From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: sandeen@sandeen.net, darrick.wong@oracle.com
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH 00/11] xfs_scrub: fix IO error detection during media verify
Date: Mon, 26 Aug 2019 14:29:51 -0700 [thread overview]
Message-ID: <156685499099.2841898.18430382226915450537.stgit@magnolia> (raw)
Hi all,
The existing scrub media scan code (phase 6) has a lot of problems
dealing with errors. It treats runtime errors (e.g. ENOMEM) as disk
errors, it fails to handle short reads properly, it reports entire
extents as failed when the read returns EIO instead of single-stepping
filesystem blocks to find the bad ones, and there's no good way to test
that it works.
This series fixes each of those problems and adds a couple of debugging
knobs so that we can simulate disk errors and short reads to make sure
that the media scan code actually detects media errors correctly.
If you're going to start using this mess, you probably ought to just
pull from my git trees, which are linked below.
This is an extraordinary way to destroy everything. Enjoy!
Comments and questions are, as always, welcome.
--D
xfsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=scrub-media-error-detection
next reply other threads:[~2019-08-26 21:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-26 21:29 Darrick J. Wong [this message]
2019-08-26 21:29 ` [PATCH 01/11] xfs_scrub: fix handling of read-verify pool runtime errors Darrick J. Wong
2019-08-26 21:30 ` [PATCH 02/11] xfs_scrub: abort all read verification work immediately on error Darrick J. Wong
2019-08-26 21:30 ` [PATCH 03/11] xfs_scrub: fix read-verify pool error communication problems Darrick J. Wong
2019-08-26 21:30 ` [PATCH 04/11] xfs_scrub: fix queue-and-stash of non-contiguous verify requests Darrick J. Wong
2019-08-26 21:30 ` [PATCH 05/11] xfs_scrub: only call read_verify_force_io once per pool Darrick J. Wong
2019-08-26 21:30 ` [PATCH 06/11] xfs_scrub: refactor inode prefix rendering code Darrick J. Wong
2019-08-26 21:30 ` [PATCH 07/11] xfs_scrub: record disk LBA size Darrick J. Wong
2019-08-26 21:30 ` [PATCH 08/11] xfs_scrub: enforce read verify pool minimum io size Darrick J. Wong
2019-08-26 21:30 ` [PATCH 09/11] xfs_scrub: return bytes verified from a SCSI VERIFY command Darrick J. Wong
2019-08-26 21:30 ` [PATCH 10/11] xfs_scrub: fix read verify disk error handling strategy Darrick J. Wong
2019-08-26 21:31 ` [PATCH 11/11] xfs_scrub: simulate errors in the read-verify phase Darrick J. Wong
2019-09-06 3:37 [PATCH 00/11] xfs_scrub: fix IO error detection during media verify Darrick J. Wong
2019-09-25 21:34 Darrick J. Wong
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