** Changed in: zfs-linux (Ubuntu Mantic)
Status: Incomplete => In Progress
** Changed in: zfs-linux (Ubuntu Jammy)
Status: Confirmed => In Progress
** Changed in: zfs-linux (Ubuntu Focal)
Status: Confirmed => In Progress
** Changed in: zfs-linux (Ubuntu Lunar)
Assignee: Dimitri John Ledkov (xnox) => (unassigned)
** Changed in: zfs-linux (Ubuntu Focal)
Assignee: (unassigned) => Dimitri John Ledkov (xnox)
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Packages, which is subscribed to zfs-linux in Ubuntu.
https://bugs.launchpad.net/bugs/2044657
Title:
Multiple data corruption issues in zfs
Status in zfs-linux package in Ubuntu:
Fix Released
Status in zfs-linux source package in Xenial:
Confirmed
Status in zfs-linux source package in Bionic:
Confirmed
Status in zfs-linux source package in Focal:
In Progress
Status in zfs-linux source package in Jammy:
In Progress
Status in zfs-linux source package in Lunar:
Won't Fix
Status in zfs-linux source package in Mantic:
In Progress
Status in zfs-linux source package in Noble:
Fix Released
Bug description:
[ Impact ]
* Multiple data corruption issues have been identified and fixed in
ZFS. Some of them, at varying real-life reproducibility frequency have
been deterimed to affect very old zfs releases. Recommendation is to
upgrade to 2.2.2 or 2.1.14 or backport dnat patch alone. This is to
ensure users get other potentially related fixes and runtime tunables
to possibly mitigate other bugs that are related and are being fixed
upstream for future releases.
* For jammy the 2.1.14 upgrade will bring HWE kernel support and also
compatiblity/support for hardened kernel builds that mitigate SLS
(straight-line-speculation).
* In the absence of the upgrade a cherry-pick will address this
particular popular issue alone - without addressing other issues
w.r.t. Redbleed / SLS, bugfixes around trim support, and other related
improvements that were discovered and fixed around the same time as
this popular issue.
[ Test Plan ]
* !!! Danger !!! use reproducer from
https://zfsonlinux.topicbox.com/groups/zfs-discuss/T12876116b8607cdb
and confirm if that issue is resolved or not. Do not run on production
ZFS pools / systems.
* autopkgtest pass (from https://ubuntu-archive-
team.ubuntu.com/proposed-migration/ )
* adt-matrix pass (from https://kernel.ubuntu.com/adt-matrix/ )
* kernel regression zfs testsuite pass (from Kernel team RT test
results summary, private)
* zsys integration test pass (upgrade of zsys installed systems for
all releases)
* zsys install test pass (for daily images of LTS releases only that
have such installer support, as per iso tracker test case)
* LXD (ping LXD team to upgrade vendored in tooling to 2.2.2 and
2.1.14, and test LXD on these updated kernels)
[ Where problems could occur ]
* Upgrade to 2.1.14 on jammy with SLS mitigations compatiblity will
introduce slight slow down on amd64 (for hw accelerated assembly code-
paths only in the encryption primitives)
* Uncertain of the perfomance impact of the extra checks in dnat
patch fix itself. Possibly affecting speed of operation, at the
benefit of correctness.
[ Other Info ]
* https://github.com/openzfs/zfs/pull/15571 is most current
consideration of affairs
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