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> 42ccd979bdSMark Fasheh 43ccd979bdSMark Fasheh #include <cluster/nodemanager.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 #include "vote.h" 68ccd979bdSMark Fasheh 69ccd979bdSMark Fasheh #include "buffer_head_io.h" 70ccd979bdSMark Fasheh 71ccd979bdSMark Fasheh static kmem_cache_t *ocfs2_inode_cachep = NULL; 72ccd979bdSMark Fasheh 73ccd979bdSMark Fasheh kmem_cache_t *ocfs2_lock_cache = NULL; 74ccd979bdSMark Fasheh 75ccd979bdSMark Fasheh /* OCFS2 needs to schedule several differnt types of work which 76ccd979bdSMark Fasheh * require cluster locking, disk I/O, recovery waits, etc. Since these 77ccd979bdSMark Fasheh * types of work tend to be heavy we avoid using the kernel events 78ccd979bdSMark Fasheh * workqueue and schedule on our own. */ 79ccd979bdSMark Fasheh struct workqueue_struct *ocfs2_wq = NULL; 80ccd979bdSMark Fasheh 81ccd979bdSMark Fasheh static struct dentry *ocfs2_debugfs_root = NULL; 82ccd979bdSMark Fasheh 83ccd979bdSMark Fasheh MODULE_AUTHOR("Oracle"); 84ccd979bdSMark Fasheh MODULE_LICENSE("GPL"); 85ccd979bdSMark Fasheh 86ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, char *options, 87ccd979bdSMark Fasheh unsigned long *mount_opt, int is_remount); 88ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb); 89ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb); 90ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data); 91ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); 92ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void); 93ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void); 94ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb); 95ccd979bdSMark Fasheh 96726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); 97ccd979bdSMark Fasheh 98ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait); 99ccd979bdSMark Fasheh 100ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); 101ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); 102ccd979bdSMark Fasheh static int ocfs2_release_system_inodes(struct ocfs2_super *osb); 103ccd979bdSMark Fasheh static int ocfs2_fill_local_node_info(struct ocfs2_super *osb); 104ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb); 105ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 106ccd979bdSMark Fasheh struct buffer_head *bh, 107ccd979bdSMark Fasheh u32 sectsize); 108ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 109ccd979bdSMark Fasheh struct buffer_head *bh, 110ccd979bdSMark Fasheh int sector_size); 111ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 112ccd979bdSMark Fasheh struct buffer_head **bh, 113ccd979bdSMark Fasheh int block, 114ccd979bdSMark Fasheh int sect_size); 115ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb); 116ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb); 117ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode); 118ccd979bdSMark Fasheh 119ccd979bdSMark Fasheh static unsigned long long ocfs2_max_file_offset(unsigned int blockshift); 120ccd979bdSMark Fasheh 121ccd979bdSMark Fasheh static struct super_operations ocfs2_sops = { 122ccd979bdSMark Fasheh .statfs = ocfs2_statfs, 123ccd979bdSMark Fasheh .alloc_inode = ocfs2_alloc_inode, 124ccd979bdSMark Fasheh .destroy_inode = ocfs2_destroy_inode, 125ccd979bdSMark Fasheh .drop_inode = ocfs2_drop_inode, 126ccd979bdSMark Fasheh .clear_inode = ocfs2_clear_inode, 127ccd979bdSMark Fasheh .delete_inode = ocfs2_delete_inode, 128ccd979bdSMark Fasheh .sync_fs = ocfs2_sync_fs, 129ccd979bdSMark Fasheh .write_super = ocfs2_write_super, 130ccd979bdSMark Fasheh .put_super = ocfs2_put_super, 131ccd979bdSMark Fasheh .remount_fs = ocfs2_remount, 132ccd979bdSMark Fasheh }; 133ccd979bdSMark Fasheh 134ccd979bdSMark Fasheh enum { 135ccd979bdSMark Fasheh Opt_barrier, 136ccd979bdSMark Fasheh Opt_err_panic, 137ccd979bdSMark Fasheh Opt_err_ro, 138ccd979bdSMark Fasheh Opt_intr, 139ccd979bdSMark Fasheh Opt_nointr, 140ccd979bdSMark Fasheh Opt_hb_none, 141ccd979bdSMark Fasheh Opt_hb_local, 142ccd979bdSMark Fasheh Opt_data_ordered, 143ccd979bdSMark Fasheh Opt_data_writeback, 144ccd979bdSMark Fasheh Opt_err, 145ccd979bdSMark Fasheh }; 146ccd979bdSMark Fasheh 147ccd979bdSMark Fasheh static match_table_t tokens = { 148ccd979bdSMark Fasheh {Opt_barrier, "barrier=%u"}, 149ccd979bdSMark Fasheh {Opt_err_panic, "errors=panic"}, 150ccd979bdSMark Fasheh {Opt_err_ro, "errors=remount-ro"}, 151ccd979bdSMark Fasheh {Opt_intr, "intr"}, 152ccd979bdSMark Fasheh {Opt_nointr, "nointr"}, 153ccd979bdSMark Fasheh {Opt_hb_none, OCFS2_HB_NONE}, 154ccd979bdSMark Fasheh {Opt_hb_local, OCFS2_HB_LOCAL}, 155ccd979bdSMark Fasheh {Opt_data_ordered, "data=ordered"}, 156ccd979bdSMark Fasheh {Opt_data_writeback, "data=writeback"}, 157ccd979bdSMark Fasheh {Opt_err, NULL} 158ccd979bdSMark Fasheh }; 159ccd979bdSMark Fasheh 160ccd979bdSMark Fasheh /* 161ccd979bdSMark Fasheh * write_super and sync_fs ripped right out of ext3. 162ccd979bdSMark Fasheh */ 163ccd979bdSMark Fasheh static void ocfs2_write_super(struct super_block *sb) 164ccd979bdSMark Fasheh { 1657892f2f4SIngo Molnar if (mutex_trylock(&sb->s_lock) != 0) 166ccd979bdSMark Fasheh BUG(); 167ccd979bdSMark Fasheh sb->s_dirt = 0; 168ccd979bdSMark Fasheh } 169ccd979bdSMark Fasheh 170ccd979bdSMark Fasheh static int ocfs2_sync_fs(struct super_block *sb, int wait) 171ccd979bdSMark Fasheh { 172ccd979bdSMark Fasheh int status = 0; 173ccd979bdSMark Fasheh tid_t target; 174ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 175ccd979bdSMark Fasheh 176ccd979bdSMark Fasheh sb->s_dirt = 0; 177ccd979bdSMark Fasheh 178ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 179ccd979bdSMark Fasheh return -EROFS; 180ccd979bdSMark Fasheh 181ccd979bdSMark Fasheh if (wait) { 182ccd979bdSMark Fasheh status = ocfs2_flush_truncate_log(osb); 183ccd979bdSMark Fasheh if (status < 0) 184ccd979bdSMark Fasheh mlog_errno(status); 185ccd979bdSMark Fasheh } else { 186ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 187ccd979bdSMark Fasheh } 188ccd979bdSMark Fasheh 189ccd979bdSMark Fasheh if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { 190ccd979bdSMark Fasheh if (wait) 191ccd979bdSMark Fasheh log_wait_commit(OCFS2_SB(sb)->journal->j_journal, 192ccd979bdSMark Fasheh target); 193ccd979bdSMark Fasheh } 194ccd979bdSMark Fasheh return 0; 195ccd979bdSMark Fasheh } 196ccd979bdSMark Fasheh 197ccd979bdSMark Fasheh static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) 198ccd979bdSMark Fasheh { 199ccd979bdSMark Fasheh struct inode *new = NULL; 200ccd979bdSMark Fasheh int status = 0; 201ccd979bdSMark Fasheh int i; 202ccd979bdSMark Fasheh 203ccd979bdSMark Fasheh mlog_entry_void(); 204ccd979bdSMark Fasheh 205ccd979bdSMark Fasheh new = ocfs2_iget(osb, osb->root_blkno); 206ccd979bdSMark Fasheh if (IS_ERR(new)) { 207ccd979bdSMark Fasheh status = PTR_ERR(new); 208ccd979bdSMark Fasheh mlog_errno(status); 209ccd979bdSMark Fasheh goto bail; 210ccd979bdSMark Fasheh } 211ccd979bdSMark Fasheh osb->root_inode = new; 212ccd979bdSMark Fasheh 213ccd979bdSMark Fasheh new = ocfs2_iget(osb, osb->system_dir_blkno); 214ccd979bdSMark Fasheh if (IS_ERR(new)) { 215ccd979bdSMark Fasheh status = PTR_ERR(new); 216ccd979bdSMark Fasheh mlog_errno(status); 217ccd979bdSMark Fasheh goto bail; 218ccd979bdSMark Fasheh } 219ccd979bdSMark Fasheh osb->sys_root_inode = new; 220ccd979bdSMark Fasheh 221ccd979bdSMark Fasheh for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; 222ccd979bdSMark Fasheh i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { 223ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 224ccd979bdSMark Fasheh if (!new) { 225ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 226ccd979bdSMark Fasheh status = -EINVAL; 227ccd979bdSMark Fasheh mlog_errno(status); 228ccd979bdSMark Fasheh /* FIXME: Should ERROR_RO_FS */ 229ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to load system inode %d, " 230ccd979bdSMark Fasheh "possibly corrupt fs?", i); 231ccd979bdSMark Fasheh goto bail; 232ccd979bdSMark Fasheh } 233ccd979bdSMark Fasheh // the array now has one ref, so drop this one 234ccd979bdSMark Fasheh iput(new); 235ccd979bdSMark Fasheh } 236ccd979bdSMark Fasheh 237ccd979bdSMark Fasheh bail: 238ccd979bdSMark Fasheh mlog_exit(status); 239ccd979bdSMark Fasheh return status; 240ccd979bdSMark Fasheh } 241ccd979bdSMark Fasheh 242ccd979bdSMark Fasheh static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) 243ccd979bdSMark Fasheh { 244ccd979bdSMark Fasheh struct inode *new = NULL; 245ccd979bdSMark Fasheh int status = 0; 246ccd979bdSMark Fasheh int i; 247ccd979bdSMark Fasheh 248ccd979bdSMark Fasheh mlog_entry_void(); 249ccd979bdSMark Fasheh 250ccd979bdSMark Fasheh for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; 251ccd979bdSMark Fasheh i < NUM_SYSTEM_INODES; 252ccd979bdSMark Fasheh i++) { 253ccd979bdSMark Fasheh new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); 254ccd979bdSMark Fasheh if (!new) { 255ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 256ccd979bdSMark Fasheh status = -EINVAL; 257ccd979bdSMark Fasheh mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", 258ccd979bdSMark Fasheh status, i, osb->slot_num); 259ccd979bdSMark Fasheh goto bail; 260ccd979bdSMark Fasheh } 261ccd979bdSMark Fasheh /* the array now has one ref, so drop this one */ 262ccd979bdSMark Fasheh iput(new); 263ccd979bdSMark Fasheh } 264ccd979bdSMark Fasheh 265ccd979bdSMark Fasheh bail: 266ccd979bdSMark Fasheh mlog_exit(status); 267ccd979bdSMark Fasheh return status; 268ccd979bdSMark Fasheh } 269ccd979bdSMark Fasheh 270ccd979bdSMark Fasheh static int ocfs2_release_system_inodes(struct ocfs2_super *osb) 271ccd979bdSMark Fasheh { 272ccd979bdSMark Fasheh int status = 0, i; 273ccd979bdSMark Fasheh struct inode *inode; 274ccd979bdSMark Fasheh 275ccd979bdSMark Fasheh mlog_entry_void(); 276ccd979bdSMark Fasheh 277ccd979bdSMark Fasheh for (i = 0; i < NUM_SYSTEM_INODES; i++) { 278ccd979bdSMark Fasheh inode = osb->system_inodes[i]; 279ccd979bdSMark Fasheh if (inode) { 280ccd979bdSMark Fasheh iput(inode); 281ccd979bdSMark Fasheh osb->system_inodes[i] = NULL; 282ccd979bdSMark Fasheh } 283ccd979bdSMark Fasheh } 284ccd979bdSMark Fasheh 285ccd979bdSMark Fasheh inode = osb->sys_root_inode; 286ccd979bdSMark Fasheh if (inode) { 287ccd979bdSMark Fasheh iput(inode); 288ccd979bdSMark Fasheh osb->sys_root_inode = NULL; 289ccd979bdSMark Fasheh } 290ccd979bdSMark Fasheh 291ccd979bdSMark Fasheh inode = osb->root_inode; 292ccd979bdSMark Fasheh if (inode) { 293ccd979bdSMark Fasheh iput(inode); 294ccd979bdSMark Fasheh osb->root_inode = NULL; 295ccd979bdSMark Fasheh } 296ccd979bdSMark Fasheh 297ccd979bdSMark Fasheh mlog_exit(status); 298ccd979bdSMark Fasheh return status; 299ccd979bdSMark Fasheh } 300ccd979bdSMark Fasheh 301ccd979bdSMark Fasheh /* We're allocating fs objects, use GFP_NOFS */ 302ccd979bdSMark Fasheh static struct inode *ocfs2_alloc_inode(struct super_block *sb) 303ccd979bdSMark Fasheh { 304ccd979bdSMark Fasheh struct ocfs2_inode_info *oi; 305ccd979bdSMark Fasheh 306ccd979bdSMark Fasheh oi = kmem_cache_alloc(ocfs2_inode_cachep, SLAB_NOFS); 307ccd979bdSMark Fasheh if (!oi) 308ccd979bdSMark Fasheh return NULL; 309ccd979bdSMark Fasheh 310ccd979bdSMark Fasheh return &oi->vfs_inode; 311ccd979bdSMark Fasheh } 312ccd979bdSMark Fasheh 313ccd979bdSMark Fasheh static void ocfs2_destroy_inode(struct inode *inode) 314ccd979bdSMark Fasheh { 315ccd979bdSMark Fasheh kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); 316ccd979bdSMark Fasheh } 317ccd979bdSMark Fasheh 318ccd979bdSMark Fasheh /* From xfs_super.c:xfs_max_file_offset 319ccd979bdSMark Fasheh * Copyright (c) 2000-2004 Silicon Graphics, Inc. 320ccd979bdSMark Fasheh */ 321ccd979bdSMark Fasheh static unsigned long long ocfs2_max_file_offset(unsigned int blockshift) 322ccd979bdSMark Fasheh { 323ccd979bdSMark Fasheh unsigned int pagefactor = 1; 324ccd979bdSMark Fasheh unsigned int bitshift = BITS_PER_LONG - 1; 325ccd979bdSMark Fasheh 326ccd979bdSMark Fasheh /* Figure out maximum filesize, on Linux this can depend on 327ccd979bdSMark Fasheh * the filesystem blocksize (on 32 bit platforms). 328ccd979bdSMark Fasheh * __block_prepare_write does this in an [unsigned] long... 329ccd979bdSMark Fasheh * page->index << (PAGE_CACHE_SHIFT - bbits) 330ccd979bdSMark Fasheh * So, for page sized blocks (4K on 32 bit platforms), 331ccd979bdSMark Fasheh * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is 332ccd979bdSMark Fasheh * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) 333ccd979bdSMark Fasheh * but for smaller blocksizes it is less (bbits = log2 bsize). 334ccd979bdSMark Fasheh * Note1: get_block_t takes a long (implicit cast from above) 335ccd979bdSMark Fasheh * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch 336ccd979bdSMark Fasheh * can optionally convert the [unsigned] long from above into 337ccd979bdSMark Fasheh * an [unsigned] long long. 338ccd979bdSMark Fasheh */ 339ccd979bdSMark Fasheh 340ccd979bdSMark Fasheh #if BITS_PER_LONG == 32 341ccd979bdSMark Fasheh # if defined(CONFIG_LBD) 342ccd979bdSMark Fasheh BUG_ON(sizeof(sector_t) != 8); 343ccd979bdSMark Fasheh pagefactor = PAGE_CACHE_SIZE; 344ccd979bdSMark Fasheh bitshift = BITS_PER_LONG; 345ccd979bdSMark Fasheh # else 346ccd979bdSMark Fasheh pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); 347ccd979bdSMark Fasheh # endif 348ccd979bdSMark Fasheh #endif 349ccd979bdSMark Fasheh 350ccd979bdSMark Fasheh return (((unsigned long long)pagefactor) << bitshift) - 1; 351ccd979bdSMark Fasheh } 352ccd979bdSMark Fasheh 353ccd979bdSMark Fasheh static int ocfs2_remount(struct super_block *sb, int *flags, char *data) 354ccd979bdSMark Fasheh { 355ccd979bdSMark Fasheh int incompat_features; 356ccd979bdSMark Fasheh int ret = 0; 357ccd979bdSMark Fasheh unsigned long parsed_options; 358ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 359ccd979bdSMark Fasheh 360ccd979bdSMark Fasheh if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { 361ccd979bdSMark Fasheh ret = -EINVAL; 362ccd979bdSMark Fasheh goto out; 363ccd979bdSMark Fasheh } 364ccd979bdSMark Fasheh 365ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != 366ccd979bdSMark Fasheh (parsed_options & OCFS2_MOUNT_HB_LOCAL)) { 367ccd979bdSMark Fasheh ret = -EINVAL; 368ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); 369ccd979bdSMark Fasheh goto out; 370ccd979bdSMark Fasheh } 371ccd979bdSMark Fasheh 372ccd979bdSMark Fasheh if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != 373ccd979bdSMark Fasheh (parsed_options & OCFS2_MOUNT_DATA_WRITEBACK)) { 374ccd979bdSMark Fasheh ret = -EINVAL; 375ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot change data mode on remount\n"); 376ccd979bdSMark Fasheh goto out; 377ccd979bdSMark Fasheh } 378ccd979bdSMark Fasheh 379ccd979bdSMark Fasheh /* We're going to/from readonly mode. */ 380ccd979bdSMark Fasheh if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { 381ccd979bdSMark Fasheh /* Lock here so the check of HARD_RO and the potential 382ccd979bdSMark Fasheh * setting of SOFT_RO is atomic. */ 383ccd979bdSMark Fasheh spin_lock(&osb->osb_lock); 384ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_HARD_RO) { 385ccd979bdSMark Fasheh mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); 386ccd979bdSMark Fasheh ret = -EROFS; 387ccd979bdSMark Fasheh goto unlock_osb; 388ccd979bdSMark Fasheh } 389ccd979bdSMark Fasheh 390ccd979bdSMark Fasheh if (*flags & MS_RDONLY) { 391ccd979bdSMark Fasheh mlog(0, "Going to ro mode.\n"); 392ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 393ccd979bdSMark Fasheh osb->osb_flags |= OCFS2_OSB_SOFT_RO; 394ccd979bdSMark Fasheh } else { 395ccd979bdSMark Fasheh mlog(0, "Making ro filesystem writeable.\n"); 396ccd979bdSMark Fasheh 397ccd979bdSMark Fasheh if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { 398ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR " 399ccd979bdSMark Fasheh "filesystem due to previous errors.\n"); 400ccd979bdSMark Fasheh ret = -EROFS; 401ccd979bdSMark Fasheh goto unlock_osb; 402ccd979bdSMark Fasheh } 403ccd979bdSMark Fasheh incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); 404ccd979bdSMark Fasheh if (incompat_features) { 405ccd979bdSMark Fasheh mlog(ML_ERROR, "Cannot remount RDWR because " 406ccd979bdSMark Fasheh "of unsupported optional features " 407ccd979bdSMark Fasheh "(%x).\n", incompat_features); 408ccd979bdSMark Fasheh ret = -EINVAL; 409ccd979bdSMark Fasheh goto unlock_osb; 410ccd979bdSMark Fasheh } 411ccd979bdSMark Fasheh sb->s_flags &= ~MS_RDONLY; 412ccd979bdSMark Fasheh osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; 413ccd979bdSMark Fasheh } 414ccd979bdSMark Fasheh unlock_osb: 415ccd979bdSMark Fasheh spin_unlock(&osb->osb_lock); 416ccd979bdSMark Fasheh } 417ccd979bdSMark Fasheh 418ccd979bdSMark Fasheh if (!ret) { 419ccd979bdSMark Fasheh if (!ocfs2_is_hard_readonly(osb)) 420ccd979bdSMark Fasheh ocfs2_set_journal_params(osb); 421ccd979bdSMark Fasheh 422ccd979bdSMark Fasheh /* Only save off the new mount options in case of a successful 423ccd979bdSMark Fasheh * remount. */ 424ccd979bdSMark Fasheh osb->s_mount_opt = parsed_options; 425ccd979bdSMark Fasheh } 426ccd979bdSMark Fasheh out: 427ccd979bdSMark Fasheh return ret; 428ccd979bdSMark Fasheh } 429ccd979bdSMark Fasheh 430ccd979bdSMark Fasheh static int ocfs2_sb_probe(struct super_block *sb, 431ccd979bdSMark Fasheh struct buffer_head **bh, 432ccd979bdSMark Fasheh int *sector_size) 433ccd979bdSMark Fasheh { 434ccd979bdSMark Fasheh int status = 0, tmpstat; 435ccd979bdSMark Fasheh struct ocfs1_vol_disk_hdr *hdr; 436ccd979bdSMark Fasheh struct ocfs2_dinode *di; 437ccd979bdSMark Fasheh int blksize; 438ccd979bdSMark Fasheh 439ccd979bdSMark Fasheh *bh = NULL; 440ccd979bdSMark Fasheh 441ccd979bdSMark Fasheh /* may be > 512 */ 442ccd979bdSMark Fasheh *sector_size = bdev_hardsect_size(sb->s_bdev); 443ccd979bdSMark Fasheh if (*sector_size > OCFS2_MAX_BLOCKSIZE) { 444ccd979bdSMark Fasheh mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", 445ccd979bdSMark Fasheh *sector_size, OCFS2_MAX_BLOCKSIZE); 446ccd979bdSMark Fasheh status = -EINVAL; 447ccd979bdSMark Fasheh goto bail; 448ccd979bdSMark Fasheh } 449ccd979bdSMark Fasheh 450ccd979bdSMark Fasheh /* Can this really happen? */ 451ccd979bdSMark Fasheh if (*sector_size < OCFS2_MIN_BLOCKSIZE) 452ccd979bdSMark Fasheh *sector_size = OCFS2_MIN_BLOCKSIZE; 453ccd979bdSMark Fasheh 454ccd979bdSMark Fasheh /* check block zero for old format */ 455ccd979bdSMark Fasheh status = ocfs2_get_sector(sb, bh, 0, *sector_size); 456ccd979bdSMark Fasheh if (status < 0) { 457ccd979bdSMark Fasheh mlog_errno(status); 458ccd979bdSMark Fasheh goto bail; 459ccd979bdSMark Fasheh } 460ccd979bdSMark Fasheh hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; 461ccd979bdSMark Fasheh if (hdr->major_version == OCFS1_MAJOR_VERSION) { 462ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible version: %u.%u\n", 463ccd979bdSMark Fasheh hdr->major_version, hdr->minor_version); 464ccd979bdSMark Fasheh status = -EINVAL; 465ccd979bdSMark Fasheh } 466ccd979bdSMark Fasheh if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, 467ccd979bdSMark Fasheh strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { 468ccd979bdSMark Fasheh mlog(ML_ERROR, "incompatible volume signature: %8s\n", 469ccd979bdSMark Fasheh hdr->signature); 470ccd979bdSMark Fasheh status = -EINVAL; 471ccd979bdSMark Fasheh } 472ccd979bdSMark Fasheh brelse(*bh); 473ccd979bdSMark Fasheh *bh = NULL; 474ccd979bdSMark Fasheh if (status < 0) { 475ccd979bdSMark Fasheh mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " 476ccd979bdSMark Fasheh "upgraded before mounting with ocfs v2\n"); 477ccd979bdSMark Fasheh goto bail; 478ccd979bdSMark Fasheh } 479ccd979bdSMark Fasheh 480ccd979bdSMark Fasheh /* 481ccd979bdSMark Fasheh * Now check at magic offset for 512, 1024, 2048, 4096 482ccd979bdSMark Fasheh * blocksizes. 4096 is the maximum blocksize because it is 483ccd979bdSMark Fasheh * the minimum clustersize. 484ccd979bdSMark Fasheh */ 485ccd979bdSMark Fasheh status = -EINVAL; 486ccd979bdSMark Fasheh for (blksize = *sector_size; 487ccd979bdSMark Fasheh blksize <= OCFS2_MAX_BLOCKSIZE; 488ccd979bdSMark Fasheh blksize <<= 1) { 489ccd979bdSMark Fasheh tmpstat = ocfs2_get_sector(sb, bh, 490ccd979bdSMark Fasheh OCFS2_SUPER_BLOCK_BLKNO, 491ccd979bdSMark Fasheh blksize); 492ccd979bdSMark Fasheh if (tmpstat < 0) { 493ccd979bdSMark Fasheh status = tmpstat; 494ccd979bdSMark Fasheh mlog_errno(status); 495ccd979bdSMark Fasheh goto bail; 496ccd979bdSMark Fasheh } 497ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) (*bh)->b_data; 498ccd979bdSMark Fasheh status = ocfs2_verify_volume(di, *bh, blksize); 499ccd979bdSMark Fasheh if (status >= 0) 500ccd979bdSMark Fasheh goto bail; 501ccd979bdSMark Fasheh brelse(*bh); 502ccd979bdSMark Fasheh *bh = NULL; 503ccd979bdSMark Fasheh if (status != -EAGAIN) 504ccd979bdSMark Fasheh break; 505ccd979bdSMark Fasheh } 506ccd979bdSMark Fasheh 507ccd979bdSMark Fasheh bail: 508ccd979bdSMark Fasheh return status; 509ccd979bdSMark Fasheh } 510ccd979bdSMark Fasheh 511ccd979bdSMark Fasheh static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) 512ccd979bdSMark Fasheh { 513ccd979bdSMark Fasheh struct dentry *root; 514ccd979bdSMark Fasheh int status, sector_size; 515ccd979bdSMark Fasheh unsigned long parsed_opt; 516ccd979bdSMark Fasheh struct inode *inode = NULL; 517ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 518ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 519ccd979bdSMark Fasheh 520ccd979bdSMark Fasheh mlog_entry("%p, %p, %i", sb, data, silent); 521ccd979bdSMark Fasheh 522ccd979bdSMark Fasheh /* for now we only have one cluster/node, make sure we see it 523ccd979bdSMark Fasheh * in the heartbeat universe */ 524ccd979bdSMark Fasheh if (!o2hb_check_local_node_heartbeating()) { 525ccd979bdSMark Fasheh status = -EINVAL; 526ccd979bdSMark Fasheh goto read_super_error; 527ccd979bdSMark Fasheh } 528ccd979bdSMark Fasheh 529ccd979bdSMark Fasheh /* probe for superblock */ 530ccd979bdSMark Fasheh status = ocfs2_sb_probe(sb, &bh, §or_size); 531ccd979bdSMark Fasheh if (status < 0) { 532ccd979bdSMark Fasheh mlog(ML_ERROR, "superblock probe failed!\n"); 533ccd979bdSMark Fasheh goto read_super_error; 534ccd979bdSMark Fasheh } 535ccd979bdSMark Fasheh 536ccd979bdSMark Fasheh status = ocfs2_initialize_super(sb, bh, sector_size); 537ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 538ccd979bdSMark Fasheh if (status < 0) { 539ccd979bdSMark Fasheh mlog_errno(status); 540ccd979bdSMark Fasheh goto read_super_error; 541ccd979bdSMark Fasheh } 542ccd979bdSMark Fasheh brelse(bh); 543ccd979bdSMark Fasheh bh = NULL; 544ccd979bdSMark Fasheh 545ccd979bdSMark Fasheh if (!ocfs2_parse_options(sb, data, &parsed_opt, 0)) { 546ccd979bdSMark Fasheh status = -EINVAL; 547ccd979bdSMark Fasheh goto read_super_error; 548ccd979bdSMark Fasheh } 549ccd979bdSMark Fasheh osb->s_mount_opt = parsed_opt; 550ccd979bdSMark Fasheh 551ccd979bdSMark Fasheh sb->s_magic = OCFS2_SUPER_MAGIC; 552ccd979bdSMark Fasheh 553ccd979bdSMark Fasheh /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, 554ccd979bdSMark Fasheh * heartbeat=none */ 555ccd979bdSMark Fasheh if (bdev_read_only(sb->s_bdev)) { 556ccd979bdSMark Fasheh if (!(sb->s_flags & MS_RDONLY)) { 557ccd979bdSMark Fasheh status = -EACCES; 558ccd979bdSMark Fasheh mlog(ML_ERROR, "Readonly device detected but readonly " 559ccd979bdSMark Fasheh "mount was not specified.\n"); 560ccd979bdSMark Fasheh goto read_super_error; 561ccd979bdSMark Fasheh } 562ccd979bdSMark Fasheh 563ccd979bdSMark Fasheh /* You should not be able to start a local heartbeat 564ccd979bdSMark Fasheh * on a readonly device. */ 565ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { 566ccd979bdSMark Fasheh status = -EROFS; 567ccd979bdSMark Fasheh mlog(ML_ERROR, "Local heartbeat specified on readonly " 568ccd979bdSMark Fasheh "device.\n"); 569ccd979bdSMark Fasheh goto read_super_error; 570ccd979bdSMark Fasheh } 571ccd979bdSMark Fasheh 572ccd979bdSMark Fasheh status = ocfs2_check_journals_nolocks(osb); 573ccd979bdSMark Fasheh if (status < 0) { 574ccd979bdSMark Fasheh if (status == -EROFS) 575ccd979bdSMark Fasheh mlog(ML_ERROR, "Recovery required on readonly " 576ccd979bdSMark Fasheh "file system, but write access is " 577ccd979bdSMark Fasheh "unavailable.\n"); 578ccd979bdSMark Fasheh else 579ccd979bdSMark Fasheh mlog_errno(status); 580ccd979bdSMark Fasheh goto read_super_error; 581ccd979bdSMark Fasheh } 582ccd979bdSMark Fasheh 583ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 1); 584ccd979bdSMark Fasheh 585ccd979bdSMark Fasheh printk(KERN_NOTICE "Readonly device detected. No cluster " 586ccd979bdSMark Fasheh "services will be utilized for this mount. Recovery " 587ccd979bdSMark Fasheh "will be skipped.\n"); 588ccd979bdSMark Fasheh } 589ccd979bdSMark Fasheh 590ccd979bdSMark Fasheh if (!ocfs2_is_hard_readonly(osb)) { 591ccd979bdSMark Fasheh /* If this isn't a hard readonly mount, then we need 592ccd979bdSMark Fasheh * to make sure that heartbeat is in a valid state, 593ccd979bdSMark Fasheh * and that we mark ourselves soft readonly is -oro 594ccd979bdSMark Fasheh * was specified. */ 595ccd979bdSMark Fasheh if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { 596ccd979bdSMark Fasheh mlog(ML_ERROR, "No heartbeat for device (%s)\n", 597ccd979bdSMark Fasheh sb->s_id); 598ccd979bdSMark Fasheh status = -EINVAL; 599ccd979bdSMark Fasheh goto read_super_error; 600ccd979bdSMark Fasheh } 601ccd979bdSMark Fasheh 602ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY) 603ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 604ccd979bdSMark Fasheh } 605ccd979bdSMark Fasheh 606ccd979bdSMark Fasheh osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, 607ccd979bdSMark Fasheh ocfs2_debugfs_root); 608ccd979bdSMark Fasheh if (!osb->osb_debug_root) { 609ccd979bdSMark Fasheh status = -EINVAL; 610ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); 611ccd979bdSMark Fasheh goto read_super_error; 612ccd979bdSMark Fasheh } 613ccd979bdSMark Fasheh 614ccd979bdSMark Fasheh status = ocfs2_mount_volume(sb); 615ccd979bdSMark Fasheh if (osb->root_inode) 616ccd979bdSMark Fasheh inode = igrab(osb->root_inode); 617ccd979bdSMark Fasheh 618ccd979bdSMark Fasheh if (status < 0) 619ccd979bdSMark Fasheh goto read_super_error; 620ccd979bdSMark Fasheh 621ccd979bdSMark Fasheh if (!inode) { 622ccd979bdSMark Fasheh status = -EIO; 623ccd979bdSMark Fasheh mlog_errno(status); 624ccd979bdSMark Fasheh goto read_super_error; 625ccd979bdSMark Fasheh } 626ccd979bdSMark Fasheh 627ccd979bdSMark Fasheh root = d_alloc_root(inode); 628ccd979bdSMark Fasheh if (!root) { 629ccd979bdSMark Fasheh status = -ENOMEM; 630ccd979bdSMark Fasheh mlog_errno(status); 631ccd979bdSMark Fasheh goto read_super_error; 632ccd979bdSMark Fasheh } 633ccd979bdSMark Fasheh 634ccd979bdSMark Fasheh sb->s_root = root; 635ccd979bdSMark Fasheh 636ccd979bdSMark Fasheh ocfs2_complete_mount_recovery(osb); 637ccd979bdSMark Fasheh 638781ee3e2SSunil Mushran printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %d, slot %d) " 639781ee3e2SSunil Mushran "with %s data mode.\n", 640781ee3e2SSunil Mushran osb->dev_str, osb->node_num, osb->slot_num, 641ccd979bdSMark Fasheh osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : 642ccd979bdSMark Fasheh "ordered"); 643ccd979bdSMark Fasheh 644ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_MOUNTED); 645ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 646ccd979bdSMark Fasheh 647ccd979bdSMark Fasheh mlog_exit(status); 648ccd979bdSMark Fasheh return status; 649ccd979bdSMark Fasheh 650ccd979bdSMark Fasheh read_super_error: 651ccd979bdSMark Fasheh if (bh != NULL) 652ccd979bdSMark Fasheh brelse(bh); 653ccd979bdSMark Fasheh 654ccd979bdSMark Fasheh if (inode) 655ccd979bdSMark Fasheh iput(inode); 656ccd979bdSMark Fasheh 657ccd979bdSMark Fasheh if (osb) { 658ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISABLED); 659ccd979bdSMark Fasheh wake_up(&osb->osb_mount_event); 660ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 1); 661ccd979bdSMark Fasheh } 662ccd979bdSMark Fasheh 663ccd979bdSMark Fasheh mlog_exit(status); 664ccd979bdSMark Fasheh return status; 665ccd979bdSMark Fasheh } 666ccd979bdSMark Fasheh 667454e2398SDavid Howells static int ocfs2_get_sb(struct file_system_type *fs_type, 668ccd979bdSMark Fasheh int flags, 669ccd979bdSMark Fasheh const char *dev_name, 670454e2398SDavid Howells void *data, 671454e2398SDavid Howells struct vfsmount *mnt) 672ccd979bdSMark Fasheh { 673454e2398SDavid Howells return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, 674454e2398SDavid Howells mnt); 675ccd979bdSMark Fasheh } 676ccd979bdSMark Fasheh 677ccd979bdSMark Fasheh static struct file_system_type ocfs2_fs_type = { 678ccd979bdSMark Fasheh .owner = THIS_MODULE, 679ccd979bdSMark Fasheh .name = "ocfs2", 680ccd979bdSMark Fasheh .get_sb = ocfs2_get_sb, /* is this called when we mount 681ccd979bdSMark Fasheh * the fs? */ 682ccd979bdSMark Fasheh .kill_sb = kill_block_super, /* set to the generic one 683ccd979bdSMark Fasheh * right now, but do we 684ccd979bdSMark Fasheh * need to change that? */ 6851ba9da2fSMark Fasheh .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, 686ccd979bdSMark Fasheh .next = NULL 687ccd979bdSMark Fasheh }; 688ccd979bdSMark Fasheh 689ccd979bdSMark Fasheh static int ocfs2_parse_options(struct super_block *sb, 690ccd979bdSMark Fasheh char *options, 691ccd979bdSMark Fasheh unsigned long *mount_opt, 692ccd979bdSMark Fasheh int is_remount) 693ccd979bdSMark Fasheh { 694ccd979bdSMark Fasheh int status; 695ccd979bdSMark Fasheh char *p; 696ccd979bdSMark Fasheh 697ccd979bdSMark Fasheh mlog_entry("remount: %d, options: \"%s\"\n", is_remount, 698ccd979bdSMark Fasheh options ? options : "(none)"); 699ccd979bdSMark Fasheh 700ccd979bdSMark Fasheh *mount_opt = 0; 701ccd979bdSMark Fasheh 702ccd979bdSMark Fasheh if (!options) { 703ccd979bdSMark Fasheh status = 1; 704ccd979bdSMark Fasheh goto bail; 705ccd979bdSMark Fasheh } 706ccd979bdSMark Fasheh 707ccd979bdSMark Fasheh while ((p = strsep(&options, ",")) != NULL) { 708ccd979bdSMark Fasheh int token, option; 709ccd979bdSMark Fasheh substring_t args[MAX_OPT_ARGS]; 710ccd979bdSMark Fasheh 711ccd979bdSMark Fasheh if (!*p) 712ccd979bdSMark Fasheh continue; 713ccd979bdSMark Fasheh 714ccd979bdSMark Fasheh token = match_token(p, tokens, args); 715ccd979bdSMark Fasheh switch (token) { 716ccd979bdSMark Fasheh case Opt_hb_local: 717ccd979bdSMark Fasheh *mount_opt |= OCFS2_MOUNT_HB_LOCAL; 718ccd979bdSMark Fasheh break; 719ccd979bdSMark Fasheh case Opt_hb_none: 720ccd979bdSMark Fasheh *mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; 721ccd979bdSMark Fasheh break; 722ccd979bdSMark Fasheh case Opt_barrier: 723ccd979bdSMark Fasheh if (match_int(&args[0], &option)) { 724ccd979bdSMark Fasheh status = 0; 725ccd979bdSMark Fasheh goto bail; 726ccd979bdSMark Fasheh } 727ccd979bdSMark Fasheh if (option) 728ccd979bdSMark Fasheh *mount_opt |= OCFS2_MOUNT_BARRIER; 729ccd979bdSMark Fasheh else 730ccd979bdSMark Fasheh *mount_opt &= ~OCFS2_MOUNT_BARRIER; 731ccd979bdSMark Fasheh break; 732ccd979bdSMark Fasheh case Opt_intr: 733ccd979bdSMark Fasheh *mount_opt &= ~OCFS2_MOUNT_NOINTR; 734ccd979bdSMark Fasheh break; 735ccd979bdSMark Fasheh case Opt_nointr: 736ccd979bdSMark Fasheh *mount_opt |= OCFS2_MOUNT_NOINTR; 737ccd979bdSMark Fasheh break; 738ccd979bdSMark Fasheh case Opt_err_panic: 739ccd979bdSMark Fasheh *mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 740ccd979bdSMark Fasheh break; 741ccd979bdSMark Fasheh case Opt_err_ro: 742ccd979bdSMark Fasheh *mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; 743ccd979bdSMark Fasheh break; 744ccd979bdSMark Fasheh case Opt_data_ordered: 745ccd979bdSMark Fasheh *mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; 746ccd979bdSMark Fasheh break; 747ccd979bdSMark Fasheh case Opt_data_writeback: 748ccd979bdSMark Fasheh *mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; 749ccd979bdSMark Fasheh break; 750ccd979bdSMark Fasheh default: 751ccd979bdSMark Fasheh mlog(ML_ERROR, 752ccd979bdSMark Fasheh "Unrecognized mount option \"%s\" " 753ccd979bdSMark Fasheh "or missing value\n", p); 754ccd979bdSMark Fasheh status = 0; 755ccd979bdSMark Fasheh goto bail; 756ccd979bdSMark Fasheh } 757ccd979bdSMark Fasheh } 758ccd979bdSMark Fasheh 759ccd979bdSMark Fasheh status = 1; 760ccd979bdSMark Fasheh 761ccd979bdSMark Fasheh bail: 762ccd979bdSMark Fasheh mlog_exit(status); 763ccd979bdSMark Fasheh return status; 764ccd979bdSMark Fasheh } 765ccd979bdSMark Fasheh 766ccd979bdSMark Fasheh static int __init ocfs2_init(void) 767ccd979bdSMark Fasheh { 768ccd979bdSMark Fasheh int status; 769ccd979bdSMark Fasheh 770ccd979bdSMark Fasheh mlog_entry_void(); 771ccd979bdSMark Fasheh 772ccd979bdSMark Fasheh ocfs2_print_version(); 773ccd979bdSMark Fasheh 774ccd979bdSMark Fasheh if (init_ocfs2_extent_maps()) 775ccd979bdSMark Fasheh return -ENOMEM; 776ccd979bdSMark Fasheh 777ccd979bdSMark Fasheh status = init_ocfs2_uptodate_cache(); 778ccd979bdSMark Fasheh if (status < 0) { 779ccd979bdSMark Fasheh mlog_errno(status); 780ccd979bdSMark Fasheh goto leave; 781ccd979bdSMark Fasheh } 782ccd979bdSMark Fasheh 783ccd979bdSMark Fasheh status = ocfs2_initialize_mem_caches(); 784ccd979bdSMark Fasheh if (status < 0) { 785ccd979bdSMark Fasheh mlog_errno(status); 786ccd979bdSMark Fasheh goto leave; 787ccd979bdSMark Fasheh } 788ccd979bdSMark Fasheh 789ccd979bdSMark Fasheh ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); 790ccd979bdSMark Fasheh if (!ocfs2_wq) { 791ccd979bdSMark Fasheh status = -ENOMEM; 792ccd979bdSMark Fasheh goto leave; 793ccd979bdSMark Fasheh } 794ccd979bdSMark Fasheh 795ccd979bdSMark Fasheh ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); 796ccd979bdSMark Fasheh if (!ocfs2_debugfs_root) { 797ccd979bdSMark Fasheh status = -EFAULT; 798ccd979bdSMark Fasheh mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); 799ccd979bdSMark Fasheh } 800ccd979bdSMark Fasheh 801ccd979bdSMark Fasheh leave: 802ccd979bdSMark Fasheh if (status < 0) { 803ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 804ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 805ccd979bdSMark Fasheh exit_ocfs2_extent_maps(); 806ccd979bdSMark Fasheh } 807ccd979bdSMark Fasheh 808ccd979bdSMark Fasheh mlog_exit(status); 809ccd979bdSMark Fasheh 810ccd979bdSMark Fasheh if (status >= 0) { 811ccd979bdSMark Fasheh return register_filesystem(&ocfs2_fs_type); 812ccd979bdSMark Fasheh } else 813ccd979bdSMark Fasheh return -1; 814ccd979bdSMark Fasheh } 815ccd979bdSMark Fasheh 816ccd979bdSMark Fasheh static void __exit ocfs2_exit(void) 817ccd979bdSMark Fasheh { 818ccd979bdSMark Fasheh mlog_entry_void(); 819ccd979bdSMark Fasheh 820ccd979bdSMark Fasheh if (ocfs2_wq) { 821ccd979bdSMark Fasheh flush_workqueue(ocfs2_wq); 822ccd979bdSMark Fasheh destroy_workqueue(ocfs2_wq); 823ccd979bdSMark Fasheh } 824ccd979bdSMark Fasheh 825ccd979bdSMark Fasheh debugfs_remove(ocfs2_debugfs_root); 826ccd979bdSMark Fasheh 827ccd979bdSMark Fasheh ocfs2_free_mem_caches(); 828ccd979bdSMark Fasheh 829ccd979bdSMark Fasheh unregister_filesystem(&ocfs2_fs_type); 830ccd979bdSMark Fasheh 831ccd979bdSMark Fasheh exit_ocfs2_extent_maps(); 832ccd979bdSMark Fasheh 833ccd979bdSMark Fasheh exit_ocfs2_uptodate_cache(); 834ccd979bdSMark Fasheh 835ccd979bdSMark Fasheh mlog_exit_void(); 836ccd979bdSMark Fasheh } 837ccd979bdSMark Fasheh 838ccd979bdSMark Fasheh static void ocfs2_put_super(struct super_block *sb) 839ccd979bdSMark Fasheh { 840ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 841ccd979bdSMark Fasheh 842ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 843ccd979bdSMark Fasheh ocfs2_dismount_volume(sb, 0); 844ccd979bdSMark Fasheh 845ccd979bdSMark Fasheh mlog_exit_void(); 846ccd979bdSMark Fasheh } 847ccd979bdSMark Fasheh 848726c3342SDavid Howells static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 849ccd979bdSMark Fasheh { 850ccd979bdSMark Fasheh struct ocfs2_super *osb; 851ccd979bdSMark Fasheh u32 numbits, freebits; 852ccd979bdSMark Fasheh int status; 853ccd979bdSMark Fasheh struct ocfs2_dinode *bm_lock; 854ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 855ccd979bdSMark Fasheh struct inode *inode = NULL; 856ccd979bdSMark Fasheh 857726c3342SDavid Howells mlog_entry("(%p, %p)\n", dentry->d_sb, buf); 858ccd979bdSMark Fasheh 859726c3342SDavid Howells osb = OCFS2_SB(dentry->d_sb); 860ccd979bdSMark Fasheh 861ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, 862ccd979bdSMark Fasheh GLOBAL_BITMAP_SYSTEM_INODE, 863ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 864ccd979bdSMark Fasheh if (!inode) { 865ccd979bdSMark Fasheh mlog(ML_ERROR, "failed to get bitmap inode\n"); 866ccd979bdSMark Fasheh status = -EIO; 867ccd979bdSMark Fasheh goto bail; 868ccd979bdSMark Fasheh } 869ccd979bdSMark Fasheh 870ccd979bdSMark Fasheh status = ocfs2_meta_lock(inode, NULL, &bh, 0); 871ccd979bdSMark Fasheh if (status < 0) { 872ccd979bdSMark Fasheh mlog_errno(status); 873ccd979bdSMark Fasheh goto bail; 874ccd979bdSMark Fasheh } 875ccd979bdSMark Fasheh 876ccd979bdSMark Fasheh bm_lock = (struct ocfs2_dinode *) bh->b_data; 877ccd979bdSMark Fasheh 878ccd979bdSMark Fasheh numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); 879ccd979bdSMark Fasheh freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); 880ccd979bdSMark Fasheh 881ccd979bdSMark Fasheh buf->f_type = OCFS2_SUPER_MAGIC; 882726c3342SDavid Howells buf->f_bsize = dentry->d_sb->s_blocksize; 883ccd979bdSMark Fasheh buf->f_namelen = OCFS2_MAX_FILENAME_LEN; 884ccd979bdSMark Fasheh buf->f_blocks = ((sector_t) numbits) * 885ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 886ccd979bdSMark Fasheh buf->f_bfree = ((sector_t) freebits) * 887ccd979bdSMark Fasheh (osb->s_clustersize >> osb->sb->s_blocksize_bits); 888ccd979bdSMark Fasheh buf->f_bavail = buf->f_bfree; 889ccd979bdSMark Fasheh buf->f_files = numbits; 890ccd979bdSMark Fasheh buf->f_ffree = freebits; 891ccd979bdSMark Fasheh 892ccd979bdSMark Fasheh brelse(bh); 893ccd979bdSMark Fasheh 894ccd979bdSMark Fasheh ocfs2_meta_unlock(inode, 0); 895ccd979bdSMark Fasheh status = 0; 896ccd979bdSMark Fasheh bail: 897ccd979bdSMark Fasheh if (inode) 898ccd979bdSMark Fasheh iput(inode); 899ccd979bdSMark Fasheh 900ccd979bdSMark Fasheh mlog_exit(status); 901ccd979bdSMark Fasheh 902ccd979bdSMark Fasheh return status; 903ccd979bdSMark Fasheh } 904ccd979bdSMark Fasheh 905ccd979bdSMark Fasheh static void ocfs2_inode_init_once(void *data, 906ccd979bdSMark Fasheh kmem_cache_t *cachep, 907ccd979bdSMark Fasheh unsigned long flags) 908ccd979bdSMark Fasheh { 909ccd979bdSMark Fasheh struct ocfs2_inode_info *oi = data; 910ccd979bdSMark Fasheh 911ccd979bdSMark Fasheh if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == 912ccd979bdSMark Fasheh SLAB_CTOR_CONSTRUCTOR) { 913ccd979bdSMark Fasheh oi->ip_flags = 0; 914ccd979bdSMark Fasheh oi->ip_open_count = 0; 915ccd979bdSMark Fasheh spin_lock_init(&oi->ip_lock); 916ccd979bdSMark Fasheh ocfs2_extent_map_init(&oi->vfs_inode); 917ccd979bdSMark Fasheh INIT_LIST_HEAD(&oi->ip_handle_list); 918ccd979bdSMark Fasheh INIT_LIST_HEAD(&oi->ip_io_markers); 919ccd979bdSMark Fasheh oi->ip_handle = NULL; 920ccd979bdSMark Fasheh oi->ip_created_trans = 0; 921ccd979bdSMark Fasheh oi->ip_last_trans = 0; 922ccd979bdSMark Fasheh oi->ip_dir_start_lookup = 0; 923ccd979bdSMark Fasheh 924ccd979bdSMark Fasheh init_rwsem(&oi->ip_alloc_sem); 925251b6eccSMark Fasheh mutex_init(&oi->ip_io_mutex); 926ccd979bdSMark Fasheh 927ccd979bdSMark Fasheh oi->ip_blkno = 0ULL; 928ccd979bdSMark Fasheh oi->ip_clusters = 0; 929ccd979bdSMark Fasheh 930ccd979bdSMark Fasheh ocfs2_lock_res_init_once(&oi->ip_rw_lockres); 931ccd979bdSMark Fasheh ocfs2_lock_res_init_once(&oi->ip_meta_lockres); 932ccd979bdSMark Fasheh ocfs2_lock_res_init_once(&oi->ip_data_lockres); 933ccd979bdSMark Fasheh 934ccd979bdSMark Fasheh ocfs2_metadata_cache_init(&oi->vfs_inode); 935ccd979bdSMark Fasheh 936ccd979bdSMark Fasheh inode_init_once(&oi->vfs_inode); 937ccd979bdSMark Fasheh } 938ccd979bdSMark Fasheh } 939ccd979bdSMark Fasheh 940ccd979bdSMark Fasheh static int ocfs2_initialize_mem_caches(void) 941ccd979bdSMark Fasheh { 942ccd979bdSMark Fasheh ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", 943ccd979bdSMark Fasheh sizeof(struct ocfs2_inode_info), 944fffb60f9SPaul Jackson 0, 945fffb60f9SPaul Jackson (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| 946fffb60f9SPaul Jackson SLAB_MEM_SPREAD), 947ccd979bdSMark Fasheh ocfs2_inode_init_once, NULL); 948ccd979bdSMark Fasheh if (!ocfs2_inode_cachep) 949ccd979bdSMark Fasheh return -ENOMEM; 950ccd979bdSMark Fasheh 951ccd979bdSMark Fasheh ocfs2_lock_cache = kmem_cache_create("ocfs2_lock", 952ccd979bdSMark Fasheh sizeof(struct ocfs2_journal_lock), 953ccd979bdSMark Fasheh 0, 954ac2b898cSChristoph Lameter SLAB_HWCACHE_ALIGN, 955ccd979bdSMark Fasheh NULL, NULL); 956ccd979bdSMark Fasheh if (!ocfs2_lock_cache) 957ccd979bdSMark Fasheh return -ENOMEM; 958ccd979bdSMark Fasheh 959ccd979bdSMark Fasheh return 0; 960ccd979bdSMark Fasheh } 961ccd979bdSMark Fasheh 962ccd979bdSMark Fasheh static void ocfs2_free_mem_caches(void) 963ccd979bdSMark Fasheh { 964ccd979bdSMark Fasheh if (ocfs2_inode_cachep) 965ccd979bdSMark Fasheh kmem_cache_destroy(ocfs2_inode_cachep); 966ccd979bdSMark Fasheh if (ocfs2_lock_cache) 967ccd979bdSMark Fasheh kmem_cache_destroy(ocfs2_lock_cache); 968ccd979bdSMark Fasheh 969ccd979bdSMark Fasheh ocfs2_inode_cachep = NULL; 970ccd979bdSMark Fasheh ocfs2_lock_cache = NULL; 971ccd979bdSMark Fasheh } 972ccd979bdSMark Fasheh 973ccd979bdSMark Fasheh static int ocfs2_get_sector(struct super_block *sb, 974ccd979bdSMark Fasheh struct buffer_head **bh, 975ccd979bdSMark Fasheh int block, 976ccd979bdSMark Fasheh int sect_size) 977ccd979bdSMark Fasheh { 978ccd979bdSMark Fasheh if (!sb_set_blocksize(sb, sect_size)) { 979ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to set blocksize\n"); 980ccd979bdSMark Fasheh return -EIO; 981ccd979bdSMark Fasheh } 982ccd979bdSMark Fasheh 983ccd979bdSMark Fasheh *bh = sb_getblk(sb, block); 984ccd979bdSMark Fasheh if (!*bh) { 985ccd979bdSMark Fasheh mlog_errno(-EIO); 986ccd979bdSMark Fasheh return -EIO; 987ccd979bdSMark Fasheh } 988ccd979bdSMark Fasheh lock_buffer(*bh); 989ccd979bdSMark Fasheh if (!buffer_dirty(*bh)) 990ccd979bdSMark Fasheh clear_buffer_uptodate(*bh); 991ccd979bdSMark Fasheh unlock_buffer(*bh); 992ccd979bdSMark Fasheh ll_rw_block(READ, 1, bh); 993ccd979bdSMark Fasheh wait_on_buffer(*bh); 994ccd979bdSMark Fasheh return 0; 995ccd979bdSMark Fasheh } 996ccd979bdSMark Fasheh 997ccd979bdSMark Fasheh /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ 998ccd979bdSMark Fasheh static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) 999ccd979bdSMark Fasheh { 1000ccd979bdSMark Fasheh int status; 1001ccd979bdSMark Fasheh 1002ccd979bdSMark Fasheh /* XXX hold a ref on the node while mounte? easy enough, if 1003ccd979bdSMark Fasheh * desirable. */ 1004ccd979bdSMark Fasheh osb->node_num = o2nm_this_node(); 1005ccd979bdSMark Fasheh if (osb->node_num == O2NM_MAX_NODES) { 1006ccd979bdSMark Fasheh mlog(ML_ERROR, "could not find this host's node number\n"); 1007ccd979bdSMark Fasheh status = -ENOENT; 1008ccd979bdSMark Fasheh goto bail; 1009ccd979bdSMark Fasheh } 1010ccd979bdSMark Fasheh 1011781ee3e2SSunil Mushran mlog(0, "I am node %d\n", osb->node_num); 1012ccd979bdSMark Fasheh 1013ccd979bdSMark Fasheh status = 0; 1014ccd979bdSMark Fasheh bail: 1015ccd979bdSMark Fasheh return status; 1016ccd979bdSMark Fasheh } 1017ccd979bdSMark Fasheh 1018ccd979bdSMark Fasheh static int ocfs2_mount_volume(struct super_block *sb) 1019ccd979bdSMark Fasheh { 1020ccd979bdSMark Fasheh int status = 0; 1021ccd979bdSMark Fasheh int unlock_super = 0; 1022ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1023ccd979bdSMark Fasheh 1024ccd979bdSMark Fasheh mlog_entry_void(); 1025ccd979bdSMark Fasheh 1026ccd979bdSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 1027ccd979bdSMark Fasheh goto leave; 1028ccd979bdSMark Fasheh 1029ccd979bdSMark Fasheh status = ocfs2_fill_local_node_info(osb); 1030ccd979bdSMark Fasheh if (status < 0) { 1031ccd979bdSMark Fasheh mlog_errno(status); 1032ccd979bdSMark Fasheh goto leave; 1033ccd979bdSMark Fasheh } 1034ccd979bdSMark Fasheh 1035ccd979bdSMark Fasheh status = ocfs2_register_hb_callbacks(osb); 1036ccd979bdSMark Fasheh if (status < 0) { 1037ccd979bdSMark Fasheh mlog_errno(status); 1038ccd979bdSMark Fasheh goto leave; 1039ccd979bdSMark Fasheh } 1040ccd979bdSMark Fasheh 1041ccd979bdSMark Fasheh status = ocfs2_dlm_init(osb); 1042ccd979bdSMark Fasheh if (status < 0) { 1043ccd979bdSMark Fasheh mlog_errno(status); 1044ccd979bdSMark Fasheh goto leave; 1045ccd979bdSMark Fasheh } 1046ccd979bdSMark Fasheh 1047ccd979bdSMark Fasheh /* requires vote_thread to be running. */ 1048ccd979bdSMark Fasheh status = ocfs2_register_net_handlers(osb); 1049ccd979bdSMark Fasheh if (status < 0) { 1050ccd979bdSMark Fasheh mlog_errno(status); 1051ccd979bdSMark Fasheh goto leave; 1052ccd979bdSMark Fasheh } 1053ccd979bdSMark Fasheh 1054ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 1055ccd979bdSMark Fasheh if (status < 0) { 1056ccd979bdSMark Fasheh mlog_errno(status); 1057ccd979bdSMark Fasheh goto leave; 1058ccd979bdSMark Fasheh } 1059ccd979bdSMark Fasheh unlock_super = 1; 1060ccd979bdSMark Fasheh 1061ccd979bdSMark Fasheh /* This will load up the node map and add ourselves to it. */ 1062ccd979bdSMark Fasheh status = ocfs2_find_slot(osb); 1063ccd979bdSMark Fasheh if (status < 0) { 1064ccd979bdSMark Fasheh mlog_errno(status); 1065ccd979bdSMark Fasheh goto leave; 1066ccd979bdSMark Fasheh } 1067ccd979bdSMark Fasheh 1068ccd979bdSMark Fasheh ocfs2_populate_mounted_map(osb); 1069ccd979bdSMark Fasheh 1070ccd979bdSMark Fasheh /* load all node-local system inodes */ 1071ccd979bdSMark Fasheh status = ocfs2_init_local_system_inodes(osb); 1072ccd979bdSMark Fasheh if (status < 0) { 1073ccd979bdSMark Fasheh mlog_errno(status); 1074ccd979bdSMark Fasheh goto leave; 1075ccd979bdSMark Fasheh } 1076ccd979bdSMark Fasheh 1077ccd979bdSMark Fasheh status = ocfs2_check_volume(osb); 1078ccd979bdSMark Fasheh if (status < 0) { 1079ccd979bdSMark Fasheh mlog_errno(status); 1080ccd979bdSMark Fasheh goto leave; 1081ccd979bdSMark Fasheh } 1082ccd979bdSMark Fasheh 1083ccd979bdSMark Fasheh status = ocfs2_truncate_log_init(osb); 1084ccd979bdSMark Fasheh if (status < 0) { 1085ccd979bdSMark Fasheh mlog_errno(status); 1086ccd979bdSMark Fasheh goto leave; 1087ccd979bdSMark Fasheh } 1088ccd979bdSMark Fasheh 1089ccd979bdSMark Fasheh /* This should be sent *after* we recovered our journal as it 1090ccd979bdSMark Fasheh * will cause other nodes to unmark us as needing 1091ccd979bdSMark Fasheh * recovery. However, we need to send it *before* dropping the 1092ccd979bdSMark Fasheh * super block lock as otherwise their recovery threads might 1093ccd979bdSMark Fasheh * try to clean us up while we're live! */ 1094ccd979bdSMark Fasheh status = ocfs2_request_mount_vote(osb); 1095ccd979bdSMark Fasheh if (status < 0) 1096ccd979bdSMark Fasheh mlog_errno(status); 1097ccd979bdSMark Fasheh 1098ccd979bdSMark Fasheh leave: 1099ccd979bdSMark Fasheh if (unlock_super) 1100ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1101ccd979bdSMark Fasheh 1102ccd979bdSMark Fasheh mlog_exit(status); 1103ccd979bdSMark Fasheh return status; 1104ccd979bdSMark Fasheh } 1105ccd979bdSMark Fasheh 1106ccd979bdSMark Fasheh /* we can't grab the goofy sem lock from inside wait_event, so we use 1107ccd979bdSMark Fasheh * memory barriers to make sure that we'll see the null task before 1108ccd979bdSMark Fasheh * being woken up */ 1109ccd979bdSMark Fasheh static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) 1110ccd979bdSMark Fasheh { 1111ccd979bdSMark Fasheh mb(); 1112ccd979bdSMark Fasheh return osb->recovery_thread_task != NULL; 1113ccd979bdSMark Fasheh } 1114ccd979bdSMark Fasheh 1115ccd979bdSMark Fasheh static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) 1116ccd979bdSMark Fasheh { 1117ccd979bdSMark Fasheh int tmp; 1118ccd979bdSMark Fasheh struct ocfs2_super *osb = NULL; 1119ccd979bdSMark Fasheh 1120ccd979bdSMark Fasheh mlog_entry("(0x%p)\n", sb); 1121ccd979bdSMark Fasheh 1122ccd979bdSMark Fasheh BUG_ON(!sb); 1123ccd979bdSMark Fasheh osb = OCFS2_SB(sb); 1124ccd979bdSMark Fasheh BUG_ON(!osb); 1125ccd979bdSMark Fasheh 1126ccd979bdSMark Fasheh ocfs2_shutdown_local_alloc(osb); 1127ccd979bdSMark Fasheh 1128ccd979bdSMark Fasheh ocfs2_truncate_log_shutdown(osb); 1129ccd979bdSMark Fasheh 1130ccd979bdSMark Fasheh /* disable any new recovery threads and wait for any currently 1131ccd979bdSMark Fasheh * running ones to exit. Do this before setting the vol_state. */ 1132c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 1133ccd979bdSMark Fasheh osb->disable_recovery = 1; 1134c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1135ccd979bdSMark Fasheh wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); 1136ccd979bdSMark Fasheh 1137ccd979bdSMark Fasheh /* At this point, we know that no more recovery threads can be 1138ccd979bdSMark Fasheh * launched, so wait for any recovery completion work to 1139ccd979bdSMark Fasheh * complete. */ 1140ccd979bdSMark Fasheh flush_workqueue(ocfs2_wq); 1141ccd979bdSMark Fasheh 1142ccd979bdSMark Fasheh ocfs2_journal_shutdown(osb); 1143ccd979bdSMark Fasheh 1144ccd979bdSMark Fasheh ocfs2_sync_blockdev(sb); 1145ccd979bdSMark Fasheh 1146ccd979bdSMark Fasheh /* No dlm means we've failed during mount, so skip all the 1147ccd979bdSMark Fasheh * steps which depended on that to complete. */ 1148ccd979bdSMark Fasheh if (osb->dlm) { 1149ccd979bdSMark Fasheh tmp = ocfs2_super_lock(osb, 1); 1150ccd979bdSMark Fasheh if (tmp < 0) { 1151ccd979bdSMark Fasheh mlog_errno(tmp); 1152ccd979bdSMark Fasheh return; 1153ccd979bdSMark Fasheh } 1154ccd979bdSMark Fasheh 1155ccd979bdSMark Fasheh tmp = ocfs2_request_umount_vote(osb); 1156ccd979bdSMark Fasheh if (tmp < 0) 1157ccd979bdSMark Fasheh mlog_errno(tmp); 1158ccd979bdSMark Fasheh 1159ccd979bdSMark Fasheh if (osb->slot_num != OCFS2_INVALID_SLOT) 1160ccd979bdSMark Fasheh ocfs2_put_slot(osb); 1161ccd979bdSMark Fasheh 1162ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1163ccd979bdSMark Fasheh } 1164ccd979bdSMark Fasheh 1165ccd979bdSMark Fasheh ocfs2_release_system_inodes(osb); 1166ccd979bdSMark Fasheh 1167ccd979bdSMark Fasheh if (osb->dlm) { 1168ccd979bdSMark Fasheh ocfs2_unregister_net_handlers(osb); 1169ccd979bdSMark Fasheh 1170ccd979bdSMark Fasheh ocfs2_dlm_shutdown(osb); 1171ccd979bdSMark Fasheh } 1172ccd979bdSMark Fasheh 1173ccd979bdSMark Fasheh ocfs2_clear_hb_callbacks(osb); 1174ccd979bdSMark Fasheh 1175ccd979bdSMark Fasheh debugfs_remove(osb->osb_debug_root); 1176ccd979bdSMark Fasheh 1177ccd979bdSMark Fasheh if (!mnt_err) 1178ccd979bdSMark Fasheh ocfs2_stop_heartbeat(osb); 1179ccd979bdSMark Fasheh 1180ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); 1181ccd979bdSMark Fasheh 1182781ee3e2SSunil Mushran printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %d)\n", 1183781ee3e2SSunil Mushran osb->dev_str, osb->node_num); 1184ccd979bdSMark Fasheh 1185ccd979bdSMark Fasheh ocfs2_delete_osb(osb); 1186ccd979bdSMark Fasheh kfree(osb); 1187ccd979bdSMark Fasheh sb->s_dev = 0; 1188ccd979bdSMark Fasheh sb->s_fs_info = NULL; 1189ccd979bdSMark Fasheh } 1190ccd979bdSMark Fasheh 1191ccd979bdSMark Fasheh static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, 1192ccd979bdSMark Fasheh unsigned uuid_bytes) 1193ccd979bdSMark Fasheh { 1194ccd979bdSMark Fasheh int i, ret; 1195ccd979bdSMark Fasheh char *ptr; 1196ccd979bdSMark Fasheh 1197ccd979bdSMark Fasheh BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); 1198ccd979bdSMark Fasheh 1199ccd979bdSMark Fasheh osb->uuid_str = kcalloc(1, OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); 1200ccd979bdSMark Fasheh if (osb->uuid_str == NULL) 1201ccd979bdSMark Fasheh return -ENOMEM; 1202ccd979bdSMark Fasheh 1203ccd979bdSMark Fasheh for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { 1204ccd979bdSMark Fasheh /* print with null */ 1205ccd979bdSMark Fasheh ret = snprintf(ptr, 3, "%02X", uuid[i]); 1206ccd979bdSMark Fasheh if (ret != 2) /* drop super cleans up */ 1207ccd979bdSMark Fasheh return -EINVAL; 1208ccd979bdSMark Fasheh /* then only advance past the last char */ 1209ccd979bdSMark Fasheh ptr += 2; 1210ccd979bdSMark Fasheh } 1211ccd979bdSMark Fasheh 1212ccd979bdSMark Fasheh return 0; 1213ccd979bdSMark Fasheh } 1214ccd979bdSMark Fasheh 1215ccd979bdSMark Fasheh static int ocfs2_initialize_super(struct super_block *sb, 1216ccd979bdSMark Fasheh struct buffer_head *bh, 1217ccd979bdSMark Fasheh int sector_size) 1218ccd979bdSMark Fasheh { 1219ccd979bdSMark Fasheh int status = 0; 1220ccd979bdSMark Fasheh int i; 1221ccd979bdSMark Fasheh struct ocfs2_dinode *di = NULL; 1222ccd979bdSMark Fasheh struct inode *inode = NULL; 1223ccd979bdSMark Fasheh struct buffer_head *bitmap_bh = NULL; 1224ccd979bdSMark Fasheh struct ocfs2_journal *journal; 1225ccd979bdSMark Fasheh __le32 uuid_net_key; 1226ccd979bdSMark Fasheh struct ocfs2_super *osb; 1227ccd979bdSMark Fasheh 1228ccd979bdSMark Fasheh mlog_entry_void(); 1229ccd979bdSMark Fasheh 1230ccd979bdSMark Fasheh osb = kcalloc(1, sizeof(struct ocfs2_super), GFP_KERNEL); 1231ccd979bdSMark Fasheh if (!osb) { 1232ccd979bdSMark Fasheh status = -ENOMEM; 1233ccd979bdSMark Fasheh mlog_errno(status); 1234ccd979bdSMark Fasheh goto bail; 1235ccd979bdSMark Fasheh } 1236ccd979bdSMark Fasheh 1237ccd979bdSMark Fasheh sb->s_fs_info = osb; 1238ccd979bdSMark Fasheh sb->s_op = &ocfs2_sops; 1239ccd979bdSMark Fasheh sb->s_export_op = &ocfs2_export_ops; 1240ccd979bdSMark Fasheh sb->s_flags |= MS_NOATIME; 1241ccd979bdSMark Fasheh /* this is needed to support O_LARGEFILE */ 1242ccd979bdSMark Fasheh sb->s_maxbytes = ocfs2_max_file_offset(sb->s_blocksize_bits); 1243ccd979bdSMark Fasheh 1244ccd979bdSMark Fasheh osb->sb = sb; 1245ccd979bdSMark Fasheh /* Save off for ocfs2_rw_direct */ 1246ccd979bdSMark Fasheh osb->s_sectsize_bits = blksize_bits(sector_size); 1247ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb->s_sectsize_bits); 1248ccd979bdSMark Fasheh 1249ccd979bdSMark Fasheh osb->net_response_ids = 0; 1250ccd979bdSMark Fasheh spin_lock_init(&osb->net_response_lock); 1251ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->net_response_list); 1252ccd979bdSMark Fasheh 1253ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->osb_net_handlers); 1254ccd979bdSMark Fasheh init_waitqueue_head(&osb->recovery_event); 1255ccd979bdSMark Fasheh spin_lock_init(&osb->vote_task_lock); 1256ccd979bdSMark Fasheh init_waitqueue_head(&osb->vote_event); 1257ccd979bdSMark Fasheh osb->vote_work_sequence = 0; 1258ccd979bdSMark Fasheh osb->vote_wake_sequence = 0; 1259ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->blocked_lock_list); 1260ccd979bdSMark Fasheh osb->blocked_lock_count = 0; 1261ccd979bdSMark Fasheh INIT_LIST_HEAD(&osb->vote_list); 1262ccd979bdSMark Fasheh spin_lock_init(&osb->osb_lock); 1263ccd979bdSMark Fasheh 1264ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.moves, 0); 1265ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.local_data, 0); 1266ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bitmap_data, 0); 1267ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_allocs, 0); 1268ccd979bdSMark Fasheh atomic_set(&osb->alloc_stats.bg_extends, 0); 1269ccd979bdSMark Fasheh 1270ccd979bdSMark Fasheh ocfs2_init_node_maps(osb); 1271ccd979bdSMark Fasheh 1272ccd979bdSMark Fasheh snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", 1273ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1274ccd979bdSMark Fasheh 1275c74ec2f7SArjan van de Ven mutex_init(&osb->recovery_lock); 1276ccd979bdSMark Fasheh 1277ccd979bdSMark Fasheh osb->disable_recovery = 0; 1278ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 1279ccd979bdSMark Fasheh 1280ccd979bdSMark Fasheh init_waitqueue_head(&osb->checkpoint_event); 1281ccd979bdSMark Fasheh atomic_set(&osb->needs_checkpoint, 0); 1282ccd979bdSMark Fasheh 1283ccd979bdSMark Fasheh osb->node_num = O2NM_INVALID_NODE_NUM; 1284ccd979bdSMark Fasheh osb->slot_num = OCFS2_INVALID_SLOT; 1285ccd979bdSMark Fasheh 1286ccd979bdSMark Fasheh osb->local_alloc_state = OCFS2_LA_UNUSED; 1287ccd979bdSMark Fasheh osb->local_alloc_bh = NULL; 1288ccd979bdSMark Fasheh 1289ccd979bdSMark Fasheh ocfs2_setup_hb_callbacks(osb); 1290ccd979bdSMark Fasheh 1291ccd979bdSMark Fasheh init_waitqueue_head(&osb->osb_mount_event); 1292ccd979bdSMark Fasheh 1293ccd979bdSMark Fasheh osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); 1294ccd979bdSMark Fasheh if (!osb->vol_label) { 1295ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc vol label\n"); 1296ccd979bdSMark Fasheh status = -ENOMEM; 1297ccd979bdSMark Fasheh goto bail; 1298ccd979bdSMark Fasheh } 1299ccd979bdSMark Fasheh 1300ccd979bdSMark Fasheh di = (struct ocfs2_dinode *)bh->b_data; 1301ccd979bdSMark Fasheh 1302ccd979bdSMark Fasheh osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); 1303ccd979bdSMark Fasheh if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { 1304ccd979bdSMark Fasheh mlog(ML_ERROR, "Invalid number of node slots (%u)\n", 1305ccd979bdSMark Fasheh osb->max_slots); 1306ccd979bdSMark Fasheh status = -EINVAL; 1307ccd979bdSMark Fasheh goto bail; 1308ccd979bdSMark Fasheh } 1309781ee3e2SSunil Mushran mlog(0, "max_slots for this device: %u\n", osb->max_slots); 1310ccd979bdSMark Fasheh 1311b4df6ed8SMark Fasheh init_waitqueue_head(&osb->osb_wipe_event); 1312b4df6ed8SMark Fasheh osb->osb_orphan_wipes = kcalloc(osb->max_slots, 1313b4df6ed8SMark Fasheh sizeof(*osb->osb_orphan_wipes), 1314b4df6ed8SMark Fasheh GFP_KERNEL); 1315b4df6ed8SMark Fasheh if (!osb->osb_orphan_wipes) { 1316b4df6ed8SMark Fasheh status = -ENOMEM; 1317b4df6ed8SMark Fasheh mlog_errno(status); 1318b4df6ed8SMark Fasheh goto bail; 1319b4df6ed8SMark Fasheh } 1320b4df6ed8SMark Fasheh 1321ccd979bdSMark Fasheh osb->s_feature_compat = 1322ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); 1323ccd979bdSMark Fasheh osb->s_feature_ro_compat = 1324ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); 1325ccd979bdSMark Fasheh osb->s_feature_incompat = 1326ccd979bdSMark Fasheh le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); 1327ccd979bdSMark Fasheh 1328ccd979bdSMark Fasheh if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { 1329ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount because of unsupported " 1330ccd979bdSMark Fasheh "optional features (%x).\n", i); 1331ccd979bdSMark Fasheh status = -EINVAL; 1332ccd979bdSMark Fasheh goto bail; 1333ccd979bdSMark Fasheh } 1334ccd979bdSMark Fasheh if (!(osb->sb->s_flags & MS_RDONLY) && 1335ccd979bdSMark Fasheh (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { 1336ccd979bdSMark Fasheh mlog(ML_ERROR, "couldn't mount RDWR because of " 1337ccd979bdSMark Fasheh "unsupported optional features (%x).\n", i); 1338ccd979bdSMark Fasheh status = -EINVAL; 1339ccd979bdSMark Fasheh goto bail; 1340ccd979bdSMark Fasheh } 1341ccd979bdSMark Fasheh 1342ccd979bdSMark Fasheh get_random_bytes(&osb->s_next_generation, sizeof(u32)); 1343ccd979bdSMark Fasheh 1344ccd979bdSMark Fasheh /* FIXME 1345ccd979bdSMark Fasheh * This should be done in ocfs2_journal_init(), but unknown 1346ccd979bdSMark Fasheh * ordering issues will cause the filesystem to crash. 1347ccd979bdSMark Fasheh * If anyone wants to figure out what part of the code 1348ccd979bdSMark Fasheh * refers to osb->journal before ocfs2_journal_init() is run, 1349ccd979bdSMark Fasheh * be my guest. 1350ccd979bdSMark Fasheh */ 1351ccd979bdSMark Fasheh /* initialize our journal structure */ 1352ccd979bdSMark Fasheh 1353ccd979bdSMark Fasheh journal = kcalloc(1, sizeof(struct ocfs2_journal), GFP_KERNEL); 1354ccd979bdSMark Fasheh if (!journal) { 1355ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to alloc journal\n"); 1356ccd979bdSMark Fasheh status = -ENOMEM; 1357ccd979bdSMark Fasheh goto bail; 1358ccd979bdSMark Fasheh } 1359ccd979bdSMark Fasheh osb->journal = journal; 1360ccd979bdSMark Fasheh journal->j_osb = osb; 1361ccd979bdSMark Fasheh 1362ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 1363ccd979bdSMark Fasheh init_rwsem(&journal->j_trans_barrier); 1364ccd979bdSMark Fasheh init_waitqueue_head(&journal->j_checkpointed); 1365ccd979bdSMark Fasheh spin_lock_init(&journal->j_lock); 1366ccd979bdSMark Fasheh journal->j_trans_id = (unsigned long) 1; 1367ccd979bdSMark Fasheh INIT_LIST_HEAD(&journal->j_la_cleanups); 1368ccd979bdSMark Fasheh INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery, osb); 1369ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 1370ccd979bdSMark Fasheh 1371ccd979bdSMark Fasheh /* get some pseudo constants for clustersize bits */ 1372ccd979bdSMark Fasheh osb->s_clustersize_bits = 1373ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits); 1374ccd979bdSMark Fasheh osb->s_clustersize = 1 << osb->s_clustersize_bits; 1375ccd979bdSMark Fasheh mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); 1376ccd979bdSMark Fasheh 1377ccd979bdSMark Fasheh if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || 1378ccd979bdSMark Fasheh osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { 1379ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", 1380ccd979bdSMark Fasheh osb->s_clustersize); 1381ccd979bdSMark Fasheh status = -EINVAL; 1382ccd979bdSMark Fasheh goto bail; 1383ccd979bdSMark Fasheh } 1384ccd979bdSMark Fasheh 1385ccd979bdSMark Fasheh if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) 1386ccd979bdSMark Fasheh > (u32)~0UL) { 1387ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume might try to write to blocks beyond " 1388ccd979bdSMark Fasheh "what jbd can address in 32 bits.\n"); 1389ccd979bdSMark Fasheh status = -EINVAL; 1390ccd979bdSMark Fasheh goto bail; 1391ccd979bdSMark Fasheh } 1392ccd979bdSMark Fasheh 1393ccd979bdSMark Fasheh if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, 1394ccd979bdSMark Fasheh sizeof(di->id2.i_super.s_uuid))) { 1395ccd979bdSMark Fasheh mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); 1396ccd979bdSMark Fasheh status = -ENOMEM; 1397ccd979bdSMark Fasheh goto bail; 1398ccd979bdSMark Fasheh } 1399ccd979bdSMark Fasheh 140078427043SMark Fasheh memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); 1401ccd979bdSMark Fasheh osb->net_key = le32_to_cpu(uuid_net_key); 1402ccd979bdSMark Fasheh 1403ccd979bdSMark Fasheh strncpy(osb->vol_label, di->id2.i_super.s_label, 63); 1404ccd979bdSMark Fasheh osb->vol_label[63] = '\0'; 1405ccd979bdSMark Fasheh osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); 1406ccd979bdSMark Fasheh osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); 1407ccd979bdSMark Fasheh osb->first_cluster_group_blkno = 1408ccd979bdSMark Fasheh le64_to_cpu(di->id2.i_super.s_first_cluster_group); 1409ccd979bdSMark Fasheh osb->fs_generation = le32_to_cpu(di->i_fs_generation); 1410ccd979bdSMark Fasheh mlog(0, "vol_label: %s\n", osb->vol_label); 1411ccd979bdSMark Fasheh mlog(0, "uuid: %s\n", osb->uuid_str); 1412b0697053SMark Fasheh mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", 1413b0697053SMark Fasheh (unsigned long long)osb->root_blkno, 1414b0697053SMark Fasheh (unsigned long long)osb->system_dir_blkno); 1415ccd979bdSMark Fasheh 1416ccd979bdSMark Fasheh osb->osb_dlm_debug = ocfs2_new_dlm_debug(); 1417ccd979bdSMark Fasheh if (!osb->osb_dlm_debug) { 1418ccd979bdSMark Fasheh status = -ENOMEM; 1419ccd979bdSMark Fasheh mlog_errno(status); 1420ccd979bdSMark Fasheh goto bail; 1421ccd979bdSMark Fasheh } 1422ccd979bdSMark Fasheh 1423ccd979bdSMark Fasheh atomic_set(&osb->vol_state, VOLUME_INIT); 1424ccd979bdSMark Fasheh 1425ccd979bdSMark Fasheh /* load root, system_dir, and all global system inodes */ 1426ccd979bdSMark Fasheh status = ocfs2_init_global_system_inodes(osb); 1427ccd979bdSMark Fasheh if (status < 0) { 1428ccd979bdSMark Fasheh mlog_errno(status); 1429ccd979bdSMark Fasheh goto bail; 1430ccd979bdSMark Fasheh } 1431ccd979bdSMark Fasheh 1432ccd979bdSMark Fasheh /* 1433ccd979bdSMark Fasheh * global bitmap 1434ccd979bdSMark Fasheh */ 1435ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, 1436ccd979bdSMark Fasheh OCFS2_INVALID_SLOT); 1437ccd979bdSMark Fasheh if (!inode) { 1438ccd979bdSMark Fasheh status = -EINVAL; 1439ccd979bdSMark Fasheh mlog_errno(status); 1440ccd979bdSMark Fasheh goto bail; 1441ccd979bdSMark Fasheh } 1442ccd979bdSMark Fasheh 1443ccd979bdSMark Fasheh osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; 1444ccd979bdSMark Fasheh 1445101ebf25SMark Fasheh /* We don't have a cluster lock on the bitmap here because 1446101ebf25SMark Fasheh * we're only interested in static information and the extra 1447101ebf25SMark Fasheh * complexity at mount time isn't worht it. Don't pass the 1448101ebf25SMark Fasheh * inode in to the read function though as we don't want it to 1449101ebf25SMark Fasheh * be put in the cache. */ 1450ccd979bdSMark Fasheh status = ocfs2_read_block(osb, osb->bitmap_blkno, &bitmap_bh, 0, 1451101ebf25SMark Fasheh NULL); 1452ccd979bdSMark Fasheh iput(inode); 1453ccd979bdSMark Fasheh if (status < 0) { 1454ccd979bdSMark Fasheh mlog_errno(status); 1455ccd979bdSMark Fasheh goto bail; 1456ccd979bdSMark Fasheh } 1457ccd979bdSMark Fasheh 1458ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) bitmap_bh->b_data; 1459ccd979bdSMark Fasheh osb->bitmap_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg); 1460ccd979bdSMark Fasheh brelse(bitmap_bh); 1461b0697053SMark Fasheh mlog(0, "cluster bitmap inode: %llu, clusters per group: %u\n", 1462b0697053SMark Fasheh (unsigned long long)osb->bitmap_blkno, osb->bitmap_cpg); 1463ccd979bdSMark Fasheh 1464ccd979bdSMark Fasheh status = ocfs2_init_slot_info(osb); 1465ccd979bdSMark Fasheh if (status < 0) { 1466ccd979bdSMark Fasheh mlog_errno(status); 1467ccd979bdSMark Fasheh goto bail; 1468ccd979bdSMark Fasheh } 1469ccd979bdSMark Fasheh 1470ccd979bdSMark Fasheh bail: 1471ccd979bdSMark Fasheh mlog_exit(status); 1472ccd979bdSMark Fasheh return status; 1473ccd979bdSMark Fasheh } 1474ccd979bdSMark Fasheh 1475ccd979bdSMark Fasheh /* 1476ccd979bdSMark Fasheh * will return: -EAGAIN if it is ok to keep searching for superblocks 1477ccd979bdSMark Fasheh * -EINVAL if there is a bad superblock 1478ccd979bdSMark Fasheh * 0 on success 1479ccd979bdSMark Fasheh */ 1480ccd979bdSMark Fasheh static int ocfs2_verify_volume(struct ocfs2_dinode *di, 1481ccd979bdSMark Fasheh struct buffer_head *bh, 1482ccd979bdSMark Fasheh u32 blksz) 1483ccd979bdSMark Fasheh { 1484ccd979bdSMark Fasheh int status = -EAGAIN; 1485ccd979bdSMark Fasheh 1486ccd979bdSMark Fasheh mlog_entry_void(); 1487ccd979bdSMark Fasheh 1488ccd979bdSMark Fasheh if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, 1489ccd979bdSMark Fasheh strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { 1490ccd979bdSMark Fasheh status = -EINVAL; 1491ccd979bdSMark Fasheh if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { 1492ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with incorrect block " 1493ccd979bdSMark Fasheh "size: found %u, should be %u\n", 1494ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), 1495ccd979bdSMark Fasheh blksz); 1496ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != 1497ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL || 1498ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level) != 1499ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL) { 1500ccd979bdSMark Fasheh mlog(ML_ERROR, "found superblock with bad version: " 1501ccd979bdSMark Fasheh "found %u.%u, should be %u.%u\n", 1502ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_major_rev_level), 1503ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_minor_rev_level), 1504ccd979bdSMark Fasheh OCFS2_MAJOR_REV_LEVEL, 1505ccd979bdSMark Fasheh OCFS2_MINOR_REV_LEVEL); 1506ccd979bdSMark Fasheh } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { 1507ccd979bdSMark Fasheh mlog(ML_ERROR, "bad block number on superblock: " 1508b0697053SMark Fasheh "found %llu, should be %llu\n", 1509b0697053SMark Fasheh (unsigned long long)di->i_blkno, 1510b0697053SMark Fasheh (unsigned long long)bh->b_blocknr); 1511ccd979bdSMark Fasheh } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || 1512ccd979bdSMark Fasheh le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { 1513ccd979bdSMark Fasheh mlog(ML_ERROR, "bad cluster size found: %u\n", 1514ccd979bdSMark Fasheh 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); 1515ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { 1516ccd979bdSMark Fasheh mlog(ML_ERROR, "bad root_blkno: 0\n"); 1517ccd979bdSMark Fasheh } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { 1518ccd979bdSMark Fasheh mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); 1519ccd979bdSMark Fasheh } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { 1520ccd979bdSMark Fasheh mlog(ML_ERROR, 1521ccd979bdSMark Fasheh "Superblock slots found greater than file system " 1522ccd979bdSMark Fasheh "maximum: found %u, max %u\n", 1523ccd979bdSMark Fasheh le16_to_cpu(di->id2.i_super.s_max_slots), 1524ccd979bdSMark Fasheh OCFS2_MAX_SLOTS); 1525ccd979bdSMark Fasheh } else { 1526ccd979bdSMark Fasheh /* found it! */ 1527ccd979bdSMark Fasheh status = 0; 1528ccd979bdSMark Fasheh } 1529ccd979bdSMark Fasheh } 1530ccd979bdSMark Fasheh 1531ccd979bdSMark Fasheh mlog_exit(status); 1532ccd979bdSMark Fasheh return status; 1533ccd979bdSMark Fasheh } 1534ccd979bdSMark Fasheh 1535ccd979bdSMark Fasheh static int ocfs2_check_volume(struct ocfs2_super *osb) 1536ccd979bdSMark Fasheh { 1537ccd979bdSMark Fasheh int status = 0; 1538ccd979bdSMark Fasheh int dirty; 1539ccd979bdSMark Fasheh struct ocfs2_dinode *local_alloc = NULL; /* only used if we 1540ccd979bdSMark Fasheh * recover 1541ccd979bdSMark Fasheh * ourselves. */ 1542ccd979bdSMark Fasheh 1543ccd979bdSMark Fasheh mlog_entry_void(); 1544ccd979bdSMark Fasheh 1545ccd979bdSMark Fasheh /* Init our journal object. */ 1546ccd979bdSMark Fasheh status = ocfs2_journal_init(osb->journal, &dirty); 1547ccd979bdSMark Fasheh if (status < 0) { 1548ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not initialize journal!\n"); 1549ccd979bdSMark Fasheh goto finally; 1550ccd979bdSMark Fasheh } 1551ccd979bdSMark Fasheh 1552ccd979bdSMark Fasheh /* If the journal was unmounted cleanly then we don't want to 1553ccd979bdSMark Fasheh * recover anything. Otherwise, journal_load will do that 1554ccd979bdSMark Fasheh * dirty work for us :) */ 1555ccd979bdSMark Fasheh if (!dirty) { 1556ccd979bdSMark Fasheh status = ocfs2_journal_wipe(osb->journal, 0); 1557ccd979bdSMark Fasheh if (status < 0) { 1558ccd979bdSMark Fasheh mlog_errno(status); 1559ccd979bdSMark Fasheh goto finally; 1560ccd979bdSMark Fasheh } 1561ccd979bdSMark Fasheh } else { 1562ccd979bdSMark Fasheh mlog(ML_NOTICE, "File system was not unmounted cleanly, " 1563ccd979bdSMark Fasheh "recovering volume.\n"); 1564ccd979bdSMark Fasheh } 1565ccd979bdSMark Fasheh 1566ccd979bdSMark Fasheh /* will play back anything left in the journal. */ 1567ccd979bdSMark Fasheh ocfs2_journal_load(osb->journal); 1568ccd979bdSMark Fasheh 1569ccd979bdSMark Fasheh if (dirty) { 1570ccd979bdSMark Fasheh /* recover my local alloc if we didn't unmount cleanly. */ 1571ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, 1572ccd979bdSMark Fasheh osb->slot_num, 1573ccd979bdSMark Fasheh &local_alloc); 1574ccd979bdSMark Fasheh if (status < 0) { 1575ccd979bdSMark Fasheh mlog_errno(status); 1576ccd979bdSMark Fasheh goto finally; 1577ccd979bdSMark Fasheh } 1578ccd979bdSMark Fasheh /* we complete the recovery process after we've marked 1579ccd979bdSMark Fasheh * ourselves as mounted. */ 1580ccd979bdSMark Fasheh } 1581ccd979bdSMark Fasheh 1582ccd979bdSMark Fasheh mlog(0, "Journal loaded.\n"); 1583ccd979bdSMark Fasheh 1584ccd979bdSMark Fasheh status = ocfs2_load_local_alloc(osb); 1585ccd979bdSMark Fasheh if (status < 0) { 1586ccd979bdSMark Fasheh mlog_errno(status); 1587ccd979bdSMark Fasheh goto finally; 1588ccd979bdSMark Fasheh } 1589ccd979bdSMark Fasheh 1590ccd979bdSMark Fasheh if (dirty) { 1591ccd979bdSMark Fasheh /* Recovery will be completed after we've mounted the 1592ccd979bdSMark Fasheh * rest of the volume. */ 1593ccd979bdSMark Fasheh osb->dirty = 1; 1594ccd979bdSMark Fasheh osb->local_alloc_copy = local_alloc; 1595ccd979bdSMark Fasheh local_alloc = NULL; 1596ccd979bdSMark Fasheh } 1597ccd979bdSMark Fasheh 1598ccd979bdSMark Fasheh /* go through each journal, trylock it and if you get the 1599ccd979bdSMark Fasheh * lock, and it's marked as dirty, set the bit in the recover 1600ccd979bdSMark Fasheh * map and launch a recovery thread for it. */ 1601ccd979bdSMark Fasheh status = ocfs2_mark_dead_nodes(osb); 1602ccd979bdSMark Fasheh if (status < 0) 1603ccd979bdSMark Fasheh mlog_errno(status); 1604ccd979bdSMark Fasheh 1605ccd979bdSMark Fasheh finally: 1606ccd979bdSMark Fasheh if (local_alloc) 1607ccd979bdSMark Fasheh kfree(local_alloc); 1608ccd979bdSMark Fasheh 1609ccd979bdSMark Fasheh mlog_exit(status); 1610ccd979bdSMark Fasheh return status; 1611ccd979bdSMark Fasheh } 1612ccd979bdSMark Fasheh 1613ccd979bdSMark Fasheh /* 1614ccd979bdSMark Fasheh * The routine gets called from dismount or close whenever a dismount on 1615ccd979bdSMark Fasheh * volume is requested and the osb open count becomes 1. 1616ccd979bdSMark Fasheh * It will remove the osb from the global list and also free up all the 1617ccd979bdSMark Fasheh * initialized resources and fileobject. 1618ccd979bdSMark Fasheh */ 1619ccd979bdSMark Fasheh static void ocfs2_delete_osb(struct ocfs2_super *osb) 1620ccd979bdSMark Fasheh { 1621ccd979bdSMark Fasheh mlog_entry_void(); 1622ccd979bdSMark Fasheh 1623ccd979bdSMark Fasheh /* This function assumes that the caller has the main osb resource */ 1624ccd979bdSMark Fasheh 1625ccd979bdSMark Fasheh if (osb->slot_info) 1626ccd979bdSMark Fasheh ocfs2_free_slot_info(osb->slot_info); 1627ccd979bdSMark Fasheh 1628b4df6ed8SMark Fasheh kfree(osb->osb_orphan_wipes); 1629ccd979bdSMark Fasheh /* FIXME 1630ccd979bdSMark Fasheh * This belongs in journal shutdown, but because we have to 1631ccd979bdSMark Fasheh * allocate osb->journal at the start of ocfs2_initalize_osb(), 1632ccd979bdSMark Fasheh * we free it here. 1633ccd979bdSMark Fasheh */ 1634ccd979bdSMark Fasheh kfree(osb->journal); 1635ccd979bdSMark Fasheh if (osb->local_alloc_copy) 1636ccd979bdSMark Fasheh kfree(osb->local_alloc_copy); 1637ccd979bdSMark Fasheh kfree(osb->uuid_str); 1638ccd979bdSMark Fasheh ocfs2_put_dlm_debug(osb->osb_dlm_debug); 1639ccd979bdSMark Fasheh memset(osb, 0, sizeof(struct ocfs2_super)); 1640ccd979bdSMark Fasheh 1641ccd979bdSMark Fasheh mlog_exit_void(); 1642ccd979bdSMark Fasheh } 1643ccd979bdSMark Fasheh 1644ccd979bdSMark Fasheh /* Put OCFS2 into a readonly state, or (if the user specifies it), 1645ccd979bdSMark Fasheh * panic(). We do not support continue-on-error operation. */ 1646ccd979bdSMark Fasheh static void ocfs2_handle_error(struct super_block *sb) 1647ccd979bdSMark Fasheh { 1648ccd979bdSMark Fasheh struct ocfs2_super *osb = OCFS2_SB(sb); 1649ccd979bdSMark Fasheh 1650ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) 1651ccd979bdSMark Fasheh panic("OCFS2: (device %s): panic forced after error\n", 1652ccd979bdSMark Fasheh sb->s_id); 1653ccd979bdSMark Fasheh 1654ccd979bdSMark Fasheh ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); 1655ccd979bdSMark Fasheh 1656ccd979bdSMark Fasheh if (sb->s_flags & MS_RDONLY && 1657ccd979bdSMark Fasheh (ocfs2_is_soft_readonly(osb) || 1658ccd979bdSMark Fasheh ocfs2_is_hard_readonly(osb))) 1659ccd979bdSMark Fasheh return; 1660ccd979bdSMark Fasheh 1661ccd979bdSMark Fasheh printk(KERN_CRIT "File system is now read-only due to the potential " 1662ccd979bdSMark Fasheh "of on-disk corruption. Please run fsck.ocfs2 once the file " 1663ccd979bdSMark Fasheh "system is unmounted.\n"); 1664ccd979bdSMark Fasheh sb->s_flags |= MS_RDONLY; 1665ccd979bdSMark Fasheh ocfs2_set_ro_flag(osb, 0); 1666ccd979bdSMark Fasheh } 1667ccd979bdSMark Fasheh 1668ccd979bdSMark Fasheh static char error_buf[1024]; 1669ccd979bdSMark Fasheh 1670ccd979bdSMark Fasheh void __ocfs2_error(struct super_block *sb, 1671ccd979bdSMark Fasheh const char *function, 1672ccd979bdSMark Fasheh const char *fmt, ...) 1673ccd979bdSMark Fasheh { 1674ccd979bdSMark Fasheh va_list args; 1675ccd979bdSMark Fasheh 1676ccd979bdSMark Fasheh va_start(args, fmt); 1677ccd979bdSMark Fasheh vsprintf(error_buf, fmt, args); 1678ccd979bdSMark Fasheh va_end(args); 1679ccd979bdSMark Fasheh 1680ccd979bdSMark Fasheh /* Not using mlog here because we want to show the actual 1681ccd979bdSMark Fasheh * function the error came from. */ 1682ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", 1683ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1684ccd979bdSMark Fasheh 1685ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1686ccd979bdSMark Fasheh } 1687ccd979bdSMark Fasheh 1688ccd979bdSMark Fasheh /* Handle critical errors. This is intentionally more drastic than 1689ccd979bdSMark Fasheh * ocfs2_handle_error, so we only use for things like journal errors, 1690ccd979bdSMark Fasheh * etc. */ 1691ccd979bdSMark Fasheh void __ocfs2_abort(struct super_block* sb, 1692ccd979bdSMark Fasheh const char *function, 1693ccd979bdSMark Fasheh const char *fmt, ...) 1694ccd979bdSMark Fasheh { 1695ccd979bdSMark Fasheh va_list args; 1696ccd979bdSMark Fasheh 1697ccd979bdSMark Fasheh va_start(args, fmt); 1698ccd979bdSMark Fasheh vsprintf(error_buf, fmt, args); 1699ccd979bdSMark Fasheh va_end(args); 1700ccd979bdSMark Fasheh 1701ccd979bdSMark Fasheh printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", 1702ccd979bdSMark Fasheh sb->s_id, function, error_buf); 1703ccd979bdSMark Fasheh 1704ccd979bdSMark Fasheh /* We don't have the cluster support yet to go straight to 1705ccd979bdSMark Fasheh * hard readonly in here. Until then, we want to keep 1706ccd979bdSMark Fasheh * ocfs2_abort() so that we can at least mark critical 1707ccd979bdSMark Fasheh * errors. 1708ccd979bdSMark Fasheh * 1709ccd979bdSMark Fasheh * TODO: This should abort the journal and alert other nodes 1710ccd979bdSMark Fasheh * that our slot needs recovery. */ 1711ccd979bdSMark Fasheh 1712ccd979bdSMark Fasheh /* Force a panic(). This stinks, but it's better than letting 1713ccd979bdSMark Fasheh * things continue without having a proper hard readonly 1714ccd979bdSMark Fasheh * here. */ 1715ccd979bdSMark Fasheh OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; 1716ccd979bdSMark Fasheh ocfs2_handle_error(sb); 1717ccd979bdSMark Fasheh } 1718ccd979bdSMark Fasheh 1719ccd979bdSMark Fasheh module_init(ocfs2_init); 1720ccd979bdSMark Fasheh module_exit(ocfs2_exit); 1721