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path: root/fs/xfs/scrub/scrub.h
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* xfs: cross-reference the realtime bitmapDarrick J. Wong2018-01-17
| | | | | | | | While we're scrubbing various btrees, cross-reference the records with the other metadata. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: cross-reference refcount btree during scrubDarrick J. Wong2018-01-17
| | | | | | | | During metadata btree scrub, we should cross-reference with the reference counts. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: cross-reference reverse-mapping btreeDarrick J. Wong2018-01-17
| | | | | | | | | | When scrubbing various btrees, we should cross-reference the records with the reverse mapping btree and ensure that traversing the btree finds the same number of blocks that the rmapbt thinks are owned by that btree. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: cross-reference inode btrees during scrubDarrick J. Wong2018-01-17
| | | | | | | | Cross-reference the inode btrees with the other metadata when we scrub the filesystem. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: cross-reference with the bnobtDarrick J. Wong2018-01-17
| | | | | | | | When we're scrubbing various btrees, cross-reference the records with the bnobt to ensure that we don't also think the space is free. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: move all scrub input checking to xfs_scrub_validateEric Sandeen2018-01-08
| | | | | | | | | | | | | | There were ad-hoc checks for some scrub types but not others; mark each scrub type with ... it's type, and use that to validate the allowed and/or required input fields. Moving these checks out of xfs_scrub_setup_ag_header makes it a thin wrapper, so unwrap it in the process. Signed-off-by: Eric Sandeen <sandeen@redhat.com> [darrick: add xfs_ prefix to enum, check scrub args after checking type] Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
* xfs: scrub quota informationDarrick J. Wong2017-10-26
| | | | | | | Perform some quick sanity testing of the disk quota information. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub realtime bitmap/summaryDarrick J. Wong2017-10-26
| | | | | | | Perform simple tests of the realtime bitmap and summary. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub directory parent pointersDarrick J. Wong2017-10-26
| | | | | | | | | Scrub parent pointers, sort of. For directories, we can ride the '..' entry up to the parent to confirm that there's at most one dentry that points back to this directory. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub symbolic linksDarrick J. Wong2017-10-26
| | | | | | | Create the infrastructure to scrub symbolic link data. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub extended attributesDarrick J. Wong2017-10-26
| | | | | | | | | Scrub the hash tree, keys, and values in an extended attribute structure. Refactor the attribute code to use the transaction if the caller supplied one to avoid buffer deadocks. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub directory metadataDarrick J. Wong2017-10-26
| | | | | | | Scrub the hash tree and all the entries in a directory. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub inode block mappingsDarrick J. Wong2017-10-26
| | | | | | | Scrub an individual inode's block mappings to make sure they make sense. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub inodesDarrick J. Wong2017-10-26
| | | | | | | Scrub the fields within an inode. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub refcount btreesDarrick J. Wong2017-10-26
| | | | | | | | | Plumb in the pieces necessary to check the refcount btree. If rmap is available, check the reference count by performing an interval query against the rmapbt. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub rmap btreesDarrick J. Wong2017-10-26
| | | | | | | | Check the reverse mapping records to make sure that the contents make sense. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub inode btreesDarrick J. Wong2017-10-26
| | | | | | | | Check the records of the inode btrees to make sure that the values make sense given the inode records themselves. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub free space btreesDarrick J. Wong2017-10-26
| | | | | | | | Check the extent records free space btrees to ensure that the values look sane. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub the AGIDarrick J. Wong2017-10-26
| | | | | | | | Add a forgotten check to the AGI verifier, then wire up the scrub infrastructure to check the AGI contents. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub AGF and AGFLDarrick J. Wong2017-10-26
| | | | | | | | Check the block references in the AGF and AGFL headers to make sure they make sense. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: scrub the secondary superblocksDarrick J. Wong2017-10-26
| | | | | | | | | Ensure that the geometry presented in the backup superblocks matches the primary superblock so that repair can recover the filesystem if that primary gets corrupted. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: create helpers to scan an allocation groupDarrick J. Wong2017-10-26
| | | | | | | | | Add some helpers to enable us to lock an AG's headers, create btree cursors for all btrees in that allocation group, and clean up afterwards. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: probe the scrub ioctlDarrick J. Wong2017-10-26
| | | | | | | | | | | | | Create a probe scrubber with id 0. This will be used by xfs_scrub to probe the kernel's abilities to scrub (and repair) the metadata. We do this by validating the ioctl inputs from userspace, preparing the filesystem for a scrub (or a repair) operation, and immediately returning to userspace. Userspace can use the returned errno and structure state to decide (in broad terms) if scrub/repair are supported by the running kernel. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: dispatch metadata scrub subcommandsDarrick J. Wong2017-10-26
| | | | | | | | Create structures needed to hold scrubbing context and dispatch incoming commands to the individual scrubbers. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* xfs: create an ioctl to scrub AG metadataDarrick J. Wong2017-10-26
Create an ioctl that can be used to scrub internal filesystem metadata. The new ioctl takes the metadata type, an (optional) AG number, an (optional) inode number and generation, and a flags argument. This will be used by the upcoming XFS online scrub tool. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
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