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" 38ccd979bdSMark Fasheh #include "dlmglue.h" 39ccd979bdSMark Fasheh #include "extent_map.h" 40ccd979bdSMark Fasheh #include "heartbeat.h" 41ccd979bdSMark Fasheh #include "inode.h" 42ccd979bdSMark Fasheh #include "journal.h" 43ccd979bdSMark Fasheh #include "localalloc.h" 44ccd979bdSMark Fasheh #include "namei.h" 45ccd979bdSMark Fasheh #include "slot_map.h" 46ccd979bdSMark Fasheh #include "super.h" 47ccd979bdSMark Fasheh #include "vote.h" 48ccd979bdSMark Fasheh #include "sysfile.h" 49ccd979bdSMark Fasheh 50ccd979bdSMark Fasheh #include "buffer_head_io.h" 51ccd979bdSMark Fasheh 5234af946aSIngo Molnar DEFINE_SPINLOCK(trans_inc_lock); 53ccd979bdSMark Fasheh 54ccd979bdSMark Fasheh static int ocfs2_force_read_journal(struct inode *inode); 55ccd979bdSMark Fasheh static int ocfs2_recover_node(struct ocfs2_super *osb, 56ccd979bdSMark Fasheh int node_num); 57ccd979bdSMark Fasheh static int __ocfs2_recovery_thread(void *arg); 58ccd979bdSMark Fasheh static int ocfs2_commit_cache(struct ocfs2_super *osb); 59ccd979bdSMark Fasheh static int ocfs2_wait_on_mount(struct ocfs2_super *osb); 60ccd979bdSMark Fasheh static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, 61ccd979bdSMark Fasheh int dirty); 62ccd979bdSMark Fasheh static int ocfs2_trylock_journal(struct ocfs2_super *osb, 63ccd979bdSMark Fasheh int slot_num); 64ccd979bdSMark Fasheh static int ocfs2_recover_orphans(struct ocfs2_super *osb, 65ccd979bdSMark Fasheh int slot); 66ccd979bdSMark Fasheh static int ocfs2_commit_thread(void *arg); 67ccd979bdSMark Fasheh 68ccd979bdSMark Fasheh static int ocfs2_commit_cache(struct ocfs2_super *osb) 69ccd979bdSMark Fasheh { 70ccd979bdSMark Fasheh int status = 0; 71ccd979bdSMark Fasheh unsigned int flushed; 72ccd979bdSMark Fasheh unsigned long old_id; 73ccd979bdSMark Fasheh struct ocfs2_journal *journal = NULL; 74ccd979bdSMark Fasheh 75ccd979bdSMark Fasheh mlog_entry_void(); 76ccd979bdSMark Fasheh 77ccd979bdSMark Fasheh journal = osb->journal; 78ccd979bdSMark Fasheh 79ccd979bdSMark Fasheh /* Flush all pending commits and checkpoint the journal. */ 80ccd979bdSMark Fasheh down_write(&journal->j_trans_barrier); 81ccd979bdSMark Fasheh 82ccd979bdSMark Fasheh if (atomic_read(&journal->j_num_trans) == 0) { 83ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 84ccd979bdSMark Fasheh mlog(0, "No transactions for me to flush!\n"); 85ccd979bdSMark Fasheh goto finally; 86ccd979bdSMark Fasheh } 87ccd979bdSMark Fasheh 88ccd979bdSMark Fasheh journal_lock_updates(journal->j_journal); 89ccd979bdSMark Fasheh status = journal_flush(journal->j_journal); 90ccd979bdSMark Fasheh journal_unlock_updates(journal->j_journal); 91ccd979bdSMark Fasheh if (status < 0) { 92ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 93ccd979bdSMark Fasheh mlog_errno(status); 94ccd979bdSMark Fasheh goto finally; 95ccd979bdSMark Fasheh } 96ccd979bdSMark Fasheh 97ccd979bdSMark Fasheh old_id = ocfs2_inc_trans_id(journal); 98ccd979bdSMark Fasheh 99ccd979bdSMark Fasheh flushed = atomic_read(&journal->j_num_trans); 100ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 101ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 102ccd979bdSMark Fasheh 103ccd979bdSMark Fasheh mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", 104ccd979bdSMark Fasheh journal->j_trans_id, flushed); 105ccd979bdSMark Fasheh 106ccd979bdSMark Fasheh ocfs2_kick_vote_thread(osb); 107ccd979bdSMark Fasheh wake_up(&journal->j_checkpointed); 108ccd979bdSMark Fasheh finally: 109ccd979bdSMark Fasheh mlog_exit(status); 110ccd979bdSMark Fasheh return status; 111ccd979bdSMark Fasheh } 112ccd979bdSMark Fasheh 113a301a27dSMark Fasheh static struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb) 114ccd979bdSMark Fasheh { 115ccd979bdSMark Fasheh struct ocfs2_journal_handle *retval = NULL; 116ccd979bdSMark Fasheh 117afae00abSSunil Mushran retval = kcalloc(1, sizeof(*retval), GFP_NOFS); 118ccd979bdSMark Fasheh if (!retval) { 119ccd979bdSMark Fasheh mlog(ML_ERROR, "Failed to allocate memory for journal " 120ccd979bdSMark Fasheh "handle!\n"); 121ccd979bdSMark Fasheh return NULL; 122ccd979bdSMark Fasheh } 123ccd979bdSMark Fasheh retval->k_handle = NULL; 124ccd979bdSMark Fasheh 125ccd979bdSMark Fasheh return retval; 126ccd979bdSMark Fasheh } 127ccd979bdSMark Fasheh 128ccd979bdSMark Fasheh /* pass it NULL and it will allocate a new handle object for you. If 129ccd979bdSMark Fasheh * you pass it a handle however, it may still return error, in which 130ccd979bdSMark Fasheh * case it has free'd the passed handle for you. */ 131ccd979bdSMark Fasheh struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb, 132ccd979bdSMark Fasheh int max_buffs) 133ccd979bdSMark Fasheh { 134ccd979bdSMark Fasheh int ret; 135ccd979bdSMark Fasheh journal_t *journal = osb->journal->j_journal; 13665eff9ccSMark Fasheh struct ocfs2_journal_handle *handle; 137ccd979bdSMark Fasheh 138ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb || !osb->journal->j_journal); 139ccd979bdSMark Fasheh 14065eff9ccSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 14165eff9ccSMark Fasheh return ERR_PTR(-EROFS); 142ccd979bdSMark Fasheh 143ccd979bdSMark Fasheh BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); 144ccd979bdSMark Fasheh BUG_ON(max_buffs <= 0); 145ccd979bdSMark Fasheh 146ccd979bdSMark Fasheh /* JBD might support this, but our journalling code doesn't yet. */ 147ccd979bdSMark Fasheh if (journal_current_handle()) { 148ccd979bdSMark Fasheh mlog(ML_ERROR, "Recursive transaction attempted!\n"); 149ccd979bdSMark Fasheh BUG(); 150ccd979bdSMark Fasheh } 151ccd979bdSMark Fasheh 152ccd979bdSMark Fasheh handle = ocfs2_alloc_handle(osb); 153ccd979bdSMark Fasheh if (!handle) { 154ccd979bdSMark Fasheh ret = -ENOMEM; 15565eff9ccSMark Fasheh mlog_errno(ret); 15665eff9ccSMark Fasheh return ERR_PTR(ret); 157ccd979bdSMark Fasheh } 158ccd979bdSMark Fasheh 159ccd979bdSMark Fasheh down_read(&osb->journal->j_trans_barrier); 160ccd979bdSMark Fasheh 161ccd979bdSMark Fasheh /* actually start the transaction now */ 162ccd979bdSMark Fasheh handle->k_handle = journal_start(journal, max_buffs); 163ccd979bdSMark Fasheh if (IS_ERR(handle->k_handle)) { 164ccd979bdSMark Fasheh up_read(&osb->journal->j_trans_barrier); 16565eff9ccSMark Fasheh kfree(handle); 166ccd979bdSMark Fasheh 167ccd979bdSMark Fasheh ret = PTR_ERR(handle->k_handle); 168ccd979bdSMark Fasheh handle->k_handle = NULL; 169ccd979bdSMark Fasheh mlog_errno(ret); 170ccd979bdSMark Fasheh 171ccd979bdSMark Fasheh if (is_journal_aborted(journal)) { 172ccd979bdSMark Fasheh ocfs2_abort(osb->sb, "Detected aborted journal"); 173ccd979bdSMark Fasheh ret = -EROFS; 174ccd979bdSMark Fasheh } 17565eff9ccSMark Fasheh return ERR_PTR(ret); 176ccd979bdSMark Fasheh } 177ccd979bdSMark Fasheh 178ccd979bdSMark Fasheh atomic_inc(&(osb->journal->j_num_trans)); 179ccd979bdSMark Fasheh 180ccd979bdSMark Fasheh return handle; 181ccd979bdSMark Fasheh } 182ccd979bdSMark Fasheh 18302dc1af4SMark Fasheh void ocfs2_commit_trans(struct ocfs2_super *osb, 18402dc1af4SMark Fasheh struct ocfs2_journal_handle *handle) 185ccd979bdSMark Fasheh { 186ccd979bdSMark Fasheh handle_t *jbd_handle; 187ccd979bdSMark Fasheh int retval; 18802dc1af4SMark Fasheh struct ocfs2_journal *journal = osb->journal; 189ccd979bdSMark Fasheh 190ccd979bdSMark Fasheh mlog_entry_void(); 191ccd979bdSMark Fasheh 192ccd979bdSMark Fasheh BUG_ON(!handle); 193ccd979bdSMark Fasheh 194c161f89bSMark Fasheh if (!handle->k_handle) { 195daf29e9cSMark Fasheh kfree(handle); 196ccd979bdSMark Fasheh mlog_exit_void(); 197ccd979bdSMark Fasheh return; 198ccd979bdSMark Fasheh } 199ccd979bdSMark Fasheh 200ccd979bdSMark Fasheh /* ocfs2_extend_trans may have had to call journal_restart 201ccd979bdSMark Fasheh * which will always commit the transaction, but may return 202ccd979bdSMark Fasheh * error for any number of reasons. If this is the case, we 203ccd979bdSMark Fasheh * clear k_handle as it's not valid any more. */ 204ccd979bdSMark Fasheh if (handle->k_handle) { 205ccd979bdSMark Fasheh jbd_handle = handle->k_handle; 206ccd979bdSMark Fasheh 207ccd979bdSMark Fasheh /* actually stop the transaction. if we've set h_sync, 208ccd979bdSMark Fasheh * it'll have been committed when we return */ 209ccd979bdSMark Fasheh retval = journal_stop(jbd_handle); 210ccd979bdSMark Fasheh if (retval < 0) { 211ccd979bdSMark Fasheh mlog_errno(retval); 212ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not commit transaction\n"); 213ccd979bdSMark Fasheh BUG(); 214ccd979bdSMark Fasheh } 215ccd979bdSMark Fasheh 216ccd979bdSMark Fasheh handle->k_handle = NULL; /* it's been free'd in journal_stop */ 217ccd979bdSMark Fasheh } 218ccd979bdSMark Fasheh 219ccd979bdSMark Fasheh up_read(&journal->j_trans_barrier); 220ccd979bdSMark Fasheh 221ccd979bdSMark Fasheh kfree(handle); 222ccd979bdSMark Fasheh mlog_exit_void(); 223ccd979bdSMark Fasheh } 224ccd979bdSMark Fasheh 225ccd979bdSMark Fasheh /* 226ccd979bdSMark Fasheh * 'nblocks' is what you want to add to the current 227ccd979bdSMark Fasheh * transaction. extend_trans will either extend the current handle by 228ccd979bdSMark Fasheh * nblocks, or commit it and start a new one with nblocks credits. 229ccd979bdSMark Fasheh * 230ccd979bdSMark Fasheh * WARNING: This will not release any semaphores or disk locks taken 231ccd979bdSMark Fasheh * during the transaction, so make sure they were taken *before* 232ccd979bdSMark Fasheh * start_trans or we'll have ordering deadlocks. 233ccd979bdSMark Fasheh * 234ccd979bdSMark Fasheh * WARNING2: Note that we do *not* drop j_trans_barrier here. This is 235ccd979bdSMark Fasheh * good because transaction ids haven't yet been recorded on the 236ccd979bdSMark Fasheh * cluster locks associated with this handle. 237ccd979bdSMark Fasheh */ 2381fc58146SMark Fasheh int ocfs2_extend_trans(handle_t *handle, int nblocks) 239ccd979bdSMark Fasheh { 240ccd979bdSMark Fasheh int status; 241ccd979bdSMark Fasheh 242ccd979bdSMark Fasheh BUG_ON(!handle); 243ccd979bdSMark Fasheh BUG_ON(!nblocks); 244ccd979bdSMark Fasheh 245ccd979bdSMark Fasheh mlog_entry_void(); 246ccd979bdSMark Fasheh 247ccd979bdSMark Fasheh mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); 248ccd979bdSMark Fasheh 2491fc58146SMark Fasheh status = journal_extend(handle, nblocks); 250ccd979bdSMark Fasheh if (status < 0) { 251ccd979bdSMark Fasheh mlog_errno(status); 252ccd979bdSMark Fasheh goto bail; 253ccd979bdSMark Fasheh } 254ccd979bdSMark Fasheh 255ccd979bdSMark Fasheh if (status > 0) { 256ccd979bdSMark Fasheh mlog(0, "journal_extend failed, trying journal_restart\n"); 2571fc58146SMark Fasheh status = journal_restart(handle, nblocks); 258ccd979bdSMark Fasheh if (status < 0) { 259ccd979bdSMark Fasheh mlog_errno(status); 260ccd979bdSMark Fasheh goto bail; 261ccd979bdSMark Fasheh } 26201ddf1e1SMark Fasheh } 263ccd979bdSMark Fasheh 264ccd979bdSMark Fasheh status = 0; 265ccd979bdSMark Fasheh bail: 266ccd979bdSMark Fasheh 267ccd979bdSMark Fasheh mlog_exit(status); 268ccd979bdSMark Fasheh return status; 269ccd979bdSMark Fasheh } 270ccd979bdSMark Fasheh 271ccd979bdSMark Fasheh int ocfs2_journal_access(struct ocfs2_journal_handle *handle, 272ccd979bdSMark Fasheh struct inode *inode, 273ccd979bdSMark Fasheh struct buffer_head *bh, 274ccd979bdSMark Fasheh int type) 275ccd979bdSMark Fasheh { 276ccd979bdSMark Fasheh int status; 277ccd979bdSMark Fasheh 278ccd979bdSMark Fasheh BUG_ON(!inode); 279ccd979bdSMark Fasheh BUG_ON(!handle); 280ccd979bdSMark Fasheh BUG_ON(!bh); 281ccd979bdSMark Fasheh 282205f87f6SBadari Pulavarty mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", 283ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr, type, 284ccd979bdSMark Fasheh (type == OCFS2_JOURNAL_ACCESS_CREATE) ? 285ccd979bdSMark Fasheh "OCFS2_JOURNAL_ACCESS_CREATE" : 286ccd979bdSMark Fasheh "OCFS2_JOURNAL_ACCESS_WRITE", 287ccd979bdSMark Fasheh bh->b_size); 288ccd979bdSMark Fasheh 289ccd979bdSMark Fasheh /* we can safely remove this assertion after testing. */ 290ccd979bdSMark Fasheh if (!buffer_uptodate(bh)) { 291ccd979bdSMark Fasheh mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); 292ccd979bdSMark Fasheh mlog(ML_ERROR, "b_blocknr=%llu\n", 293ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 294ccd979bdSMark Fasheh BUG(); 295ccd979bdSMark Fasheh } 296ccd979bdSMark Fasheh 297ccd979bdSMark Fasheh /* Set the current transaction information on the inode so 298ccd979bdSMark Fasheh * that the locking code knows whether it can drop it's locks 299ccd979bdSMark Fasheh * on this inode or not. We're protected from the commit 300ccd979bdSMark Fasheh * thread updating the current transaction id until 301ccd979bdSMark Fasheh * ocfs2_commit_trans() because ocfs2_start_trans() took 302ccd979bdSMark Fasheh * j_trans_barrier for us. */ 303ccd979bdSMark Fasheh ocfs2_set_inode_lock_trans(OCFS2_SB(inode->i_sb)->journal, inode); 304ccd979bdSMark Fasheh 305251b6eccSMark Fasheh mutex_lock(&OCFS2_I(inode)->ip_io_mutex); 306ccd979bdSMark Fasheh switch (type) { 307ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_CREATE: 308ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_WRITE: 309ccd979bdSMark Fasheh status = journal_get_write_access(handle->k_handle, bh); 310ccd979bdSMark Fasheh break; 311ccd979bdSMark Fasheh 312ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_UNDO: 313ccd979bdSMark Fasheh status = journal_get_undo_access(handle->k_handle, bh); 314ccd979bdSMark Fasheh break; 315ccd979bdSMark Fasheh 316ccd979bdSMark Fasheh default: 317ccd979bdSMark Fasheh status = -EINVAL; 318ccd979bdSMark Fasheh mlog(ML_ERROR, "Uknown access type!\n"); 319ccd979bdSMark Fasheh } 320251b6eccSMark Fasheh mutex_unlock(&OCFS2_I(inode)->ip_io_mutex); 321ccd979bdSMark Fasheh 322ccd979bdSMark Fasheh if (status < 0) 323ccd979bdSMark Fasheh mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", 324ccd979bdSMark Fasheh status, type); 325ccd979bdSMark Fasheh 326ccd979bdSMark Fasheh mlog_exit(status); 327ccd979bdSMark Fasheh return status; 328ccd979bdSMark Fasheh } 329ccd979bdSMark Fasheh 330ccd979bdSMark Fasheh int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle, 331ccd979bdSMark Fasheh struct buffer_head *bh) 332ccd979bdSMark Fasheh { 333ccd979bdSMark Fasheh int status; 334ccd979bdSMark Fasheh 335ccd979bdSMark Fasheh mlog_entry("(bh->b_blocknr=%llu)\n", 336ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 337ccd979bdSMark Fasheh 338ccd979bdSMark Fasheh status = journal_dirty_metadata(handle->k_handle, bh); 339ccd979bdSMark Fasheh if (status < 0) 340ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not dirty metadata buffer. " 341ccd979bdSMark Fasheh "(bh->b_blocknr=%llu)\n", 342ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 343ccd979bdSMark Fasheh 344ccd979bdSMark Fasheh mlog_exit(status); 345ccd979bdSMark Fasheh return status; 346ccd979bdSMark Fasheh } 347ccd979bdSMark Fasheh 348ccd979bdSMark Fasheh int ocfs2_journal_dirty_data(handle_t *handle, 349ccd979bdSMark Fasheh struct buffer_head *bh) 350ccd979bdSMark Fasheh { 351ccd979bdSMark Fasheh int err = journal_dirty_data(handle, bh); 352ccd979bdSMark Fasheh if (err) 353ccd979bdSMark Fasheh mlog_errno(err); 354ccd979bdSMark Fasheh /* TODO: When we can handle it, abort the handle and go RO on 355ccd979bdSMark Fasheh * error here. */ 356ccd979bdSMark Fasheh 357ccd979bdSMark Fasheh return err; 358ccd979bdSMark Fasheh } 359ccd979bdSMark Fasheh 360ccd979bdSMark Fasheh #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * 5) 361ccd979bdSMark Fasheh 362ccd979bdSMark Fasheh void ocfs2_set_journal_params(struct ocfs2_super *osb) 363ccd979bdSMark Fasheh { 364ccd979bdSMark Fasheh journal_t *journal = osb->journal->j_journal; 365ccd979bdSMark Fasheh 366ccd979bdSMark Fasheh spin_lock(&journal->j_state_lock); 367ccd979bdSMark Fasheh journal->j_commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; 368ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) 369ccd979bdSMark Fasheh journal->j_flags |= JFS_BARRIER; 370ccd979bdSMark Fasheh else 371ccd979bdSMark Fasheh journal->j_flags &= ~JFS_BARRIER; 372ccd979bdSMark Fasheh spin_unlock(&journal->j_state_lock); 373ccd979bdSMark Fasheh } 374ccd979bdSMark Fasheh 375ccd979bdSMark Fasheh int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) 376ccd979bdSMark Fasheh { 377ccd979bdSMark Fasheh int status = -1; 378ccd979bdSMark Fasheh struct inode *inode = NULL; /* the journal inode */ 379ccd979bdSMark Fasheh journal_t *j_journal = NULL; 380ccd979bdSMark Fasheh struct ocfs2_dinode *di = NULL; 381ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 382ccd979bdSMark Fasheh struct ocfs2_super *osb; 383ccd979bdSMark Fasheh int meta_lock = 0; 384ccd979bdSMark Fasheh 385ccd979bdSMark Fasheh mlog_entry_void(); 386ccd979bdSMark Fasheh 387ccd979bdSMark Fasheh BUG_ON(!journal); 388ccd979bdSMark Fasheh 389ccd979bdSMark Fasheh osb = journal->j_osb; 390ccd979bdSMark Fasheh 391ccd979bdSMark Fasheh /* already have the inode for our journal */ 392ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 393ccd979bdSMark Fasheh osb->slot_num); 394ccd979bdSMark Fasheh if (inode == NULL) { 395ccd979bdSMark Fasheh status = -EACCES; 396ccd979bdSMark Fasheh mlog_errno(status); 397ccd979bdSMark Fasheh goto done; 398ccd979bdSMark Fasheh } 399ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 400ccd979bdSMark Fasheh mlog(ML_ERROR, "access error (bad inode)\n"); 401ccd979bdSMark Fasheh iput(inode); 402ccd979bdSMark Fasheh inode = NULL; 403ccd979bdSMark Fasheh status = -EACCES; 404ccd979bdSMark Fasheh goto done; 405ccd979bdSMark Fasheh } 406ccd979bdSMark Fasheh 407ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 408ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count++; 409ccd979bdSMark Fasheh 4106eff5790SMark Fasheh /* Skip recovery waits here - journal inode metadata never 4116eff5790SMark Fasheh * changes in a live cluster so it can be considered an 4126eff5790SMark Fasheh * exception to the rule. */ 4134bcec184SMark Fasheh status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); 414ccd979bdSMark Fasheh if (status < 0) { 415ccd979bdSMark Fasheh if (status != -ERESTARTSYS) 416ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not get lock on journal!\n"); 417ccd979bdSMark Fasheh goto done; 418ccd979bdSMark Fasheh } 419ccd979bdSMark Fasheh 420ccd979bdSMark Fasheh meta_lock = 1; 421ccd979bdSMark Fasheh di = (struct ocfs2_dinode *)bh->b_data; 422ccd979bdSMark Fasheh 423ccd979bdSMark Fasheh if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) { 424ccd979bdSMark Fasheh mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", 425ccd979bdSMark Fasheh inode->i_size); 426ccd979bdSMark Fasheh status = -EINVAL; 427ccd979bdSMark Fasheh goto done; 428ccd979bdSMark Fasheh } 429ccd979bdSMark Fasheh 430ccd979bdSMark Fasheh mlog(0, "inode->i_size = %lld\n", inode->i_size); 4315515eff8SAndrew Morton mlog(0, "inode->i_blocks = %llu\n", 4325515eff8SAndrew Morton (unsigned long long)inode->i_blocks); 433ccd979bdSMark Fasheh mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters); 434ccd979bdSMark Fasheh 435ccd979bdSMark Fasheh /* call the kernels journal init function now */ 436ccd979bdSMark Fasheh j_journal = journal_init_inode(inode); 437ccd979bdSMark Fasheh if (j_journal == NULL) { 438ccd979bdSMark Fasheh mlog(ML_ERROR, "Linux journal layer error\n"); 439ccd979bdSMark Fasheh status = -EINVAL; 440ccd979bdSMark Fasheh goto done; 441ccd979bdSMark Fasheh } 442ccd979bdSMark Fasheh 443ccd979bdSMark Fasheh mlog(0, "Returned from journal_init_inode\n"); 444ccd979bdSMark Fasheh mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen); 445ccd979bdSMark Fasheh 446ccd979bdSMark Fasheh *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & 447ccd979bdSMark Fasheh OCFS2_JOURNAL_DIRTY_FL); 448ccd979bdSMark Fasheh 449ccd979bdSMark Fasheh journal->j_journal = j_journal; 450ccd979bdSMark Fasheh journal->j_inode = inode; 451ccd979bdSMark Fasheh journal->j_bh = bh; 452ccd979bdSMark Fasheh 453ccd979bdSMark Fasheh ocfs2_set_journal_params(osb); 454ccd979bdSMark Fasheh 455ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_LOADED; 456ccd979bdSMark Fasheh 457ccd979bdSMark Fasheh status = 0; 458ccd979bdSMark Fasheh done: 459ccd979bdSMark Fasheh if (status < 0) { 460ccd979bdSMark Fasheh if (meta_lock) 461ccd979bdSMark Fasheh ocfs2_meta_unlock(inode, 1); 462ccd979bdSMark Fasheh if (bh != NULL) 463ccd979bdSMark Fasheh brelse(bh); 464ccd979bdSMark Fasheh if (inode) { 465ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count--; 466ccd979bdSMark Fasheh iput(inode); 467ccd979bdSMark Fasheh } 468ccd979bdSMark Fasheh } 469ccd979bdSMark Fasheh 470ccd979bdSMark Fasheh mlog_exit(status); 471ccd979bdSMark Fasheh return status; 472ccd979bdSMark Fasheh } 473ccd979bdSMark Fasheh 474ccd979bdSMark Fasheh static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, 475ccd979bdSMark Fasheh int dirty) 476ccd979bdSMark Fasheh { 477ccd979bdSMark Fasheh int status; 478ccd979bdSMark Fasheh unsigned int flags; 479ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 480ccd979bdSMark Fasheh struct buffer_head *bh = journal->j_bh; 481ccd979bdSMark Fasheh struct ocfs2_dinode *fe; 482ccd979bdSMark Fasheh 483ccd979bdSMark Fasheh mlog_entry_void(); 484ccd979bdSMark Fasheh 485ccd979bdSMark Fasheh fe = (struct ocfs2_dinode *)bh->b_data; 486ccd979bdSMark Fasheh if (!OCFS2_IS_VALID_DINODE(fe)) { 487ccd979bdSMark Fasheh /* This is called from startup/shutdown which will 488ccd979bdSMark Fasheh * handle the errors in a specific manner, so no need 489ccd979bdSMark Fasheh * to call ocfs2_error() here. */ 490b0697053SMark Fasheh mlog(ML_ERROR, "Journal dinode %llu has invalid " 491b0697053SMark Fasheh "signature: %.*s", (unsigned long long)fe->i_blkno, 7, 492b0697053SMark Fasheh fe->i_signature); 493ccd979bdSMark Fasheh status = -EIO; 494ccd979bdSMark Fasheh goto out; 495ccd979bdSMark Fasheh } 496ccd979bdSMark Fasheh 497ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 498ccd979bdSMark Fasheh if (dirty) 499ccd979bdSMark Fasheh flags |= OCFS2_JOURNAL_DIRTY_FL; 500ccd979bdSMark Fasheh else 501ccd979bdSMark Fasheh flags &= ~OCFS2_JOURNAL_DIRTY_FL; 502ccd979bdSMark Fasheh fe->id1.journal1.ij_flags = cpu_to_le32(flags); 503ccd979bdSMark Fasheh 504ccd979bdSMark Fasheh status = ocfs2_write_block(osb, bh, journal->j_inode); 505ccd979bdSMark Fasheh if (status < 0) 506ccd979bdSMark Fasheh mlog_errno(status); 507ccd979bdSMark Fasheh 508ccd979bdSMark Fasheh out: 509ccd979bdSMark Fasheh mlog_exit(status); 510ccd979bdSMark Fasheh return status; 511ccd979bdSMark Fasheh } 512ccd979bdSMark Fasheh 513ccd979bdSMark Fasheh /* 514ccd979bdSMark Fasheh * If the journal has been kmalloc'd it needs to be freed after this 515ccd979bdSMark Fasheh * call. 516ccd979bdSMark Fasheh */ 517ccd979bdSMark Fasheh void ocfs2_journal_shutdown(struct ocfs2_super *osb) 518ccd979bdSMark Fasheh { 519ccd979bdSMark Fasheh struct ocfs2_journal *journal = NULL; 520ccd979bdSMark Fasheh int status = 0; 521ccd979bdSMark Fasheh struct inode *inode = NULL; 522ccd979bdSMark Fasheh int num_running_trans = 0; 523ccd979bdSMark Fasheh 524ccd979bdSMark Fasheh mlog_entry_void(); 525ccd979bdSMark Fasheh 526ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb); 527ccd979bdSMark Fasheh 528ccd979bdSMark Fasheh journal = osb->journal; 529ccd979bdSMark Fasheh if (!journal) 530ccd979bdSMark Fasheh goto done; 531ccd979bdSMark Fasheh 532ccd979bdSMark Fasheh inode = journal->j_inode; 533ccd979bdSMark Fasheh 534ccd979bdSMark Fasheh if (journal->j_state != OCFS2_JOURNAL_LOADED) 535ccd979bdSMark Fasheh goto done; 536ccd979bdSMark Fasheh 537ccd979bdSMark Fasheh /* need to inc inode use count as journal_destroy will iput. */ 538ccd979bdSMark Fasheh if (!igrab(inode)) 539ccd979bdSMark Fasheh BUG(); 540ccd979bdSMark Fasheh 541ccd979bdSMark Fasheh num_running_trans = atomic_read(&(osb->journal->j_num_trans)); 542ccd979bdSMark Fasheh if (num_running_trans > 0) 543ccd979bdSMark Fasheh mlog(0, "Shutting down journal: must wait on %d " 544ccd979bdSMark Fasheh "running transactions!\n", 545ccd979bdSMark Fasheh num_running_trans); 546ccd979bdSMark Fasheh 547ccd979bdSMark Fasheh /* Do a commit_cache here. It will flush our journal, *and* 548ccd979bdSMark Fasheh * release any locks that are still held. 549ccd979bdSMark Fasheh * set the SHUTDOWN flag and release the trans lock. 550ccd979bdSMark Fasheh * the commit thread will take the trans lock for us below. */ 551ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; 552ccd979bdSMark Fasheh 553ccd979bdSMark Fasheh /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not 554ccd979bdSMark Fasheh * drop the trans_lock (which we want to hold until we 555ccd979bdSMark Fasheh * completely destroy the journal. */ 556ccd979bdSMark Fasheh if (osb->commit_task) { 557ccd979bdSMark Fasheh /* Wait for the commit thread */ 558ccd979bdSMark Fasheh mlog(0, "Waiting for ocfs2commit to exit....\n"); 559ccd979bdSMark Fasheh kthread_stop(osb->commit_task); 560ccd979bdSMark Fasheh osb->commit_task = NULL; 561ccd979bdSMark Fasheh } 562ccd979bdSMark Fasheh 563ccd979bdSMark Fasheh BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); 564ccd979bdSMark Fasheh 565ccd979bdSMark Fasheh status = ocfs2_journal_toggle_dirty(osb, 0); 566ccd979bdSMark Fasheh if (status < 0) 567ccd979bdSMark Fasheh mlog_errno(status); 568ccd979bdSMark Fasheh 569ccd979bdSMark Fasheh /* Shutdown the kernel journal system */ 570ccd979bdSMark Fasheh journal_destroy(journal->j_journal); 571ccd979bdSMark Fasheh 572ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count--; 573ccd979bdSMark Fasheh 574ccd979bdSMark Fasheh /* unlock our journal */ 575ccd979bdSMark Fasheh ocfs2_meta_unlock(inode, 1); 576ccd979bdSMark Fasheh 577ccd979bdSMark Fasheh brelse(journal->j_bh); 578ccd979bdSMark Fasheh journal->j_bh = NULL; 579ccd979bdSMark Fasheh 580ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 581ccd979bdSMark Fasheh 582ccd979bdSMark Fasheh // up_write(&journal->j_trans_barrier); 583ccd979bdSMark Fasheh done: 584ccd979bdSMark Fasheh if (inode) 585ccd979bdSMark Fasheh iput(inode); 586ccd979bdSMark Fasheh mlog_exit_void(); 587ccd979bdSMark Fasheh } 588ccd979bdSMark Fasheh 589ccd979bdSMark Fasheh static void ocfs2_clear_journal_error(struct super_block *sb, 590ccd979bdSMark Fasheh journal_t *journal, 591ccd979bdSMark Fasheh int slot) 592ccd979bdSMark Fasheh { 593ccd979bdSMark Fasheh int olderr; 594ccd979bdSMark Fasheh 595ccd979bdSMark Fasheh olderr = journal_errno(journal); 596ccd979bdSMark Fasheh if (olderr) { 597ccd979bdSMark Fasheh mlog(ML_ERROR, "File system error %d recorded in " 598ccd979bdSMark Fasheh "journal %u.\n", olderr, slot); 599ccd979bdSMark Fasheh mlog(ML_ERROR, "File system on device %s needs checking.\n", 600ccd979bdSMark Fasheh sb->s_id); 601ccd979bdSMark Fasheh 602ccd979bdSMark Fasheh journal_ack_err(journal); 603ccd979bdSMark Fasheh journal_clear_err(journal); 604ccd979bdSMark Fasheh } 605ccd979bdSMark Fasheh } 606ccd979bdSMark Fasheh 607ccd979bdSMark Fasheh int ocfs2_journal_load(struct ocfs2_journal *journal) 608ccd979bdSMark Fasheh { 609ccd979bdSMark Fasheh int status = 0; 610ccd979bdSMark Fasheh struct ocfs2_super *osb; 611ccd979bdSMark Fasheh 612ccd979bdSMark Fasheh mlog_entry_void(); 613ccd979bdSMark Fasheh 614ccd979bdSMark Fasheh if (!journal) 615ccd979bdSMark Fasheh BUG(); 616ccd979bdSMark Fasheh 617ccd979bdSMark Fasheh osb = journal->j_osb; 618ccd979bdSMark Fasheh 619ccd979bdSMark Fasheh status = journal_load(journal->j_journal); 620ccd979bdSMark Fasheh if (status < 0) { 621ccd979bdSMark Fasheh mlog(ML_ERROR, "Failed to load journal!\n"); 622ccd979bdSMark Fasheh goto done; 623ccd979bdSMark Fasheh } 624ccd979bdSMark Fasheh 625ccd979bdSMark Fasheh ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); 626ccd979bdSMark Fasheh 627ccd979bdSMark Fasheh status = ocfs2_journal_toggle_dirty(osb, 1); 628ccd979bdSMark Fasheh if (status < 0) { 629ccd979bdSMark Fasheh mlog_errno(status); 630ccd979bdSMark Fasheh goto done; 631ccd979bdSMark Fasheh } 632ccd979bdSMark Fasheh 633ccd979bdSMark Fasheh /* Launch the commit thread */ 63478427043SMark Fasheh osb->commit_task = kthread_run(ocfs2_commit_thread, osb, "ocfs2cmt"); 635ccd979bdSMark Fasheh if (IS_ERR(osb->commit_task)) { 636ccd979bdSMark Fasheh status = PTR_ERR(osb->commit_task); 637ccd979bdSMark Fasheh osb->commit_task = NULL; 638ccd979bdSMark Fasheh mlog(ML_ERROR, "unable to launch ocfs2commit thread, error=%d", 639ccd979bdSMark Fasheh status); 640ccd979bdSMark Fasheh goto done; 641ccd979bdSMark Fasheh } 642ccd979bdSMark Fasheh 643ccd979bdSMark Fasheh done: 644ccd979bdSMark Fasheh mlog_exit(status); 645ccd979bdSMark Fasheh return status; 646ccd979bdSMark Fasheh } 647ccd979bdSMark Fasheh 648ccd979bdSMark Fasheh 649ccd979bdSMark Fasheh /* 'full' flag tells us whether we clear out all blocks or if we just 650ccd979bdSMark Fasheh * mark the journal clean */ 651ccd979bdSMark Fasheh int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) 652ccd979bdSMark Fasheh { 653ccd979bdSMark Fasheh int status; 654ccd979bdSMark Fasheh 655ccd979bdSMark Fasheh mlog_entry_void(); 656ccd979bdSMark Fasheh 657ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!journal); 658ccd979bdSMark Fasheh 659ccd979bdSMark Fasheh status = journal_wipe(journal->j_journal, full); 660ccd979bdSMark Fasheh if (status < 0) { 661ccd979bdSMark Fasheh mlog_errno(status); 662ccd979bdSMark Fasheh goto bail; 663ccd979bdSMark Fasheh } 664ccd979bdSMark Fasheh 665ccd979bdSMark Fasheh status = ocfs2_journal_toggle_dirty(journal->j_osb, 0); 666ccd979bdSMark Fasheh if (status < 0) 667ccd979bdSMark Fasheh mlog_errno(status); 668ccd979bdSMark Fasheh 669ccd979bdSMark Fasheh bail: 670ccd979bdSMark Fasheh mlog_exit(status); 671ccd979bdSMark Fasheh return status; 672ccd979bdSMark Fasheh } 673ccd979bdSMark Fasheh 674ccd979bdSMark Fasheh /* 675ccd979bdSMark Fasheh * JBD Might read a cached version of another nodes journal file. We 676ccd979bdSMark Fasheh * don't want this as this file changes often and we get no 677ccd979bdSMark Fasheh * notification on those changes. The only way to be sure that we've 678ccd979bdSMark Fasheh * got the most up to date version of those blocks then is to force 679ccd979bdSMark Fasheh * read them off disk. Just searching through the buffer cache won't 680ccd979bdSMark Fasheh * work as there may be pages backing this file which are still marked 681ccd979bdSMark Fasheh * up to date. We know things can't change on this file underneath us 682ccd979bdSMark Fasheh * as we have the lock by now :) 683ccd979bdSMark Fasheh */ 684ccd979bdSMark Fasheh static int ocfs2_force_read_journal(struct inode *inode) 685ccd979bdSMark Fasheh { 686ccd979bdSMark Fasheh int status = 0; 687ccd979bdSMark Fasheh int i, p_blocks; 688ccd979bdSMark Fasheh u64 v_blkno, p_blkno; 689ccd979bdSMark Fasheh #define CONCURRENT_JOURNAL_FILL 32 690ccd979bdSMark Fasheh struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; 691ccd979bdSMark Fasheh 692ccd979bdSMark Fasheh mlog_entry_void(); 693ccd979bdSMark Fasheh 694ccd979bdSMark Fasheh BUG_ON(inode->i_blocks != 695ccd979bdSMark Fasheh ocfs2_align_bytes_to_sectors(i_size_read(inode))); 696ccd979bdSMark Fasheh 697ccd979bdSMark Fasheh memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); 698ccd979bdSMark Fasheh 6995515eff8SAndrew Morton mlog(0, "Force reading %llu blocks\n", 7005515eff8SAndrew Morton (unsigned long long)(inode->i_blocks >> 7015515eff8SAndrew Morton (inode->i_sb->s_blocksize_bits - 9))); 702ccd979bdSMark Fasheh 703ccd979bdSMark Fasheh v_blkno = 0; 704ccd979bdSMark Fasheh while (v_blkno < 705ccd979bdSMark Fasheh (inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9))) { 706ccd979bdSMark Fasheh 707ccd979bdSMark Fasheh status = ocfs2_extent_map_get_blocks(inode, v_blkno, 708ccd979bdSMark Fasheh 1, &p_blkno, 709ccd979bdSMark Fasheh &p_blocks); 710ccd979bdSMark Fasheh if (status < 0) { 711ccd979bdSMark Fasheh mlog_errno(status); 712ccd979bdSMark Fasheh goto bail; 713ccd979bdSMark Fasheh } 714ccd979bdSMark Fasheh 715ccd979bdSMark Fasheh if (p_blocks > CONCURRENT_JOURNAL_FILL) 716ccd979bdSMark Fasheh p_blocks = CONCURRENT_JOURNAL_FILL; 717ccd979bdSMark Fasheh 718dd4a2c2bSMark Fasheh /* We are reading journal data which should not 719dd4a2c2bSMark Fasheh * be put in the uptodate cache */ 720ccd979bdSMark Fasheh status = ocfs2_read_blocks(OCFS2_SB(inode->i_sb), 721ccd979bdSMark Fasheh p_blkno, p_blocks, bhs, 0, 722dd4a2c2bSMark Fasheh NULL); 723ccd979bdSMark Fasheh if (status < 0) { 724ccd979bdSMark Fasheh mlog_errno(status); 725ccd979bdSMark Fasheh goto bail; 726ccd979bdSMark Fasheh } 727ccd979bdSMark Fasheh 728ccd979bdSMark Fasheh for(i = 0; i < p_blocks; i++) { 729ccd979bdSMark Fasheh brelse(bhs[i]); 730ccd979bdSMark Fasheh bhs[i] = NULL; 731ccd979bdSMark Fasheh } 732ccd979bdSMark Fasheh 733ccd979bdSMark Fasheh v_blkno += p_blocks; 734ccd979bdSMark Fasheh } 735ccd979bdSMark Fasheh 736ccd979bdSMark Fasheh bail: 737ccd979bdSMark Fasheh for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) 738ccd979bdSMark Fasheh if (bhs[i]) 739ccd979bdSMark Fasheh brelse(bhs[i]); 740ccd979bdSMark Fasheh mlog_exit(status); 741ccd979bdSMark Fasheh return status; 742ccd979bdSMark Fasheh } 743ccd979bdSMark Fasheh 744ccd979bdSMark Fasheh struct ocfs2_la_recovery_item { 745ccd979bdSMark Fasheh struct list_head lri_list; 746ccd979bdSMark Fasheh int lri_slot; 747ccd979bdSMark Fasheh struct ocfs2_dinode *lri_la_dinode; 748ccd979bdSMark Fasheh struct ocfs2_dinode *lri_tl_dinode; 749ccd979bdSMark Fasheh }; 750ccd979bdSMark Fasheh 751ccd979bdSMark Fasheh /* Does the second half of the recovery process. By this point, the 752ccd979bdSMark Fasheh * node is marked clean and can actually be considered recovered, 753ccd979bdSMark Fasheh * hence it's no longer in the recovery map, but there's still some 754ccd979bdSMark Fasheh * cleanup we can do which shouldn't happen within the recovery thread 755ccd979bdSMark Fasheh * as locking in that context becomes very difficult if we are to take 756ccd979bdSMark Fasheh * recovering nodes into account. 757ccd979bdSMark Fasheh * 758ccd979bdSMark Fasheh * NOTE: This function can and will sleep on recovery of other nodes 759ccd979bdSMark Fasheh * during cluster locking, just like any other ocfs2 process. 760ccd979bdSMark Fasheh */ 761ccd979bdSMark Fasheh void ocfs2_complete_recovery(void *data) 762ccd979bdSMark Fasheh { 763ccd979bdSMark Fasheh int ret; 764ccd979bdSMark Fasheh struct ocfs2_super *osb = data; 765ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 766ccd979bdSMark Fasheh struct ocfs2_dinode *la_dinode, *tl_dinode; 767ccd979bdSMark Fasheh struct ocfs2_la_recovery_item *item; 768ccd979bdSMark Fasheh struct list_head *p, *n; 769ccd979bdSMark Fasheh LIST_HEAD(tmp_la_list); 770ccd979bdSMark Fasheh 771ccd979bdSMark Fasheh mlog_entry_void(); 772ccd979bdSMark Fasheh 773ccd979bdSMark Fasheh mlog(0, "completing recovery from keventd\n"); 774ccd979bdSMark Fasheh 775ccd979bdSMark Fasheh spin_lock(&journal->j_lock); 776ccd979bdSMark Fasheh list_splice_init(&journal->j_la_cleanups, &tmp_la_list); 777ccd979bdSMark Fasheh spin_unlock(&journal->j_lock); 778ccd979bdSMark Fasheh 779ccd979bdSMark Fasheh list_for_each_safe(p, n, &tmp_la_list) { 780ccd979bdSMark Fasheh item = list_entry(p, struct ocfs2_la_recovery_item, lri_list); 781ccd979bdSMark Fasheh list_del_init(&item->lri_list); 782ccd979bdSMark Fasheh 783ccd979bdSMark Fasheh mlog(0, "Complete recovery for slot %d\n", item->lri_slot); 784ccd979bdSMark Fasheh 785ccd979bdSMark Fasheh la_dinode = item->lri_la_dinode; 786ccd979bdSMark Fasheh if (la_dinode) { 787b0697053SMark Fasheh mlog(0, "Clean up local alloc %llu\n", 788b0697053SMark Fasheh (unsigned long long)la_dinode->i_blkno); 789ccd979bdSMark Fasheh 790ccd979bdSMark Fasheh ret = ocfs2_complete_local_alloc_recovery(osb, 791ccd979bdSMark Fasheh la_dinode); 792ccd979bdSMark Fasheh if (ret < 0) 793ccd979bdSMark Fasheh mlog_errno(ret); 794ccd979bdSMark Fasheh 795ccd979bdSMark Fasheh kfree(la_dinode); 796ccd979bdSMark Fasheh } 797ccd979bdSMark Fasheh 798ccd979bdSMark Fasheh tl_dinode = item->lri_tl_dinode; 799ccd979bdSMark Fasheh if (tl_dinode) { 800b0697053SMark Fasheh mlog(0, "Clean up truncate log %llu\n", 801b0697053SMark Fasheh (unsigned long long)tl_dinode->i_blkno); 802ccd979bdSMark Fasheh 803ccd979bdSMark Fasheh ret = ocfs2_complete_truncate_log_recovery(osb, 804ccd979bdSMark Fasheh tl_dinode); 805ccd979bdSMark Fasheh if (ret < 0) 806ccd979bdSMark Fasheh mlog_errno(ret); 807ccd979bdSMark Fasheh 808ccd979bdSMark Fasheh kfree(tl_dinode); 809ccd979bdSMark Fasheh } 810ccd979bdSMark Fasheh 811ccd979bdSMark Fasheh ret = ocfs2_recover_orphans(osb, item->lri_slot); 812ccd979bdSMark Fasheh if (ret < 0) 813ccd979bdSMark Fasheh mlog_errno(ret); 814ccd979bdSMark Fasheh 815ccd979bdSMark Fasheh kfree(item); 816ccd979bdSMark Fasheh } 817ccd979bdSMark Fasheh 818ccd979bdSMark Fasheh mlog(0, "Recovery completion\n"); 819ccd979bdSMark Fasheh mlog_exit_void(); 820ccd979bdSMark Fasheh } 821ccd979bdSMark Fasheh 822ccd979bdSMark Fasheh /* NOTE: This function always eats your references to la_dinode and 823ccd979bdSMark Fasheh * tl_dinode, either manually on error, or by passing them to 824ccd979bdSMark Fasheh * ocfs2_complete_recovery */ 825ccd979bdSMark Fasheh static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, 826ccd979bdSMark Fasheh int slot_num, 827ccd979bdSMark Fasheh struct ocfs2_dinode *la_dinode, 828ccd979bdSMark Fasheh struct ocfs2_dinode *tl_dinode) 829ccd979bdSMark Fasheh { 830ccd979bdSMark Fasheh struct ocfs2_la_recovery_item *item; 831ccd979bdSMark Fasheh 832afae00abSSunil Mushran item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); 833ccd979bdSMark Fasheh if (!item) { 834ccd979bdSMark Fasheh /* Though we wish to avoid it, we are in fact safe in 835ccd979bdSMark Fasheh * skipping local alloc cleanup as fsck.ocfs2 is more 836ccd979bdSMark Fasheh * than capable of reclaiming unused space. */ 837ccd979bdSMark Fasheh if (la_dinode) 838ccd979bdSMark Fasheh kfree(la_dinode); 839ccd979bdSMark Fasheh 840ccd979bdSMark Fasheh if (tl_dinode) 841ccd979bdSMark Fasheh kfree(tl_dinode); 842ccd979bdSMark Fasheh 843ccd979bdSMark Fasheh mlog_errno(-ENOMEM); 844ccd979bdSMark Fasheh return; 845ccd979bdSMark Fasheh } 846ccd979bdSMark Fasheh 847ccd979bdSMark Fasheh INIT_LIST_HEAD(&item->lri_list); 848ccd979bdSMark Fasheh item->lri_la_dinode = la_dinode; 849ccd979bdSMark Fasheh item->lri_slot = slot_num; 850ccd979bdSMark Fasheh item->lri_tl_dinode = tl_dinode; 851ccd979bdSMark Fasheh 852ccd979bdSMark Fasheh spin_lock(&journal->j_lock); 853ccd979bdSMark Fasheh list_add_tail(&item->lri_list, &journal->j_la_cleanups); 854ccd979bdSMark Fasheh queue_work(ocfs2_wq, &journal->j_recovery_work); 855ccd979bdSMark Fasheh spin_unlock(&journal->j_lock); 856ccd979bdSMark Fasheh } 857ccd979bdSMark Fasheh 858ccd979bdSMark Fasheh /* Called by the mount code to queue recovery the last part of 859ccd979bdSMark Fasheh * recovery for it's own slot. */ 860ccd979bdSMark Fasheh void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) 861ccd979bdSMark Fasheh { 862ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 863ccd979bdSMark Fasheh 864ccd979bdSMark Fasheh if (osb->dirty) { 865ccd979bdSMark Fasheh /* No need to queue up our truncate_log as regular 866ccd979bdSMark Fasheh * cleanup will catch that. */ 867ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(journal, 868ccd979bdSMark Fasheh osb->slot_num, 869ccd979bdSMark Fasheh osb->local_alloc_copy, 870ccd979bdSMark Fasheh NULL); 871ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 872ccd979bdSMark Fasheh 873ccd979bdSMark Fasheh osb->local_alloc_copy = NULL; 874ccd979bdSMark Fasheh osb->dirty = 0; 875ccd979bdSMark Fasheh } 876ccd979bdSMark Fasheh } 877ccd979bdSMark Fasheh 878ccd979bdSMark Fasheh static int __ocfs2_recovery_thread(void *arg) 879ccd979bdSMark Fasheh { 880ccd979bdSMark Fasheh int status, node_num; 881ccd979bdSMark Fasheh struct ocfs2_super *osb = arg; 882ccd979bdSMark Fasheh 883ccd979bdSMark Fasheh mlog_entry_void(); 884ccd979bdSMark Fasheh 885ccd979bdSMark Fasheh status = ocfs2_wait_on_mount(osb); 886ccd979bdSMark Fasheh if (status < 0) { 887ccd979bdSMark Fasheh goto bail; 888ccd979bdSMark Fasheh } 889ccd979bdSMark Fasheh 890ccd979bdSMark Fasheh restart: 891ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 892ccd979bdSMark Fasheh if (status < 0) { 893ccd979bdSMark Fasheh mlog_errno(status); 894ccd979bdSMark Fasheh goto bail; 895ccd979bdSMark Fasheh } 896ccd979bdSMark Fasheh 897ccd979bdSMark Fasheh while(!ocfs2_node_map_is_empty(osb, &osb->recovery_map)) { 898ccd979bdSMark Fasheh node_num = ocfs2_node_map_first_set_bit(osb, 899ccd979bdSMark Fasheh &osb->recovery_map); 900ccd979bdSMark Fasheh if (node_num == O2NM_INVALID_NODE_NUM) { 901ccd979bdSMark Fasheh mlog(0, "Out of nodes to recover.\n"); 902ccd979bdSMark Fasheh break; 903ccd979bdSMark Fasheh } 904ccd979bdSMark Fasheh 905ccd979bdSMark Fasheh status = ocfs2_recover_node(osb, node_num); 906ccd979bdSMark Fasheh if (status < 0) { 907ccd979bdSMark Fasheh mlog(ML_ERROR, 908ccd979bdSMark Fasheh "Error %d recovering node %d on device (%u,%u)!\n", 909ccd979bdSMark Fasheh status, node_num, 910ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 911ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume requires unmount.\n"); 912ccd979bdSMark Fasheh continue; 913ccd979bdSMark Fasheh } 914ccd979bdSMark Fasheh 915ccd979bdSMark Fasheh ocfs2_recovery_map_clear(osb, node_num); 916ccd979bdSMark Fasheh } 917ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 918ccd979bdSMark Fasheh 919ccd979bdSMark Fasheh /* We always run recovery on our own orphan dir - the dead 920ccd979bdSMark Fasheh * node(s) may have voted "no" on an inode delete earlier. A 921ccd979bdSMark Fasheh * revote is therefore required. */ 922ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, 923ccd979bdSMark Fasheh NULL); 924ccd979bdSMark Fasheh 925ccd979bdSMark Fasheh bail: 926c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 927ccd979bdSMark Fasheh if (!status && 928ccd979bdSMark Fasheh !ocfs2_node_map_is_empty(osb, &osb->recovery_map)) { 929c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 930ccd979bdSMark Fasheh goto restart; 931ccd979bdSMark Fasheh } 932ccd979bdSMark Fasheh 933ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 934ccd979bdSMark Fasheh mb(); /* sync with ocfs2_recovery_thread_running */ 935ccd979bdSMark Fasheh wake_up(&osb->recovery_event); 936ccd979bdSMark Fasheh 937c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 938ccd979bdSMark Fasheh 939ccd979bdSMark Fasheh mlog_exit(status); 940ccd979bdSMark Fasheh /* no one is callint kthread_stop() for us so the kthread() api 941ccd979bdSMark Fasheh * requires that we call do_exit(). And it isn't exported, but 942ccd979bdSMark Fasheh * complete_and_exit() seems to be a minimal wrapper around it. */ 943ccd979bdSMark Fasheh complete_and_exit(NULL, status); 944ccd979bdSMark Fasheh return status; 945ccd979bdSMark Fasheh } 946ccd979bdSMark Fasheh 947ccd979bdSMark Fasheh void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) 948ccd979bdSMark Fasheh { 949ccd979bdSMark Fasheh mlog_entry("(node_num=%d, osb->node_num = %d)\n", 950ccd979bdSMark Fasheh node_num, osb->node_num); 951ccd979bdSMark Fasheh 952c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 953ccd979bdSMark Fasheh if (osb->disable_recovery) 954ccd979bdSMark Fasheh goto out; 955ccd979bdSMark Fasheh 956ccd979bdSMark Fasheh /* People waiting on recovery will wait on 957ccd979bdSMark Fasheh * the recovery map to empty. */ 958ccd979bdSMark Fasheh if (!ocfs2_recovery_map_set(osb, node_num)) 959ccd979bdSMark Fasheh mlog(0, "node %d already be in recovery.\n", node_num); 960ccd979bdSMark Fasheh 961ccd979bdSMark Fasheh mlog(0, "starting recovery thread...\n"); 962ccd979bdSMark Fasheh 963ccd979bdSMark Fasheh if (osb->recovery_thread_task) 964ccd979bdSMark Fasheh goto out; 965ccd979bdSMark Fasheh 966ccd979bdSMark Fasheh osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, 96778427043SMark Fasheh "ocfs2rec"); 968ccd979bdSMark Fasheh if (IS_ERR(osb->recovery_thread_task)) { 969ccd979bdSMark Fasheh mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); 970ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 971ccd979bdSMark Fasheh } 972ccd979bdSMark Fasheh 973ccd979bdSMark Fasheh out: 974c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 975ccd979bdSMark Fasheh wake_up(&osb->recovery_event); 976ccd979bdSMark Fasheh 977ccd979bdSMark Fasheh mlog_exit_void(); 978ccd979bdSMark Fasheh } 979ccd979bdSMark Fasheh 980ccd979bdSMark Fasheh /* Does the actual journal replay and marks the journal inode as 981ccd979bdSMark Fasheh * clean. Will only replay if the journal inode is marked dirty. */ 982ccd979bdSMark Fasheh static int ocfs2_replay_journal(struct ocfs2_super *osb, 983ccd979bdSMark Fasheh int node_num, 984ccd979bdSMark Fasheh int slot_num) 985ccd979bdSMark Fasheh { 986ccd979bdSMark Fasheh int status; 987ccd979bdSMark Fasheh int got_lock = 0; 988ccd979bdSMark Fasheh unsigned int flags; 989ccd979bdSMark Fasheh struct inode *inode = NULL; 990ccd979bdSMark Fasheh struct ocfs2_dinode *fe; 991ccd979bdSMark Fasheh journal_t *journal = NULL; 992ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 993ccd979bdSMark Fasheh 994ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 995ccd979bdSMark Fasheh slot_num); 996ccd979bdSMark Fasheh if (inode == NULL) { 997ccd979bdSMark Fasheh status = -EACCES; 998ccd979bdSMark Fasheh mlog_errno(status); 999ccd979bdSMark Fasheh goto done; 1000ccd979bdSMark Fasheh } 1001ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 1002ccd979bdSMark Fasheh status = -EACCES; 1003ccd979bdSMark Fasheh iput(inode); 1004ccd979bdSMark Fasheh inode = NULL; 1005ccd979bdSMark Fasheh mlog_errno(status); 1006ccd979bdSMark Fasheh goto done; 1007ccd979bdSMark Fasheh } 1008ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 1009ccd979bdSMark Fasheh 10104bcec184SMark Fasheh status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); 1011ccd979bdSMark Fasheh if (status < 0) { 1012ccd979bdSMark Fasheh mlog(0, "status returned from ocfs2_meta_lock=%d\n", status); 1013ccd979bdSMark Fasheh if (status != -ERESTARTSYS) 1014ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not lock journal!\n"); 1015ccd979bdSMark Fasheh goto done; 1016ccd979bdSMark Fasheh } 1017ccd979bdSMark Fasheh got_lock = 1; 1018ccd979bdSMark Fasheh 1019ccd979bdSMark Fasheh fe = (struct ocfs2_dinode *) bh->b_data; 1020ccd979bdSMark Fasheh 1021ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 1022ccd979bdSMark Fasheh 1023ccd979bdSMark Fasheh if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { 1024ccd979bdSMark Fasheh mlog(0, "No recovery required for node %d\n", node_num); 1025ccd979bdSMark Fasheh goto done; 1026ccd979bdSMark Fasheh } 1027ccd979bdSMark Fasheh 1028ccd979bdSMark Fasheh mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n", 1029ccd979bdSMark Fasheh node_num, slot_num, 1030ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1031ccd979bdSMark Fasheh 1032ccd979bdSMark Fasheh OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); 1033ccd979bdSMark Fasheh 1034ccd979bdSMark Fasheh status = ocfs2_force_read_journal(inode); 1035ccd979bdSMark Fasheh if (status < 0) { 1036ccd979bdSMark Fasheh mlog_errno(status); 1037ccd979bdSMark Fasheh goto done; 1038ccd979bdSMark Fasheh } 1039ccd979bdSMark Fasheh 1040ccd979bdSMark Fasheh mlog(0, "calling journal_init_inode\n"); 1041ccd979bdSMark Fasheh journal = journal_init_inode(inode); 1042ccd979bdSMark Fasheh if (journal == NULL) { 1043ccd979bdSMark Fasheh mlog(ML_ERROR, "Linux journal layer error\n"); 1044ccd979bdSMark Fasheh status = -EIO; 1045ccd979bdSMark Fasheh goto done; 1046ccd979bdSMark Fasheh } 1047ccd979bdSMark Fasheh 1048ccd979bdSMark Fasheh status = journal_load(journal); 1049ccd979bdSMark Fasheh if (status < 0) { 1050ccd979bdSMark Fasheh mlog_errno(status); 1051ccd979bdSMark Fasheh if (!igrab(inode)) 1052ccd979bdSMark Fasheh BUG(); 1053ccd979bdSMark Fasheh journal_destroy(journal); 1054ccd979bdSMark Fasheh goto done; 1055ccd979bdSMark Fasheh } 1056ccd979bdSMark Fasheh 1057ccd979bdSMark Fasheh ocfs2_clear_journal_error(osb->sb, journal, slot_num); 1058ccd979bdSMark Fasheh 1059ccd979bdSMark Fasheh /* wipe the journal */ 1060ccd979bdSMark Fasheh mlog(0, "flushing the journal.\n"); 1061ccd979bdSMark Fasheh journal_lock_updates(journal); 1062ccd979bdSMark Fasheh status = journal_flush(journal); 1063ccd979bdSMark Fasheh journal_unlock_updates(journal); 1064ccd979bdSMark Fasheh if (status < 0) 1065ccd979bdSMark Fasheh mlog_errno(status); 1066ccd979bdSMark Fasheh 1067ccd979bdSMark Fasheh /* This will mark the node clean */ 1068ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 1069ccd979bdSMark Fasheh flags &= ~OCFS2_JOURNAL_DIRTY_FL; 1070ccd979bdSMark Fasheh fe->id1.journal1.ij_flags = cpu_to_le32(flags); 1071ccd979bdSMark Fasheh 1072ccd979bdSMark Fasheh status = ocfs2_write_block(osb, bh, inode); 1073ccd979bdSMark Fasheh if (status < 0) 1074ccd979bdSMark Fasheh mlog_errno(status); 1075ccd979bdSMark Fasheh 1076ccd979bdSMark Fasheh if (!igrab(inode)) 1077ccd979bdSMark Fasheh BUG(); 1078ccd979bdSMark Fasheh 1079ccd979bdSMark Fasheh journal_destroy(journal); 1080ccd979bdSMark Fasheh 1081ccd979bdSMark Fasheh done: 1082ccd979bdSMark Fasheh /* drop the lock on this nodes journal */ 1083ccd979bdSMark Fasheh if (got_lock) 1084ccd979bdSMark Fasheh ocfs2_meta_unlock(inode, 1); 1085ccd979bdSMark Fasheh 1086ccd979bdSMark Fasheh if (inode) 1087ccd979bdSMark Fasheh iput(inode); 1088ccd979bdSMark Fasheh 1089ccd979bdSMark Fasheh if (bh) 1090ccd979bdSMark Fasheh brelse(bh); 1091ccd979bdSMark Fasheh 1092ccd979bdSMark Fasheh mlog_exit(status); 1093ccd979bdSMark Fasheh return status; 1094ccd979bdSMark Fasheh } 1095ccd979bdSMark Fasheh 1096ccd979bdSMark Fasheh /* 1097ccd979bdSMark Fasheh * Do the most important parts of node recovery: 1098ccd979bdSMark Fasheh * - Replay it's journal 1099ccd979bdSMark Fasheh * - Stamp a clean local allocator file 1100ccd979bdSMark Fasheh * - Stamp a clean truncate log 1101ccd979bdSMark Fasheh * - Mark the node clean 1102ccd979bdSMark Fasheh * 1103ccd979bdSMark Fasheh * If this function completes without error, a node in OCFS2 can be 1104ccd979bdSMark Fasheh * said to have been safely recovered. As a result, failure during the 1105ccd979bdSMark Fasheh * second part of a nodes recovery process (local alloc recovery) is 1106ccd979bdSMark Fasheh * far less concerning. 1107ccd979bdSMark Fasheh */ 1108ccd979bdSMark Fasheh static int ocfs2_recover_node(struct ocfs2_super *osb, 1109ccd979bdSMark Fasheh int node_num) 1110ccd979bdSMark Fasheh { 1111ccd979bdSMark Fasheh int status = 0; 1112ccd979bdSMark Fasheh int slot_num; 1113ccd979bdSMark Fasheh struct ocfs2_slot_info *si = osb->slot_info; 1114ccd979bdSMark Fasheh struct ocfs2_dinode *la_copy = NULL; 1115ccd979bdSMark Fasheh struct ocfs2_dinode *tl_copy = NULL; 1116ccd979bdSMark Fasheh 1117ccd979bdSMark Fasheh mlog_entry("(node_num=%d, osb->node_num = %d)\n", 1118ccd979bdSMark Fasheh node_num, osb->node_num); 1119ccd979bdSMark Fasheh 1120ccd979bdSMark Fasheh mlog(0, "checking node %d\n", node_num); 1121ccd979bdSMark Fasheh 1122ccd979bdSMark Fasheh /* Should not ever be called to recover ourselves -- in that 1123ccd979bdSMark Fasheh * case we should've called ocfs2_journal_load instead. */ 1124ebdec83bSEric Sesterhenn / snakebyte BUG_ON(osb->node_num == node_num); 1125ccd979bdSMark Fasheh 1126ccd979bdSMark Fasheh slot_num = ocfs2_node_num_to_slot(si, node_num); 1127ccd979bdSMark Fasheh if (slot_num == OCFS2_INVALID_SLOT) { 1128ccd979bdSMark Fasheh status = 0; 1129ccd979bdSMark Fasheh mlog(0, "no slot for this node, so no recovery required.\n"); 1130ccd979bdSMark Fasheh goto done; 1131ccd979bdSMark Fasheh } 1132ccd979bdSMark Fasheh 1133ccd979bdSMark Fasheh mlog(0, "node %d was using slot %d\n", node_num, slot_num); 1134ccd979bdSMark Fasheh 1135ccd979bdSMark Fasheh status = ocfs2_replay_journal(osb, node_num, slot_num); 1136ccd979bdSMark Fasheh if (status < 0) { 1137ccd979bdSMark Fasheh mlog_errno(status); 1138ccd979bdSMark Fasheh goto done; 1139ccd979bdSMark Fasheh } 1140ccd979bdSMark Fasheh 1141ccd979bdSMark Fasheh /* Stamp a clean local alloc file AFTER recovering the journal... */ 1142ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); 1143ccd979bdSMark Fasheh if (status < 0) { 1144ccd979bdSMark Fasheh mlog_errno(status); 1145ccd979bdSMark Fasheh goto done; 1146ccd979bdSMark Fasheh } 1147ccd979bdSMark Fasheh 1148ccd979bdSMark Fasheh /* An error from begin_truncate_log_recovery is not 1149ccd979bdSMark Fasheh * serious enough to warrant halting the rest of 1150ccd979bdSMark Fasheh * recovery. */ 1151ccd979bdSMark Fasheh status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); 1152ccd979bdSMark Fasheh if (status < 0) 1153ccd979bdSMark Fasheh mlog_errno(status); 1154ccd979bdSMark Fasheh 1155ccd979bdSMark Fasheh /* Likewise, this would be a strange but ultimately not so 1156ccd979bdSMark Fasheh * harmful place to get an error... */ 1157ccd979bdSMark Fasheh ocfs2_clear_slot(si, slot_num); 1158ccd979bdSMark Fasheh status = ocfs2_update_disk_slots(osb, si); 1159ccd979bdSMark Fasheh if (status < 0) 1160ccd979bdSMark Fasheh mlog_errno(status); 1161ccd979bdSMark Fasheh 1162ccd979bdSMark Fasheh /* This will kfree the memory pointed to by la_copy and tl_copy */ 1163ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, 1164ccd979bdSMark Fasheh tl_copy); 1165ccd979bdSMark Fasheh 1166ccd979bdSMark Fasheh status = 0; 1167ccd979bdSMark Fasheh done: 1168ccd979bdSMark Fasheh 1169ccd979bdSMark Fasheh mlog_exit(status); 1170ccd979bdSMark Fasheh return status; 1171ccd979bdSMark Fasheh } 1172ccd979bdSMark Fasheh 1173ccd979bdSMark Fasheh /* Test node liveness by trylocking his journal. If we get the lock, 1174ccd979bdSMark Fasheh * we drop it here. Return 0 if we got the lock, -EAGAIN if node is 1175ccd979bdSMark Fasheh * still alive (we couldn't get the lock) and < 0 on error. */ 1176ccd979bdSMark Fasheh static int ocfs2_trylock_journal(struct ocfs2_super *osb, 1177ccd979bdSMark Fasheh int slot_num) 1178ccd979bdSMark Fasheh { 1179ccd979bdSMark Fasheh int status, flags; 1180ccd979bdSMark Fasheh struct inode *inode = NULL; 1181ccd979bdSMark Fasheh 1182ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 1183ccd979bdSMark Fasheh slot_num); 1184ccd979bdSMark Fasheh if (inode == NULL) { 1185ccd979bdSMark Fasheh mlog(ML_ERROR, "access error\n"); 1186ccd979bdSMark Fasheh status = -EACCES; 1187ccd979bdSMark Fasheh goto bail; 1188ccd979bdSMark Fasheh } 1189ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 1190ccd979bdSMark Fasheh mlog(ML_ERROR, "access error (bad inode)\n"); 1191ccd979bdSMark Fasheh iput(inode); 1192ccd979bdSMark Fasheh inode = NULL; 1193ccd979bdSMark Fasheh status = -EACCES; 1194ccd979bdSMark Fasheh goto bail; 1195ccd979bdSMark Fasheh } 1196ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 1197ccd979bdSMark Fasheh 1198ccd979bdSMark Fasheh flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; 11994bcec184SMark Fasheh status = ocfs2_meta_lock_full(inode, NULL, 1, flags); 1200ccd979bdSMark Fasheh if (status < 0) { 1201ccd979bdSMark Fasheh if (status != -EAGAIN) 1202ccd979bdSMark Fasheh mlog_errno(status); 1203ccd979bdSMark Fasheh goto bail; 1204ccd979bdSMark Fasheh } 1205ccd979bdSMark Fasheh 1206ccd979bdSMark Fasheh ocfs2_meta_unlock(inode, 1); 1207ccd979bdSMark Fasheh bail: 1208ccd979bdSMark Fasheh if (inode) 1209ccd979bdSMark Fasheh iput(inode); 1210ccd979bdSMark Fasheh 1211ccd979bdSMark Fasheh return status; 1212ccd979bdSMark Fasheh } 1213ccd979bdSMark Fasheh 1214ccd979bdSMark Fasheh /* Call this underneath ocfs2_super_lock. It also assumes that the 1215ccd979bdSMark Fasheh * slot info struct has been updated from disk. */ 1216ccd979bdSMark Fasheh int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) 1217ccd979bdSMark Fasheh { 1218ccd979bdSMark Fasheh int status, i, node_num; 1219ccd979bdSMark Fasheh struct ocfs2_slot_info *si = osb->slot_info; 1220ccd979bdSMark Fasheh 1221ccd979bdSMark Fasheh /* This is called with the super block cluster lock, so we 1222ccd979bdSMark Fasheh * know that the slot map can't change underneath us. */ 1223ccd979bdSMark Fasheh 1224ccd979bdSMark Fasheh spin_lock(&si->si_lock); 1225ccd979bdSMark Fasheh for(i = 0; i < si->si_num_slots; i++) { 1226ccd979bdSMark Fasheh if (i == osb->slot_num) 1227ccd979bdSMark Fasheh continue; 1228ccd979bdSMark Fasheh if (ocfs2_is_empty_slot(si, i)) 1229ccd979bdSMark Fasheh continue; 1230ccd979bdSMark Fasheh 1231ccd979bdSMark Fasheh node_num = si->si_global_node_nums[i]; 1232ccd979bdSMark Fasheh if (ocfs2_node_map_test_bit(osb, &osb->recovery_map, node_num)) 1233ccd979bdSMark Fasheh continue; 1234ccd979bdSMark Fasheh spin_unlock(&si->si_lock); 1235ccd979bdSMark Fasheh 1236ccd979bdSMark Fasheh /* Ok, we have a slot occupied by another node which 1237ccd979bdSMark Fasheh * is not in the recovery map. We trylock his journal 1238ccd979bdSMark Fasheh * file here to test if he's alive. */ 1239ccd979bdSMark Fasheh status = ocfs2_trylock_journal(osb, i); 1240ccd979bdSMark Fasheh if (!status) { 1241ccd979bdSMark Fasheh /* Since we're called from mount, we know that 1242ccd979bdSMark Fasheh * the recovery thread can't race us on 1243ccd979bdSMark Fasheh * setting / checking the recovery bits. */ 1244ccd979bdSMark Fasheh ocfs2_recovery_thread(osb, node_num); 1245ccd979bdSMark Fasheh } else if ((status < 0) && (status != -EAGAIN)) { 1246ccd979bdSMark Fasheh mlog_errno(status); 1247ccd979bdSMark Fasheh goto bail; 1248ccd979bdSMark Fasheh } 1249ccd979bdSMark Fasheh 1250ccd979bdSMark Fasheh spin_lock(&si->si_lock); 1251ccd979bdSMark Fasheh } 1252ccd979bdSMark Fasheh spin_unlock(&si->si_lock); 1253ccd979bdSMark Fasheh 1254ccd979bdSMark Fasheh status = 0; 1255ccd979bdSMark Fasheh bail: 1256ccd979bdSMark Fasheh mlog_exit(status); 1257ccd979bdSMark Fasheh return status; 1258ccd979bdSMark Fasheh } 1259ccd979bdSMark Fasheh 1260b4df6ed8SMark Fasheh static int ocfs2_queue_orphans(struct ocfs2_super *osb, 1261b4df6ed8SMark Fasheh int slot, 1262b4df6ed8SMark Fasheh struct inode **head) 1263ccd979bdSMark Fasheh { 1264b4df6ed8SMark Fasheh int status; 1265ccd979bdSMark Fasheh struct inode *orphan_dir_inode = NULL; 1266b4df6ed8SMark Fasheh struct inode *iter; 1267ccd979bdSMark Fasheh unsigned long offset, blk, local; 1268ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 1269ccd979bdSMark Fasheh struct ocfs2_dir_entry *de; 1270ccd979bdSMark Fasheh struct super_block *sb = osb->sb; 1271ccd979bdSMark Fasheh 1272ccd979bdSMark Fasheh orphan_dir_inode = ocfs2_get_system_file_inode(osb, 1273ccd979bdSMark Fasheh ORPHAN_DIR_SYSTEM_INODE, 1274ccd979bdSMark Fasheh slot); 1275ccd979bdSMark Fasheh if (!orphan_dir_inode) { 1276ccd979bdSMark Fasheh status = -ENOENT; 1277ccd979bdSMark Fasheh mlog_errno(status); 1278b4df6ed8SMark Fasheh return status; 1279ccd979bdSMark Fasheh } 1280ccd979bdSMark Fasheh 12811b1dcc1bSJes Sorensen mutex_lock(&orphan_dir_inode->i_mutex); 12824bcec184SMark Fasheh status = ocfs2_meta_lock(orphan_dir_inode, NULL, 0); 1283ccd979bdSMark Fasheh if (status < 0) { 1284ccd979bdSMark Fasheh mlog_errno(status); 1285ccd979bdSMark Fasheh goto out; 1286ccd979bdSMark Fasheh } 1287ccd979bdSMark Fasheh 1288ccd979bdSMark Fasheh offset = 0; 1289ccd979bdSMark Fasheh iter = NULL; 1290ccd979bdSMark Fasheh while(offset < i_size_read(orphan_dir_inode)) { 1291ccd979bdSMark Fasheh blk = offset >> sb->s_blocksize_bits; 1292ccd979bdSMark Fasheh 1293ccd979bdSMark Fasheh bh = ocfs2_bread(orphan_dir_inode, blk, &status, 0); 1294ccd979bdSMark Fasheh if (!bh) 1295ccd979bdSMark Fasheh status = -EINVAL; 1296ccd979bdSMark Fasheh if (status < 0) { 1297ccd979bdSMark Fasheh if (bh) 1298ccd979bdSMark Fasheh brelse(bh); 1299ccd979bdSMark Fasheh mlog_errno(status); 1300b4df6ed8SMark Fasheh goto out_unlock; 1301ccd979bdSMark Fasheh } 1302ccd979bdSMark Fasheh 1303ccd979bdSMark Fasheh local = 0; 1304ccd979bdSMark Fasheh while(offset < i_size_read(orphan_dir_inode) 1305ccd979bdSMark Fasheh && local < sb->s_blocksize) { 1306ccd979bdSMark Fasheh de = (struct ocfs2_dir_entry *) (bh->b_data + local); 1307ccd979bdSMark Fasheh 1308ccd979bdSMark Fasheh if (!ocfs2_check_dir_entry(orphan_dir_inode, 1309ccd979bdSMark Fasheh de, bh, local)) { 1310ccd979bdSMark Fasheh status = -EINVAL; 1311ccd979bdSMark Fasheh mlog_errno(status); 1312ccd979bdSMark Fasheh brelse(bh); 1313b4df6ed8SMark Fasheh goto out_unlock; 1314ccd979bdSMark Fasheh } 1315ccd979bdSMark Fasheh 1316ccd979bdSMark Fasheh local += le16_to_cpu(de->rec_len); 1317ccd979bdSMark Fasheh offset += le16_to_cpu(de->rec_len); 1318ccd979bdSMark Fasheh 1319ccd979bdSMark Fasheh /* I guess we silently fail on no inode? */ 1320ccd979bdSMark Fasheh if (!le64_to_cpu(de->inode)) 1321ccd979bdSMark Fasheh continue; 1322ccd979bdSMark Fasheh if (de->file_type > OCFS2_FT_MAX) { 1323ccd979bdSMark Fasheh mlog(ML_ERROR, 1324ccd979bdSMark Fasheh "block %llu contains invalid de: " 1325b0697053SMark Fasheh "inode = %llu, rec_len = %u, " 1326ccd979bdSMark Fasheh "name_len = %u, file_type = %u, " 1327ccd979bdSMark Fasheh "name='%.*s'\n", 1328ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr, 1329b0697053SMark Fasheh (unsigned long long)le64_to_cpu(de->inode), 1330ccd979bdSMark Fasheh le16_to_cpu(de->rec_len), 1331ccd979bdSMark Fasheh de->name_len, 1332ccd979bdSMark Fasheh de->file_type, 1333ccd979bdSMark Fasheh de->name_len, 1334ccd979bdSMark Fasheh de->name); 1335ccd979bdSMark Fasheh continue; 1336ccd979bdSMark Fasheh } 1337ccd979bdSMark Fasheh if (de->name_len == 1 && !strncmp(".", de->name, 1)) 1338ccd979bdSMark Fasheh continue; 1339ccd979bdSMark Fasheh if (de->name_len == 2 && !strncmp("..", de->name, 2)) 1340ccd979bdSMark Fasheh continue; 1341ccd979bdSMark Fasheh 134224c19ef4SMark Fasheh iter = ocfs2_iget(osb, le64_to_cpu(de->inode), 134324c19ef4SMark Fasheh OCFS2_FI_FLAG_NOLOCK); 1344ccd979bdSMark Fasheh if (IS_ERR(iter)) 1345ccd979bdSMark Fasheh continue; 1346ccd979bdSMark Fasheh 1347b0697053SMark Fasheh mlog(0, "queue orphan %llu\n", 1348b0697053SMark Fasheh (unsigned long long)OCFS2_I(iter)->ip_blkno); 1349b4df6ed8SMark Fasheh /* No locking is required for the next_orphan 1350b4df6ed8SMark Fasheh * queue as there is only ever a single 1351b4df6ed8SMark Fasheh * process doing orphan recovery. */ 1352b4df6ed8SMark Fasheh OCFS2_I(iter)->ip_next_orphan = *head; 1353b4df6ed8SMark Fasheh *head = iter; 1354ccd979bdSMark Fasheh } 1355ccd979bdSMark Fasheh brelse(bh); 1356ccd979bdSMark Fasheh } 1357ccd979bdSMark Fasheh 1358b4df6ed8SMark Fasheh out_unlock: 1359ccd979bdSMark Fasheh ocfs2_meta_unlock(orphan_dir_inode, 0); 1360b4df6ed8SMark Fasheh out: 1361b4df6ed8SMark Fasheh mutex_unlock(&orphan_dir_inode->i_mutex); 1362ccd979bdSMark Fasheh iput(orphan_dir_inode); 1363b4df6ed8SMark Fasheh return status; 1364b4df6ed8SMark Fasheh } 1365b4df6ed8SMark Fasheh 1366b4df6ed8SMark Fasheh static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, 1367b4df6ed8SMark Fasheh int slot) 1368b4df6ed8SMark Fasheh { 1369b4df6ed8SMark Fasheh int ret; 1370b4df6ed8SMark Fasheh 1371b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 1372b4df6ed8SMark Fasheh ret = !osb->osb_orphan_wipes[slot]; 1373b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 1374b4df6ed8SMark Fasheh return ret; 1375b4df6ed8SMark Fasheh } 1376b4df6ed8SMark Fasheh 1377b4df6ed8SMark Fasheh static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, 1378b4df6ed8SMark Fasheh int slot) 1379b4df6ed8SMark Fasheh { 1380b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 1381b4df6ed8SMark Fasheh /* Mark ourselves such that new processes in delete_inode() 1382b4df6ed8SMark Fasheh * know to quit early. */ 1383b4df6ed8SMark Fasheh ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); 1384b4df6ed8SMark Fasheh while (osb->osb_orphan_wipes[slot]) { 1385b4df6ed8SMark Fasheh /* If any processes are already in the middle of an 1386b4df6ed8SMark Fasheh * orphan wipe on this dir, then we need to wait for 1387b4df6ed8SMark Fasheh * them. */ 1388b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 1389b4df6ed8SMark Fasheh wait_event_interruptible(osb->osb_wipe_event, 1390b4df6ed8SMark Fasheh ocfs2_orphan_recovery_can_continue(osb, slot)); 1391b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 1392b4df6ed8SMark Fasheh } 1393b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 1394b4df6ed8SMark Fasheh } 1395b4df6ed8SMark Fasheh 1396b4df6ed8SMark Fasheh static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, 1397b4df6ed8SMark Fasheh int slot) 1398b4df6ed8SMark Fasheh { 1399b4df6ed8SMark Fasheh ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); 1400b4df6ed8SMark Fasheh } 1401b4df6ed8SMark Fasheh 1402b4df6ed8SMark Fasheh /* 1403b4df6ed8SMark Fasheh * Orphan recovery. Each mounted node has it's own orphan dir which we 1404b4df6ed8SMark Fasheh * must run during recovery. Our strategy here is to build a list of 1405b4df6ed8SMark Fasheh * the inodes in the orphan dir and iget/iput them. The VFS does 1406b4df6ed8SMark Fasheh * (most) of the rest of the work. 1407b4df6ed8SMark Fasheh * 1408b4df6ed8SMark Fasheh * Orphan recovery can happen at any time, not just mount so we have a 1409b4df6ed8SMark Fasheh * couple of extra considerations. 1410b4df6ed8SMark Fasheh * 1411b4df6ed8SMark Fasheh * - We grab as many inodes as we can under the orphan dir lock - 1412b4df6ed8SMark Fasheh * doing iget() outside the orphan dir risks getting a reference on 1413b4df6ed8SMark Fasheh * an invalid inode. 1414b4df6ed8SMark Fasheh * - We must be sure not to deadlock with other processes on the 1415b4df6ed8SMark Fasheh * system wanting to run delete_inode(). This can happen when they go 1416b4df6ed8SMark Fasheh * to lock the orphan dir and the orphan recovery process attempts to 1417b4df6ed8SMark Fasheh * iget() inside the orphan dir lock. This can be avoided by 1418b4df6ed8SMark Fasheh * advertising our state to ocfs2_delete_inode(). 1419b4df6ed8SMark Fasheh */ 1420b4df6ed8SMark Fasheh static int ocfs2_recover_orphans(struct ocfs2_super *osb, 1421b4df6ed8SMark Fasheh int slot) 1422b4df6ed8SMark Fasheh { 1423b4df6ed8SMark Fasheh int ret = 0; 1424b4df6ed8SMark Fasheh struct inode *inode = NULL; 1425b4df6ed8SMark Fasheh struct inode *iter; 1426b4df6ed8SMark Fasheh struct ocfs2_inode_info *oi; 1427b4df6ed8SMark Fasheh 1428b4df6ed8SMark Fasheh mlog(0, "Recover inodes from orphan dir in slot %d\n", slot); 1429b4df6ed8SMark Fasheh 1430b4df6ed8SMark Fasheh ocfs2_mark_recovering_orphan_dir(osb, slot); 1431b4df6ed8SMark Fasheh ret = ocfs2_queue_orphans(osb, slot, &inode); 1432b4df6ed8SMark Fasheh ocfs2_clear_recovering_orphan_dir(osb, slot); 1433b4df6ed8SMark Fasheh 1434b4df6ed8SMark Fasheh /* Error here should be noted, but we want to continue with as 1435b4df6ed8SMark Fasheh * many queued inodes as we've got. */ 1436b4df6ed8SMark Fasheh if (ret) 1437b4df6ed8SMark Fasheh mlog_errno(ret); 1438ccd979bdSMark Fasheh 1439ccd979bdSMark Fasheh while (inode) { 1440ccd979bdSMark Fasheh oi = OCFS2_I(inode); 1441b0697053SMark Fasheh mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno); 1442ccd979bdSMark Fasheh 1443ccd979bdSMark Fasheh iter = oi->ip_next_orphan; 1444ccd979bdSMark Fasheh 1445ccd979bdSMark Fasheh spin_lock(&oi->ip_lock); 1446ccd979bdSMark Fasheh /* Delete voting may have set these on the assumption 1447ccd979bdSMark Fasheh * that the other node would wipe them successfully. 1448ccd979bdSMark Fasheh * If they are still in the node's orphan dir, we need 1449ccd979bdSMark Fasheh * to reset that state. */ 1450ccd979bdSMark Fasheh oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); 1451ccd979bdSMark Fasheh 1452ccd979bdSMark Fasheh /* Set the proper information to get us going into 1453ccd979bdSMark Fasheh * ocfs2_delete_inode. */ 1454ccd979bdSMark Fasheh oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; 1455ccd979bdSMark Fasheh oi->ip_orphaned_slot = slot; 1456ccd979bdSMark Fasheh spin_unlock(&oi->ip_lock); 1457ccd979bdSMark Fasheh 1458ccd979bdSMark Fasheh iput(inode); 1459ccd979bdSMark Fasheh 1460ccd979bdSMark Fasheh inode = iter; 1461ccd979bdSMark Fasheh } 1462ccd979bdSMark Fasheh 1463b4df6ed8SMark Fasheh return ret; 1464ccd979bdSMark Fasheh } 1465ccd979bdSMark Fasheh 1466ccd979bdSMark Fasheh static int ocfs2_wait_on_mount(struct ocfs2_super *osb) 1467ccd979bdSMark Fasheh { 1468ccd979bdSMark Fasheh /* This check is good because ocfs2 will wait on our recovery 1469ccd979bdSMark Fasheh * thread before changing it to something other than MOUNTED 1470ccd979bdSMark Fasheh * or DISABLED. */ 1471ccd979bdSMark Fasheh wait_event(osb->osb_mount_event, 1472ccd979bdSMark Fasheh atomic_read(&osb->vol_state) == VOLUME_MOUNTED || 1473ccd979bdSMark Fasheh atomic_read(&osb->vol_state) == VOLUME_DISABLED); 1474ccd979bdSMark Fasheh 1475ccd979bdSMark Fasheh /* If there's an error on mount, then we may never get to the 1476ccd979bdSMark Fasheh * MOUNTED flag, but this is set right before 1477ccd979bdSMark Fasheh * dismount_volume() so we can trust it. */ 1478ccd979bdSMark Fasheh if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { 1479ccd979bdSMark Fasheh mlog(0, "mount error, exiting!\n"); 1480ccd979bdSMark Fasheh return -EBUSY; 1481ccd979bdSMark Fasheh } 1482ccd979bdSMark Fasheh 1483ccd979bdSMark Fasheh return 0; 1484ccd979bdSMark Fasheh } 1485ccd979bdSMark Fasheh 1486ccd979bdSMark Fasheh static int ocfs2_commit_thread(void *arg) 1487ccd979bdSMark Fasheh { 1488ccd979bdSMark Fasheh int status; 1489ccd979bdSMark Fasheh struct ocfs2_super *osb = arg; 1490ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 1491ccd979bdSMark Fasheh 1492ccd979bdSMark Fasheh /* we can trust j_num_trans here because _should_stop() is only set in 1493ccd979bdSMark Fasheh * shutdown and nobody other than ourselves should be able to start 1494ccd979bdSMark Fasheh * transactions. committing on shutdown might take a few iterations 1495ccd979bdSMark Fasheh * as final transactions put deleted inodes on the list */ 1496ccd979bdSMark Fasheh while (!(kthread_should_stop() && 1497ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans) == 0)) { 1498ccd979bdSMark Fasheh 1499745ae8baSMark Fasheh wait_event_interruptible(osb->checkpoint_event, 1500ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans) 1501745ae8baSMark Fasheh || kthread_should_stop()); 1502ccd979bdSMark Fasheh 1503ccd979bdSMark Fasheh status = ocfs2_commit_cache(osb); 1504ccd979bdSMark Fasheh if (status < 0) 1505ccd979bdSMark Fasheh mlog_errno(status); 1506ccd979bdSMark Fasheh 1507ccd979bdSMark Fasheh if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ 1508ccd979bdSMark Fasheh mlog(ML_KTHREAD, 1509ccd979bdSMark Fasheh "commit_thread: %u transactions pending on " 1510ccd979bdSMark Fasheh "shutdown\n", 1511ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans)); 1512ccd979bdSMark Fasheh } 1513ccd979bdSMark Fasheh } 1514ccd979bdSMark Fasheh 1515ccd979bdSMark Fasheh return 0; 1516ccd979bdSMark Fasheh } 1517ccd979bdSMark Fasheh 1518ccd979bdSMark Fasheh /* Look for a dirty journal without taking any cluster locks. Used for 1519ccd979bdSMark Fasheh * hard readonly access to determine whether the file system journals 1520ccd979bdSMark Fasheh * require recovery. */ 1521ccd979bdSMark Fasheh int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) 1522ccd979bdSMark Fasheh { 1523ccd979bdSMark Fasheh int ret = 0; 1524ccd979bdSMark Fasheh unsigned int slot; 1525ccd979bdSMark Fasheh struct buffer_head *di_bh; 1526ccd979bdSMark Fasheh struct ocfs2_dinode *di; 1527ccd979bdSMark Fasheh struct inode *journal = NULL; 1528ccd979bdSMark Fasheh 1529ccd979bdSMark Fasheh for(slot = 0; slot < osb->max_slots; slot++) { 1530ccd979bdSMark Fasheh journal = ocfs2_get_system_file_inode(osb, 1531ccd979bdSMark Fasheh JOURNAL_SYSTEM_INODE, 1532ccd979bdSMark Fasheh slot); 1533ccd979bdSMark Fasheh if (!journal || is_bad_inode(journal)) { 1534ccd979bdSMark Fasheh ret = -EACCES; 1535ccd979bdSMark Fasheh mlog_errno(ret); 1536ccd979bdSMark Fasheh goto out; 1537ccd979bdSMark Fasheh } 1538ccd979bdSMark Fasheh 1539ccd979bdSMark Fasheh di_bh = NULL; 1540ccd979bdSMark Fasheh ret = ocfs2_read_block(osb, OCFS2_I(journal)->ip_blkno, &di_bh, 1541ccd979bdSMark Fasheh 0, journal); 1542ccd979bdSMark Fasheh if (ret < 0) { 1543ccd979bdSMark Fasheh mlog_errno(ret); 1544ccd979bdSMark Fasheh goto out; 1545ccd979bdSMark Fasheh } 1546ccd979bdSMark Fasheh 1547ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) di_bh->b_data; 1548ccd979bdSMark Fasheh 1549ccd979bdSMark Fasheh if (le32_to_cpu(di->id1.journal1.ij_flags) & 1550ccd979bdSMark Fasheh OCFS2_JOURNAL_DIRTY_FL) 1551ccd979bdSMark Fasheh ret = -EROFS; 1552ccd979bdSMark Fasheh 1553ccd979bdSMark Fasheh brelse(di_bh); 1554ccd979bdSMark Fasheh if (ret) 1555ccd979bdSMark Fasheh break; 1556ccd979bdSMark Fasheh } 1557ccd979bdSMark Fasheh 1558ccd979bdSMark Fasheh out: 1559ccd979bdSMark Fasheh if (journal) 1560ccd979bdSMark Fasheh iput(journal); 1561ccd979bdSMark Fasheh 1562ccd979bdSMark Fasheh return ret; 1563ccd979bdSMark Fasheh } 1564