** Tags added: sts
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https://bugs.launchpad.net/bugs/1848739
Title:
[linux-azure] Patch to prevent possible data corruption
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** Also affects: linux-azure (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-azure (Ubuntu Bionic)
Status: New => Invalid
** Changed in: linux (Ubuntu Bionic)
Status: New =>
We had similar behavior on GCE by running Elasticsearch through the following
suite of unit tests:
https://github.com/elastic/rally-eventdata-track
The test suite takes about 5 days to run fully and any corruption can be found
by running:
zgrep CorruptIndexException /var/log/elasticsearch/elasti
Test kernel for xenial:linux-gcp available at:
https://kernel.ubuntu.com/~mhcerri/gcp/lp1848739/linux-
gcp-4.15.0-1051.54+lp1848739.tar.gz
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Title:
Would it be worth it to include the changes into Ubuntu generic kernel
and derivative Ubuntu kernels as well ?
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Title:
[linux-azure] Patch to pre
** Changed in: linux-azure (Ubuntu Xenial)
Status: In Progress => Fix Committed
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Title:
[linux-azure] Patch to prevent possible data corru
https://lists.ubuntu.com/archives/kernel-team/2019-November/105876.html
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Title:
[linux-azure] Patch to prevent possible data corruption
To manag
** Also affects: linux-azure (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux-azure (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux-azure (Ubuntu Xenial)
Assignee: (unassigned) => Marcelo Cerri (mhcerri)
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For reference, this is the extensive upstream kernel discussion
https://bugzilla.kernel.org/show_bug.cgi?id=201685
The filesystem corruption issue is real, not theoretical, and
was the extensive discussion of problems experienced during the early days of
4.19:
** Bug watch added: Linux Kernel
This data corruption issue was written about extensively here
https://lwn.net/Articles/774440/
as part of the early 4.19 days when a number of folks were seeing ext4
filesystem corruption as a consequence of the blk-mq bug.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-azure (Ubuntu)
Status: New => Confirmed
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Title:
Yes we need that patch. The commit description is misleading, as this
commit actually fixes a bug on data corruption for SCSI devices.
In the latest Ubuntu 4.15 kernel, __blk_mq_try_issue_directly() (in
"block/blk-mq.c") calls blk_mq_sched_insert_request() if
q->mq_ops->queue_rq() returns BLK_STS_
Commit c616cbee97ae fixes ffe81d45322c ("blk-mq: fix corruption with
direct issue") that is not present. Are you sure c616cbee97ae is really
need in xenial:linux-azure?
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