389 lines
9.2 KiB
C
389 lines
9.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_sb.h"
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#include "xfs_mount.h"
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#include "xfs_inode.h"
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#include "xfs_trace.h"
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#include "xfs_health.h"
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/*
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* Warn about metadata corruption that we detected but haven't fixed, and
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* make sure we're not sitting on anything that would get in the way of
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* recovery.
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*/
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void
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xfs_health_unmount(
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struct xfs_mount *mp)
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{
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struct xfs_perag *pag;
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xfs_agnumber_t agno;
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unsigned int sick = 0;
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unsigned int checked = 0;
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bool warn = false;
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if (XFS_FORCED_SHUTDOWN(mp))
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return;
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/* Measure AG corruption levels. */
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for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
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pag = xfs_perag_get(mp, agno);
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xfs_ag_measure_sickness(pag, &sick, &checked);
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if (sick) {
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trace_xfs_ag_unfixed_corruption(mp, agno, sick);
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warn = true;
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}
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xfs_perag_put(pag);
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}
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/* Measure realtime volume corruption levels. */
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xfs_rt_measure_sickness(mp, &sick, &checked);
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if (sick) {
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trace_xfs_rt_unfixed_corruption(mp, sick);
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warn = true;
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}
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/*
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* Measure fs corruption and keep the sample around for the warning.
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* See the note below for why we exempt FS_COUNTERS.
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*/
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xfs_fs_measure_sickness(mp, &sick, &checked);
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if (sick & ~XFS_SICK_FS_COUNTERS) {
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trace_xfs_fs_unfixed_corruption(mp, sick);
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warn = true;
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}
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if (warn) {
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xfs_warn(mp,
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"Uncorrected metadata errors detected; please run xfs_repair.");
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/*
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* We discovered uncorrected metadata problems at some point
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* during this filesystem mount and have advised the
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* administrator to run repair once the unmount completes.
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*
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* However, we must be careful -- when FSCOUNTERS are flagged
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* unhealthy, the unmount procedure omits writing the clean
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* unmount record to the log so that the next mount will run
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* recovery and recompute the summary counters. In other
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* words, we leave a dirty log to get the counters fixed.
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*
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* Unfortunately, xfs_repair cannot recover dirty logs, so if
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* there were filesystem problems, FSCOUNTERS was flagged, and
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* the administrator takes our advice to run xfs_repair,
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* they'll have to zap the log before repairing structures.
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* We don't really want to encourage this, so we mark the
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* FSCOUNTERS healthy so that a subsequent repair run won't see
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* a dirty log.
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*/
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if (sick & XFS_SICK_FS_COUNTERS)
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xfs_fs_mark_healthy(mp, XFS_SICK_FS_COUNTERS);
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}
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}
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/* Mark unhealthy per-fs metadata. */
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void
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xfs_fs_mark_sick(
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struct xfs_mount *mp,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_FS_PRIMARY));
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trace_xfs_fs_mark_sick(mp, mask);
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spin_lock(&mp->m_sb_lock);
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mp->m_fs_sick |= mask;
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mp->m_fs_checked |= mask;
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spin_unlock(&mp->m_sb_lock);
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}
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/* Mark a per-fs metadata healed. */
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void
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xfs_fs_mark_healthy(
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struct xfs_mount *mp,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_FS_PRIMARY));
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trace_xfs_fs_mark_healthy(mp, mask);
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spin_lock(&mp->m_sb_lock);
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mp->m_fs_sick &= ~mask;
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mp->m_fs_checked |= mask;
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spin_unlock(&mp->m_sb_lock);
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}
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/* Sample which per-fs metadata are unhealthy. */
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void
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xfs_fs_measure_sickness(
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struct xfs_mount *mp,
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unsigned int *sick,
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unsigned int *checked)
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{
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spin_lock(&mp->m_sb_lock);
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*sick = mp->m_fs_sick;
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*checked = mp->m_fs_checked;
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spin_unlock(&mp->m_sb_lock);
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}
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/* Mark unhealthy realtime metadata. */
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void
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xfs_rt_mark_sick(
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struct xfs_mount *mp,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_RT_PRIMARY));
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trace_xfs_rt_mark_sick(mp, mask);
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spin_lock(&mp->m_sb_lock);
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mp->m_rt_sick |= mask;
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mp->m_rt_checked |= mask;
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spin_unlock(&mp->m_sb_lock);
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}
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/* Mark a realtime metadata healed. */
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void
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xfs_rt_mark_healthy(
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struct xfs_mount *mp,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_RT_PRIMARY));
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trace_xfs_rt_mark_healthy(mp, mask);
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spin_lock(&mp->m_sb_lock);
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mp->m_rt_sick &= ~mask;
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mp->m_rt_checked |= mask;
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spin_unlock(&mp->m_sb_lock);
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}
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/* Sample which realtime metadata are unhealthy. */
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void
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xfs_rt_measure_sickness(
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struct xfs_mount *mp,
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unsigned int *sick,
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unsigned int *checked)
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{
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spin_lock(&mp->m_sb_lock);
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*sick = mp->m_rt_sick;
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*checked = mp->m_rt_checked;
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spin_unlock(&mp->m_sb_lock);
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}
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/* Mark unhealthy per-ag metadata. */
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void
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xfs_ag_mark_sick(
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struct xfs_perag *pag,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_AG_PRIMARY));
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trace_xfs_ag_mark_sick(pag->pag_mount, pag->pag_agno, mask);
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spin_lock(&pag->pag_state_lock);
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pag->pag_sick |= mask;
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pag->pag_checked |= mask;
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spin_unlock(&pag->pag_state_lock);
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}
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/* Mark per-ag metadata ok. */
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void
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xfs_ag_mark_healthy(
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struct xfs_perag *pag,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_AG_PRIMARY));
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trace_xfs_ag_mark_healthy(pag->pag_mount, pag->pag_agno, mask);
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spin_lock(&pag->pag_state_lock);
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pag->pag_sick &= ~mask;
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pag->pag_checked |= mask;
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spin_unlock(&pag->pag_state_lock);
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}
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/* Sample which per-ag metadata are unhealthy. */
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void
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xfs_ag_measure_sickness(
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struct xfs_perag *pag,
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unsigned int *sick,
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unsigned int *checked)
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{
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spin_lock(&pag->pag_state_lock);
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*sick = pag->pag_sick;
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*checked = pag->pag_checked;
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spin_unlock(&pag->pag_state_lock);
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}
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/* Mark the unhealthy parts of an inode. */
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void
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xfs_inode_mark_sick(
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struct xfs_inode *ip,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_INO_PRIMARY));
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trace_xfs_inode_mark_sick(ip, mask);
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spin_lock(&ip->i_flags_lock);
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ip->i_sick |= mask;
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ip->i_checked |= mask;
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spin_unlock(&ip->i_flags_lock);
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}
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/* Mark parts of an inode healed. */
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void
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xfs_inode_mark_healthy(
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struct xfs_inode *ip,
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unsigned int mask)
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{
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ASSERT(!(mask & ~XFS_SICK_INO_PRIMARY));
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trace_xfs_inode_mark_healthy(ip, mask);
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spin_lock(&ip->i_flags_lock);
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ip->i_sick &= ~mask;
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ip->i_checked |= mask;
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spin_unlock(&ip->i_flags_lock);
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}
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/* Sample which parts of an inode are unhealthy. */
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void
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xfs_inode_measure_sickness(
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struct xfs_inode *ip,
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unsigned int *sick,
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unsigned int *checked)
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{
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spin_lock(&ip->i_flags_lock);
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*sick = ip->i_sick;
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*checked = ip->i_checked;
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spin_unlock(&ip->i_flags_lock);
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}
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/* Mappings between internal sick masks and ioctl sick masks. */
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struct ioctl_sick_map {
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unsigned int sick_mask;
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unsigned int ioctl_mask;
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};
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static const struct ioctl_sick_map fs_map[] = {
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{ XFS_SICK_FS_COUNTERS, XFS_FSOP_GEOM_SICK_COUNTERS},
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{ XFS_SICK_FS_UQUOTA, XFS_FSOP_GEOM_SICK_UQUOTA },
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{ XFS_SICK_FS_GQUOTA, XFS_FSOP_GEOM_SICK_GQUOTA },
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{ XFS_SICK_FS_PQUOTA, XFS_FSOP_GEOM_SICK_PQUOTA },
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{ 0, 0 },
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};
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static const struct ioctl_sick_map rt_map[] = {
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{ XFS_SICK_RT_BITMAP, XFS_FSOP_GEOM_SICK_RT_BITMAP },
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{ XFS_SICK_RT_SUMMARY, XFS_FSOP_GEOM_SICK_RT_SUMMARY },
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{ 0, 0 },
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};
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static inline void
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xfgeo_health_tick(
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struct xfs_fsop_geom *geo,
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unsigned int sick,
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unsigned int checked,
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const struct ioctl_sick_map *m)
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{
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if (checked & m->sick_mask)
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geo->checked |= m->ioctl_mask;
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if (sick & m->sick_mask)
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geo->sick |= m->ioctl_mask;
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}
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/* Fill out fs geometry health info. */
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void
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xfs_fsop_geom_health(
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struct xfs_mount *mp,
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struct xfs_fsop_geom *geo)
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{
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const struct ioctl_sick_map *m;
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unsigned int sick;
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unsigned int checked;
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geo->sick = 0;
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geo->checked = 0;
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xfs_fs_measure_sickness(mp, &sick, &checked);
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for (m = fs_map; m->sick_mask; m++)
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xfgeo_health_tick(geo, sick, checked, m);
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xfs_rt_measure_sickness(mp, &sick, &checked);
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for (m = rt_map; m->sick_mask; m++)
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xfgeo_health_tick(geo, sick, checked, m);
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}
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static const struct ioctl_sick_map ag_map[] = {
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{ XFS_SICK_AG_SB, XFS_AG_GEOM_SICK_SB },
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{ XFS_SICK_AG_AGF, XFS_AG_GEOM_SICK_AGF },
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{ XFS_SICK_AG_AGFL, XFS_AG_GEOM_SICK_AGFL },
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{ XFS_SICK_AG_AGI, XFS_AG_GEOM_SICK_AGI },
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{ XFS_SICK_AG_BNOBT, XFS_AG_GEOM_SICK_BNOBT },
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{ XFS_SICK_AG_CNTBT, XFS_AG_GEOM_SICK_CNTBT },
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{ XFS_SICK_AG_INOBT, XFS_AG_GEOM_SICK_INOBT },
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{ XFS_SICK_AG_FINOBT, XFS_AG_GEOM_SICK_FINOBT },
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{ XFS_SICK_AG_RMAPBT, XFS_AG_GEOM_SICK_RMAPBT },
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{ XFS_SICK_AG_REFCNTBT, XFS_AG_GEOM_SICK_REFCNTBT },
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{ 0, 0 },
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};
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/* Fill out ag geometry health info. */
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void
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xfs_ag_geom_health(
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struct xfs_perag *pag,
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struct xfs_ag_geometry *ageo)
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{
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const struct ioctl_sick_map *m;
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unsigned int sick;
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unsigned int checked;
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ageo->ag_sick = 0;
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ageo->ag_checked = 0;
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xfs_ag_measure_sickness(pag, &sick, &checked);
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for (m = ag_map; m->sick_mask; m++) {
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if (checked & m->sick_mask)
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ageo->ag_checked |= m->ioctl_mask;
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if (sick & m->sick_mask)
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ageo->ag_sick |= m->ioctl_mask;
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}
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}
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static const struct ioctl_sick_map ino_map[] = {
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{ XFS_SICK_INO_CORE, XFS_BS_SICK_INODE },
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{ XFS_SICK_INO_BMBTD, XFS_BS_SICK_BMBTD },
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{ XFS_SICK_INO_BMBTA, XFS_BS_SICK_BMBTA },
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{ XFS_SICK_INO_BMBTC, XFS_BS_SICK_BMBTC },
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{ XFS_SICK_INO_DIR, XFS_BS_SICK_DIR },
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{ XFS_SICK_INO_XATTR, XFS_BS_SICK_XATTR },
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{ XFS_SICK_INO_SYMLINK, XFS_BS_SICK_SYMLINK },
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{ XFS_SICK_INO_PARENT, XFS_BS_SICK_PARENT },
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{ 0, 0 },
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};
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/* Fill out bulkstat health info. */
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void
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xfs_bulkstat_health(
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struct xfs_inode *ip,
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struct xfs_bulkstat *bs)
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{
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const struct ioctl_sick_map *m;
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unsigned int sick;
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unsigned int checked;
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bs->bs_sick = 0;
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bs->bs_checked = 0;
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xfs_inode_measure_sickness(ip, &sick, &checked);
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for (m = ino_map; m->sick_mask; m++) {
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if (checked & m->sick_mask)
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bs->bs_checked |= m->ioctl_mask;
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if (sick & m->sick_mask)
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bs->bs_sick |= m->ioctl_mask;
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}
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}
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