HZ)); 908d147b3d6SMark Fasheh 9092fbe8d1eSSunil Mushran if (osb->local_alloc_size != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) 9102fbe8d1eSSunil Mushran seq_printf(s, ",localalloc=%d", osb->local_alloc_size); 9112fbe8d1eSSunil Mushran 91253fc622bSMark Fasheh if (opts & OCFS2_MOUNT_LOCALFLOCKS) 91353fc622bSMark Fasheh seq_printf(s, ",localflocks,"); 91453fc622bSMark Fasheh 915d550071cSSunil Mushran return 0; 916d550071cSSunil Mushran } 917d550071cSSunil Mushran 918ccd979bdSMark Fasheh static int __init ocfs2_init(void) 919ccd979bdSMark Fasheh { 920ccd979bdSMark Fasheh int status; 921ccd979bdSMark Fasheh 922ccd979bdSMark Fasheh mlog_entry_void(); 923ccd979bdSMark Fasheh 924ccd979bdSMark Fasheh ocfs2_print_version(); 925ccd979bdSMark Fasheh 92624ef1815SJoel Becker dlmglue_init_stack(); 92724ef1815SJoel Becker 928ccd979bdSMark Fasheh status = init_ocfs2_uptodate_cache(); 929ccd979bdSMark Fasheh if (status < 0) { 930ccd979bdSMark Fasheh mlog_errno(status); 931ccd979bdSMark Fasheh goto leave; 932ccd979bdSMark Fasheh } 933ccd979bdSMark Fasheh 934ccd979bdSMark Fasheh status = ocfs2_initialize_mem_caches(); 935ccd979bdSMark Fasheh if (status < 0) { 936ccd979bdSMark Fasheh mlog_errno(status); 937ccd979bdSMark Fasheh goto leave; 938ccd979bdSMark Fasheh } 939ccd979bdSMark Fasheh 940ccd979bdSMark Fasheh ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); 941ccd979bdSMark Fasheh if (!ocfs2_wq) { 942ccd979bdSMark Fasheh status = -ENOMEM; 943ccd979bdSMark Fasheh goto leave; 944ccd979bdSMark Fasheh } 945ccd979bdSMark Fasheh 946ccd979bdSMark Fasheh ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); 947ccd979bdSMark Fasheh if (!ocfs2_debugfs_root) { 948ccd979bdSMark Fasheh status = -EFAULT; 949ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); 950ccd979bdSMark Fasheh } 951ccd979bdSMark Fasheh 952ccd979bdSMark Fasheh leave: 953ccd979bdSMark Fasheh if (status < 0) { 954ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 955ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 956ccd979bdSMark Fasheh } 957ccd979bdSMark Fasheh 958ccd979bdSMark Fasheh mlog_exit(status); 959ccd979bdSMark Fasheh 960ccd979bdSMark Fasheh if (status >= 0) { 961ccd979bdSMark Fasheh return register_filesystem(&ocfs2_fs_type); 962ccd979bdSMark Fasheh } else 963ccd979bdSMark Fasheh return -1; 964ccd979bdSMark Fasheh } 965ccd979bdSMark Fasheh 966ccd979bdSMark Fasheh static void __exit ocfs2_exit(void) 967ccd979bdSMark Fasheh { 968ccd979bdSMark Fasheh mlog_entry_void(); 969ccd979bdSMark Fasheh 970ccd979bdSMark Fasheh if (ocfs2_wq) { 971ccd979bdSMark Fasheh flush_workqueue(ocfs2_wq); 972ccd979bdSMark Fasheh destroy_workqueue(ocfs2_wq); 973ccd979bdSMark Fasheh } 974ccd979bdSMark Fasheh 975ccd979bdSMark Fasheh debugfs_remove(ocfs2_debugfs_root); 976ccd979bdSMark Fasheh 977ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 978ccd979bdSMark Fasheh 979ccd979bdSMark Fasheh unregister_filesystem(&ocfs2_fs_type); 980ccd979bdSMark Fasheh 981ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 982ccd979bdSMark Fasheh 98324ef1815SJoel Becker dlmglue_exit_stack(); 98424ef1815SJoel Becker 985ccd979bdSMark Fasheh mlog_exit_void(); 986ccd979bdSMark Fasheh } 987ccd979bdSMark Fasheh 988ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb) 989ccd979bdSMark Fasheh { 990ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 991ccd979bdSMark Fasheh 992ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 993ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 0); 994ccd979bdSMark Fasheh 995ccd979bdSMark Fasheh mlog_exit_void(); 996ccd979bdSMark Fasheh } 997ccd979bdSMark Fasheh 998726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 999ccd979bdSMark Fasheh { 1000ccd979bdSMark Fasheh struct ocfs2_super *osb; 1001ccd979bdSMark Fasheh u32 numbits, freebits; 1002ccd979bdSMark Fasheh int status; 1003ccd979bdSMark Fasheh struct ocfs2_dinode *bm_lock; 1004ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 1005ccd979bdSMark Fasheh struct inode *inode = NULL; 1006ccd979bdSMark Fasheh 1007726c3342SDavid Howells mlog_entry("(%p, %p)\n", dentry->d_sb, buf); 1008ccd979bdSMark Fasheh 1009726c3342SDavid Howells osb = OCFS2_SB(dentry->d_sb); 1010ccd979bdSMark Fasheh 1011ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, 1012ccd979bdSMark Fasheh GLOBAL_BITMAP_SYSTEM_INODE, 1013ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1014ccd979bdSMark Fasheh if (!inode) { 1015ccd979bdSMark Fasheh mlog(ML_ERROR, "failed to get bitmap inode\n"); 1016ccd979bdSMark Fasheh status = -EIO; 1017ccd979bdSMark Fasheh goto bail; 1018ccd979bdSMark Fasheh } 1019ccd979bdSMark Fasheh 1020e63aecb6SMark Fasheh status = ocfs2_inode_lock(inode, &bh, 0); 1021ccd979bdSMark Fasheh if (status < 0) { 1022ccd979bdSMark Fasheh mlog_errno(status); 1023ccd979bdSMark Fasheh goto bail; 1024ccd979bdSMark Fasheh } 1025ccd979bdSMark Fasheh 1026ccd979bdSMark Fasheh bm_lock = (struct ocfs2_dinode *) bh->b_data; 1027ccd979bdSMark Fasheh 1028ccd979bdSMark Fasheh numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); 1029ccd979bdSMark Fasheh freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); 1030ccd979bdSMark Fasheh 1031ccd979bdSMark Fasheh buf->f_type = OCFS2_SUPER_MAGIC; 1032726c3342SDavid Howells buf->f_bsize = dentry->d_sb->s_blocksize; 1033ccd979bdSMark Fasheh buf->f_namelen = OCFS2_MAX_FILENAME_LEN; 1034ccd979bdSMark Fasheh buf->f_blocks = ((sector_t) numbits) * 1035ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 1036ccd979bdSMark Fasheh buf->f_bfree = ((sector_t) freebits) * 1037ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 1038ccd979bdSMark Fasheh buf->f_bavail = buf->f_bfree; 1039ccd979bdSMark Fasheh buf->f_files = numbits; 1040ccd979bdSMark Fasheh buf->f_ffree = freebits; 1041ccd979bdSMark Fasheh 1042ccd979bdSMark Fasheh brelse(bh); 1043ccd979bdSMark Fasheh 1044e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 0); 1045ccd979bdSMark Fasheh status = 0; 1046ccd979bdSMark Fasheh bail: 1047ccd979bdSMark Fasheh if (inode) 1048ccd979bdSMark Fasheh iput(inode); 1049ccd979bdSMark Fasheh 1050ccd979bdSMark Fasheh mlog_exit(status); 1051ccd979bdSMark Fasheh 1052ccd979bdSMark Fasheh return status; 1053ccd979bdSMark Fasheh } 1054ccd979bdSMark Fasheh 10554ba9b9d0SChristoph Lameter static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data) 1056ccd979bdSMark Fasheh { 1057ccd979bdSMark Fasheh struct ocfs2_inode_info *oi = data; 1058ccd979bdSMark Fasheh 1059ccd979bdSMark Fasheh oi->ip_flags = 0; 1060ccd979bdSMark Fasheh oi->ip_open_count = 0; 1061ccd979bdSMark Fasheh spin_lock_init(&oi->ip_lock); 106283418978SMark Fasheh ocfs2_extent_map_init(&oi->vfs_inode); 1063ccd979bdSMark Fasheh INIT_LIST_HEAD(&oi->ip_io_markers); 1064ccd979bdSMark Fasheh oi->ip_created_trans = 0; 1065ccd979bdSMark Fasheh oi->ip_last_trans = 0; 1066ccd979bdSMark Fasheh oi->ip_dir_start_lookup = 0; 1067ccd979bdSMark Fasheh 1068ccd979bdSMark Fasheh init_rwsem(&oi->ip_alloc_sem); 1069251b6eccSMark Fasheh mutex_init(&oi->ip_io_mutex); 1070ccd979bdSMark Fasheh 1071ccd979bdSMark Fasheh oi->ip_blkno = 0ULL; 1072ccd979bdSMark Fasheh oi->ip_clusters = 0; 1073ccd979bdSMark Fasheh 1074ccd979bdSMark Fasheh ocfs2_lock_res_init_once(&oi->ip_rw_lockres); 1075e63aecb6SMark Fasheh ocfs2_lock_res_init_once(&oi->ip_inode_lockres); 107650008630STiger Yang ocfs2_lock_res_init_once(&oi->ip_open_lockres); 1077ccd979bdSMark Fasheh 1078ccd979bdSMark Fasheh ocfs2_metadata_cache_init(&oi->vfs_inode); 1079ccd979bdSMark Fasheh 1080ccd979bdSMark Fasheh inode_init_once(&oi->vfs_inode); 1081ccd979bdSMark Fasheh } 1082ccd979bdSMark Fasheh 1083ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void) 1084ccd979bdSMark Fasheh { 1085ccd979bdSMark Fasheh ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", 1086ccd979bdSMark Fasheh sizeof(struct ocfs2_inode_info), 1087fffb60f9SPaul Jackson 0, 1088fffb60f9SPaul Jackson (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| 1089fffb60f9SPaul Jackson SLAB_MEM_SPREAD), 109020c2df83SPaul Mundt ocfs2_inode_init_once); 1091ccd979bdSMark Fasheh if (!ocfs2_inode_cachep) 1092ccd979bdSMark Fasheh return -ENOMEM; 1093ccd979bdSMark Fasheh 1094ccd979bdSMark Fasheh return 0; 1095ccd979bdSMark Fasheh } 1096ccd979bdSMark Fasheh 1097ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void) 1098ccd979bdSMark Fasheh { 1099ccd979bdSMark Fasheh if (ocfs2_inode_cachep) 1100ccd979bdSMark Fasheh kmem_cache_destroy(ocfs2_inode_cachep); 1101ccd979bdSMark Fasheh 1102ccd979bdSMark Fasheh ocfs2_inode_cachep = NULL; 1103ccd979bdSMark Fasheh } 1104ccd979bdSMark Fasheh 1105ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 1106ccd979bdSMark Fasheh struct buffer_head **bh, 1107ccd979bdSMark Fasheh int block, 1108ccd979bdSMark Fasheh int sect_size) 1109ccd979bdSMark Fasheh { 1110ccd979bdSMark Fasheh if (!sb_set_blocksize(sb, sect_size)) { 1111ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to set blocksize\n"); 1112ccd979bdSMark Fasheh return -EIO; 1113ccd979bdSMark Fasheh } 1114ccd979bdSMark Fasheh 1115ccd979bdSMark Fasheh *bh = sb_getblk(sb, block); 1116ccd979bdSMark Fasheh if (!*bh) { 1117ccd979bdSMark Fasheh mlog_errno(-EIO); 1118ccd979bdSMark Fasheh return -EIO; 1119ccd979bdSMark Fasheh } 1120ccd979bdSMark Fasheh lock_buffer(*bh); 1121ccd979bdSMark Fasheh if (!buffer_dirty(*bh)) 1122ccd979bdSMark Fasheh clear_buffer_uptodate(*bh); 1123ccd979bdSMark Fasheh unlock_buffer(*bh); 1124ccd979bdSMark Fasheh ll_rw_block(READ, 1, bh); 1125ccd979bdSMark Fasheh wait_on_buffer(*bh); 1126ccd979bdSMark Fasheh return 0; 1127ccd979bdSMark Fasheh } 1128ccd979bdSMark Fasheh 1129ccd979bdSMark Fasheh /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ 1130ccd979bdSMark Fasheh static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) 1131ccd979bdSMark Fasheh { 1132ccd979bdSMark Fasheh int status; 1133ccd979bdSMark Fasheh 1134ccd979bdSMark Fasheh /* XXX hold a ref on the node while mounte? easy enough, if 1135ccd979bdSMark Fasheh * desirable. */ 1136c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1137c271c5c2SSunil Mushran osb->node_num = 0; 113819fdb624SJoel Becker else { 113919fdb624SJoel Becker status = ocfs2_cluster_this_node(&osb->node_num); 114019fdb624SJoel Becker if (status < 0) { 114119fdb624SJoel Becker mlog_errno(status); 114219fdb624SJoel Becker mlog(ML_ERROR, 114319fdb624SJoel Becker "could not find this host's node number\n"); 1144ccd979bdSMark Fasheh goto bail; 1145ccd979bdSMark Fasheh } 114619fdb624SJoel Becker } 1147ccd979bdSMark Fasheh 114819fdb624SJoel Becker mlog(0, "I am node %u\n", osb->node_num); 1149ccd979bdSMark Fasheh 1150ccd979bdSMark Fasheh status = 0; 1151ccd979bdSMark Fasheh bail: 1152ccd979bdSMark Fasheh return status; 1153ccd979bdSMark Fasheh } 1154ccd979bdSMark Fasheh 1155ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb) 1156ccd979bdSMark Fasheh { 1157ccd979bdSMark Fasheh int status = 0; 1158ccd979bdSMark Fasheh int unlock_super = 0; 1159ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1160ccd979bdSMark Fasheh 1161ccd979bdSMark Fasheh mlog_entry_void(); 1162ccd979bdSMark Fasheh 1163ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 1164ccd979bdSMark Fasheh goto leave; 1165ccd979bdSMark Fasheh 1166ccd979bdSMark Fasheh status = ocfs2_fill_local_node_info(osb); 1167ccd979bdSMark Fasheh if (status < 0) { 1168ccd979bdSMark Fasheh mlog_errno(status); 1169ccd979bdSMark Fasheh goto leave; 1170ccd979bdSMark Fasheh } 1171ccd979bdSMark Fasheh 1172ccd979bdSMark Fasheh status = ocfs2_dlm_init(osb); 1173ccd979bdSMark Fasheh if (status < 0) { 1174ccd979bdSMark Fasheh mlog_errno(status); 1175ccd979bdSMark Fasheh goto leave; 1176ccd979bdSMark Fasheh } 1177ccd979bdSMark Fasheh 1178ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 1179ccd979bdSMark Fasheh if (status < 0) { 1180ccd979bdSMark Fasheh mlog_errno(status); 1181ccd979bdSMark Fasheh goto leave; 1182ccd979bdSMark Fasheh } 1183ccd979bdSMark Fasheh unlock_super = 1; 1184ccd979bdSMark Fasheh 1185ccd979bdSMark Fasheh /* This will load up the node map and add ourselves to it. */ 1186ccd979bdSMark Fasheh status = ocfs2_find_slot(osb); 1187ccd979bdSMark Fasheh if (status < 0) { 1188ccd979bdSMark Fasheh mlog_errno(status); 1189ccd979bdSMark Fasheh goto leave; 1190ccd979bdSMark Fasheh } 1191ccd979bdSMark Fasheh 1192ccd979bdSMark Fasheh /* load all node-local system inodes */ 1193ccd979bdSMark Fasheh status = ocfs2_init_local_system_inodes(osb); 1194ccd979bdSMark Fasheh if (status < 0) { 1195ccd979bdSMark Fasheh mlog_errno(status); 1196ccd979bdSMark Fasheh goto leave; 1197ccd979bdSMark Fasheh } 1198ccd979bdSMark Fasheh 1199ccd979bdSMark Fasheh status = ocfs2_check_volume(osb); 1200ccd979bdSMark Fasheh if (status < 0) { 1201ccd979bdSMark Fasheh mlog_errno(status); 1202ccd979bdSMark Fasheh goto leave; 1203ccd979bdSMark Fasheh } 1204ccd979bdSMark Fasheh 1205ccd979bdSMark Fasheh status = ocfs2_truncate_log_init(osb); 1206ccd979bdSMark Fasheh if (status < 0) { 1207ccd979bdSMark Fasheh mlog_errno(status); 1208ccd979bdSMark Fasheh goto leave; 1209ccd979bdSMark Fasheh } 1210ccd979bdSMark Fasheh 1211c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1212c271c5c2SSunil Mushran goto leave; 1213c271c5c2SSunil Mushran 1214ccd979bdSMark Fasheh leave: 1215ccd979bdSMark Fasheh if (unlock_super) 1216ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1217ccd979bdSMark Fasheh 1218ccd979bdSMark Fasheh mlog_exit(status); 1219ccd979bdSMark Fasheh return status; 1220ccd979bdSMark Fasheh } 1221ccd979bdSMark Fasheh 1222ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) 1223ccd979bdSMark Fasheh { 1224ccd979bdSMark Fasheh int tmp; 1225ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 1226c271c5c2SSunil Mushran char nodestr[8]; 1227ccd979bdSMark Fasheh 1228ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 1229ccd979bdSMark Fasheh 1230ccd979bdSMark Fasheh BUG_ON(!sb); 1231ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 1232ccd979bdSMark Fasheh BUG_ON(!osb); 1233ccd979bdSMark Fasheh 1234ccd979bdSMark Fasheh ocfs2_shutdown_local_alloc(osb); 1235ccd979bdSMark Fasheh 1236ccd979bdSMark Fasheh ocfs2_truncate_log_shutdown(osb); 1237ccd979bdSMark Fasheh 1238553abd04SJoel Becker /* This will disable recovery and flush any recovery work. */ 1239553abd04SJoel Becker ocfs2_recovery_exit(osb); 1240ccd979bdSMark Fasheh 1241ccd979bdSMark Fasheh ocfs2_journal_shutdown(osb); 1242ccd979bdSMark Fasheh 1243ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 1244ccd979bdSMark Fasheh 12454670c46dSJoel Becker /* No cluster connection means we've failed during mount, so skip 12464670c46dSJoel Becker * all the steps which depended on that to complete. */ 12474670c46dSJoel Becker if (osb->cconn) { 1248ccd979bdSMark Fasheh tmp = ocfs2_super_lock(osb, 1); 1249ccd979bdSMark Fasheh if (tmp < 0) { 1250ccd979bdSMark Fasheh mlog_errno(tmp); 1251ccd979bdSMark Fasheh return; 1252ccd979bdSMark Fasheh } 125319b613d4SMark Fasheh } 1254ccd979bdSMark Fasheh 1255ccd979bdSMark Fasheh if (osb->slot_num != OCFS2_INVALID_SLOT) 1256ccd979bdSMark Fasheh ocfs2_put_slot(osb); 1257ccd979bdSMark Fasheh 12584670c46dSJoel Becker if (osb->cconn) 1259ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1260ccd979bdSMark Fasheh 1261ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 1262ccd979bdSMark Fasheh 12634670c46dSJoel Becker if (osb->cconn) 1264ccd979bdSMark Fasheh ocfs2_dlm_shutdown(osb); 1265ccd979bdSMark Fasheh 1266ccd979bdSMark Fasheh debugfs_remove(osb->osb_debug_root); 1267ccd979bdSMark Fasheh 12686953b4c0SJoel Becker /* 12696953b4c0SJoel Becker * This is a small hack to move ocfs2_hb_ctl into stackglue. 12706953b4c0SJoel Becker * If we're dismounting due to mount error, mount.ocfs2 will clean 12716953b4c0SJoel Becker * up heartbeat. If we're a local mount, there is no heartbeat. 12726953b4c0SJoel Becker * If we failed before we got a uuid_str yet, we can't stop 12736953b4c0SJoel Becker * heartbeat. Otherwise, do it. 12746953b4c0SJoel Becker */ 12756953b4c0SJoel Becker if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) 12766953b4c0SJoel Becker ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); 1277ccd979bdSMark Fasheh 1278ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); 1279ccd979bdSMark Fasheh 1280c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) 1281c271c5c2SSunil Mushran snprintf(nodestr, sizeof(nodestr), "local"); 1282c271c5c2SSunil Mushran else 128319fdb624SJoel Becker snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); 1284c271c5c2SSunil Mushran 1285c271c5c2SSunil Mushran printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", 1286c271c5c2SSunil Mushran osb->dev_str, nodestr); 1287ccd979bdSMark Fasheh 1288ccd979bdSMark Fasheh ocfs2_delete_osb(osb); 1289ccd979bdSMark Fasheh kfree(osb); 1290ccd979bdSMark Fasheh sb->s_dev = 0; 1291ccd979bdSMark Fasheh sb->s_fs_info = NULL; 1292ccd979bdSMark Fasheh } 1293ccd979bdSMark Fasheh 1294ccd979bdSMark Fasheh static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, 1295ccd979bdSMark Fasheh unsigned uuid_bytes) 1296ccd979bdSMark Fasheh { 1297ccd979bdSMark Fasheh int i, ret; 1298ccd979bdSMark Fasheh char *ptr; 1299ccd979bdSMark Fasheh 1300ccd979bdSMark Fasheh BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); 1301ccd979bdSMark Fasheh 1302cd861280SRobert P. J. Day osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); 1303ccd979bdSMark Fasheh if (osb->uuid_str == NULL) 1304ccd979bdSMark Fasheh return -ENOMEM; 1305ccd979bdSMark Fasheh 1306ccd979bdSMark Fasheh for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { 1307ccd979bdSMark Fasheh /* print with null */ 1308ccd979bdSMark Fasheh ret = snprintf(ptr, 3, "%02X", uuid[i]); 1309ccd979bdSMark Fasheh if (ret != 2) /* drop super cleans up */ 1310ccd979bdSMark Fasheh return -EINVAL; 1311ccd979bdSMark Fasheh /* then only advance past the last char */ 1312ccd979bdSMark Fasheh ptr += 2; 1313ccd979bdSMark Fasheh } 1314ccd979bdSMark Fasheh 1315ccd979bdSMark Fasheh return 0; 1316ccd979bdSMark Fasheh } 1317ccd979bdSMark Fasheh 1318ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 1319ccd979bdSMark Fasheh struct buffer_head *bh, 1320ccd979bdSMark Fasheh int sector_size) 1321ccd979bdSMark Fasheh { 1322bddb8eb3SDenis Cheng int status; 13235a254031SMark Fasheh int i, cbits, bbits; 13245a254031SMark Fasheh struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; 1325ccd979bdSMark Fasheh struct inode *inode = NULL; 1326ccd979bdSMark Fasheh struct ocfs2_journal *journal; 1327ccd979bdSMark Fasheh __le32 uuid_net_key; 1328ccd979bdSMark Fasheh struct ocfs2_super *osb; 1329ccd979bdSMark Fasheh 1330ccd979bdSMark Fasheh mlog_entry_void(); 1331ccd979bdSMark Fasheh 1332cd861280SRobert P. J. Day osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); 1333ccd979bdSMark Fasheh if (!osb) { 1334ccd979bdSMark Fasheh status = -ENOMEM; 1335ccd979bdSMark Fasheh mlog_errno(status); 1336ccd979bdSMark Fasheh goto bail; 1337ccd979bdSMark Fasheh } 1338ccd979bdSMark Fasheh 1339ccd979bdSMark Fasheh sb->s_fs_info = osb; 1340ccd979bdSMark Fasheh sb->s_op = &ocfs2_sops; 1341ccd979bdSMark Fasheh sb->s_export_op = &ocfs2_export_ops; 1342e0dceaf0SMark Fasheh sb->s_time_gran = 1; 1343ccd979bdSMark Fasheh sb->s_flags |= MS_NOATIME; 1344ccd979bdSMark Fasheh /* this is needed to support O_LARGEFILE */ 13455a254031SMark Fasheh cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); 13465a254031SMark Fasheh bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); 13475a254031SMark Fasheh sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); 1348ccd979bdSMark Fasheh 1349ccd979bdSMark Fasheh osb->sb = sb; 1350ccd979bdSMark Fasheh /* Save off for ocfs2_rw_direct */ 1351ccd979bdSMark Fasheh osb->s_sectsize_bits = blksize_bits(sector_size); 1352ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb->s_sectsize_bits); 1353ccd979bdSMark Fasheh 135434d024f8SMark Fasheh spin_lock_init(&osb->dc_task_lock); 135534d024f8SMark Fasheh init_waitqueue_head(&osb->dc_event); 135634d024f8SMark Fasheh osb->dc_work_sequence = 0; 135734d024f8SMark Fasheh osb->dc_wake_sequence = 0; 1358ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->blocked_lock_list); 1359ccd979bdSMark Fasheh osb->blocked_lock_count = 0; 1360ccd979bdSMark Fasheh spin_lock_init(&osb->osb_lock); 1361ccd979bdSMark Fasheh 1362ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.moves, 0); 1363ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.local_data, 0); 1364ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bitmap_data, 0); 1365ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_allocs, 0); 1366ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_extends, 0); 1367ccd979bdSMark Fasheh 1368ccd979bdSMark Fasheh ocfs2_init_node_maps(osb); 1369ccd979bdSMark Fasheh 1370ccd979bdSMark Fasheh snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", 1371ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1372ccd979bdSMark Fasheh 1373553abd04SJoel Becker status = ocfs2_recovery_init(osb); 1374553abd04SJoel Becker if (status) { 1375553abd04SJoel Becker mlog(ML_ERROR, "Unable to initialize recovery state\n"); 1376553abd04SJoel Becker mlog_errno(status); 1377553abd04SJoel Becker goto bail; 1378553abd04SJoel Becker } 1379ccd979bdSMark Fasheh 1380ccd979bdSMark Fasheh init_waitqueue_head(&osb->checkpoint_event); 1381ccd979bdSMark Fasheh atomic_set(&osb->needs_checkpoint, 0); 1382ccd979bdSMark Fasheh 13837f1a37e3STiger Yang osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; 13847f1a37e3STiger Yang 1385ccd979bdSMark Fasheh osb->slot_num = OCFS2_INVALID_SLOT; 1386ccd979bdSMark Fasheh 1387ccd979bdSMark Fasheh osb->local_alloc_state = OCFS2_LA_UNUSED; 1388ccd979bdSMark Fasheh osb->local_alloc_bh = NULL; 1389ccd979bdSMark Fasheh 1390ccd979bdSMark Fasheh init_waitqueue_head(&osb->osb_mount_event); 1391ccd979bdSMark Fasheh 1392ccd979bdSMark Fasheh osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); 1393ccd979bdSMark Fasheh if (!osb->vol_label) { 1394ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc vol label\n"); 1395ccd979bdSMark Fasheh status = -ENOMEM; 1396ccd979bdSMark Fasheh goto bail; 1397ccd979bdSMark Fasheh } 1398ccd979bdSMark Fasheh 1399ccd979bdSMark Fasheh osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); 1400ccd979bdSMark Fasheh if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { 1401ccd979bdSMark Fasheh mlog(ML_ERROR, "Invalid number of node slots (%u)\n", 1402ccd979bdSMark Fasheh osb->max_slots); 1403ccd979bdSMark Fasheh status = -EINVAL; 1404ccd979bdSMark Fasheh goto bail; 1405ccd979bdSMark Fasheh } 1406781ee3e2SSunil Mushran mlog(0, "max_slots for this device: %u\n", osb->max_slots); 1407ccd979bdSMark Fasheh 1408b4df6ed8SMark Fasheh init_waitqueue_head(&osb->osb_wipe_event); 1409b4df6ed8SMark Fasheh osb->osb_orphan_wipes = kcalloc(osb->max_slots, 1410b4df6ed8SMark Fasheh sizeof(*osb->osb_orphan_wipes), 1411b4df6ed8SMark Fasheh GFP_KERNEL); 1412b4df6ed8SMark Fasheh if (!osb->osb_orphan_wipes) { 1413b4df6ed8SMark Fasheh status = -ENOMEM; 1414b4df6ed8SMark Fasheh mlog_errno(status); 1415b4df6ed8SMark Fasheh goto bail; 1416b4df6ed8SMark Fasheh } 1417b4df6ed8SMark Fasheh 1418ccd979bdSMark Fasheh osb->s_feature_compat = 1419ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); 1420ccd979bdSMark Fasheh osb->s_feature_ro_compat = 1421ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); 1422ccd979bdSMark Fasheh osb->s_feature_incompat = 1423ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); 1424ccd979bdSMark Fasheh 1425ccd979bdSMark Fasheh if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { 1426ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount because of unsupported " 1427ccd979bdSMark Fasheh "optional features (%x).\n", i); 1428ccd979bdSMark Fasheh status = -EINVAL; 1429ccd979bdSMark Fasheh goto bail; 1430ccd979bdSMark Fasheh } 1431ccd979bdSMark Fasheh if (!(osb->sb->s_flags & MS_RDONLY) && 1432ccd979bdSMark Fasheh (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { 1433ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount RDWR because of " 1434ccd979bdSMark Fasheh "unsupported optional features (%x).\n", i); 1435ccd979bdSMark Fasheh status = -EINVAL; 1436ccd979bdSMark Fasheh goto bail; 1437ccd979bdSMark Fasheh } 1438ccd979bdSMark Fasheh 1439ccd979bdSMark Fasheh get_random_bytes(&osb->s_next_generation, sizeof(u32)); 1440ccd979bdSMark Fasheh 1441ccd979bdSMark Fasheh /* FIXME 1442ccd979bdSMark Fasheh * This should be done in ocfs2_journal_init(), but unknown 1443ccd979bdSMark Fasheh * ordering issues will cause the filesystem to crash. 1444ccd979bdSMark Fasheh * If anyone wants to figure out what part of the code 1445ccd979bdSMark Fasheh * refers to osb->journal before ocfs2_journal_init() is run, 1446ccd979bdSMark Fasheh * be my guest. 1447ccd979bdSMark Fasheh */ 1448ccd979bdSMark Fasheh /* initialize our journal structure */ 1449ccd979bdSMark Fasheh 1450cd861280SRobert P. J. Day journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); 1451ccd979bdSMark Fasheh if (!journal) { 1452ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc journal\n"); 1453ccd979bdSMark Fasheh status = -ENOMEM; 1454ccd979bdSMark Fasheh goto bail; 1455ccd979bdSMark Fasheh } 1456ccd979bdSMark Fasheh osb->journal = journal; 1457ccd979bdSMark Fasheh journal->j_osb = osb; 1458ccd979bdSMark Fasheh 1459ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 1460ccd979bdSMark Fasheh init_rwsem(&journal->j_trans_barrier); 1461ccd979bdSMark Fasheh init_waitqueue_head(&journal->j_checkpointed); 1462ccd979bdSMark Fasheh spin_lock_init(&journal->j_lock); 1463ccd979bdSMark Fasheh journal->j_trans_id = (unsigned long) 1; 1464ccd979bdSMark Fasheh INIT_LIST_HEAD(&journal->j_la_cleanups); 1465c4028958SDavid Howells INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); 1466ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 1467ccd979bdSMark Fasheh 1468ccd979bdSMark Fasheh /* get some pseudo constants for clustersize bits */ 1469ccd979bdSMark Fasheh osb->s_clustersize_bits = 1470ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits); 1471ccd979bdSMark Fasheh osb->s_clustersize = 1 << osb->s_clustersize_bits; 1472ccd979bdSMark Fasheh mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); 1473ccd979bdSMark Fasheh 1474ccd979bdSMark Fasheh if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || 1475ccd979bdSMark Fasheh osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { 1476ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", 1477ccd979bdSMark Fasheh osb->s_clustersize); 1478ccd979bdSMark Fasheh status = -EINVAL; 1479ccd979bdSMark Fasheh goto bail; 1480ccd979bdSMark Fasheh } 1481ccd979bdSMark Fasheh 1482ccd979bdSMark Fasheh if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) 1483ccd979bdSMark Fasheh > (u32)~0UL) { 1484ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume might try to write to blocks beyond " 1485ccd979bdSMark Fasheh "what jbd can address in 32 bits.\n"); 1486ccd979bdSMark Fasheh status = -EINVAL; 1487ccd979bdSMark Fasheh goto bail; 1488ccd979bdSMark Fasheh } 1489ccd979bdSMark Fasheh 1490ccd979bdSMark Fasheh if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, 1491ccd979bdSMark Fasheh sizeof(di->id2.i_super.s_uuid))) { 1492ccd979bdSMark Fasheh mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); 1493ccd979bdSMark Fasheh status = -ENOMEM; 1494ccd979bdSMark Fasheh goto bail; 1495ccd979bdSMark Fasheh } 1496ccd979bdSMark Fasheh 149778427043SMark Fasheh memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); 1498ccd979bdSMark Fasheh 1499ccd979bdSMark Fasheh strncpy(osb->vol_label, di->id2.i_super.s_label, 63); 1500ccd979bdSMark Fasheh osb->vol_label[63] = '\0'; 1501ccd979bdSMark Fasheh osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); 1502ccd979bdSMark Fasheh osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); 1503ccd979bdSMark Fasheh osb->first_cluster_group_blkno = 1504ccd979bdSMark Fasheh le64_to_cpu(di->id2.i_super.s_first_cluster_group); 1505ccd979bdSMark Fasheh osb->fs_generation = le32_to_cpu(di->i_fs_generation); 1506ccd979bdSMark Fasheh mlog(0, "vol_label: %s\n", osb->vol_label); 1507ccd979bdSMark Fasheh mlog(0, "uuid: %s\n", osb->uuid_str); 1508b0697053SMark Fasheh mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", 1509b0697053SMark Fasheh (unsigned long long)osb->root_blkno, 1510b0697053SMark Fasheh (unsigned long long)osb->system_dir_blkno); 1511ccd979bdSMark Fasheh 1512ccd979bdSMark Fasheh osb->osb_dlm_debug = ocfs2_new_dlm_debug(); 1513ccd979bdSMark Fasheh if (!osb->osb_dlm_debug) { 1514ccd979bdSMark Fasheh status = -ENOMEM; 1515ccd979bdSMark Fasheh mlog_errno(status); 1516ccd979bdSMark Fasheh goto bail; 1517ccd979bdSMark Fasheh } 1518ccd979bdSMark Fasheh 1519ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_INIT); 1520ccd979bdSMark Fasheh 1521ccd979bdSMark Fasheh /* load root, system_dir, and all global system inodes */ 1522ccd979bdSMark Fasheh status = ocfs2_init_global_system_inodes(osb); 1523ccd979bdSMark Fasheh if (status < 0) { 1524ccd979bdSMark Fasheh mlog_errno(status); 1525ccd979bdSMark Fasheh goto bail; 1526ccd979bdSMark Fasheh } 1527ccd979bdSMark Fasheh 1528ccd979bdSMark Fasheh /* 1529ccd979bdSMark Fasheh * global bitmap 1530ccd979bdSMark Fasheh */ 1531ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, 1532ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1533ccd979bdSMark Fasheh if (!inode) { 1534ccd979bdSMark Fasheh status = -EINVAL; 1535ccd979bdSMark Fasheh mlog_errno(status); 1536ccd979bdSMark Fasheh goto bail; 1537ccd979bdSMark Fasheh } 1538ccd979bdSMark Fasheh 1539ccd979bdSMark Fasheh osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; 1540ccd979bdSMark Fasheh iput(inode); 1541ccd979bdSMark Fasheh 1542e9d578a8STao Ma osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; 1543ccd979bdSMark Fasheh 1544ccd979bdSMark Fasheh status = ocfs2_init_slot_info(osb); 1545ccd979bdSMark Fasheh if (status < 0) { 1546ccd979bdSMark Fasheh mlog_errno(status); 1547ccd979bdSMark Fasheh goto bail; 1548ccd979bdSMark Fasheh } 1549ccd979bdSMark Fasheh 1550ccd979bdSMark Fasheh bail: 1551ccd979bdSMark Fasheh mlog_exit(status); 1552ccd979bdSMark Fasheh return status; 1553ccd979bdSMark Fasheh } 1554ccd979bdSMark Fasheh 1555ccd979bdSMark Fasheh /* 1556ccd979bdSMark Fasheh * will return: -EAGAIN if it is ok to keep searching for superblocks 1557ccd979bdSMark Fasheh * -EINVAL if there is a bad superblock 1558ccd979bdSMark Fasheh * 0 on success 1559ccd979bdSMark Fasheh */ 1560ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 1561ccd979bdSMark Fasheh struct buffer_head *bh, 1562ccd979bdSMark Fasheh u32 blksz) 1563ccd979bdSMark Fasheh { 1564ccd979bdSMark Fasheh int status = -EAGAIN; 1565ccd979bdSMark Fasheh 1566ccd979bdSMark Fasheh mlog_entry_void(); 1567ccd979bdSMark Fasheh 1568ccd979bdSMark Fasheh if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, 1569ccd979bdSMark Fasheh strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { 1570ccd979bdSMark Fasheh status = -EINVAL; 1571ccd979bdSMark Fasheh if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { 1572ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with incorrect block " 1573ccd979bdSMark Fasheh "size: found %u, should be %u\n", 1574ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), 1575ccd979bdSMark Fasheh blksz); 1576ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != 1577ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL || 1578ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level) != 1579ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL) { 1580ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with bad version: " 1581ccd979bdSMark Fasheh "found %u.%u, should be %u.%u\n", 1582ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_major_rev_level), 1583ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level), 1584ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL, 1585ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL); 1586ccd979bdSMark Fasheh } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { 1587ccd979bdSMark Fasheh mlog(ML_ERROR, "bad block number on superblock: " 1588b0697053SMark Fasheh "found %llu, should be %llu\n", 15891ca1a111SMark Fasheh (unsigned long long)le64_to_cpu(di->i_blkno), 1590b0697053SMark Fasheh (unsigned long long)bh->b_blocknr); 1591ccd979bdSMark Fasheh } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || 1592ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { 1593ccd979bdSMark Fasheh mlog(ML_ERROR, "bad cluster size found: %u\n", 1594ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); 1595ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { 1596ccd979bdSMark Fasheh mlog(ML_ERROR, "bad root_blkno: 0\n"); 1597ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { 1598ccd979bdSMark Fasheh mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); 1599ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { 1600ccd979bdSMark Fasheh mlog(ML_ERROR, 1601ccd979bdSMark Fasheh "Superblock slots found greater than file system " 1602ccd979bdSMark Fasheh "maximum: found %u, max %u\n", 1603ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_max_slots), 1604ccd979bdSMark Fasheh OCFS2_MAX_SLOTS); 1605ccd979bdSMark Fasheh } else { 1606ccd979bdSMark Fasheh /* found it! */ 1607ccd979bdSMark Fasheh status = 0; 1608ccd979bdSMark Fasheh } 1609ccd979bdSMark Fasheh } 1610ccd979bdSMark Fasheh 1611ccd979bdSMark Fasheh mlog_exit(status); 1612ccd979bdSMark Fasheh return status; 1613ccd979bdSMark Fasheh } 1614ccd979bdSMark Fasheh 1615ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb) 1616ccd979bdSMark Fasheh { 1617bddb8eb3SDenis Cheng int status; 1618ccd979bdSMark Fasheh int dirty; 1619c271c5c2SSunil Mushran int local; 1620ccd979bdSMark Fasheh struct ocfs2_dinode *local_alloc = NULL; /* only used if we 1621ccd979bdSMark Fasheh * recover 1622ccd979bdSMark Fasheh * ourselves. */ 1623ccd979bdSMark Fasheh 1624ccd979bdSMark Fasheh mlog_entry_void(); 1625ccd979bdSMark Fasheh 1626ccd979bdSMark Fasheh /* Init our journal object. */ 1627ccd979bdSMark Fasheh status = ocfs2_journal_init(osb->journal, &dirty); 1628ccd979bdSMark Fasheh if (status < 0) { 1629ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not initialize journal!\n"); 1630ccd979bdSMark Fasheh goto finally; 1631ccd979bdSMark Fasheh } 1632ccd979bdSMark Fasheh 1633ccd979bdSMark Fasheh /* If the journal was unmounted cleanly then we don't want to 1634ccd979bdSMark Fasheh * recover anything. Otherwise, journal_load will do that 1635ccd979bdSMark Fasheh * dirty work for us :) */ 1636ccd979bdSMark Fasheh if (!dirty) { 1637ccd979bdSMark Fasheh status = ocfs2_journal_wipe(osb->journal, 0); 1638ccd979bdSMark Fasheh if (status < 0) { 1639ccd979bdSMark Fasheh mlog_errno(status); 1640ccd979bdSMark Fasheh goto finally; 1641ccd979bdSMark Fasheh } 1642ccd979bdSMark Fasheh } else { 1643ccd979bdSMark Fasheh mlog(ML_NOTICE, "File system was not unmounted cleanly, " 1644ccd979bdSMark Fasheh "recovering volume.\n"); 1645ccd979bdSMark Fasheh } 1646ccd979bdSMark Fasheh 1647c271c5c2SSunil Mushran local = ocfs2_mount_local(osb); 1648c271c5c2SSunil Mushran 1649ccd979bdSMark Fasheh /* will play back anything left in the journal. */ 1650c271c5c2SSunil Mushran ocfs2_journal_load(osb->journal, local); 1651ccd979bdSMark Fasheh 1652ccd979bdSMark Fasheh if (dirty) { 1653ccd979bdSMark Fasheh /* recover my local alloc if we didn't unmount cleanly. */ 1654ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, 1655ccd979bdSMark Fasheh osb->slot_num, 1656ccd979bdSMark Fasheh &local_alloc); 1657ccd979bdSMark Fasheh if (status < 0) { 1658ccd979bdSMark Fasheh mlog_errno(status); 1659ccd979bdSMark Fasheh goto finally; 1660ccd979bdSMark Fasheh } 1661ccd979bdSMark Fasheh /* we complete the recovery process after we've marked 1662ccd979bdSMark Fasheh * ourselves as mounted. */ 1663ccd979bdSMark Fasheh } 1664ccd979bdSMark Fasheh 1665ccd979bdSMark Fasheh mlog(0, "Journal loaded.\n"); 1666ccd979bdSMark Fasheh 1667ccd979bdSMark Fasheh status = ocfs2_load_local_alloc(osb); 1668ccd979bdSMark Fasheh if (status < 0) { 1669ccd979bdSMark Fasheh mlog_errno(status); 1670ccd979bdSMark Fasheh goto finally; 1671ccd979bdSMark Fasheh } 1672ccd979bdSMark Fasheh 1673ccd979bdSMark Fasheh if (dirty) { 1674ccd979bdSMark Fasheh /* Recovery will be completed after we've mounted the 1675ccd979bdSMark Fasheh * rest of the volume. */ 1676ccd979bdSMark Fasheh osb->dirty = 1; 1677ccd979bdSMark Fasheh osb->local_alloc_copy = local_alloc; 1678ccd979bdSMark Fasheh local_alloc = NULL; 1679ccd979bdSMark Fasheh } 1680ccd979bdSMark Fasheh 1681ccd979bdSMark Fasheh /* go through each journal, trylock it and if you get the 1682ccd979bdSMark Fasheh * lock, and it's marked as dirty, set the bit in the recover 1683ccd979bdSMark Fasheh * map and launch a recovery thread for it. */ 1684ccd979bdSMark Fasheh status = ocfs2_mark_dead_nodes(osb); 1685ccd979bdSMark Fasheh if (status < 0) 1686ccd979bdSMark Fasheh mlog_errno(status); 1687ccd979bdSMark Fasheh 1688ccd979bdSMark Fasheh finally: 1689ccd979bdSMark Fasheh if (local_alloc) 1690ccd979bdSMark Fasheh kfree(local_alloc); 1691ccd979bdSMark Fasheh 1692ccd979bdSMark Fasheh mlog_exit(status); 1693ccd979bdSMark Fasheh return status; 1694ccd979bdSMark Fasheh } 1695ccd979bdSMark Fasheh 1696ccd979bdSMark Fasheh /* 1697ccd979bdSMark Fasheh * The routine gets called from dismount or close whenever a dismount on 1698ccd979bdSMark Fasheh * volume is requested and the osb open count becomes 1. 1699ccd979bdSMark Fasheh * It will remove the osb from the global list and also free up all the 1700ccd979bdSMark Fasheh * initialized resources and fileobject. 1701ccd979bdSMark Fasheh */ 1702ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb) 1703ccd979bdSMark Fasheh { 1704ccd979bdSMark Fasheh mlog_entry_void(); 1705ccd979bdSMark Fasheh 1706ccd979bdSMark Fasheh /* This function assumes that the caller has the main osb resource */ 1707ccd979bdSMark Fasheh 17088e8a4603SMark Fasheh ocfs2_free_slot_info(osb); 1709ccd979bdSMark Fasheh 1710b4df6ed8SMark Fasheh kfree(osb->osb_orphan_wipes); 1711ccd979bdSMark Fasheh /* FIXME 1712ccd979bdSMark Fasheh * This belongs in journal shutdown, but because we have to 1713ccd979bdSMark Fasheh * allocate osb->journal at the start of ocfs2_initalize_osb(), 1714ccd979bdSMark Fasheh * we free it here. 1715ccd979bdSMark Fasheh */ 1716ccd979bdSMark Fasheh kfree(osb->journal); 1717ccd979bdSMark Fasheh if (osb->local_alloc_copy) 1718ccd979bdSMark Fasheh kfree(osb->local_alloc_copy); 1719ccd979bdSMark Fasheh kfree(osb->uuid_str); 1720ccd979bdSMark Fasheh ocfs2_put_dlm_debug(osb->osb_dlm_debug); 1721ccd979bdSMark Fasheh memset(osb, 0, sizeof(struct ocfs2_super)); 1722ccd979bdSMark Fasheh 1723ccd979bdSMark Fasheh mlog_exit_void(); 1724ccd979bdSMark Fasheh } 1725ccd979bdSMark Fasheh 1726ccd979bdSMark Fasheh /* Put OCFS2 into a readonly state, or (if the user specifies it), 1727ccd979bdSMark Fasheh * panic(). We do not support continue-on-error operation. */ 1728ccd979bdSMark Fasheh static void ocfs2_handle_error(struct super_block *sb) 1729ccd979bdSMark Fasheh { 1730ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1731ccd979bdSMark Fasheh 1732ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) 1733ccd979bdSMark Fasheh panic("OCFS2: (device %s): panic forced after error\n", 1734ccd979bdSMark Fasheh sb->s_id); 1735ccd979bdSMark Fasheh 1736ccd979bdSMark Fasheh ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); 1737ccd979bdSMark Fasheh 1738ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY && 1739ccd979bdSMark Fasheh (ocfs2_is_soft_readonly(osb) || 1740ccd979bdSMark Fasheh ocfs2_is_hard_readonly(osb))) 1741ccd979bdSMark Fasheh return; 1742ccd979bdSMark Fasheh 1743ccd979bdSMark Fasheh printk(KERN_CRIT "File system is now read-only due to the potential " 1744ccd979bdSMark Fasheh "of on-disk corruption. Please run fsck.ocfs2 once the file " 1745ccd979bdSMark Fasheh "system is unmounted.\n"); 1746ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 1747ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 1748ccd979bdSMark Fasheh } 1749ccd979bdSMark Fasheh 1750ccd979bdSMark Fasheh static char error_buf[1024]; 1751ccd979bdSMark Fasheh 1752ccd979bdSMark Fasheh void __ocfs2_error(struct super_block *sb, 1753ccd979bdSMark Fasheh const char *function, 1754ccd979bdSMark Fasheh const char *fmt, ...) 1755ccd979bdSMark Fasheh { 1756ccd979bdSMark Fasheh va_list args; 1757ccd979bdSMark Fasheh 1758ccd979bdSMark Fasheh va_start(args, fmt); 17594a6e617aSAlexey Dobriyan vsnprintf(error_buf, sizeof(error_buf), fmt, args); 1760ccd979bdSMark Fasheh va_end(args); 1761ccd979bdSMark Fasheh 1762ccd979bdSMark Fasheh /* Not using mlog here because we want to show the actual 1763ccd979bdSMark Fasheh * function the error came from. */ 1764ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", 1765ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1766ccd979bdSMark Fasheh 1767ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1768ccd979bdSMark Fasheh } 1769ccd979bdSMark Fasheh 1770ccd979bdSMark Fasheh /* Handle critical errors. This is intentionally more drastic than 1771ccd979bdSMark Fasheh * ocfs2_handle_error, so we only use for things like journal errors, 1772ccd979bdSMark Fasheh * etc. */ 1773ccd979bdSMark Fasheh void __ocfs2_abort(struct super_block* sb, 1774ccd979bdSMark Fasheh const char *function, 1775ccd979bdSMark Fasheh const char *fmt, ...) 1776ccd979bdSMark Fasheh { 1777ccd979bdSMark Fasheh va_list args; 1778ccd979bdSMark Fasheh 1779ccd979bdSMark Fasheh va_start(args, fmt); 17804a6e617aSAlexey Dobriyan vsnprintf(error_buf, sizeof(error_buf), fmt, args); 1781ccd979bdSMark Fasheh va_end(args); 1782ccd979bdSMark Fasheh 1783ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", 1784ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1785ccd979bdSMark Fasheh 1786ccd979bdSMark Fasheh /* We don't have the cluster support yet to go straight to 1787ccd979bdSMark Fasheh * hard readonly in here. Until then, we want to keep 1788ccd979bdSMark Fasheh * ocfs2_abort() so that we can at least mark critical 1789ccd979bdSMark Fasheh * errors. 1790ccd979bdSMark Fasheh * 1791ccd979bdSMark Fasheh * TODO: This should abort the journal and alert other nodes 1792ccd979bdSMark Fasheh * that our slot needs recovery. */ 1793ccd979bdSMark Fasheh 1794ccd979bdSMark Fasheh /* Force a panic(). This stinks, but it's better than letting 1795ccd979bdSMark Fasheh * things continue without having a proper hard readonly 1796ccd979bdSMark Fasheh * here. */ 1797ccd979bdSMark Fasheh OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 1798ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1799ccd979bdSMark Fasheh } 1800ccd979bdSMark Fasheh 1801ccd979bdSMark Fasheh module_init(ocfs2_init); 1802ccd979bdSMark Fasheh module_exit(ocfs2_exit); 1803