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xfs: online scrubbing of realtime summary files [v26.1]

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This patchset implements an online checker for the realtime summary
 file.  The first few changes are some general cleanups -- scrub should
 get its own references to all inodes, and we also wrap the inode lock
 functions so that we can standardize unlocking and releasing inodes that
 are the focus of a scrub.
 
 With that out of the way, we move on to constructing a shadow copy of
 the rtsummary information from the rtbitmap, and compare the new copy
 against the ondisk copy.
 
 This has been running on the djcloud for years with no problems.  Enjoy!
 
 Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Merge tag 'scrub-rtsummary-6.6_2023-08-10' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.6-mergeA

xfs: online scrubbing of realtime summary files

This patchset implements an online checker for the realtime summary
file.  The first few changes are some general cleanups -- scrub should
get its own references to all inodes, and we also wrap the inode lock
functions so that we can standardize unlocking and releasing inodes that
are the focus of a scrub.

With that out of the way, we move on to constructing a shadow copy of
the rtsummary information from the rtbitmap, and compare the new copy
against the ondisk copy.

This has been running on the djcloud for years with no problems.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>

* tag 'scrub-rtsummary-6.6_2023-08-10' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
  xfs: implement online scrubbing of rtsummary info
  xfs: move the realtime summary file scrubber to a separate source file
  xfs: wrap ilock/iunlock operations on sc->ip
  xfs: get our own reference to inodes that we want to scrub
This commit is contained in:
Chandan Babu R 2023-08-18 13:25:53 +05:30
commit df7833234b
13 changed files with 421 additions and 82 deletions
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