** Changed in: linux-hwe-5.13 (Ubuntu)
Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)
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https://bugs.launchpad.net/bugs/1960324
Title:
[VROC] Kernel does not contain fixes for iostat for md devices
Status in linux-hwe-5.13 package in Ubuntu:
New
Bug description:
Hello,
I noticed that kernel which was used in ubuntu 22.04 (hwe-5.13) does
not contain fixes for IO statistics for md devices. IO statistics for
md devices were added to kernel 5.10
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=41d2d848e5c09209bdb57ff9c0ca34075e22783d)
but then bug for double fault was reported and this patch was reverted
by Guoqing Jiang
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad3fc798800fb7ca04c1dfc439dba946818048d8).
Guoqing Jiang added series of patches which fixes problem and adds IO stats
for md devices on top on the revert patch:
- first commit from series: 10764815ff4728d2c57da677cd5d3dd6f446cf5f
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=10764815ff4728d2c57da677cd5d3dd6f446cf5f)
- last one: de3ea66e9d23a34eef5e17f960d6473f78a1c54b
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=de3ea66e9d23a34eef5e17f960d6473f78a1c54b)
I checked that kernel used in ubuntu 22.04 contains only patch with revert -
iostat does not report for md devices
(https://kernel.ubuntu.com/git/ubuntu/ubuntu-focal.git/log/?h=hwe-5.13&qt=author&q=Guoqing+Jiang)
Please consider adding series of patches described above.
Regards,
Kinga Tanska
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