From fd67d8a07208ab06560287b7b9334c2d50b7d6d7 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 10 Aug 2021 17:59:02 -0700 Subject: [PATCH] xfs: move recovery needed state updates to xfs_log_mount_finish xfs_log_mount_finish() needs to know if recovery is needed or not to make decisions on whether to flush the log and AIL. Move the handling of the NEED_RECOVERY state out to this function rather than needing a temporary variable to store this state over the call to xlog_recover_finish(). Signed-off-by: Dave Chinner Reviewed-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_log.c | 24 ++++++--- fs/xfs/xfs_log_recover.c | 104 ++++++++++++++++----------------------- 2 files changed, 58 insertions(+), 70 deletions(-) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 08fef1e998ea..8edfd35317d1 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -726,9 +726,9 @@ int xfs_log_mount_finish( struct xfs_mount *mp) { - int error = 0; - bool readonly = (mp->m_flags & XFS_MOUNT_RDONLY); - bool recovered = mp->m_log->l_flags & XLOG_RECOVERY_NEEDED; + struct xlog *log = mp->m_log; + bool readonly = (mp->m_flags & XFS_MOUNT_RDONLY); + int error = 0; if (mp->m_flags & XFS_MOUNT_NORECOVERY) { ASSERT(mp->m_flags & XFS_MOUNT_RDONLY); @@ -759,7 +759,8 @@ xfs_log_mount_finish( * mount failure occurs. */ mp->m_super->s_flags |= SB_ACTIVE; - error = xlog_recover_finish(mp->m_log); + if (log->l_flags & XLOG_RECOVERY_NEEDED) + error = xlog_recover_finish(log); if (!error) xfs_log_work_queue(mp); mp->m_super->s_flags &= ~SB_ACTIVE; @@ -774,17 +775,24 @@ xfs_log_mount_finish( * Don't push in the error case because the AIL may have pending intents * that aren't removed until recovery is cancelled. */ - if (!error && recovered) { - xfs_log_force(mp, XFS_LOG_SYNC); - xfs_ail_push_all_sync(mp->m_ail); + if (log->l_flags & XLOG_RECOVERY_NEEDED) { + if (!error) { + xfs_log_force(mp, XFS_LOG_SYNC); + xfs_ail_push_all_sync(mp->m_ail); + } + xfs_notice(mp, "Ending recovery (logdev: %s)", + mp->m_logname ? mp->m_logname : "internal"); + } else { + xfs_info(mp, "Ending clean mount"); } xfs_buftarg_drain(mp->m_ddev_targp); + log->l_flags &= ~XLOG_RECOVERY_NEEDED; if (readonly) mp->m_flags |= XFS_MOUNT_RDONLY; /* Make sure the log is dead if we're returning failure. */ - ASSERT(!error || (mp->m_log->l_flags & XLOG_IO_ERROR)); + ASSERT(!error || xlog_is_shutdown(log)); return error; } diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index e6589cf4d09f..53006e923a8c 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -3449,78 +3449,58 @@ xlog_recover( } /* - * In the first part of recovery we replay inodes and buffers and build - * up the list of extent free items which need to be processed. Here - * we process the extent free items and clean up the on disk unlinked - * inode lists. This is separated from the first part of recovery so - * that the root and real-time bitmap inodes can be read in from disk in - * between the two stages. This is necessary so that we can free space - * in the real-time portion of the file system. + * In the first part of recovery we replay inodes and buffers and build up the + * list of intents which need to be processed. Here we process the intents and + * clean up the on disk unlinked inode lists. This is separated from the first + * part of recovery so that the root and real-time bitmap inodes can be read in + * from disk in between the two stages. This is necessary so that we can free + * space in the real-time portion of the file system. */ int xlog_recover_finish( struct xlog *log) { + int error; + + error = xlog_recover_process_intents(log); + if (error) { + /* + * Cancel all the unprocessed intent items now so that we don't + * leave them pinned in the AIL. This can cause the AIL to + * livelock on the pinned item if anyone tries to push the AIL + * (inode reclaim does this) before we get around to + * xfs_log_mount_cancel. + */ + xlog_recover_cancel_intents(log); + xfs_alert(log->l_mp, "Failed to recover intents"); + xfs_force_shutdown(log->l_mp, SHUTDOWN_LOG_IO_ERROR); + return error; + } + /* - * Now we're ready to do the transactions needed for the - * rest of recovery. Start with completing all the extent - * free intent records and then process the unlinked inode - * lists. At this point, we essentially run in normal mode - * except that we're still performing recovery actions - * rather than accepting new requests. + * Sync the log to get all the intents out of the AIL. This isn't + * absolutely necessary, but it helps in case the unlink transactions + * would have problems pushing the intents out of the way. */ - if (log->l_flags & XLOG_RECOVERY_NEEDED) { - int error; - error = xlog_recover_process_intents(log); - if (error) { - /* - * Cancel all the unprocessed intent items now so that - * we don't leave them pinned in the AIL. This can - * cause the AIL to livelock on the pinned item if - * anyone tries to push the AIL (inode reclaim does - * this) before we get around to xfs_log_mount_cancel. - */ - xlog_recover_cancel_intents(log); - xfs_force_shutdown(log->l_mp, SHUTDOWN_LOG_IO_ERROR); - xfs_alert(log->l_mp, "Failed to recover intents"); + xfs_log_force(log->l_mp, XFS_LOG_SYNC); + + /* + * Now that we've recovered the log and all the intents, we can clear + * the log incompat feature bits in the superblock because there's no + * longer anything to protect. We rely on the AIL push to write out the + * updated superblock after everything else. + */ + if (xfs_clear_incompat_log_features(log->l_mp)) { + error = xfs_sync_sb(log->l_mp, false); + if (error < 0) { + xfs_alert(log->l_mp, + "Failed to clear log incompat features on recovery"); return error; } - - /* - * Sync the log to get all the intents out of the AIL. - * This isn't absolutely necessary, but it helps in - * case the unlink transactions would have problems - * pushing the intents out of the way. - */ - xfs_log_force(log->l_mp, XFS_LOG_SYNC); - - /* - * Now that we've recovered the log and all the intents, we can - * clear the log incompat feature bits in the superblock - * because there's no longer anything to protect. We rely on - * the AIL push to write out the updated superblock after - * everything else. - */ - if (xfs_clear_incompat_log_features(log->l_mp)) { - error = xfs_sync_sb(log->l_mp, false); - if (error < 0) { - xfs_alert(log->l_mp, - "Failed to clear log incompat features on recovery"); - return error; - } - } - - xlog_recover_process_iunlinks(log); - - xlog_recover_check_summary(log); - - xfs_notice(log->l_mp, "Ending recovery (logdev: %s)", - log->l_mp->m_logname ? log->l_mp->m_logname - : "internal"); - log->l_flags &= ~XLOG_RECOVERY_NEEDED; - } else { - xfs_info(log->l_mp, "Ending clean mount"); } + + xlog_recover_process_iunlinks(log); + xlog_recover_check_summary(log); return 0; }