1ccd979bdSMark Fasheh /* -*- mode: c; c-basic-offset: 8; -*- 2ccd979bdSMark Fasheh * vim: noexpandtab sw=8 ts=8 sts=0: 3ccd979bdSMark Fasheh * 4ccd979bdSMark Fasheh * journal.c 5ccd979bdSMark Fasheh * 6ccd979bdSMark Fasheh * Defines functions of journalling api 7ccd979bdSMark Fasheh * 8ccd979bdSMark Fasheh * Copyright (C) 2003, 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/fs.h> 27ccd979bdSMark Fasheh #include <linux/types.h> 28ccd979bdSMark Fasheh #include <linux/slab.h> 29ccd979bdSMark Fasheh #include <linux/highmem.h> 30ccd979bdSMark Fasheh #include <linux/kthread.h> 31ccd979bdSMark Fasheh 32ccd979bdSMark Fasheh #define MLOG_MASK_PREFIX ML_JOURNAL 33ccd979bdSMark Fasheh #include <cluster/masklog.h> 34ccd979bdSMark Fasheh 35ccd979bdSMark Fasheh #include "ocfs2.h" 36ccd979bdSMark Fasheh 37ccd979bdSMark Fasheh #include "alloc.h" 38316f4b9fSMark Fasheh #include "dir.h" 39ccd979bdSMark Fasheh #include "dlmglue.h" 40ccd979bdSMark Fasheh #include "extent_map.h" 41ccd979bdSMark Fasheh #include "heartbeat.h" 42ccd979bdSMark Fasheh #include "inode.h" 43ccd979bdSMark Fasheh #include "journal.h" 44ccd979bdSMark Fasheh #include "localalloc.h" 45ccd979bdSMark Fasheh #include "slot_map.h" 46ccd979bdSMark Fasheh #include "super.h" 47ccd979bdSMark Fasheh #include "sysfile.h" 48ccd979bdSMark Fasheh 49ccd979bdSMark Fasheh #include "buffer_head_io.h" 50ccd979bdSMark Fasheh 5134af946aSIngo Molnar DEFINE_SPINLOCK(trans_inc_lock); 52ccd979bdSMark Fasheh 53ccd979bdSMark Fasheh static int ocfs2_force_read_journal(struct inode *inode); 54ccd979bdSMark Fasheh static int ocfs2_recover_node(struct ocfs2_super *osb, 55ccd979bdSMark Fasheh int node_num); 56ccd979bdSMark Fasheh static int __ocfs2_recovery_thread(void *arg); 57ccd979bdSMark Fasheh static int ocfs2_commit_cache(struct ocfs2_super *osb); 58ccd979bdSMark Fasheh static int ocfs2_wait_on_mount(struct ocfs2_super *osb); 59ccd979bdSMark Fasheh static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, 60539d8264SSunil Mushran int dirty, int replayed); 61ccd979bdSMark Fasheh static int ocfs2_trylock_journal(struct ocfs2_super *osb, 62ccd979bdSMark Fasheh int slot_num); 63ccd979bdSMark Fasheh static int ocfs2_recover_orphans(struct ocfs2_super *osb, 64ccd979bdSMark Fasheh int slot); 65ccd979bdSMark Fasheh static int ocfs2_commit_thread(void *arg); 66ccd979bdSMark Fasheh 67553abd04SJoel Becker 68553abd04SJoel Becker /* 69553abd04SJoel Becker * The recovery_list is a simple linked list of node numbers to recover. 70553abd04SJoel Becker * It is protected by the recovery_lock. 71553abd04SJoel Becker */ 72553abd04SJoel Becker 73553abd04SJoel Becker struct ocfs2_recovery_map { 74fc881fa0SJoel Becker unsigned int rm_used; 75553abd04SJoel Becker unsigned int *rm_entries; 76553abd04SJoel Becker }; 77553abd04SJoel Becker 78553abd04SJoel Becker int ocfs2_recovery_init(struct ocfs2_super *osb) 79553abd04SJoel Becker { 80553abd04SJoel Becker struct ocfs2_recovery_map *rm; 81553abd04SJoel Becker 82553abd04SJoel Becker mutex_init(&osb->recovery_lock); 83553abd04SJoel Becker osb->disable_recovery = 0; 84553abd04SJoel Becker osb->recovery_thread_task = NULL; 85553abd04SJoel Becker init_waitqueue_head(&osb->recovery_event); 86553abd04SJoel Becker 87553abd04SJoel Becker rm = kzalloc(sizeof(struct ocfs2_recovery_map) + 88553abd04SJoel Becker osb->max_slots * sizeof(unsigned int), 89553abd04SJoel Becker GFP_KERNEL); 90553abd04SJoel Becker if (!rm) { 91553abd04SJoel Becker mlog_errno(-ENOMEM); 92553abd04SJoel Becker return -ENOMEM; 93553abd04SJoel Becker } 94553abd04SJoel Becker 95553abd04SJoel Becker rm->rm_entries = (unsigned int *)((char *)rm + 96553abd04SJoel Becker sizeof(struct ocfs2_recovery_map)); 97553abd04SJoel Becker osb->recovery_map = rm; 98553abd04SJoel Becker 99553abd04SJoel Becker return 0; 100553abd04SJoel Becker } 101553abd04SJoel Becker 102553abd04SJoel Becker /* we can't grab the goofy sem lock from inside wait_event, so we use 103553abd04SJoel Becker * memory barriers to make sure that we'll see the null task before 104553abd04SJoel Becker * being woken up */ 105553abd04SJoel Becker static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) 106553abd04SJoel Becker { 107553abd04SJoel Becker mb(); 108553abd04SJoel Becker return osb->recovery_thread_task != NULL; 109553abd04SJoel Becker } 110553abd04SJoel Becker 111553abd04SJoel Becker void ocfs2_recovery_exit(struct ocfs2_super *osb) 112553abd04SJoel Becker { 113553abd04SJoel Becker struct ocfs2_recovery_map *rm; 114553abd04SJoel Becker 115553abd04SJoel Becker /* disable any new recovery threads and wait for any currently 116553abd04SJoel Becker * running ones to exit. Do this before setting the vol_state. */ 117553abd04SJoel Becker mutex_lock(&osb->recovery_lock); 118553abd04SJoel Becker osb->disable_recovery = 1; 119553abd04SJoel Becker mutex_unlock(&osb->recovery_lock); 120553abd04SJoel Becker wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); 121553abd04SJoel Becker 122553abd04SJoel Becker /* At this point, we know that no more recovery threads can be 123553abd04SJoel Becker * launched, so wait for any recovery completion work to 124553abd04SJoel Becker * complete. */ 125553abd04SJoel Becker flush_workqueue(ocfs2_wq); 126553abd04SJoel Becker 127553abd04SJoel Becker /* 128553abd04SJoel Becker * Now that recovery is shut down, and the osb is about to be 129553abd04SJoel Becker * freed, the osb_lock is not taken here. 130553abd04SJoel Becker */ 131553abd04SJoel Becker rm = osb->recovery_map; 132553abd04SJoel Becker /* XXX: Should we bug if there are dirty entries? */ 133553abd04SJoel Becker 134553abd04SJoel Becker kfree(rm); 135553abd04SJoel Becker } 136553abd04SJoel Becker 137553abd04SJoel Becker static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, 138553abd04SJoel Becker unsigned int node_num) 139553abd04SJoel Becker { 140553abd04SJoel Becker int i; 141553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 142553abd04SJoel Becker 143553abd04SJoel Becker assert_spin_locked(&osb->osb_lock); 144553abd04SJoel Becker 145553abd04SJoel Becker for (i = 0; i < rm->rm_used; i++) { 146553abd04SJoel Becker if (rm->rm_entries[i] == node_num) 147553abd04SJoel Becker return 1; 148553abd04SJoel Becker } 149553abd04SJoel Becker 150553abd04SJoel Becker return 0; 151553abd04SJoel Becker } 152553abd04SJoel Becker 153553abd04SJoel Becker /* Behaves like test-and-set. Returns the previous value */ 154553abd04SJoel Becker static int ocfs2_recovery_map_set(struct ocfs2_super *osb, 155553abd04SJoel Becker unsigned int node_num) 156553abd04SJoel Becker { 157553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 158553abd04SJoel Becker 159553abd04SJoel Becker spin_lock(&osb->osb_lock); 160553abd04SJoel Becker if (__ocfs2_recovery_map_test(osb, node_num)) { 161553abd04SJoel Becker spin_unlock(&osb->osb_lock); 162553abd04SJoel Becker return 1; 163553abd04SJoel Becker } 164553abd04SJoel Becker 165553abd04SJoel Becker /* XXX: Can this be exploited? Not from o2dlm... */ 166553abd04SJoel Becker BUG_ON(rm->rm_used >= osb->max_slots); 167553abd04SJoel Becker 168553abd04SJoel Becker rm->rm_entries[rm->rm_used] = node_num; 169553abd04SJoel Becker rm->rm_used++; 170553abd04SJoel Becker spin_unlock(&osb->osb_lock); 171553abd04SJoel Becker 172553abd04SJoel Becker return 0; 173553abd04SJoel Becker } 174553abd04SJoel Becker 175553abd04SJoel Becker static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, 176553abd04SJoel Becker unsigned int node_num) 177553abd04SJoel Becker { 178553abd04SJoel Becker int i; 179553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 180553abd04SJoel Becker 181553abd04SJoel Becker spin_lock(&osb->osb_lock); 182553abd04SJoel Becker 183553abd04SJoel Becker for (i = 0; i < rm->rm_used; i++) { 184553abd04SJoel Becker if (rm->rm_entries[i] == node_num) 185553abd04SJoel Becker break; 186553abd04SJoel Becker } 187553abd04SJoel Becker 188553abd04SJoel Becker if (i < rm->rm_used) { 189553abd04SJoel Becker /* XXX: be careful with the pointer math */ 190553abd04SJoel Becker memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), 191553abd04SJoel Becker (rm->rm_used - i - 1) * sizeof(unsigned int)); 192553abd04SJoel Becker rm->rm_used--; 193553abd04SJoel Becker } 194553abd04SJoel Becker 195553abd04SJoel Becker spin_unlock(&osb->osb_lock); 196553abd04SJoel Becker } 197553abd04SJoel Becker 198ccd979bdSMark Fasheh static int ocfs2_commit_cache(struct ocfs2_super *osb) 199ccd979bdSMark Fasheh { 200ccd979bdSMark Fasheh int status = 0; 201ccd979bdSMark Fasheh unsigned int flushed; 202ccd979bdSMark Fasheh unsigned long old_id; 203ccd979bdSMark Fasheh struct ocfs2_journal *journal = NULL; 204ccd979bdSMark Fasheh 205ccd979bdSMark Fasheh mlog_entry_void(); 206ccd979bdSMark Fasheh 207ccd979bdSMark Fasheh journal = osb->journal; 208ccd979bdSMark Fasheh 209ccd979bdSMark Fasheh /* Flush all pending commits and checkpoint the journal. */ 210ccd979bdSMark Fasheh down_write(&journal->j_trans_barrier); 211ccd979bdSMark Fasheh 212ccd979bdSMark Fasheh if (atomic_read(&journal->j_num_trans) == 0) { 213ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 214ccd979bdSMark Fasheh mlog(0, "No transactions for me to flush!\n"); 215ccd979bdSMark Fasheh goto finally; 216ccd979bdSMark Fasheh } 217ccd979bdSMark Fasheh 2182b4e30fbSJoel Becker jbd2_journal_lock_updates(journal->j_journal); 2192b4e30fbSJoel Becker status = jbd2_journal_flush(journal->j_journal); 2202b4e30fbSJoel Becker jbd2_journal_unlock_updates(journal->j_journal); 221ccd979bdSMark Fasheh if (status < 0) { 222ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 223ccd979bdSMark Fasheh mlog_errno(status); 224ccd979bdSMark Fasheh goto finally; 225ccd979bdSMark Fasheh } 226ccd979bdSMark Fasheh 227ccd979bdSMark Fasheh old_id = ocfs2_inc_trans_id(journal); 228ccd979bdSMark Fasheh 229ccd979bdSMark Fasheh flushed = atomic_read(&journal->j_num_trans); 230ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 231ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 232ccd979bdSMark Fasheh 233ccd979bdSMark Fasheh mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", 234ccd979bdSMark Fasheh journal->j_trans_id, flushed); 235ccd979bdSMark Fasheh 23634d024f8SMark Fasheh ocfs2_wake_downconvert_thread(osb); 237ccd979bdSMark Fasheh wake_up(&journal->j_checkpointed); 238ccd979bdSMark Fasheh finally: 239ccd979bdSMark Fasheh mlog_exit(status); 240ccd979bdSMark Fasheh return status; 241ccd979bdSMark Fasheh } 242ccd979bdSMark Fasheh 243ccd979bdSMark Fasheh /* pass it NULL and it will allocate a new handle object for you. If 244ccd979bdSMark Fasheh * you pass it a handle however, it may still return error, in which 245ccd979bdSMark Fasheh * case it has free'd the passed handle for you. */ 2461fabe148SMark Fasheh handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) 247ccd979bdSMark Fasheh { 248ccd979bdSMark Fasheh journal_t *journal = osb->journal->j_journal; 2491fabe148SMark Fasheh handle_t *handle; 250ccd979bdSMark Fasheh 251ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb || !osb->journal->j_journal); 252ccd979bdSMark Fasheh 25365eff9ccSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 25465eff9ccSMark Fasheh return ERR_PTR(-EROFS); 255ccd979bdSMark Fasheh 256ccd979bdSMark Fasheh BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); 257ccd979bdSMark Fasheh BUG_ON(max_buffs <= 0); 258ccd979bdSMark Fasheh 259ccd979bdSMark Fasheh /* JBD might support this, but our journalling code doesn't yet. */ 260ccd979bdSMark Fasheh if (journal_current_handle()) { 261ccd979bdSMark Fasheh mlog(ML_ERROR, "Recursive transaction attempted!\n"); 262ccd979bdSMark Fasheh BUG(); 263ccd979bdSMark Fasheh } 264ccd979bdSMark Fasheh 265ccd979bdSMark Fasheh down_read(&osb->journal->j_trans_barrier); 266ccd979bdSMark Fasheh 2672b4e30fbSJoel Becker handle = jbd2_journal_start(journal, max_buffs); 2681fabe148SMark Fasheh if (IS_ERR(handle)) { 269ccd979bdSMark Fasheh up_read(&osb->journal->j_trans_barrier); 270ccd979bdSMark Fasheh 2711fabe148SMark Fasheh mlog_errno(PTR_ERR(handle)); 272ccd979bdSMark Fasheh 273ccd979bdSMark Fasheh if (is_journal_aborted(journal)) { 274ccd979bdSMark Fasheh ocfs2_abort(osb->sb, "Detected aborted journal"); 2751fabe148SMark Fasheh handle = ERR_PTR(-EROFS); 276ccd979bdSMark Fasheh } 277c271c5c2SSunil Mushran } else { 278c271c5c2SSunil Mushran if (!ocfs2_mount_local(osb)) 279ccd979bdSMark Fasheh atomic_inc(&(osb->journal->j_num_trans)); 280c271c5c2SSunil Mushran } 281ccd979bdSMark Fasheh 282ccd979bdSMark Fasheh return handle; 283ccd979bdSMark Fasheh } 284ccd979bdSMark Fasheh 2851fabe148SMark Fasheh int ocfs2_commit_trans(struct ocfs2_super *osb, 2861fabe148SMark Fasheh handle_t *handle) 287ccd979bdSMark Fasheh { 2881fabe148SMark Fasheh int ret; 28902dc1af4SMark Fasheh struct ocfs2_journal *journal = osb->journal; 290ccd979bdSMark Fasheh 291ccd979bdSMark Fasheh BUG_ON(!handle); 292ccd979bdSMark Fasheh 2932b4e30fbSJoel Becker ret = jbd2_journal_stop(handle); 2941fabe148SMark Fasheh if (ret < 0) 2951fabe148SMark Fasheh mlog_errno(ret); 296ccd979bdSMark Fasheh 297ccd979bdSMark Fasheh up_read(&journal->j_trans_barrier); 298ccd979bdSMark Fasheh 2991fabe148SMark Fasheh return ret; 300ccd979bdSMark Fasheh } 301ccd979bdSMark Fasheh 302ccd979bdSMark Fasheh /* 303ccd979bdSMark Fasheh * 'nblocks' is what you want to add to the current 304ccd979bdSMark Fasheh * transaction. extend_trans will either extend the current handle by 305ccd979bdSMark Fasheh * nblocks, or commit it and start a new one with nblocks credits. 306ccd979bdSMark Fasheh * 3072b4e30fbSJoel Becker * This might call jbd2_journal_restart() which will commit dirty buffers 308e8aed345SMark Fasheh * and then restart the transaction. Before calling 309e8aed345SMark Fasheh * ocfs2_extend_trans(), any changed blocks should have been 310e8aed345SMark Fasheh * dirtied. After calling it, all blocks which need to be changed must 311e8aed345SMark Fasheh * go through another set of journal_access/journal_dirty calls. 312e8aed345SMark Fasheh * 313ccd979bdSMark Fasheh * WARNING: This will not release any semaphores or disk locks taken 314ccd979bdSMark Fasheh * during the transaction, so make sure they were taken *before* 315ccd979bdSMark Fasheh * start_trans or we'll have ordering deadlocks. 316ccd979bdSMark Fasheh * 317ccd979bdSMark Fasheh * WARNING2: Note that we do *not* drop j_trans_barrier here. This is 318ccd979bdSMark Fasheh * good because transaction ids haven't yet been recorded on the 319ccd979bdSMark Fasheh * cluster locks associated with this handle. 320ccd979bdSMark Fasheh */ 3211fc58146SMark Fasheh int ocfs2_extend_trans(handle_t *handle, int nblocks) 322ccd979bdSMark Fasheh { 323ccd979bdSMark Fasheh int status; 324ccd979bdSMark Fasheh 325ccd979bdSMark Fasheh BUG_ON(!handle); 326ccd979bdSMark Fasheh BUG_ON(!nblocks); 327ccd979bdSMark Fasheh 328ccd979bdSMark Fasheh mlog_entry_void(); 329ccd979bdSMark Fasheh 330ccd979bdSMark Fasheh mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); 331ccd979bdSMark Fasheh 332e407e397SJoel Becker #ifdef CONFIG_OCFS2_DEBUG_FS 3330879c584SMark Fasheh status = 1; 3340879c584SMark Fasheh #else 3352b4e30fbSJoel Becker status = jbd2_journal_extend(handle, nblocks); 336ccd979bdSMark Fasheh if (status < 0) { 337ccd979bdSMark Fasheh mlog_errno(status); 338ccd979bdSMark Fasheh goto bail; 339ccd979bdSMark Fasheh } 3400879c584SMark Fasheh #endif 341ccd979bdSMark Fasheh 342ccd979bdSMark Fasheh if (status > 0) { 3432b4e30fbSJoel Becker mlog(0, 3442b4e30fbSJoel Becker "jbd2_journal_extend failed, trying " 3452b4e30fbSJoel Becker "jbd2_journal_restart\n"); 3462b4e30fbSJoel Becker status = jbd2_journal_restart(handle, nblocks); 347ccd979bdSMark Fasheh if (status < 0) { 348ccd979bdSMark Fasheh mlog_errno(status); 349ccd979bdSMark Fasheh goto bail; 350ccd979bdSMark Fasheh } 35101ddf1e1SMark Fasheh } 352ccd979bdSMark Fasheh 353ccd979bdSMark Fasheh status = 0; 354ccd979bdSMark Fasheh bail: 355ccd979bdSMark Fasheh 356ccd979bdSMark Fasheh mlog_exit(status); 357ccd979bdSMark Fasheh return status; 358ccd979bdSMark Fasheh } 359ccd979bdSMark Fasheh 3601fabe148SMark Fasheh int ocfs2_journal_access(handle_t *handle, 361ccd979bdSMark Fasheh struct inode *inode, 362ccd979bdSMark Fasheh struct buffer_head *bh, 363ccd979bdSMark Fasheh int type) 364ccd979bdSMark Fasheh { 365ccd979bdSMark Fasheh int status; 366ccd979bdSMark Fasheh 367ccd979bdSMark Fasheh BUG_ON(!inode); 368ccd979bdSMark Fasheh BUG_ON(!handle); 369ccd979bdSMark Fasheh BUG_ON(!bh); 370ccd979bdSMark Fasheh 371205f87f6SBadari Pulavarty mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", 372ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr, type, 373ccd979bdSMark Fasheh (type == OCFS2_JOURNAL_ACCESS_CREATE) ? 374ccd979bdSMark Fasheh "OCFS2_JOURNAL_ACCESS_CREATE" : 375ccd979bdSMark Fasheh "OCFS2_JOURNAL_ACCESS_WRITE", 376ccd979bdSMark Fasheh bh->b_size); 377ccd979bdSMark Fasheh 378ccd979bdSMark Fasheh /* we can safely remove this assertion after testing. */ 379ccd979bdSMark Fasheh if (!buffer_uptodate(bh)) { 380ccd979bdSMark Fasheh mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); 381ccd979bdSMark Fasheh mlog(ML_ERROR, "b_blocknr=%llu\n", 382ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 383ccd979bdSMark Fasheh BUG(); 384ccd979bdSMark Fasheh } 385ccd979bdSMark Fasheh 386ccd979bdSMark Fasheh /* Set the current transaction information on the inode so 387ccd979bdSMark Fasheh * that the locking code knows whether it can drop it's locks 388ccd979bdSMark Fasheh * on this inode or not. We're protected from the commit 389ccd979bdSMark Fasheh * thread updating the current transaction id until 390ccd979bdSMark Fasheh * ocfs2_commit_trans() because ocfs2_start_trans() took 391ccd979bdSMark Fasheh * j_trans_barrier for us. */ 392ccd979bdSMark Fasheh ocfs2_set_inode_lock_trans(OCFS2_SB(inode->i_sb)->journal, inode); 393ccd979bdSMark Fasheh 394251b6eccSMark Fasheh mutex_lock(&OCFS2_I(inode)->ip_io_mutex); 395ccd979bdSMark Fasheh switch (type) { 396ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_CREATE: 397ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_WRITE: 3982b4e30fbSJoel Becker status = jbd2_journal_get_write_access(handle, bh); 399ccd979bdSMark Fasheh break; 400ccd979bdSMark Fasheh 401ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_UNDO: 4022b4e30fbSJoel Becker status = jbd2_journal_get_undo_access(handle, bh); 403ccd979bdSMark Fasheh break; 404ccd979bdSMark Fasheh 405ccd979bdSMark Fasheh default: 406ccd979bdSMark Fasheh status = -EINVAL; 407ccd979bdSMark Fasheh mlog(ML_ERROR, "Uknown access type!\n"); 408ccd979bdSMark Fasheh } 409251b6eccSMark Fasheh mutex_unlock(&OCFS2_I(inode)->ip_io_mutex); 410ccd979bdSMark Fasheh 411ccd979bdSMark Fasheh if (status < 0) 412ccd979bdSMark Fasheh mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", 413ccd979bdSMark Fasheh status, type); 414ccd979bdSMark Fasheh 415ccd979bdSMark Fasheh mlog_exit(status); 416ccd979bdSMark Fasheh return status; 417ccd979bdSMark Fasheh } 418ccd979bdSMark Fasheh 4191fabe148SMark Fasheh int ocfs2_journal_dirty(handle_t *handle, 420ccd979bdSMark Fasheh struct buffer_head *bh) 421ccd979bdSMark Fasheh { 422ccd979bdSMark Fasheh int status; 423ccd979bdSMark Fasheh 424ccd979bdSMark Fasheh mlog_entry("(bh->b_blocknr=%llu)\n", 425ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 426ccd979bdSMark Fasheh 4272b4e30fbSJoel Becker status = jbd2_journal_dirty_metadata(handle, bh); 428ccd979bdSMark Fasheh if (status < 0) 429ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not dirty metadata buffer. " 430ccd979bdSMark Fasheh "(bh->b_blocknr=%llu)\n", 431ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 432ccd979bdSMark Fasheh 433ccd979bdSMark Fasheh mlog_exit(status); 434ccd979bdSMark Fasheh return status; 435ccd979bdSMark Fasheh } 436ccd979bdSMark Fasheh 4372b4e30fbSJoel Becker #ifdef CONFIG_OCFS2_COMPAT_JBD 438ccd979bdSMark Fasheh int ocfs2_journal_dirty_data(handle_t *handle, 439ccd979bdSMark Fasheh struct buffer_head *bh) 440ccd979bdSMark Fasheh { 441ccd979bdSMark Fasheh int err = journal_dirty_data(handle, bh); 442ccd979bdSMark Fasheh if (err) 443ccd979bdSMark Fasheh mlog_errno(err); 444ccd979bdSMark Fasheh /* TODO: When we can handle it, abort the handle and go RO on 445ccd979bdSMark Fasheh * error here. */ 446ccd979bdSMark Fasheh 447ccd979bdSMark Fasheh return err; 448ccd979bdSMark Fasheh } 4492b4e30fbSJoel Becker #endif 450ccd979bdSMark Fasheh 4512b4e30fbSJoel Becker #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) 452ccd979bdSMark Fasheh 453ccd979bdSMark Fasheh void ocfs2_set_journal_params(struct ocfs2_super *osb) 454ccd979bdSMark Fasheh { 455ccd979bdSMark Fasheh journal_t *journal = osb->journal->j_journal; 456d147b3d6SMark Fasheh unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; 457d147b3d6SMark Fasheh 458d147b3d6SMark Fasheh if (osb->osb_commit_interval) 459d147b3d6SMark Fasheh commit_interval = osb->osb_commit_interval; 460ccd979bdSMark Fasheh 461ccd979bdSMark Fasheh spin_lock(&journal->j_state_lock); 462d147b3d6SMark Fasheh journal->j_commit_interval = commit_interval; 463ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) 4642b4e30fbSJoel Becker journal->j_flags |= JBD2_BARRIER; 465ccd979bdSMark Fasheh else 4662b4e30fbSJoel Becker journal->j_flags &= ~JBD2_BARRIER; 467ccd979bdSMark Fasheh spin_unlock(&journal->j_state_lock); 468ccd979bdSMark Fasheh } 469ccd979bdSMark Fasheh 470ccd979bdSMark Fasheh int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) 471ccd979bdSMark Fasheh { 472ccd979bdSMark Fasheh int status = -1; 473ccd979bdSMark Fasheh struct inode *inode = NULL; /* the journal inode */ 474ccd979bdSMark Fasheh journal_t *j_journal = NULL; 475ccd979bdSMark Fasheh struct ocfs2_dinode *di = NULL; 476ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 477ccd979bdSMark Fasheh struct ocfs2_super *osb; 478e63aecb6SMark Fasheh int inode_lock = 0; 479ccd979bdSMark Fasheh 480ccd979bdSMark Fasheh mlog_entry_void(); 481ccd979bdSMark Fasheh 482ccd979bdSMark Fasheh BUG_ON(!journal); 483ccd979bdSMark Fasheh 484ccd979bdSMark Fasheh osb = journal->j_osb; 485ccd979bdSMark Fasheh 486ccd979bdSMark Fasheh /* already have the inode for our journal */ 487ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 488ccd979bdSMark Fasheh osb->slot_num); 489ccd979bdSMark Fasheh if (inode == NULL) { 490ccd979bdSMark Fasheh status = -EACCES; 491ccd979bdSMark Fasheh mlog_errno(status); 492ccd979bdSMark Fasheh goto done; 493ccd979bdSMark Fasheh } 494ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 495ccd979bdSMark Fasheh mlog(ML_ERROR, "access error (bad inode)\n"); 496ccd979bdSMark Fasheh iput(inode); 497ccd979bdSMark Fasheh inode = NULL; 498ccd979bdSMark Fasheh status = -EACCES; 499ccd979bdSMark Fasheh goto done; 500ccd979bdSMark Fasheh } 501ccd979bdSMark Fasheh 502ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 503ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count++; 504ccd979bdSMark Fasheh 5056eff5790SMark Fasheh /* Skip recovery waits here - journal inode metadata never 5066eff5790SMark Fasheh * changes in a live cluster so it can be considered an 5076eff5790SMark Fasheh * exception to the rule. */ 508e63aecb6SMark Fasheh status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); 509ccd979bdSMark Fasheh if (status < 0) { 510ccd979bdSMark Fasheh if (status != -ERESTARTSYS) 511ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not get lock on journal!\n"); 512ccd979bdSMark Fasheh goto done; 513ccd979bdSMark Fasheh } 514ccd979bdSMark Fasheh 515e63aecb6SMark Fasheh inode_lock = 1; 516ccd979bdSMark Fasheh di = (struct ocfs2_dinode *)bh->b_data; 517ccd979bdSMark Fasheh 518ccd979bdSMark Fasheh if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) { 519ccd979bdSMark Fasheh mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", 520ccd979bdSMark Fasheh inode->i_size); 521ccd979bdSMark Fasheh status = -EINVAL; 522ccd979bdSMark Fasheh goto done; 523ccd979bdSMark Fasheh } 524ccd979bdSMark Fasheh 525ccd979bdSMark Fasheh mlog(0, "inode->i_size = %lld\n", inode->i_size); 5265515eff8SAndrew Morton mlog(0, "inode->i_blocks = %llu\n", 5275515eff8SAndrew Morton (unsigned long long)inode->i_blocks); 528ccd979bdSMark Fasheh mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters); 529ccd979bdSMark Fasheh 530ccd979bdSMark Fasheh /* call the kernels journal init function now */ 5312b4e30fbSJoel Becker j_journal = jbd2_journal_init_inode(inode); 532ccd979bdSMark Fasheh if (j_journal == NULL) { 533ccd979bdSMark Fasheh mlog(ML_ERROR, "Linux journal layer error\n"); 534ccd979bdSMark Fasheh status = -EINVAL; 535ccd979bdSMark Fasheh goto done; 536ccd979bdSMark Fasheh } 537ccd979bdSMark Fasheh 5382b4e30fbSJoel Becker mlog(0, "Returned from jbd2_journal_init_inode\n"); 539ccd979bdSMark Fasheh mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen); 540ccd979bdSMark Fasheh 541ccd979bdSMark Fasheh *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & 542ccd979bdSMark Fasheh OCFS2_JOURNAL_DIRTY_FL); 543ccd979bdSMark Fasheh 544ccd979bdSMark Fasheh journal->j_journal = j_journal; 545ccd979bdSMark Fasheh journal->j_inode = inode; 546ccd979bdSMark Fasheh journal->j_bh = bh; 547ccd979bdSMark Fasheh 548ccd979bdSMark Fasheh ocfs2_set_journal_params(osb); 549ccd979bdSMark Fasheh 550ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_LOADED; 551ccd979bdSMark Fasheh 552ccd979bdSMark Fasheh status = 0; 553ccd979bdSMark Fasheh done: 554ccd979bdSMark Fasheh if (status < 0) { 555e63aecb6SMark Fasheh if (inode_lock) 556e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 557ccd979bdSMark Fasheh brelse(bh); 558ccd979bdSMark Fasheh if (inode) { 559ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count--; 560ccd979bdSMark Fasheh iput(inode); 561ccd979bdSMark Fasheh } 562ccd979bdSMark Fasheh } 563ccd979bdSMark Fasheh 564ccd979bdSMark Fasheh mlog_exit(status); 565ccd979bdSMark Fasheh return status; 566ccd979bdSMark Fasheh } 567ccd979bdSMark Fasheh 568539d8264SSunil Mushran static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) 569539d8264SSunil Mushran { 570539d8264SSunil Mushran le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); 571539d8264SSunil Mushran } 572539d8264SSunil Mushran 573539d8264SSunil Mushran static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) 574539d8264SSunil Mushran { 575539d8264SSunil Mushran return le32_to_cpu(di->id1.journal1.ij_recovery_generation); 576539d8264SSunil Mushran } 577539d8264SSunil Mushran 578ccd979bdSMark Fasheh static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, 579539d8264SSunil Mushran int dirty, int replayed) 580ccd979bdSMark Fasheh { 581ccd979bdSMark Fasheh int status; 582ccd979bdSMark Fasheh unsigned int flags; 583ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 584ccd979bdSMark Fasheh struct buffer_head *bh = journal->j_bh; 585ccd979bdSMark Fasheh struct ocfs2_dinode *fe; 586ccd979bdSMark Fasheh 587ccd979bdSMark Fasheh mlog_entry_void(); 588ccd979bdSMark Fasheh 589ccd979bdSMark Fasheh fe = (struct ocfs2_dinode *)bh->b_data; 59010995aa2SJoel Becker 59110995aa2SJoel Becker /* The journal bh on the osb always comes from ocfs2_journal_init() 59210995aa2SJoel Becker * and was validated there inside ocfs2_inode_lock_full(). It's a 59310995aa2SJoel Becker * code bug if we mess it up. */ 59410995aa2SJoel Becker BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); 595ccd979bdSMark Fasheh 596ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 597ccd979bdSMark Fasheh if (dirty) 598ccd979bdSMark Fasheh flags |= OCFS2_JOURNAL_DIRTY_FL; 599ccd979bdSMark Fasheh else 600ccd979bdSMark Fasheh flags &= ~OCFS2_JOURNAL_DIRTY_FL; 601ccd979bdSMark Fasheh fe->id1.journal1.ij_flags = cpu_to_le32(flags); 602ccd979bdSMark Fasheh 603539d8264SSunil Mushran if (replayed) 604539d8264SSunil Mushran ocfs2_bump_recovery_generation(fe); 605539d8264SSunil Mushran 606ccd979bdSMark Fasheh status = ocfs2_write_block(osb, bh, journal->j_inode); 607ccd979bdSMark Fasheh if (status < 0) 608ccd979bdSMark Fasheh mlog_errno(status); 609ccd979bdSMark Fasheh 610ccd979bdSMark Fasheh mlog_exit(status); 611ccd979bdSMark Fasheh return status; 612ccd979bdSMark Fasheh } 613ccd979bdSMark Fasheh 614ccd979bdSMark Fasheh /* 615ccd979bdSMark Fasheh * If the journal has been kmalloc'd it needs to be freed after this 616ccd979bdSMark Fasheh * call. 617ccd979bdSMark Fasheh */ 618ccd979bdSMark Fasheh void ocfs2_journal_shutdown(struct ocfs2_super *osb) 619ccd979bdSMark Fasheh { 620ccd979bdSMark Fasheh struct ocfs2_journal *journal = NULL; 621ccd979bdSMark Fasheh int status = 0; 622ccd979bdSMark Fasheh struct inode *inode = NULL; 623ccd979bdSMark Fasheh int num_running_trans = 0; 624ccd979bdSMark Fasheh 625ccd979bdSMark Fasheh mlog_entry_void(); 626ccd979bdSMark Fasheh 627ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb); 628ccd979bdSMark Fasheh 629ccd979bdSMark Fasheh journal = osb->journal; 630ccd979bdSMark Fasheh if (!journal) 631ccd979bdSMark Fasheh goto done; 632ccd979bdSMark Fasheh 633ccd979bdSMark Fasheh inode = journal->j_inode; 634ccd979bdSMark Fasheh 635ccd979bdSMark Fasheh if (journal->j_state != OCFS2_JOURNAL_LOADED) 636ccd979bdSMark Fasheh goto done; 637ccd979bdSMark Fasheh 6382b4e30fbSJoel Becker /* need to inc inode use count - jbd2_journal_destroy will iput. */ 639ccd979bdSMark Fasheh if (!igrab(inode)) 640ccd979bdSMark Fasheh BUG(); 641ccd979bdSMark Fasheh 642ccd979bdSMark Fasheh num_running_trans = atomic_read(&(osb->journal->j_num_trans)); 643ccd979bdSMark Fasheh if (num_running_trans > 0) 644ccd979bdSMark Fasheh mlog(0, "Shutting down journal: must wait on %d " 645ccd979bdSMark Fasheh "running transactions!\n", 646ccd979bdSMark Fasheh num_running_trans); 647ccd979bdSMark Fasheh 648ccd979bdSMark Fasheh /* Do a commit_cache here. It will flush our journal, *and* 649ccd979bdSMark Fasheh * release any locks that are still held. 650ccd979bdSMark Fasheh * set the SHUTDOWN flag and release the trans lock. 651ccd979bdSMark Fasheh * the commit thread will take the trans lock for us below. */ 652ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; 653ccd979bdSMark Fasheh 654ccd979bdSMark Fasheh /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not 655ccd979bdSMark Fasheh * drop the trans_lock (which we want to hold until we 656ccd979bdSMark Fasheh * completely destroy the journal. */ 657ccd979bdSMark Fasheh if (osb->commit_task) { 658ccd979bdSMark Fasheh /* Wait for the commit thread */ 659ccd979bdSMark Fasheh mlog(0, "Waiting for ocfs2commit to exit....\n"); 660ccd979bdSMark Fasheh kthread_stop(osb->commit_task); 661ccd979bdSMark Fasheh osb->commit_task = NULL; 662ccd979bdSMark Fasheh } 663ccd979bdSMark Fasheh 664ccd979bdSMark Fasheh BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); 665ccd979bdSMark Fasheh 666c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) { 6672b4e30fbSJoel Becker jbd2_journal_lock_updates(journal->j_journal); 6682b4e30fbSJoel Becker status = jbd2_journal_flush(journal->j_journal); 6692b4e30fbSJoel Becker jbd2_journal_unlock_updates(journal->j_journal); 670c271c5c2SSunil Mushran if (status < 0) 671c271c5c2SSunil Mushran mlog_errno(status); 672c271c5c2SSunil Mushran } 673c271c5c2SSunil Mushran 674c271c5c2SSunil Mushran if (status == 0) { 675c271c5c2SSunil Mushran /* 676c271c5c2SSunil Mushran * Do not toggle if flush was unsuccessful otherwise 677c271c5c2SSunil Mushran * will leave dirty metadata in a "clean" journal 678c271c5c2SSunil Mushran */ 679539d8264SSunil Mushran status = ocfs2_journal_toggle_dirty(osb, 0, 0); 680ccd979bdSMark Fasheh if (status < 0) 681ccd979bdSMark Fasheh mlog_errno(status); 682c271c5c2SSunil Mushran } 683ccd979bdSMark Fasheh 684ccd979bdSMark Fasheh /* Shutdown the kernel journal system */ 6852b4e30fbSJoel Becker jbd2_journal_destroy(journal->j_journal); 686ae0dff68SSunil Mushran journal->j_journal = NULL; 687ccd979bdSMark Fasheh 688ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count--; 689ccd979bdSMark Fasheh 690ccd979bdSMark Fasheh /* unlock our journal */ 691e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 692ccd979bdSMark Fasheh 693ccd979bdSMark Fasheh brelse(journal->j_bh); 694ccd979bdSMark Fasheh journal->j_bh = NULL; 695ccd979bdSMark Fasheh 696ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 697ccd979bdSMark Fasheh 698ccd979bdSMark Fasheh // up_write(&journal->j_trans_barrier); 699ccd979bdSMark Fasheh done: 700ccd979bdSMark Fasheh if (inode) 701ccd979bdSMark Fasheh iput(inode); 702ccd979bdSMark Fasheh mlog_exit_void(); 703ccd979bdSMark Fasheh } 704ccd979bdSMark Fasheh 705ccd979bdSMark Fasheh static void ocfs2_clear_journal_error(struct super_block *sb, 706ccd979bdSMark Fasheh journal_t *journal, 707ccd979bdSMark Fasheh int slot) 708ccd979bdSMark Fasheh { 709ccd979bdSMark Fasheh int olderr; 710ccd979bdSMark Fasheh 7112b4e30fbSJoel Becker olderr = jbd2_journal_errno(journal); 712ccd979bdSMark Fasheh if (olderr) { 713ccd979bdSMark Fasheh mlog(ML_ERROR, "File system error %d recorded in " 714ccd979bdSMark Fasheh "journal %u.\n", olderr, slot); 715ccd979bdSMark Fasheh mlog(ML_ERROR, "File system on device %s needs checking.\n", 716ccd979bdSMark Fasheh sb->s_id); 717ccd979bdSMark Fasheh 7182b4e30fbSJoel Becker jbd2_journal_ack_err(journal); 7192b4e30fbSJoel Becker jbd2_journal_clear_err(journal); 720ccd979bdSMark Fasheh } 721ccd979bdSMark Fasheh } 722ccd979bdSMark Fasheh 723539d8264SSunil Mushran int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) 724ccd979bdSMark Fasheh { 725ccd979bdSMark Fasheh int status = 0; 726ccd979bdSMark Fasheh struct ocfs2_super *osb; 727ccd979bdSMark Fasheh 728ccd979bdSMark Fasheh mlog_entry_void(); 729ccd979bdSMark Fasheh 730b1f3550fSJulia Lawall BUG_ON(!journal); 731ccd979bdSMark Fasheh 732ccd979bdSMark Fasheh osb = journal->j_osb; 733ccd979bdSMark Fasheh 7342b4e30fbSJoel Becker status = jbd2_journal_load(journal->j_journal); 735ccd979bdSMark Fasheh if (status < 0) { 736ccd979bdSMark Fasheh mlog(ML_ERROR, "Failed to load journal!\n"); 737ccd979bdSMark Fasheh goto done; 738ccd979bdSMark Fasheh } 739ccd979bdSMark Fasheh 740ccd979bdSMark Fasheh ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); 741ccd979bdSMark Fasheh 742539d8264SSunil Mushran status = ocfs2_journal_toggle_dirty(osb, 1, replayed); 743ccd979bdSMark Fasheh if (status < 0) { 744ccd979bdSMark Fasheh mlog_errno(status); 745ccd979bdSMark Fasheh goto done; 746ccd979bdSMark Fasheh } 747ccd979bdSMark Fasheh 748ccd979bdSMark Fasheh /* Launch the commit thread */ 749c271c5c2SSunil Mushran if (!local) { 750c271c5c2SSunil Mushran osb->commit_task = kthread_run(ocfs2_commit_thread, osb, 751c271c5c2SSunil Mushran "ocfs2cmt"); 752ccd979bdSMark Fasheh if (IS_ERR(osb->commit_task)) { 753ccd979bdSMark Fasheh status = PTR_ERR(osb->commit_task); 754ccd979bdSMark Fasheh osb->commit_task = NULL; 755c271c5c2SSunil Mushran mlog(ML_ERROR, "unable to launch ocfs2commit thread, " 756c271c5c2SSunil Mushran "error=%d", status); 757ccd979bdSMark Fasheh goto done; 758ccd979bdSMark Fasheh } 759c271c5c2SSunil Mushran } else 760c271c5c2SSunil Mushran osb->commit_task = NULL; 761ccd979bdSMark Fasheh 762ccd979bdSMark Fasheh done: 763ccd979bdSMark Fasheh mlog_exit(status); 764ccd979bdSMark Fasheh return status; 765ccd979bdSMark Fasheh } 766ccd979bdSMark Fasheh 767ccd979bdSMark Fasheh 768ccd979bdSMark Fasheh /* 'full' flag tells us whether we clear out all blocks or if we just 769ccd979bdSMark Fasheh * mark the journal clean */ 770ccd979bdSMark Fasheh int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) 771ccd979bdSMark Fasheh { 772ccd979bdSMark Fasheh int status; 773ccd979bdSMark Fasheh 774ccd979bdSMark Fasheh mlog_entry_void(); 775ccd979bdSMark Fasheh 776ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!journal); 777ccd979bdSMark Fasheh 7782b4e30fbSJoel Becker status = jbd2_journal_wipe(journal->j_journal, full); 779ccd979bdSMark Fasheh if (status < 0) { 780ccd979bdSMark Fasheh mlog_errno(status); 781ccd979bdSMark Fasheh goto bail; 782ccd979bdSMark Fasheh } 783ccd979bdSMark Fasheh 784539d8264SSunil Mushran status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); 785ccd979bdSMark Fasheh if (status < 0) 786ccd979bdSMark Fasheh mlog_errno(status); 787ccd979bdSMark Fasheh 788ccd979bdSMark Fasheh bail: 789ccd979bdSMark Fasheh mlog_exit(status); 790ccd979bdSMark Fasheh return status; 791ccd979bdSMark Fasheh } 792ccd979bdSMark Fasheh 793553abd04SJoel Becker static int ocfs2_recovery_completed(struct ocfs2_super *osb) 794553abd04SJoel Becker { 795553abd04SJoel Becker int empty; 796553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 797553abd04SJoel Becker 798553abd04SJoel Becker spin_lock(&osb->osb_lock); 799553abd04SJoel Becker empty = (rm->rm_used == 0); 800553abd04SJoel Becker spin_unlock(&osb->osb_lock); 801553abd04SJoel Becker 802553abd04SJoel Becker return empty; 803553abd04SJoel Becker } 804553abd04SJoel Becker 805553abd04SJoel Becker void ocfs2_wait_for_recovery(struct ocfs2_super *osb) 806553abd04SJoel Becker { 807553abd04SJoel Becker wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); 808553abd04SJoel Becker } 809553abd04SJoel Becker 810ccd979bdSMark Fasheh /* 811ccd979bdSMark Fasheh * JBD Might read a cached version of another nodes journal file. We 812ccd979bdSMark Fasheh * don't want this as this file changes often and we get no 813ccd979bdSMark Fasheh * notification on those changes. The only way to be sure that we've 814ccd979bdSMark Fasheh * got the most up to date version of those blocks then is to force 815ccd979bdSMark Fasheh * read them off disk. Just searching through the buffer cache won't 816ccd979bdSMark Fasheh * work as there may be pages backing this file which are still marked 817ccd979bdSMark Fasheh * up to date. We know things can't change on this file underneath us 818ccd979bdSMark Fasheh * as we have the lock by now :) 819ccd979bdSMark Fasheh */ 820ccd979bdSMark Fasheh static int ocfs2_force_read_journal(struct inode *inode) 821ccd979bdSMark Fasheh { 822ccd979bdSMark Fasheh int status = 0; 8234f902c37SMark Fasheh int i; 8248110b073SMark Fasheh u64 v_blkno, p_blkno, p_blocks, num_blocks; 8254f902c37SMark Fasheh #define CONCURRENT_JOURNAL_FILL 32ULL 826ccd979bdSMark Fasheh struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; 827ccd979bdSMark Fasheh 828ccd979bdSMark Fasheh mlog_entry_void(); 829ccd979bdSMark Fasheh 830ccd979bdSMark Fasheh memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); 831ccd979bdSMark Fasheh 8328110b073SMark Fasheh num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size); 833ccd979bdSMark Fasheh v_blkno = 0; 8348110b073SMark Fasheh while (v_blkno < num_blocks) { 835ccd979bdSMark Fasheh status = ocfs2_extent_map_get_blocks(inode, v_blkno, 83649cb8d2dSMark Fasheh &p_blkno, &p_blocks, NULL); 837ccd979bdSMark Fasheh if (status < 0) { 838ccd979bdSMark Fasheh mlog_errno(status); 839ccd979bdSMark Fasheh goto bail; 840ccd979bdSMark Fasheh } 841ccd979bdSMark Fasheh 842ccd979bdSMark Fasheh if (p_blocks > CONCURRENT_JOURNAL_FILL) 843ccd979bdSMark Fasheh p_blocks = CONCURRENT_JOURNAL_FILL; 844ccd979bdSMark Fasheh 845dd4a2c2bSMark Fasheh /* We are reading journal data which should not 846dd4a2c2bSMark Fasheh * be put in the uptodate cache */ 847da1e9098SJoel Becker status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), 848da1e9098SJoel Becker p_blkno, p_blocks, bhs); 849ccd979bdSMark Fasheh if (status < 0) { 850ccd979bdSMark Fasheh mlog_errno(status); 851ccd979bdSMark Fasheh goto bail; 852ccd979bdSMark Fasheh } 853ccd979bdSMark Fasheh 854ccd979bdSMark Fasheh for(i = 0; i < p_blocks; i++) { 855ccd979bdSMark Fasheh brelse(bhs[i]); 856ccd979bdSMark Fasheh bhs[i] = NULL; 857ccd979bdSMark Fasheh } 858ccd979bdSMark Fasheh 859ccd979bdSMark Fasheh v_blkno += p_blocks; 860ccd979bdSMark Fasheh } 861ccd979bdSMark Fasheh 862ccd979bdSMark Fasheh bail: 863ccd979bdSMark Fasheh for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) 864ccd979bdSMark Fasheh brelse(bhs[i]); 865ccd979bdSMark Fasheh mlog_exit(status); 866ccd979bdSMark Fasheh return status; 867ccd979bdSMark Fasheh } 868ccd979bdSMark Fasheh 869ccd979bdSMark Fasheh struct ocfs2_la_recovery_item { 870ccd979bdSMark Fasheh struct list_head lri_list; 871ccd979bdSMark Fasheh int lri_slot; 872ccd979bdSMark Fasheh struct ocfs2_dinode *lri_la_dinode; 873ccd979bdSMark Fasheh struct ocfs2_dinode *lri_tl_dinode; 874ccd979bdSMark Fasheh }; 875ccd979bdSMark Fasheh 876ccd979bdSMark Fasheh /* Does the second half of the recovery process. By this point, the 877ccd979bdSMark Fasheh * node is marked clean and can actually be considered recovered, 878ccd979bdSMark Fasheh * hence it's no longer in the recovery map, but there's still some 879ccd979bdSMark Fasheh * cleanup we can do which shouldn't happen within the recovery thread 880ccd979bdSMark Fasheh * as locking in that context becomes very difficult if we are to take 881ccd979bdSMark Fasheh * recovering nodes into account. 882ccd979bdSMark Fasheh * 883ccd979bdSMark Fasheh * NOTE: This function can and will sleep on recovery of other nodes 884ccd979bdSMark Fasheh * during cluster locking, just like any other ocfs2 process. 885ccd979bdSMark Fasheh */ 886c4028958SDavid Howells void ocfs2_complete_recovery(struct work_struct *work) 887ccd979bdSMark Fasheh { 888ccd979bdSMark Fasheh int ret; 889c4028958SDavid Howells struct ocfs2_journal *journal = 890c4028958SDavid Howells container_of(work, struct ocfs2_journal, j_recovery_work); 891c4028958SDavid Howells struct ocfs2_super *osb = journal->j_osb; 892ccd979bdSMark Fasheh struct ocfs2_dinode *la_dinode, *tl_dinode; 893800deef3SChristoph Hellwig struct ocfs2_la_recovery_item *item, *n; 894ccd979bdSMark Fasheh LIST_HEAD(tmp_la_list); 895ccd979bdSMark Fasheh 896ccd979bdSMark Fasheh mlog_entry_void(); 897ccd979bdSMark Fasheh 898ccd979bdSMark Fasheh mlog(0, "completing recovery from keventd\n"); 899ccd979bdSMark Fasheh 900ccd979bdSMark Fasheh spin_lock(&journal->j_lock); 901ccd979bdSMark Fasheh list_splice_init(&journal->j_la_cleanups, &tmp_la_list); 902ccd979bdSMark Fasheh spin_unlock(&journal->j_lock); 903ccd979bdSMark Fasheh 904800deef3SChristoph Hellwig list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { 905ccd979bdSMark Fasheh list_del_init(&item->lri_list); 906ccd979bdSMark Fasheh 907ccd979bdSMark Fasheh mlog(0, "Complete recovery for slot %d\n", item->lri_slot); 908ccd979bdSMark Fasheh 909ccd979bdSMark Fasheh la_dinode = item->lri_la_dinode; 910ccd979bdSMark Fasheh if (la_dinode) { 911b0697053SMark Fasheh mlog(0, "Clean up local alloc %llu\n", 9121ca1a111SMark Fasheh (unsigned long long)le64_to_cpu(la_dinode->i_blkno)); 913ccd979bdSMark Fasheh 914ccd979bdSMark Fasheh ret = ocfs2_complete_local_alloc_recovery(osb, 915ccd979bdSMark Fasheh la_dinode); 916ccd979bdSMark Fasheh if (ret < 0) 917ccd979bdSMark Fasheh mlog_errno(ret); 918ccd979bdSMark Fasheh 919ccd979bdSMark Fasheh kfree(la_dinode); 920ccd979bdSMark Fasheh } 921ccd979bdSMark Fasheh 922ccd979bdSMark Fasheh tl_dinode = item->lri_tl_dinode; 923ccd979bdSMark Fasheh if (tl_dinode) { 924b0697053SMark Fasheh mlog(0, "Clean up truncate log %llu\n", 9251ca1a111SMark Fasheh (unsigned long long)le64_to_cpu(tl_dinode->i_blkno)); 926ccd979bdSMark Fasheh 927ccd979bdSMark Fasheh ret = ocfs2_complete_truncate_log_recovery(osb, 928ccd979bdSMark Fasheh tl_dinode); 929ccd979bdSMark Fasheh if (ret < 0) 930ccd979bdSMark Fasheh mlog_errno(ret); 931ccd979bdSMark Fasheh 932ccd979bdSMark Fasheh kfree(tl_dinode); 933ccd979bdSMark Fasheh } 934ccd979bdSMark Fasheh 935ccd979bdSMark Fasheh ret = ocfs2_recover_orphans(osb, item->lri_slot); 936ccd979bdSMark Fasheh if (ret < 0) 937ccd979bdSMark Fasheh mlog_errno(ret); 938ccd979bdSMark Fasheh 939ccd979bdSMark Fasheh kfree(item); 940ccd979bdSMark Fasheh } 941ccd979bdSMark Fasheh 942ccd979bdSMark Fasheh mlog(0, "Recovery completion\n"); 943ccd979bdSMark Fasheh mlog_exit_void(); 944ccd979bdSMark Fasheh } 945ccd979bdSMark Fasheh 946ccd979bdSMark Fasheh /* NOTE: This function always eats your references to la_dinode and 947ccd979bdSMark Fasheh * tl_dinode, either manually on error, or by passing them to 948ccd979bdSMark Fasheh * ocfs2_complete_recovery */ 949ccd979bdSMark Fasheh static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, 950ccd979bdSMark Fasheh int slot_num, 951ccd979bdSMark Fasheh struct ocfs2_dinode *la_dinode, 952ccd979bdSMark Fasheh struct ocfs2_dinode *tl_dinode) 953ccd979bdSMark Fasheh { 954ccd979bdSMark Fasheh struct ocfs2_la_recovery_item *item; 955ccd979bdSMark Fasheh 956afae00abSSunil Mushran item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); 957ccd979bdSMark Fasheh if (!item) { 958ccd979bdSMark Fasheh /* Though we wish to avoid it, we are in fact safe in 959ccd979bdSMark Fasheh * skipping local alloc cleanup as fsck.ocfs2 is more 960ccd979bdSMark Fasheh * than capable of reclaiming unused space. */ 961ccd979bdSMark Fasheh if (la_dinode) 962ccd979bdSMark Fasheh kfree(la_dinode); 963ccd979bdSMark Fasheh 964ccd979bdSMark Fasheh if (tl_dinode) 965ccd979bdSMark Fasheh kfree(tl_dinode); 966ccd979bdSMark Fasheh 967ccd979bdSMark Fasheh mlog_errno(-ENOMEM); 968ccd979bdSMark Fasheh return; 969ccd979bdSMark Fasheh } 970ccd979bdSMark Fasheh 971ccd979bdSMark Fasheh INIT_LIST_HEAD(&item->lri_list); 972ccd979bdSMark Fasheh item->lri_la_dinode = la_dinode; 973ccd979bdSMark Fasheh item->lri_slot = slot_num; 974ccd979bdSMark Fasheh item->lri_tl_dinode = tl_dinode; 975ccd979bdSMark Fasheh 976ccd979bdSMark Fasheh spin_lock(&journal->j_lock); 977ccd979bdSMark Fasheh list_add_tail(&item->lri_list, &journal->j_la_cleanups); 978ccd979bdSMark Fasheh queue_work(ocfs2_wq, &journal->j_recovery_work); 979ccd979bdSMark Fasheh spin_unlock(&journal->j_lock); 980ccd979bdSMark Fasheh } 981ccd979bdSMark Fasheh 982ccd979bdSMark Fasheh /* Called by the mount code to queue recovery the last part of 983ccd979bdSMark Fasheh * recovery for it's own slot. */ 984ccd979bdSMark Fasheh void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) 985ccd979bdSMark Fasheh { 986ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 987ccd979bdSMark Fasheh 988ccd979bdSMark Fasheh if (osb->dirty) { 989ccd979bdSMark Fasheh /* No need to queue up our truncate_log as regular 990ccd979bdSMark Fasheh * cleanup will catch that. */ 991ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(journal, 992ccd979bdSMark Fasheh osb->slot_num, 993ccd979bdSMark Fasheh osb->local_alloc_copy, 994ccd979bdSMark Fasheh NULL); 995ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 996ccd979bdSMark Fasheh 997ccd979bdSMark Fasheh osb->local_alloc_copy = NULL; 998ccd979bdSMark Fasheh osb->dirty = 0; 999ccd979bdSMark Fasheh } 1000ccd979bdSMark Fasheh } 1001ccd979bdSMark Fasheh 1002ccd979bdSMark Fasheh static int __ocfs2_recovery_thread(void *arg) 1003ccd979bdSMark Fasheh { 1004ccd979bdSMark Fasheh int status, node_num; 1005ccd979bdSMark Fasheh struct ocfs2_super *osb = arg; 1006553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 1007ccd979bdSMark Fasheh 1008ccd979bdSMark Fasheh mlog_entry_void(); 1009ccd979bdSMark Fasheh 1010ccd979bdSMark Fasheh status = ocfs2_wait_on_mount(osb); 1011ccd979bdSMark Fasheh if (status < 0) { 1012ccd979bdSMark Fasheh goto bail; 1013ccd979bdSMark Fasheh } 1014ccd979bdSMark Fasheh 1015ccd979bdSMark Fasheh restart: 1016ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 1017ccd979bdSMark Fasheh if (status < 0) { 1018ccd979bdSMark Fasheh mlog_errno(status); 1019ccd979bdSMark Fasheh goto bail; 1020ccd979bdSMark Fasheh } 1021ccd979bdSMark Fasheh 1022553abd04SJoel Becker spin_lock(&osb->osb_lock); 1023553abd04SJoel Becker while (rm->rm_used) { 1024553abd04SJoel Becker /* It's always safe to remove entry zero, as we won't 1025553abd04SJoel Becker * clear it until ocfs2_recover_node() has succeeded. */ 1026553abd04SJoel Becker node_num = rm->rm_entries[0]; 1027553abd04SJoel Becker spin_unlock(&osb->osb_lock); 1028ccd979bdSMark Fasheh 1029ccd979bdSMark Fasheh status = ocfs2_recover_node(osb, node_num); 1030553abd04SJoel Becker if (!status) { 1031553abd04SJoel Becker ocfs2_recovery_map_clear(osb, node_num); 1032553abd04SJoel Becker } else { 1033ccd979bdSMark Fasheh mlog(ML_ERROR, 1034ccd979bdSMark Fasheh "Error %d recovering node %d on device (%u,%u)!\n", 1035ccd979bdSMark Fasheh status, node_num, 1036ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1037ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume requires unmount.\n"); 1038ccd979bdSMark Fasheh } 1039ccd979bdSMark Fasheh 1040553abd04SJoel Becker spin_lock(&osb->osb_lock); 1041ccd979bdSMark Fasheh } 1042553abd04SJoel Becker spin_unlock(&osb->osb_lock); 1043553abd04SJoel Becker mlog(0, "All nodes recovered\n"); 1044553abd04SJoel Becker 1045539d8264SSunil Mushran /* Refresh all journal recovery generations from disk */ 1046539d8264SSunil Mushran status = ocfs2_check_journals_nolocks(osb); 1047539d8264SSunil Mushran status = (status == -EROFS) ? 0 : status; 1048539d8264SSunil Mushran if (status < 0) 1049539d8264SSunil Mushran mlog_errno(status); 1050539d8264SSunil Mushran 1051ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1052ccd979bdSMark Fasheh 1053ccd979bdSMark Fasheh /* We always run recovery on our own orphan dir - the dead 105434d024f8SMark Fasheh * node(s) may have disallowd a previos inode delete. Re-processing 105534d024f8SMark Fasheh * is therefore required. */ 1056ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, 1057ccd979bdSMark Fasheh NULL); 1058ccd979bdSMark Fasheh 1059ccd979bdSMark Fasheh bail: 1060c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 1061553abd04SJoel Becker if (!status && !ocfs2_recovery_completed(osb)) { 1062c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1063ccd979bdSMark Fasheh goto restart; 1064ccd979bdSMark Fasheh } 1065ccd979bdSMark Fasheh 1066ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 1067ccd979bdSMark Fasheh mb(); /* sync with ocfs2_recovery_thread_running */ 1068ccd979bdSMark Fasheh wake_up(&osb->recovery_event); 1069ccd979bdSMark Fasheh 1070c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1071ccd979bdSMark Fasheh 1072ccd979bdSMark Fasheh mlog_exit(status); 1073ccd979bdSMark Fasheh /* no one is callint kthread_stop() for us so the kthread() api 1074ccd979bdSMark Fasheh * requires that we call do_exit(). And it isn't exported, but 1075ccd979bdSMark Fasheh * complete_and_exit() seems to be a minimal wrapper around it. */ 1076ccd979bdSMark Fasheh complete_and_exit(NULL, status); 1077ccd979bdSMark Fasheh return status; 1078ccd979bdSMark Fasheh } 1079ccd979bdSMark Fasheh 1080ccd979bdSMark Fasheh void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) 1081ccd979bdSMark Fasheh { 1082ccd979bdSMark Fasheh mlog_entry("(node_num=%d, osb->node_num = %d)\n", 1083ccd979bdSMark Fasheh node_num, osb->node_num); 1084ccd979bdSMark Fasheh 1085c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 1086ccd979bdSMark Fasheh if (osb->disable_recovery) 1087ccd979bdSMark Fasheh goto out; 1088ccd979bdSMark Fasheh 1089ccd979bdSMark Fasheh /* People waiting on recovery will wait on 1090ccd979bdSMark Fasheh * the recovery map to empty. */ 1091553abd04SJoel Becker if (ocfs2_recovery_map_set(osb, node_num)) 1092553abd04SJoel Becker mlog(0, "node %d already in recovery map.\n", node_num); 1093ccd979bdSMark Fasheh 1094ccd979bdSMark Fasheh mlog(0, "starting recovery thread...\n"); 1095ccd979bdSMark Fasheh 1096ccd979bdSMark Fasheh if (osb->recovery_thread_task) 1097ccd979bdSMark Fasheh goto out; 1098ccd979bdSMark Fasheh 1099ccd979bdSMark Fasheh osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, 110078427043SMark Fasheh "ocfs2rec"); 1101ccd979bdSMark Fasheh if (IS_ERR(osb->recovery_thread_task)) { 1102ccd979bdSMark Fasheh mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); 1103ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 1104ccd979bdSMark Fasheh } 1105ccd979bdSMark Fasheh 1106ccd979bdSMark Fasheh out: 1107c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1108ccd979bdSMark Fasheh wake_up(&osb->recovery_event); 1109ccd979bdSMark Fasheh 1110ccd979bdSMark Fasheh mlog_exit_void(); 1111ccd979bdSMark Fasheh } 1112ccd979bdSMark Fasheh 1113539d8264SSunil Mushran static int ocfs2_read_journal_inode(struct ocfs2_super *osb, 1114539d8264SSunil Mushran int slot_num, 1115539d8264SSunil Mushran struct buffer_head **bh, 1116539d8264SSunil Mushran struct inode **ret_inode) 1117539d8264SSunil Mushran { 1118539d8264SSunil Mushran int status = -EACCES; 1119539d8264SSunil Mushran struct inode *inode = NULL; 1120539d8264SSunil Mushran 1121539d8264SSunil Mushran BUG_ON(slot_num >= osb->max_slots); 1122539d8264SSunil Mushran 1123539d8264SSunil Mushran inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 1124539d8264SSunil Mushran slot_num); 1125539d8264SSunil Mushran if (!inode || is_bad_inode(inode)) { 1126539d8264SSunil Mushran mlog_errno(status); 1127539d8264SSunil Mushran goto bail; 1128539d8264SSunil Mushran } 1129539d8264SSunil Mushran SET_INODE_JOURNAL(inode); 1130539d8264SSunil Mushran 1131b657c95cSJoel Becker status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); 1132539d8264SSunil Mushran if (status < 0) { 1133539d8264SSunil Mushran mlog_errno(status); 1134539d8264SSunil Mushran goto bail; 1135539d8264SSunil Mushran } 1136539d8264SSunil Mushran 1137539d8264SSunil Mushran status = 0; 1138539d8264SSunil Mushran 1139539d8264SSunil Mushran bail: 1140539d8264SSunil Mushran if (inode) { 1141539d8264SSunil Mushran if (status || !ret_inode) 1142539d8264SSunil Mushran iput(inode); 1143539d8264SSunil Mushran else 1144539d8264SSunil Mushran *ret_inode = inode; 1145539d8264SSunil Mushran } 1146539d8264SSunil Mushran return status; 1147539d8264SSunil Mushran } 1148539d8264SSunil Mushran 1149ccd979bdSMark Fasheh /* Does the actual journal replay and marks the journal inode as 1150ccd979bdSMark Fasheh * clean. Will only replay if the journal inode is marked dirty. */ 1151ccd979bdSMark Fasheh static int ocfs2_replay_journal(struct ocfs2_super *osb, 1152ccd979bdSMark Fasheh int node_num, 1153ccd979bdSMark Fasheh int slot_num) 1154ccd979bdSMark Fasheh { 1155ccd979bdSMark Fasheh int status; 1156ccd979bdSMark Fasheh int got_lock = 0; 1157ccd979bdSMark Fasheh unsigned int flags; 1158ccd979bdSMark Fasheh struct inode *inode = NULL; 1159ccd979bdSMark Fasheh struct ocfs2_dinode *fe; 1160ccd979bdSMark Fasheh journal_t *journal = NULL; 1161ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 1162539d8264SSunil Mushran u32 slot_reco_gen; 1163ccd979bdSMark Fasheh 1164539d8264SSunil Mushran status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); 1165539d8264SSunil Mushran if (status) { 1166ccd979bdSMark Fasheh mlog_errno(status); 1167ccd979bdSMark Fasheh goto done; 1168ccd979bdSMark Fasheh } 1169539d8264SSunil Mushran 1170539d8264SSunil Mushran fe = (struct ocfs2_dinode *)bh->b_data; 1171539d8264SSunil Mushran slot_reco_gen = ocfs2_get_recovery_generation(fe); 1172539d8264SSunil Mushran brelse(bh); 1173539d8264SSunil Mushran bh = NULL; 1174539d8264SSunil Mushran 1175539d8264SSunil Mushran /* 1176539d8264SSunil Mushran * As the fs recovery is asynchronous, there is a small chance that 1177539d8264SSunil Mushran * another node mounted (and recovered) the slot before the recovery 1178539d8264SSunil Mushran * thread could get the lock. To handle that, we dirty read the journal 1179539d8264SSunil Mushran * inode for that slot to get the recovery generation. If it is 1180539d8264SSunil Mushran * different than what we expected, the slot has been recovered. 1181539d8264SSunil Mushran * If not, it needs recovery. 1182539d8264SSunil Mushran */ 1183539d8264SSunil Mushran if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { 1184539d8264SSunil Mushran mlog(0, "Slot %u already recovered (old/new=%u/%u)\n", slot_num, 1185539d8264SSunil Mushran osb->slot_recovery_generations[slot_num], slot_reco_gen); 1186539d8264SSunil Mushran osb->slot_recovery_generations[slot_num] = slot_reco_gen; 1187539d8264SSunil Mushran status = -EBUSY; 1188ccd979bdSMark Fasheh goto done; 1189ccd979bdSMark Fasheh } 1190539d8264SSunil Mushran 1191539d8264SSunil Mushran /* Continue with recovery as the journal has not yet been recovered */ 1192ccd979bdSMark Fasheh 1193e63aecb6SMark Fasheh status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); 1194ccd979bdSMark Fasheh if (status < 0) { 1195e63aecb6SMark Fasheh mlog(0, "status returned from ocfs2_inode_lock=%d\n", status); 1196ccd979bdSMark Fasheh if (status != -ERESTARTSYS) 1197ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not lock journal!\n"); 1198ccd979bdSMark Fasheh goto done; 1199ccd979bdSMark Fasheh } 1200ccd979bdSMark Fasheh got_lock = 1; 1201ccd979bdSMark Fasheh 1202ccd979bdSMark Fasheh fe = (struct ocfs2_dinode *) bh->b_data; 1203ccd979bdSMark Fasheh 1204ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 1205539d8264SSunil Mushran slot_reco_gen = ocfs2_get_recovery_generation(fe); 1206ccd979bdSMark Fasheh 1207ccd979bdSMark Fasheh if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { 1208ccd979bdSMark Fasheh mlog(0, "No recovery required for node %d\n", node_num); 1209539d8264SSunil Mushran /* Refresh recovery generation for the slot */ 1210539d8264SSunil Mushran osb->slot_recovery_generations[slot_num] = slot_reco_gen; 1211ccd979bdSMark Fasheh goto done; 1212ccd979bdSMark Fasheh } 1213ccd979bdSMark Fasheh 1214ccd979bdSMark Fasheh mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n", 1215ccd979bdSMark Fasheh node_num, slot_num, 1216ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1217ccd979bdSMark Fasheh 1218ccd979bdSMark Fasheh OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); 1219ccd979bdSMark Fasheh 1220ccd979bdSMark Fasheh status = ocfs2_force_read_journal(inode); 1221ccd979bdSMark Fasheh if (status < 0) { 1222ccd979bdSMark Fasheh mlog_errno(status); 1223ccd979bdSMark Fasheh goto done; 1224ccd979bdSMark Fasheh } 1225ccd979bdSMark Fasheh 1226ccd979bdSMark Fasheh mlog(0, "calling journal_init_inode\n"); 12272b4e30fbSJoel Becker journal = jbd2_journal_init_inode(inode); 1228ccd979bdSMark Fasheh if (journal == NULL) { 1229ccd979bdSMark Fasheh mlog(ML_ERROR, "Linux journal layer error\n"); 1230ccd979bdSMark Fasheh status = -EIO; 1231ccd979bdSMark Fasheh goto done; 1232ccd979bdSMark Fasheh } 1233ccd979bdSMark Fasheh 12342b4e30fbSJoel Becker status = jbd2_journal_load(journal); 1235ccd979bdSMark Fasheh if (status < 0) { 1236ccd979bdSMark Fasheh mlog_errno(status); 1237ccd979bdSMark Fasheh if (!igrab(inode)) 1238ccd979bdSMark Fasheh BUG(); 12392b4e30fbSJoel Becker jbd2_journal_destroy(journal); 1240ccd979bdSMark Fasheh goto done; 1241ccd979bdSMark Fasheh } 1242ccd979bdSMark Fasheh 1243ccd979bdSMark Fasheh ocfs2_clear_journal_error(osb->sb, journal, slot_num); 1244ccd979bdSMark Fasheh 1245ccd979bdSMark Fasheh /* wipe the journal */ 1246ccd979bdSMark Fasheh mlog(0, "flushing the journal.\n"); 12472b4e30fbSJoel Becker jbd2_journal_lock_updates(journal); 12482b4e30fbSJoel Becker status = jbd2_journal_flush(journal); 12492b4e30fbSJoel Becker jbd2_journal_unlock_updates(journal); 1250ccd979bdSMark Fasheh if (status < 0) 1251ccd979bdSMark Fasheh mlog_errno(status); 1252ccd979bdSMark Fasheh 1253ccd979bdSMark Fasheh /* This will mark the node clean */ 1254ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 1255ccd979bdSMark Fasheh flags &= ~OCFS2_JOURNAL_DIRTY_FL; 1256ccd979bdSMark Fasheh fe->id1.journal1.ij_flags = cpu_to_le32(flags); 1257ccd979bdSMark Fasheh 1258539d8264SSunil Mushran /* Increment recovery generation to indicate successful recovery */ 1259539d8264SSunil Mushran ocfs2_bump_recovery_generation(fe); 1260539d8264SSunil Mushran osb->slot_recovery_generations[slot_num] = 1261539d8264SSunil Mushran ocfs2_get_recovery_generation(fe); 1262539d8264SSunil Mushran 1263ccd979bdSMark Fasheh status = ocfs2_write_block(osb, bh, inode); 1264ccd979bdSMark Fasheh if (status < 0) 1265ccd979bdSMark Fasheh mlog_errno(status); 1266ccd979bdSMark Fasheh 1267ccd979bdSMark Fasheh if (!igrab(inode)) 1268ccd979bdSMark Fasheh BUG(); 1269ccd979bdSMark Fasheh 12702b4e30fbSJoel Becker jbd2_journal_destroy(journal); 1271ccd979bdSMark Fasheh 1272ccd979bdSMark Fasheh done: 1273ccd979bdSMark Fasheh /* drop the lock on this nodes journal */ 1274ccd979bdSMark Fasheh if (got_lock) 1275e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 1276ccd979bdSMark Fasheh 1277ccd979bdSMark Fasheh if (inode) 1278ccd979bdSMark Fasheh iput(inode); 1279ccd979bdSMark Fasheh 1280ccd979bdSMark Fasheh brelse(bh); 1281ccd979bdSMark Fasheh 1282ccd979bdSMark Fasheh mlog_exit(status); 1283ccd979bdSMark Fasheh return status; 1284ccd979bdSMark Fasheh } 1285ccd979bdSMark Fasheh 1286ccd979bdSMark Fasheh /* 1287ccd979bdSMark Fasheh * Do the most important parts of node recovery: 1288ccd979bdSMark Fasheh * - Replay it's journal 1289ccd979bdSMark Fasheh * - Stamp a clean local allocator file 1290ccd979bdSMark Fasheh * - Stamp a clean truncate log 1291ccd979bdSMark Fasheh * - Mark the node clean 1292ccd979bdSMark Fasheh * 1293ccd979bdSMark Fasheh * If this function completes without error, a node in OCFS2 can be 1294ccd979bdSMark Fasheh * said to have been safely recovered. As a result, failure during the 1295ccd979bdSMark Fasheh * second part of a nodes recovery process (local alloc recovery) is 1296ccd979bdSMark Fasheh * far less concerning. 1297ccd979bdSMark Fasheh */ 1298ccd979bdSMark Fasheh static int ocfs2_recover_node(struct ocfs2_super *osb, 1299ccd979bdSMark Fasheh int node_num) 1300ccd979bdSMark Fasheh { 1301ccd979bdSMark Fasheh int status = 0; 1302ccd979bdSMark Fasheh int slot_num; 1303ccd979bdSMark Fasheh struct ocfs2_dinode *la_copy = NULL; 1304ccd979bdSMark Fasheh struct ocfs2_dinode *tl_copy = NULL; 1305ccd979bdSMark Fasheh 1306ccd979bdSMark Fasheh mlog_entry("(node_num=%d, osb->node_num = %d)\n", 1307ccd979bdSMark Fasheh node_num, osb->node_num); 1308ccd979bdSMark Fasheh 1309ccd979bdSMark Fasheh mlog(0, "checking node %d\n", node_num); 1310ccd979bdSMark Fasheh 1311ccd979bdSMark Fasheh /* Should not ever be called to recover ourselves -- in that 1312ccd979bdSMark Fasheh * case we should've called ocfs2_journal_load instead. */ 1313ebdec83bSEric Sesterhenn / snakebyte BUG_ON(osb->node_num == node_num); 1314ccd979bdSMark Fasheh 1315d85b20e4SJoel Becker slot_num = ocfs2_node_num_to_slot(osb, node_num); 1316d85b20e4SJoel Becker if (slot_num == -ENOENT) { 1317ccd979bdSMark Fasheh status = 0; 1318ccd979bdSMark Fasheh mlog(0, "no slot for this node, so no recovery required.\n"); 1319ccd979bdSMark Fasheh goto done; 1320ccd979bdSMark Fasheh } 1321ccd979bdSMark Fasheh 1322ccd979bdSMark Fasheh mlog(0, "node %d was using slot %d\n", node_num, slot_num); 1323ccd979bdSMark Fasheh 1324ccd979bdSMark Fasheh status = ocfs2_replay_journal(osb, node_num, slot_num); 1325ccd979bdSMark Fasheh if (status < 0) { 1326539d8264SSunil Mushran if (status == -EBUSY) { 1327539d8264SSunil Mushran mlog(0, "Skipping recovery for slot %u (node %u) " 1328539d8264SSunil Mushran "as another node has recovered it\n", slot_num, 1329539d8264SSunil Mushran node_num); 1330539d8264SSunil Mushran status = 0; 1331539d8264SSunil Mushran goto done; 1332539d8264SSunil Mushran } 1333ccd979bdSMark Fasheh mlog_errno(status); 1334ccd979bdSMark Fasheh goto done; 1335ccd979bdSMark Fasheh } 1336ccd979bdSMark Fasheh 1337ccd979bdSMark Fasheh /* Stamp a clean local alloc file AFTER recovering the journal... */ 1338ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); 1339ccd979bdSMark Fasheh if (status < 0) { 1340ccd979bdSMark Fasheh mlog_errno(status); 1341ccd979bdSMark Fasheh goto done; 1342ccd979bdSMark Fasheh } 1343ccd979bdSMark Fasheh 1344ccd979bdSMark Fasheh /* An error from begin_truncate_log_recovery is not 1345ccd979bdSMark Fasheh * serious enough to warrant halting the rest of 1346ccd979bdSMark Fasheh * recovery. */ 1347ccd979bdSMark Fasheh status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); 1348ccd979bdSMark Fasheh if (status < 0) 1349ccd979bdSMark Fasheh mlog_errno(status); 1350ccd979bdSMark Fasheh 1351ccd979bdSMark Fasheh /* Likewise, this would be a strange but ultimately not so 1352ccd979bdSMark Fasheh * harmful place to get an error... */ 13538e8a4603SMark Fasheh status = ocfs2_clear_slot(osb, slot_num); 1354ccd979bdSMark Fasheh if (status < 0) 1355ccd979bdSMark Fasheh mlog_errno(status); 1356ccd979bdSMark Fasheh 1357ccd979bdSMark Fasheh /* This will kfree the memory pointed to by la_copy and tl_copy */ 1358ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, 1359ccd979bdSMark Fasheh tl_copy); 1360ccd979bdSMark Fasheh 1361ccd979bdSMark Fasheh status = 0; 1362ccd979bdSMark Fasheh done: 1363ccd979bdSMark Fasheh 1364ccd979bdSMark Fasheh mlog_exit(status); 1365ccd979bdSMark Fasheh return status; 1366ccd979bdSMark Fasheh } 1367ccd979bdSMark Fasheh 1368ccd979bdSMark Fasheh /* Test node liveness by trylocking his journal. If we get the lock, 1369ccd979bdSMark Fasheh * we drop it here. Return 0 if we got the lock, -EAGAIN if node is 1370ccd979bdSMark Fasheh * still alive (we couldn't get the lock) and < 0 on error. */ 1371ccd979bdSMark Fasheh static int ocfs2_trylock_journal(struct ocfs2_super *osb, 1372ccd979bdSMark Fasheh int slot_num) 1373ccd979bdSMark Fasheh { 1374ccd979bdSMark Fasheh int status, flags; 1375ccd979bdSMark Fasheh struct inode *inode = NULL; 1376ccd979bdSMark Fasheh 1377ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 1378ccd979bdSMark Fasheh slot_num); 1379ccd979bdSMark Fasheh if (inode == NULL) { 1380ccd979bdSMark Fasheh mlog(ML_ERROR, "access error\n"); 1381ccd979bdSMark Fasheh status = -EACCES; 1382ccd979bdSMark Fasheh goto bail; 1383ccd979bdSMark Fasheh } 1384ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 1385ccd979bdSMark Fasheh mlog(ML_ERROR, "access error (bad inode)\n"); 1386ccd979bdSMark Fasheh iput(inode); 1387ccd979bdSMark Fasheh inode = NULL; 1388ccd979bdSMark Fasheh status = -EACCES; 1389ccd979bdSMark Fasheh goto bail; 1390ccd979bdSMark Fasheh } 1391ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 1392ccd979bdSMark Fasheh 1393ccd979bdSMark Fasheh flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; 1394e63aecb6SMark Fasheh status = ocfs2_inode_lock_full(inode, NULL, 1, flags); 1395ccd979bdSMark Fasheh if (status < 0) { 1396ccd979bdSMark Fasheh if (status != -EAGAIN) 1397ccd979bdSMark Fasheh mlog_errno(status); 1398ccd979bdSMark Fasheh goto bail; 1399ccd979bdSMark Fasheh } 1400ccd979bdSMark Fasheh 1401e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 1402ccd979bdSMark Fasheh bail: 1403ccd979bdSMark Fasheh if (inode) 1404ccd979bdSMark Fasheh iput(inode); 1405ccd979bdSMark Fasheh 1406ccd979bdSMark Fasheh return status; 1407ccd979bdSMark Fasheh } 1408ccd979bdSMark Fasheh 1409ccd979bdSMark Fasheh /* Call this underneath ocfs2_super_lock. It also assumes that the 1410ccd979bdSMark Fasheh * slot info struct has been updated from disk. */ 1411ccd979bdSMark Fasheh int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) 1412ccd979bdSMark Fasheh { 1413d85b20e4SJoel Becker unsigned int node_num; 1414d85b20e4SJoel Becker int status, i; 1415a1af7d15SMark Fasheh u32 gen; 1416539d8264SSunil Mushran struct buffer_head *bh = NULL; 1417539d8264SSunil Mushran struct ocfs2_dinode *di; 1418ccd979bdSMark Fasheh 1419ccd979bdSMark Fasheh /* This is called with the super block cluster lock, so we 1420ccd979bdSMark Fasheh * know that the slot map can't change underneath us. */ 1421ccd979bdSMark Fasheh 1422d85b20e4SJoel Becker for (i = 0; i < osb->max_slots; i++) { 1423539d8264SSunil Mushran /* Read journal inode to get the recovery generation */ 1424539d8264SSunil Mushran status = ocfs2_read_journal_inode(osb, i, &bh, NULL); 1425539d8264SSunil Mushran if (status) { 1426539d8264SSunil Mushran mlog_errno(status); 1427539d8264SSunil Mushran goto bail; 1428539d8264SSunil Mushran } 1429539d8264SSunil Mushran di = (struct ocfs2_dinode *)bh->b_data; 1430a1af7d15SMark Fasheh gen = ocfs2_get_recovery_generation(di); 1431539d8264SSunil Mushran brelse(bh); 1432539d8264SSunil Mushran bh = NULL; 1433539d8264SSunil Mushran 1434a1af7d15SMark Fasheh spin_lock(&osb->osb_lock); 1435a1af7d15SMark Fasheh osb->slot_recovery_generations[i] = gen; 1436a1af7d15SMark Fasheh 1437539d8264SSunil Mushran mlog(0, "Slot %u recovery generation is %u\n", i, 1438539d8264SSunil Mushran osb->slot_recovery_generations[i]); 1439539d8264SSunil Mushran 1440a1af7d15SMark Fasheh if (i == osb->slot_num) { 1441a1af7d15SMark Fasheh spin_unlock(&osb->osb_lock); 1442ccd979bdSMark Fasheh continue; 1443a1af7d15SMark Fasheh } 1444d85b20e4SJoel Becker 1445d85b20e4SJoel Becker status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); 1446a1af7d15SMark Fasheh if (status == -ENOENT) { 1447a1af7d15SMark Fasheh spin_unlock(&osb->osb_lock); 1448ccd979bdSMark Fasheh continue; 1449a1af7d15SMark Fasheh } 1450ccd979bdSMark Fasheh 1451a1af7d15SMark Fasheh if (__ocfs2_recovery_map_test(osb, node_num)) { 1452a1af7d15SMark Fasheh spin_unlock(&osb->osb_lock); 1453ccd979bdSMark Fasheh continue; 1454a1af7d15SMark Fasheh } 1455d85b20e4SJoel Becker spin_unlock(&osb->osb_lock); 1456ccd979bdSMark Fasheh 1457ccd979bdSMark Fasheh /* Ok, we have a slot occupied by another node which 1458ccd979bdSMark Fasheh * is not in the recovery map. We trylock his journal 1459ccd979bdSMark Fasheh * file here to test if he's alive. */ 1460ccd979bdSMark Fasheh status = ocfs2_trylock_journal(osb, i); 1461ccd979bdSMark Fasheh if (!status) { 1462ccd979bdSMark Fasheh /* Since we're called from mount, we know that 1463ccd979bdSMark Fasheh * the recovery thread can't race us on 1464ccd979bdSMark Fasheh * setting / checking the recovery bits. */ 1465ccd979bdSMark Fasheh ocfs2_recovery_thread(osb, node_num); 1466ccd979bdSMark Fasheh } else if ((status < 0) && (status != -EAGAIN)) { 1467ccd979bdSMark Fasheh mlog_errno(status); 1468ccd979bdSMark Fasheh goto bail; 1469ccd979bdSMark Fasheh } 1470ccd979bdSMark Fasheh } 1471ccd979bdSMark Fasheh 1472ccd979bdSMark Fasheh status = 0; 1473ccd979bdSMark Fasheh bail: 1474ccd979bdSMark Fasheh mlog_exit(status); 1475ccd979bdSMark Fasheh return status; 1476ccd979bdSMark Fasheh } 1477ccd979bdSMark Fasheh 14785eae5b96SMark Fasheh struct ocfs2_orphan_filldir_priv { 14795eae5b96SMark Fasheh struct inode *head; 14805eae5b96SMark Fasheh struct ocfs2_super *osb; 14815eae5b96SMark Fasheh }; 14825eae5b96SMark Fasheh 14835eae5b96SMark Fasheh static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len, 14845eae5b96SMark Fasheh loff_t pos, u64 ino, unsigned type) 14855eae5b96SMark Fasheh { 14865eae5b96SMark Fasheh struct ocfs2_orphan_filldir_priv *p = priv; 14875eae5b96SMark Fasheh struct inode *iter; 14885eae5b96SMark Fasheh 14895eae5b96SMark Fasheh if (name_len == 1 && !strncmp(".", name, 1)) 14905eae5b96SMark Fasheh return 0; 14915eae5b96SMark Fasheh if (name_len == 2 && !strncmp("..", name, 2)) 14925eae5b96SMark Fasheh return 0; 14935eae5b96SMark Fasheh 14945eae5b96SMark Fasheh /* Skip bad inodes so that recovery can continue */ 14955eae5b96SMark Fasheh iter = ocfs2_iget(p->osb, ino, 14965fa0613eSJan Kara OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); 14975eae5b96SMark Fasheh if (IS_ERR(iter)) 14985eae5b96SMark Fasheh return 0; 14995eae5b96SMark Fasheh 15005eae5b96SMark Fasheh mlog(0, "queue orphan %llu\n", 15015eae5b96SMark Fasheh (unsigned long long)OCFS2_I(iter)->ip_blkno); 15025eae5b96SMark Fasheh /* No locking is required for the next_orphan queue as there 15035eae5b96SMark Fasheh * is only ever a single process doing orphan recovery. */ 15045eae5b96SMark Fasheh OCFS2_I(iter)->ip_next_orphan = p->head; 15055eae5b96SMark Fasheh p->head = iter; 15065eae5b96SMark Fasheh 15075eae5b96SMark Fasheh return 0; 15085eae5b96SMark Fasheh } 15095eae5b96SMark Fasheh 1510b4df6ed8SMark Fasheh static int ocfs2_queue_orphans(struct ocfs2_super *osb, 1511b4df6ed8SMark Fasheh int slot, 1512b4df6ed8SMark Fasheh struct inode **head) 1513ccd979bdSMark Fasheh { 1514b4df6ed8SMark Fasheh int status; 1515ccd979bdSMark Fasheh struct inode *orphan_dir_inode = NULL; 15165eae5b96SMark Fasheh struct ocfs2_orphan_filldir_priv priv; 15175eae5b96SMark Fasheh loff_t pos = 0; 15185eae5b96SMark Fasheh 15195eae5b96SMark Fasheh priv.osb = osb; 15205eae5b96SMark Fasheh priv.head = *head; 1521ccd979bdSMark Fasheh 1522ccd979bdSMark Fasheh orphan_dir_inode = ocfs2_get_system_file_inode(osb, 1523ccd979bdSMark Fasheh ORPHAN_DIR_SYSTEM_INODE, 1524ccd979bdSMark Fasheh slot); 1525ccd979bdSMark Fasheh if (!orphan_dir_inode) { 1526ccd979bdSMark Fasheh status = -ENOENT; 1527ccd979bdSMark Fasheh mlog_errno(status); 1528b4df6ed8SMark Fasheh return status; 1529ccd979bdSMark Fasheh } 1530ccd979bdSMark Fasheh 15311b1dcc1bSJes Sorensen mutex_lock(&orphan_dir_inode->i_mutex); 1532e63aecb6SMark Fasheh status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); 1533ccd979bdSMark Fasheh if (status < 0) { 1534ccd979bdSMark Fasheh mlog_errno(status); 1535ccd979bdSMark Fasheh goto out; 1536ccd979bdSMark Fasheh } 1537ccd979bdSMark Fasheh 15385eae5b96SMark Fasheh status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv, 15395eae5b96SMark Fasheh ocfs2_orphan_filldir); 15405eae5b96SMark Fasheh if (status) { 1541ccd979bdSMark Fasheh mlog_errno(status); 1542a86370fbSMark Fasheh goto out_cluster; 1543ccd979bdSMark Fasheh } 1544ccd979bdSMark Fasheh 15455eae5b96SMark Fasheh *head = priv.head; 1546ccd979bdSMark Fasheh 1547a86370fbSMark Fasheh out_cluster: 1548e63aecb6SMark Fasheh ocfs2_inode_unlock(orphan_dir_inode, 0); 1549b4df6ed8SMark Fasheh out: 1550b4df6ed8SMark Fasheh mutex_unlock(&orphan_dir_inode->i_mutex); 1551ccd979bdSMark Fasheh iput(orphan_dir_inode); 1552b4df6ed8SMark Fasheh return status; 1553b4df6ed8SMark Fasheh } 1554b4df6ed8SMark Fasheh 1555b4df6ed8SMark Fasheh static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, 1556b4df6ed8SMark Fasheh int slot) 1557b4df6ed8SMark Fasheh { 1558b4df6ed8SMark Fasheh int ret; 1559b4df6ed8SMark Fasheh 1560b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 1561b4df6ed8SMark Fasheh ret = !osb->osb_orphan_wipes[slot]; 1562b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 1563b4df6ed8SMark Fasheh return ret; 1564b4df6ed8SMark Fasheh } 1565b4df6ed8SMark Fasheh 1566b4df6ed8SMark Fasheh static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, 1567b4df6ed8SMark Fasheh int slot) 1568b4df6ed8SMark Fasheh { 1569b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 1570b4df6ed8SMark Fasheh /* Mark ourselves such that new processes in delete_inode() 1571b4df6ed8SMark Fasheh * know to quit early. */ 1572b4df6ed8SMark Fasheh ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); 1573b4df6ed8SMark Fasheh while (osb->osb_orphan_wipes[slot]) { 1574b4df6ed8SMark Fasheh /* If any processes are already in the middle of an 1575b4df6ed8SMark Fasheh * orphan wipe on this dir, then we need to wait for 1576b4df6ed8SMark Fasheh * them. */ 1577b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 1578b4df6ed8SMark Fasheh wait_event_interruptible(osb->osb_wipe_event, 1579b4df6ed8SMark Fasheh ocfs2_orphan_recovery_can_continue(osb, slot)); 1580b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 1581b4df6ed8SMark Fasheh } 1582b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 1583b4df6ed8SMark Fasheh } 1584b4df6ed8SMark Fasheh 1585b4df6ed8SMark Fasheh static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, 1586b4df6ed8SMark Fasheh int slot) 1587b4df6ed8SMark Fasheh { 1588b4df6ed8SMark Fasheh ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); 1589b4df6ed8SMark Fasheh } 1590b4df6ed8SMark Fasheh 1591b4df6ed8SMark Fasheh /* 1592b4df6ed8SMark Fasheh * Orphan recovery. Each mounted node has it's own orphan dir which we 1593b4df6ed8SMark Fasheh * must run during recovery. Our strategy here is to build a list of 1594b4df6ed8SMark Fasheh * the inodes in the orphan dir and iget/iput them. The VFS does 1595b4df6ed8SMark Fasheh * (most) of the rest of the work. 1596b4df6ed8SMark Fasheh * 1597b4df6ed8SMark Fasheh * Orphan recovery can happen at any time, not just mount so we have a 1598b4df6ed8SMark Fasheh * couple of extra considerations. 1599b4df6ed8SMark Fasheh * 1600b4df6ed8SMark Fasheh * - We grab as many inodes as we can under the orphan dir lock - 1601b4df6ed8SMark Fasheh * doing iget() outside the orphan dir risks getting a reference on 1602b4df6ed8SMark Fasheh * an invalid inode. 1603b4df6ed8SMark Fasheh * - We must be sure not to deadlock with other processes on the 1604b4df6ed8SMark Fasheh * system wanting to run delete_inode(). This can happen when they go 1605b4df6ed8SMark Fasheh * to lock the orphan dir and the orphan recovery process attempts to 1606b4df6ed8SMark Fasheh * iget() inside the orphan dir lock. This can be avoided by 1607b4df6ed8SMark Fasheh * advertising our state to ocfs2_delete_inode(). 1608b4df6ed8SMark Fasheh */ 1609b4df6ed8SMark Fasheh static int ocfs2_recover_orphans(struct ocfs2_super *osb, 1610b4df6ed8SMark Fasheh int slot) 1611b4df6ed8SMark Fasheh { 1612b4df6ed8SMark Fasheh int ret = 0; 1613b4df6ed8SMark Fasheh struct inode *inode = NULL; 1614b4df6ed8SMark Fasheh struct inode *iter; 1615b4df6ed8SMark Fasheh struct ocfs2_inode_info *oi; 1616b4df6ed8SMark Fasheh 1617b4df6ed8SMark Fasheh mlog(0, "Recover inodes from orphan dir in slot %d\n", slot); 1618b4df6ed8SMark Fasheh 1619b4df6ed8SMark Fasheh ocfs2_mark_recovering_orphan_dir(osb, slot); 1620b4df6ed8SMark Fasheh ret = ocfs2_queue_orphans(osb, slot, &inode); 1621b4df6ed8SMark Fasheh ocfs2_clear_recovering_orphan_dir(osb, slot); 1622b4df6ed8SMark Fasheh 1623b4df6ed8SMark Fasheh /* Error here should be noted, but we want to continue with as 1624b4df6ed8SMark Fasheh * many queued inodes as we've got. */ 1625b4df6ed8SMark Fasheh if (ret) 1626b4df6ed8SMark Fasheh mlog_errno(ret); 1627ccd979bdSMark Fasheh 1628ccd979bdSMark Fasheh while (inode) { 1629ccd979bdSMark Fasheh oi = OCFS2_I(inode); 1630b0697053SMark Fasheh mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno); 1631ccd979bdSMark Fasheh 1632ccd979bdSMark Fasheh iter = oi->ip_next_orphan; 1633ccd979bdSMark Fasheh 1634ccd979bdSMark Fasheh spin_lock(&oi->ip_lock); 163534d024f8SMark Fasheh /* The remote delete code may have set these on the 163634d024f8SMark Fasheh * assumption that the other node would wipe them 163734d024f8SMark Fasheh * successfully. If they are still in the node's 163834d024f8SMark Fasheh * orphan dir, we need to reset that state. */ 1639ccd979bdSMark Fasheh oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); 1640ccd979bdSMark Fasheh 1641ccd979bdSMark Fasheh /* Set the proper information to get us going into 1642ccd979bdSMark Fasheh * ocfs2_delete_inode. */ 1643ccd979bdSMark Fasheh oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; 1644ccd979bdSMark Fasheh spin_unlock(&oi->ip_lock); 1645ccd979bdSMark Fasheh 1646ccd979bdSMark Fasheh iput(inode); 1647ccd979bdSMark Fasheh 1648ccd979bdSMark Fasheh inode = iter; 1649ccd979bdSMark Fasheh } 1650ccd979bdSMark Fasheh 1651b4df6ed8SMark Fasheh return ret; 1652ccd979bdSMark Fasheh } 1653ccd979bdSMark Fasheh 1654ccd979bdSMark Fasheh static int ocfs2_wait_on_mount(struct ocfs2_super *osb) 1655ccd979bdSMark Fasheh { 1656ccd979bdSMark Fasheh /* This check is good because ocfs2 will wait on our recovery 1657ccd979bdSMark Fasheh * thread before changing it to something other than MOUNTED 1658ccd979bdSMark Fasheh * or DISABLED. */ 1659ccd979bdSMark Fasheh wait_event(osb->osb_mount_event, 1660ccd979bdSMark Fasheh atomic_read(&osb->vol_state) == VOLUME_MOUNTED || 1661ccd979bdSMark Fasheh atomic_read(&osb->vol_state) == VOLUME_DISABLED); 1662ccd979bdSMark Fasheh 1663ccd979bdSMark Fasheh /* If there's an error on mount, then we may never get to the 1664ccd979bdSMark Fasheh * MOUNTED flag, but this is set right before 1665ccd979bdSMark Fasheh * dismount_volume() so we can trust it. */ 1666ccd979bdSMark Fasheh if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { 1667ccd979bdSMark Fasheh mlog(0, "mount error, exiting!\n"); 1668ccd979bdSMark Fasheh return -EBUSY; 1669ccd979bdSMark Fasheh } 1670ccd979bdSMark Fasheh 1671ccd979bdSMark Fasheh return 0; 1672ccd979bdSMark Fasheh } 1673ccd979bdSMark Fasheh 1674ccd979bdSMark Fasheh static int ocfs2_commit_thread(void *arg) 1675ccd979bdSMark Fasheh { 1676ccd979bdSMark Fasheh int status; 1677ccd979bdSMark Fasheh struct ocfs2_super *osb = arg; 1678ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 1679ccd979bdSMark Fasheh 1680ccd979bdSMark Fasheh /* we can trust j_num_trans here because _should_stop() is only set in 1681ccd979bdSMark Fasheh * shutdown and nobody other than ourselves should be able to start 1682ccd979bdSMark Fasheh * transactions. committing on shutdown might take a few iterations 1683ccd979bdSMark Fasheh * as final transactions put deleted inodes on the list */ 1684ccd979bdSMark Fasheh while (!(kthread_should_stop() && 1685ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans) == 0)) { 1686ccd979bdSMark Fasheh 1687745ae8baSMark Fasheh wait_event_interruptible(osb->checkpoint_event, 1688ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans) 1689745ae8baSMark Fasheh || kthread_should_stop()); 1690ccd979bdSMark Fasheh 1691ccd979bdSMark Fasheh status = ocfs2_commit_cache(osb); 1692ccd979bdSMark Fasheh if (status < 0) 1693ccd979bdSMark Fasheh mlog_errno(status); 1694ccd979bdSMark Fasheh 1695ccd979bdSMark Fasheh if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ 1696ccd979bdSMark Fasheh mlog(ML_KTHREAD, 1697ccd979bdSMark Fasheh "commit_thread: %u transactions pending on " 1698ccd979bdSMark Fasheh "shutdown\n", 1699ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans)); 1700ccd979bdSMark Fasheh } 1701ccd979bdSMark Fasheh } 1702ccd979bdSMark Fasheh 1703ccd979bdSMark Fasheh return 0; 1704ccd979bdSMark Fasheh } 1705ccd979bdSMark Fasheh 1706539d8264SSunil Mushran /* Reads all the journal inodes without taking any cluster locks. Used 1707539d8264SSunil Mushran * for hard readonly access to determine whether any journal requires 1708539d8264SSunil Mushran * recovery. Also used to refresh the recovery generation numbers after 1709539d8264SSunil Mushran * a journal has been recovered by another node. 1710539d8264SSunil Mushran */ 1711ccd979bdSMark Fasheh int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) 1712ccd979bdSMark Fasheh { 1713ccd979bdSMark Fasheh int ret = 0; 1714ccd979bdSMark Fasheh unsigned int slot; 1715539d8264SSunil Mushran struct buffer_head *di_bh = NULL; 1716ccd979bdSMark Fasheh struct ocfs2_dinode *di; 1717539d8264SSunil Mushran int journal_dirty = 0; 1718ccd979bdSMark Fasheh 1719ccd979bdSMark Fasheh for(slot = 0; slot < osb->max_slots; slot++) { 1720539d8264SSunil Mushran ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); 1721539d8264SSunil Mushran if (ret) { 1722ccd979bdSMark Fasheh mlog_errno(ret); 1723ccd979bdSMark Fasheh goto out; 1724ccd979bdSMark Fasheh } 1725ccd979bdSMark Fasheh 1726ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) di_bh->b_data; 1727ccd979bdSMark Fasheh 1728539d8264SSunil Mushran osb->slot_recovery_generations[slot] = 1729539d8264SSunil Mushran ocfs2_get_recovery_generation(di); 1730539d8264SSunil Mushran 1731ccd979bdSMark Fasheh if (le32_to_cpu(di->id1.journal1.ij_flags) & 1732ccd979bdSMark Fasheh OCFS2_JOURNAL_DIRTY_FL) 1733539d8264SSunil Mushran journal_dirty = 1; 1734ccd979bdSMark Fasheh 1735ccd979bdSMark Fasheh brelse(di_bh); 1736539d8264SSunil Mushran di_bh = NULL; 1737ccd979bdSMark Fasheh } 1738ccd979bdSMark Fasheh 1739ccd979bdSMark Fasheh out: 1740539d8264SSunil Mushran if (journal_dirty) 1741539d8264SSunil Mushran ret = -EROFS; 1742ccd979bdSMark Fasheh return ret; 1743ccd979bdSMark Fasheh } 1744