mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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xfs: track metadata health status
Add the necessary in-core metadata fields to keep track of which parts of the filesystem have been observed and which parts were observed to be unhealthy, and print a warning at unmount time if we have unfixed problems. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong
parent
2bf9d264ef
commit
6772c1f112
@ -73,6 +73,7 @@ xfs-y += xfs_aops.o \
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xfs_fsmap.o \
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xfs_fsops.o \
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xfs_globals.o \
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xfs_health.o \
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xfs_icache.o \
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xfs_ioctl.o \
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xfs_iomap.o \
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183
fs/xfs/libxfs/xfs_health.h
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183
fs/xfs/libxfs/xfs_health.h
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@ -0,0 +1,183 @@
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// 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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#ifndef __XFS_HEALTH_H__
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#define __XFS_HEALTH_H__
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/*
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* In-Core Filesystem Health Assessments
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* =====================================
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*
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* We'd like to be able to summarize the current health status of the
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* filesystem so that the administrator knows when it's necessary to schedule
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* some downtime for repairs. Until then, we would also like to avoid abrupt
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* shutdowns due to corrupt metadata.
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*
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* The online scrub feature evaluates the health of all filesystem metadata.
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* When scrub detects corruption in a piece of metadata it will set the
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* corresponding sickness flag, and repair will clear it if successful. If
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* problems remain at unmount time, we can also request manual intervention by
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* logging a notice to run xfs_repair.
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*
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* Each health tracking group uses a pair of fields for reporting. The
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* "checked" field tell us if a given piece of metadata has ever been examined,
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* and the "sick" field tells us if that piece was found to need repairs.
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* Therefore we can conclude that for a given sick flag value:
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*
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* - checked && sick => metadata needs repair
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* - checked && !sick => metadata is ok
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* - !checked => has not been examined since mount
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*/
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struct xfs_mount;
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struct xfs_perag;
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struct xfs_inode;
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/* Observable health issues for metadata spanning the entire filesystem. */
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#define XFS_SICK_FS_COUNTERS (1 << 0) /* summary counters */
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#define XFS_SICK_FS_UQUOTA (1 << 1) /* user quota */
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#define XFS_SICK_FS_GQUOTA (1 << 2) /* group quota */
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#define XFS_SICK_FS_PQUOTA (1 << 3) /* project quota */
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/* Observable health issues for realtime volume metadata. */
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#define XFS_SICK_RT_BITMAP (1 << 0) /* realtime bitmap */
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#define XFS_SICK_RT_SUMMARY (1 << 1) /* realtime summary */
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/* Observable health issues for AG metadata. */
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#define XFS_SICK_AG_SB (1 << 0) /* superblock */
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#define XFS_SICK_AG_AGF (1 << 1) /* AGF header */
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#define XFS_SICK_AG_AGFL (1 << 2) /* AGFL header */
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#define XFS_SICK_AG_AGI (1 << 3) /* AGI header */
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#define XFS_SICK_AG_BNOBT (1 << 4) /* free space by block */
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#define XFS_SICK_AG_CNTBT (1 << 5) /* free space by length */
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#define XFS_SICK_AG_INOBT (1 << 6) /* inode index */
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#define XFS_SICK_AG_FINOBT (1 << 7) /* free inode index */
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#define XFS_SICK_AG_RMAPBT (1 << 8) /* reverse mappings */
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#define XFS_SICK_AG_REFCNTBT (1 << 9) /* reference counts */
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/* Observable health issues for inode metadata. */
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#define XFS_SICK_INO_CORE (1 << 0) /* inode core */
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#define XFS_SICK_INO_BMBTD (1 << 1) /* data fork */
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#define XFS_SICK_INO_BMBTA (1 << 2) /* attr fork */
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#define XFS_SICK_INO_BMBTC (1 << 3) /* cow fork */
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#define XFS_SICK_INO_DIR (1 << 4) /* directory */
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#define XFS_SICK_INO_XATTR (1 << 5) /* extended attributes */
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#define XFS_SICK_INO_SYMLINK (1 << 6) /* symbolic link remote target */
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#define XFS_SICK_INO_PARENT (1 << 7) /* parent pointers */
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/* Primary evidence of health problems in a given group. */
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#define XFS_SICK_FS_PRIMARY (XFS_SICK_FS_COUNTERS | \
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XFS_SICK_FS_UQUOTA | \
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XFS_SICK_FS_GQUOTA | \
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XFS_SICK_FS_PQUOTA)
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#define XFS_SICK_RT_PRIMARY (XFS_SICK_RT_BITMAP | \
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XFS_SICK_RT_SUMMARY)
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#define XFS_SICK_AG_PRIMARY (XFS_SICK_AG_SB | \
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XFS_SICK_AG_AGF | \
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XFS_SICK_AG_AGFL | \
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XFS_SICK_AG_AGI | \
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XFS_SICK_AG_BNOBT | \
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XFS_SICK_AG_CNTBT | \
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XFS_SICK_AG_INOBT | \
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XFS_SICK_AG_FINOBT | \
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XFS_SICK_AG_RMAPBT | \
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XFS_SICK_AG_REFCNTBT)
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#define XFS_SICK_INO_PRIMARY (XFS_SICK_INO_CORE | \
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XFS_SICK_INO_BMBTD | \
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XFS_SICK_INO_BMBTA | \
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XFS_SICK_INO_BMBTC | \
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XFS_SICK_INO_DIR | \
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XFS_SICK_INO_XATTR | \
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XFS_SICK_INO_SYMLINK | \
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XFS_SICK_INO_PARENT)
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/* These functions must be provided by the xfs implementation. */
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void xfs_fs_mark_sick(struct xfs_mount *mp, unsigned int mask);
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void xfs_fs_mark_healthy(struct xfs_mount *mp, unsigned int mask);
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void xfs_fs_measure_sickness(struct xfs_mount *mp, unsigned int *sick,
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unsigned int *checked);
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void xfs_rt_mark_sick(struct xfs_mount *mp, unsigned int mask);
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void xfs_rt_mark_healthy(struct xfs_mount *mp, unsigned int mask);
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void xfs_rt_measure_sickness(struct xfs_mount *mp, unsigned int *sick,
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unsigned int *checked);
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void xfs_ag_mark_sick(struct xfs_perag *pag, unsigned int mask);
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void xfs_ag_mark_healthy(struct xfs_perag *pag, unsigned int mask);
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void xfs_ag_measure_sickness(struct xfs_perag *pag, unsigned int *sick,
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unsigned int *checked);
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void xfs_inode_mark_sick(struct xfs_inode *ip, unsigned int mask);
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void xfs_inode_mark_healthy(struct xfs_inode *ip, unsigned int mask);
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void xfs_inode_measure_sickness(struct xfs_inode *ip, unsigned int *sick,
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unsigned int *checked);
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/* Now some helpers. */
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static inline bool
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xfs_fs_has_sickness(struct xfs_mount *mp, unsigned int mask)
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{
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unsigned int sick, checked;
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xfs_fs_measure_sickness(mp, &sick, &checked);
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return sick & mask;
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}
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static inline bool
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xfs_rt_has_sickness(struct xfs_mount *mp, unsigned int mask)
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{
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unsigned int sick, checked;
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xfs_rt_measure_sickness(mp, &sick, &checked);
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return sick & mask;
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}
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static inline bool
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xfs_ag_has_sickness(struct xfs_perag *pag, unsigned int mask)
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{
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unsigned int sick, checked;
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xfs_ag_measure_sickness(pag, &sick, &checked);
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return sick & mask;
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}
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static inline bool
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xfs_inode_has_sickness(struct xfs_inode *ip, unsigned int mask)
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{
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unsigned int sick, checked;
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xfs_inode_measure_sickness(ip, &sick, &checked);
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return sick & mask;
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}
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static inline bool
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xfs_fs_is_healthy(struct xfs_mount *mp)
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{
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return !xfs_fs_has_sickness(mp, -1U);
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}
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static inline bool
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xfs_rt_is_healthy(struct xfs_mount *mp)
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{
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return !xfs_rt_has_sickness(mp, -1U);
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}
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static inline bool
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xfs_ag_is_healthy(struct xfs_perag *pag)
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{
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return !xfs_ag_has_sickness(pag, -1U);
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}
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static inline bool
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xfs_inode_is_healthy(struct xfs_inode *ip)
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{
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return !xfs_inode_has_sickness(ip, -1U);
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}
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#endif /* __XFS_HEALTH_H__ */
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192
fs/xfs/xfs_health.c
Normal file
192
fs/xfs/xfs_health.c
Normal file
@ -0,0 +1,192 @@
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// 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_bit.h"
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#include "xfs_sb.h"
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#include "xfs_mount.h"
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#include "xfs_defer.h"
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#include "xfs_da_format.h"
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#include "xfs_da_btree.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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/* 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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@ -70,6 +70,8 @@ xfs_inode_alloc(
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ip->i_flags = 0;
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ip->i_delayed_blks = 0;
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memset(&ip->i_d, 0, sizeof(ip->i_d));
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ip->i_sick = 0;
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ip->i_checked = 0;
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return ip;
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}
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@ -446,6 +448,8 @@ xfs_iget_cache_hit(
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ip->i_flags |= XFS_INEW;
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xfs_inode_clear_reclaim_tag(pag, ip->i_ino);
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inode->i_state = I_NEW;
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ip->i_sick = 0;
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ip->i_checked = 0;
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ASSERT(!rwsem_is_locked(&inode->i_rwsem));
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init_rwsem(&inode->i_rwsem);
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@ -45,6 +45,14 @@ typedef struct xfs_inode {
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mrlock_t i_lock; /* inode lock */
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mrlock_t i_mmaplock; /* inode mmap IO lock */
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atomic_t i_pincount; /* inode pin count */
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/*
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* Bitsets of inode metadata that have been checked and/or are sick.
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* Callers must hold i_flags_lock before accessing this field.
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*/
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uint16_t i_checked;
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uint16_t i_sick;
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spinlock_t i_flags_lock; /* inode i_flags lock */
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/* Miscellaneous state. */
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unsigned long i_flags; /* see defined flags below */
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@ -231,6 +231,7 @@ xfs_initialize_perag(
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error = xfs_iunlink_init(pag);
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if (error)
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goto out_hash_destroy;
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spin_lock_init(&pag->pag_state_lock);
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}
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index = xfs_set_inode_alloc(mp, agcount);
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@ -60,6 +60,20 @@ struct xfs_error_cfg {
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typedef struct xfs_mount {
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struct super_block *m_super;
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xfs_tid_t m_tid; /* next unused tid for fs */
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/*
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* Bitsets of per-fs metadata that have been checked and/or are sick.
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* Callers must hold m_sb_lock to access these two fields.
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*/
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uint8_t m_fs_checked;
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uint8_t m_fs_sick;
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/*
|
||||
* Bitsets of rt metadata that have been checked and/or are sick.
|
||||
* Callers must hold m_sb_lock to access this field.
|
||||
*/
|
||||
uint8_t m_rt_checked;
|
||||
uint8_t m_rt_sick;
|
||||
|
||||
struct xfs_ail *m_ail; /* fs active log item list */
|
||||
|
||||
struct xfs_sb m_sb; /* copy of fs superblock */
|
||||
@ -369,6 +383,15 @@ typedef struct xfs_perag {
|
||||
xfs_agino_t pagl_pagino;
|
||||
xfs_agino_t pagl_leftrec;
|
||||
xfs_agino_t pagl_rightrec;
|
||||
|
||||
/*
|
||||
* Bitsets of per-ag metadata that have been checked and/or are sick.
|
||||
* Callers should hold pag_state_lock before accessing this field.
|
||||
*/
|
||||
uint16_t pag_checked;
|
||||
uint16_t pag_sick;
|
||||
spinlock_t pag_state_lock;
|
||||
|
||||
spinlock_t pagb_lock; /* lock for pagb_tree */
|
||||
struct rb_root pagb_tree; /* ordered tree of busy extents */
|
||||
unsigned int pagb_gen; /* generation count for pagb_tree */
|
||||
|
||||
@ -3440,6 +3440,79 @@ DEFINE_AGINODE_EVENT(xfs_iunlink);
|
||||
DEFINE_AGINODE_EVENT(xfs_iunlink_remove);
|
||||
DEFINE_AG_EVENT(xfs_iunlink_map_prev_fallback);
|
||||
|
||||
DECLARE_EVENT_CLASS(xfs_fs_corrupt_class,
|
||||
TP_PROTO(struct xfs_mount *mp, unsigned int flags),
|
||||
TP_ARGS(mp, flags),
|
||||
TP_STRUCT__entry(
|
||||
__field(dev_t, dev)
|
||||
__field(unsigned int, flags)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->dev = mp->m_super->s_dev;
|
||||
__entry->flags = flags;
|
||||
),
|
||||
TP_printk("dev %d:%d flags 0x%x",
|
||||
MAJOR(__entry->dev), MINOR(__entry->dev),
|
||||
__entry->flags)
|
||||
);
|
||||
#define DEFINE_FS_CORRUPT_EVENT(name) \
|
||||
DEFINE_EVENT(xfs_fs_corrupt_class, name, \
|
||||
TP_PROTO(struct xfs_mount *mp, unsigned int flags), \
|
||||
TP_ARGS(mp, flags))
|
||||
DEFINE_FS_CORRUPT_EVENT(xfs_fs_mark_sick);
|
||||
DEFINE_FS_CORRUPT_EVENT(xfs_fs_mark_healthy);
|
||||
DEFINE_FS_CORRUPT_EVENT(xfs_rt_mark_sick);
|
||||
DEFINE_FS_CORRUPT_EVENT(xfs_rt_mark_healthy);
|
||||
|
||||
DECLARE_EVENT_CLASS(xfs_ag_corrupt_class,
|
||||
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, unsigned int flags),
|
||||
TP_ARGS(mp, agno, flags),
|
||||
TP_STRUCT__entry(
|
||||
__field(dev_t, dev)
|
||||
__field(xfs_agnumber_t, agno)
|
||||
__field(unsigned int, flags)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->dev = mp->m_super->s_dev;
|
||||
__entry->agno = agno;
|
||||
__entry->flags = flags;
|
||||
),
|
||||
TP_printk("dev %d:%d agno %u flags 0x%x",
|
||||
MAJOR(__entry->dev), MINOR(__entry->dev),
|
||||
__entry->agno, __entry->flags)
|
||||
);
|
||||
#define DEFINE_AG_CORRUPT_EVENT(name) \
|
||||
DEFINE_EVENT(xfs_ag_corrupt_class, name, \
|
||||
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \
|
||||
unsigned int flags), \
|
||||
TP_ARGS(mp, agno, flags))
|
||||
DEFINE_AG_CORRUPT_EVENT(xfs_ag_mark_sick);
|
||||
DEFINE_AG_CORRUPT_EVENT(xfs_ag_mark_healthy);
|
||||
|
||||
DECLARE_EVENT_CLASS(xfs_inode_corrupt_class,
|
||||
TP_PROTO(struct xfs_inode *ip, unsigned int flags),
|
||||
TP_ARGS(ip, flags),
|
||||
TP_STRUCT__entry(
|
||||
__field(dev_t, dev)
|
||||
__field(xfs_ino_t, ino)
|
||||
__field(unsigned int, flags)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->dev = ip->i_mount->m_super->s_dev;
|
||||
__entry->ino = ip->i_ino;
|
||||
__entry->flags = flags;
|
||||
),
|
||||
TP_printk("dev %d:%d ino 0x%llx flags 0x%x",
|
||||
MAJOR(__entry->dev), MINOR(__entry->dev),
|
||||
__entry->ino, __entry->flags)
|
||||
);
|
||||
#define DEFINE_INODE_CORRUPT_EVENT(name) \
|
||||
DEFINE_EVENT(xfs_inode_corrupt_class, name, \
|
||||
TP_PROTO(struct xfs_inode *ip, unsigned int flags), \
|
||||
TP_ARGS(ip, flags))
|
||||
DEFINE_INODE_CORRUPT_EVENT(xfs_inode_mark_sick);
|
||||
DEFINE_INODE_CORRUPT_EVENT(xfs_inode_mark_healthy);
|
||||
|
||||
#endif /* _TRACE_XFS_H */
|
||||
|
||||
#undef TRACE_INCLUDE_PATH
|
||||
|
||||
Loading…
Reference in New Issue
Block a user