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https://github.com/torvalds/linux
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xfs: create helpers to record and deal with scrub problems
Create helper functions to record crc and corruption problems, and deal with any other runtime errors that arise. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
parent
dcb660f922
commit
4700d22980
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@ -47,6 +47,196 @@
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/* Common code for the metadata scrubbers. */
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/*
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* Handling operational errors.
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*
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* The *_process_error() family of functions are used to process error return
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* codes from functions called as part of a scrub operation.
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*
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* If there's no error, we return true to tell the caller that it's ok
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* to move on to the next check in its list.
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*
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* For non-verifier errors (e.g. ENOMEM) we return false to tell the
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* caller that something bad happened, and we preserve *error so that
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* the caller can return the *error up the stack to userspace.
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*
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* Verifier errors (EFSBADCRC/EFSCORRUPTED) are recorded by setting
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* OFLAG_CORRUPT in sm_flags and the *error is cleared. In other words,
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* we track verifier errors (and failed scrub checks) via OFLAG_CORRUPT,
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* not via return codes. We return false to tell the caller that
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* something bad happened. Since the error has been cleared, the caller
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* will (presumably) return that zero and scrubbing will move on to
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* whatever's next.
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*
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* ftrace can be used to record the precise metadata location and the
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* approximate code location of the failed operation.
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*/
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/* Check for operational errors. */
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bool
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xfs_scrub_process_error(
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struct xfs_scrub_context *sc,
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xfs_agnumber_t agno,
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xfs_agblock_t bno,
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int *error)
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{
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switch (*error) {
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case 0:
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return true;
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case -EDEADLOCK:
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/* Used to restart an op with deadlock avoidance. */
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trace_xfs_scrub_deadlock_retry(sc->ip, sc->sm, *error);
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break;
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case -EFSBADCRC:
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case -EFSCORRUPTED:
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/* Note the badness but don't abort. */
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT;
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*error = 0;
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/* fall through */
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default:
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trace_xfs_scrub_op_error(sc, agno, bno, *error,
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__return_address);
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break;
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}
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return false;
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}
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/* Check for operational errors for a file offset. */
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bool
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xfs_scrub_fblock_process_error(
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struct xfs_scrub_context *sc,
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int whichfork,
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xfs_fileoff_t offset,
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int *error)
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{
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switch (*error) {
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case 0:
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return true;
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case -EDEADLOCK:
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/* Used to restart an op with deadlock avoidance. */
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trace_xfs_scrub_deadlock_retry(sc->ip, sc->sm, *error);
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break;
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case -EFSBADCRC:
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case -EFSCORRUPTED:
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/* Note the badness but don't abort. */
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT;
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*error = 0;
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/* fall through */
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default:
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trace_xfs_scrub_file_op_error(sc, whichfork, offset, *error,
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__return_address);
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break;
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}
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return false;
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}
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/*
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* Handling scrub corruption/optimization/warning checks.
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*
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* The *_set_{corrupt,preen,warning}() family of functions are used to
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* record the presence of metadata that is incorrect (corrupt), could be
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* optimized somehow (preen), or should be flagged for administrative
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* review but is not incorrect (warn).
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*
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* ftrace can be used to record the precise metadata location and
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* approximate code location of the failed check.
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*/
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/* Record a block which could be optimized. */
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void
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xfs_scrub_block_set_preen(
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struct xfs_scrub_context *sc,
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struct xfs_buf *bp)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_PREEN;
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trace_xfs_scrub_block_preen(sc, bp->b_bn, __return_address);
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}
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/*
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* Record an inode which could be optimized. The trace data will
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* include the block given by bp if bp is given; otherwise it will use
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* the block location of the inode record itself.
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*/
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void
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xfs_scrub_ino_set_preen(
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struct xfs_scrub_context *sc,
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struct xfs_buf *bp)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_PREEN;
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trace_xfs_scrub_ino_preen(sc, sc->ip->i_ino, bp ? bp->b_bn : 0,
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__return_address);
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}
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/* Record a corrupt block. */
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void
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xfs_scrub_block_set_corrupt(
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struct xfs_scrub_context *sc,
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struct xfs_buf *bp)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT;
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trace_xfs_scrub_block_error(sc, bp->b_bn, __return_address);
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}
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/*
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* Record a corrupt inode. The trace data will include the block given
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* by bp if bp is given; otherwise it will use the block location of the
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* inode record itself.
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*/
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void
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xfs_scrub_ino_set_corrupt(
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struct xfs_scrub_context *sc,
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xfs_ino_t ino,
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struct xfs_buf *bp)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT;
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trace_xfs_scrub_ino_error(sc, ino, bp ? bp->b_bn : 0, __return_address);
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}
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/* Record corruption in a block indexed by a file fork. */
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void
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xfs_scrub_fblock_set_corrupt(
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struct xfs_scrub_context *sc,
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int whichfork,
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xfs_fileoff_t offset)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT;
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trace_xfs_scrub_fblock_error(sc, whichfork, offset, __return_address);
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}
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/*
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* Warn about inodes that need administrative review but is not
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* incorrect.
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*/
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void
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xfs_scrub_ino_set_warning(
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struct xfs_scrub_context *sc,
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struct xfs_buf *bp)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_WARNING;
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trace_xfs_scrub_ino_warning(sc, sc->ip->i_ino, bp ? bp->b_bn : 0,
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__return_address);
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}
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/* Warn about a block indexed by a file fork that needs review. */
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void
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xfs_scrub_fblock_set_warning(
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struct xfs_scrub_context *sc,
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int whichfork,
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xfs_fileoff_t offset)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_WARNING;
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trace_xfs_scrub_fblock_warning(sc, whichfork, offset, __return_address);
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}
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/* Signal an incomplete scrub. */
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void
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xfs_scrub_set_incomplete(
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struct xfs_scrub_context *sc)
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{
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sc->sm->sm_flags |= XFS_SCRUB_OFLAG_INCOMPLETE;
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trace_xfs_scrub_incomplete(sc, __return_address);
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}
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/* Per-scrubber setup functions */
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/* Set us up with a transaction and an empty context. */
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@ -51,6 +51,29 @@ xfs_scrub_trans_alloc(
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return xfs_trans_alloc_empty(mp, tpp);
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}
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bool xfs_scrub_process_error(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
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xfs_agblock_t bno, int *error);
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bool xfs_scrub_fblock_process_error(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset, int *error);
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void xfs_scrub_block_set_preen(struct xfs_scrub_context *sc,
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struct xfs_buf *bp);
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void xfs_scrub_ino_set_preen(struct xfs_scrub_context *sc, struct xfs_buf *bp);
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void xfs_scrub_block_set_corrupt(struct xfs_scrub_context *sc,
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struct xfs_buf *bp);
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void xfs_scrub_ino_set_corrupt(struct xfs_scrub_context *sc, xfs_ino_t ino,
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struct xfs_buf *bp);
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void xfs_scrub_fblock_set_corrupt(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset);
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void xfs_scrub_ino_set_warning(struct xfs_scrub_context *sc,
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struct xfs_buf *bp);
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void xfs_scrub_fblock_set_warning(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset);
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void xfs_scrub_set_incomplete(struct xfs_scrub_context *sc);
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/* Setup functions */
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int xfs_scrub_setup_fs(struct xfs_scrub_context *sc, struct xfs_inode *ip);
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@ -24,6 +24,7 @@
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#define _TRACE_XFS_SCRUB_TRACE_H
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#include <linux/tracepoint.h>
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#include "xfs_bit.h"
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DECLARE_EVENT_CLASS(xfs_scrub_class,
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TP_PROTO(struct xfs_inode *ip, struct xfs_scrub_metadata *sm,
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@ -67,6 +68,220 @@ DEFINE_EVENT(xfs_scrub_class, name, \
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DEFINE_SCRUB_EVENT(xfs_scrub_start);
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DEFINE_SCRUB_EVENT(xfs_scrub_done);
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DEFINE_SCRUB_EVENT(xfs_scrub_deadlock_retry);
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TRACE_EVENT(xfs_scrub_op_error,
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TP_PROTO(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
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xfs_agblock_t bno, int error, void *ret_ip),
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TP_ARGS(sc, agno, bno, error, ret_ip),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(unsigned int, type)
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__field(xfs_agnumber_t, agno)
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__field(xfs_agblock_t, bno)
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__field(int, error)
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__field(void *, ret_ip)
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),
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TP_fast_assign(
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__entry->dev = sc->mp->m_super->s_dev;
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__entry->type = sc->sm->sm_type;
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__entry->agno = agno;
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__entry->bno = bno;
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__entry->error = error;
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__entry->ret_ip = ret_ip;
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),
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TP_printk("dev %d:%d type %u agno %u agbno %u error %d ret_ip %pF",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->type,
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__entry->agno,
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__entry->bno,
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__entry->error,
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__entry->ret_ip)
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);
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TRACE_EVENT(xfs_scrub_file_op_error,
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TP_PROTO(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset, int error, void *ret_ip),
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TP_ARGS(sc, whichfork, offset, error, ret_ip),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(xfs_ino_t, ino)
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__field(int, whichfork)
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__field(unsigned int, type)
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__field(xfs_fileoff_t, offset)
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__field(int, error)
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__field(void *, ret_ip)
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),
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TP_fast_assign(
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__entry->dev = sc->ip->i_mount->m_super->s_dev;
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__entry->ino = sc->ip->i_ino;
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__entry->whichfork = whichfork;
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__entry->type = sc->sm->sm_type;
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__entry->offset = offset;
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__entry->error = error;
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__entry->ret_ip = ret_ip;
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),
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TP_printk("dev %d:%d ino %llu fork %d type %u offset %llu error %d ret_ip %pF",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->whichfork,
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__entry->type,
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__entry->offset,
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__entry->error,
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__entry->ret_ip)
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);
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DECLARE_EVENT_CLASS(xfs_scrub_block_error_class,
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TP_PROTO(struct xfs_scrub_context *sc, xfs_daddr_t daddr, void *ret_ip),
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TP_ARGS(sc, daddr, ret_ip),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(unsigned int, type)
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__field(xfs_agnumber_t, agno)
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__field(xfs_agblock_t, bno)
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__field(void *, ret_ip)
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),
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TP_fast_assign(
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xfs_fsblock_t fsbno;
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xfs_agnumber_t agno;
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xfs_agblock_t bno;
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fsbno = XFS_DADDR_TO_FSB(sc->mp, daddr);
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agno = XFS_FSB_TO_AGNO(sc->mp, fsbno);
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bno = XFS_FSB_TO_AGBNO(sc->mp, fsbno);
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__entry->dev = sc->mp->m_super->s_dev;
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__entry->type = sc->sm->sm_type;
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__entry->agno = agno;
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__entry->bno = bno;
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__entry->ret_ip = ret_ip;
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),
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TP_printk("dev %d:%d type %u agno %u agbno %u ret_ip %pF",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->type,
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__entry->agno,
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__entry->bno,
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__entry->ret_ip)
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)
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#define DEFINE_SCRUB_BLOCK_ERROR_EVENT(name) \
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DEFINE_EVENT(xfs_scrub_block_error_class, name, \
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TP_PROTO(struct xfs_scrub_context *sc, xfs_daddr_t daddr, \
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void *ret_ip), \
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TP_ARGS(sc, daddr, ret_ip))
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DEFINE_SCRUB_BLOCK_ERROR_EVENT(xfs_scrub_block_error);
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DEFINE_SCRUB_BLOCK_ERROR_EVENT(xfs_scrub_block_preen);
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DECLARE_EVENT_CLASS(xfs_scrub_ino_error_class,
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TP_PROTO(struct xfs_scrub_context *sc, xfs_ino_t ino, xfs_daddr_t daddr,
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void *ret_ip),
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TP_ARGS(sc, ino, daddr, ret_ip),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(xfs_ino_t, ino)
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__field(unsigned int, type)
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__field(xfs_agnumber_t, agno)
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__field(xfs_agblock_t, bno)
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__field(void *, ret_ip)
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),
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TP_fast_assign(
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xfs_fsblock_t fsbno;
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xfs_agnumber_t agno;
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xfs_agblock_t bno;
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if (daddr) {
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fsbno = XFS_DADDR_TO_FSB(sc->mp, daddr);
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agno = XFS_FSB_TO_AGNO(sc->mp, fsbno);
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bno = XFS_FSB_TO_AGBNO(sc->mp, fsbno);
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} else {
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agno = XFS_INO_TO_AGNO(sc->mp, ino);
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bno = XFS_AGINO_TO_AGBNO(sc->mp,
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XFS_INO_TO_AGINO(sc->mp, ino));
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}
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__entry->dev = sc->mp->m_super->s_dev;
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__entry->ino = ino;
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__entry->type = sc->sm->sm_type;
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__entry->agno = agno;
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__entry->bno = bno;
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__entry->ret_ip = ret_ip;
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),
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TP_printk("dev %d:%d ino %llu type %u agno %u agbno %u ret_ip %pF",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->type,
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__entry->agno,
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__entry->bno,
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__entry->ret_ip)
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)
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#define DEFINE_SCRUB_INO_ERROR_EVENT(name) \
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DEFINE_EVENT(xfs_scrub_ino_error_class, name, \
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TP_PROTO(struct xfs_scrub_context *sc, xfs_ino_t ino, \
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xfs_daddr_t daddr, void *ret_ip), \
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TP_ARGS(sc, ino, daddr, ret_ip))
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DEFINE_SCRUB_INO_ERROR_EVENT(xfs_scrub_ino_error);
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DEFINE_SCRUB_INO_ERROR_EVENT(xfs_scrub_ino_preen);
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DEFINE_SCRUB_INO_ERROR_EVENT(xfs_scrub_ino_warning);
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DECLARE_EVENT_CLASS(xfs_scrub_fblock_error_class,
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TP_PROTO(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset, void *ret_ip),
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TP_ARGS(sc, whichfork, offset, ret_ip),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(xfs_ino_t, ino)
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__field(int, whichfork)
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__field(unsigned int, type)
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__field(xfs_fileoff_t, offset)
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__field(void *, ret_ip)
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),
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TP_fast_assign(
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__entry->dev = sc->ip->i_mount->m_super->s_dev;
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__entry->ino = sc->ip->i_ino;
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__entry->whichfork = whichfork;
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__entry->type = sc->sm->sm_type;
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__entry->offset = offset;
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__entry->ret_ip = ret_ip;
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),
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TP_printk("dev %d:%d ino %llu fork %d type %u offset %llu ret_ip %pF",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->whichfork,
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__entry->type,
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__entry->offset,
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__entry->ret_ip)
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);
|
||||
|
||||
#define DEFINE_SCRUB_FBLOCK_ERROR_EVENT(name) \
|
||||
DEFINE_EVENT(xfs_scrub_fblock_error_class, name, \
|
||||
TP_PROTO(struct xfs_scrub_context *sc, int whichfork, \
|
||||
xfs_fileoff_t offset, void *ret_ip), \
|
||||
TP_ARGS(sc, whichfork, offset, ret_ip))
|
||||
|
||||
DEFINE_SCRUB_FBLOCK_ERROR_EVENT(xfs_scrub_fblock_error);
|
||||
DEFINE_SCRUB_FBLOCK_ERROR_EVENT(xfs_scrub_fblock_warning);
|
||||
|
||||
TRACE_EVENT(xfs_scrub_incomplete,
|
||||
TP_PROTO(struct xfs_scrub_context *sc, void *ret_ip),
|
||||
TP_ARGS(sc, ret_ip),
|
||||
TP_STRUCT__entry(
|
||||
__field(dev_t, dev)
|
||||
__field(unsigned int, type)
|
||||
__field(void *, ret_ip)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->dev = sc->mp->m_super->s_dev;
|
||||
__entry->type = sc->sm->sm_type;
|
||||
__entry->ret_ip = ret_ip;
|
||||
),
|
||||
TP_printk("dev %d:%d type %u ret_ip %pF",
|
||||
MAJOR(__entry->dev), MINOR(__entry->dev),
|
||||
__entry->type,
|
||||
__entry->ret_ip)
|
||||
);
|
||||
|
||||
#endif /* _TRACE_XFS_SCRUB_TRACE_H */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue