[Bug 1960324] Re: [VROC] Kernel does not contain fixes for iostat for md devices

Hi @kamalmostafa,

Just to make sure, because task has "in progress" state. Was this fix
included into 5.13 kernel used in Ubuntu 22.04? Or will be included in
next releases?

Regards,
Kinga Tanska

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/1960324

Title:
[VROC] Kernel does not contain fixes for iostat for md devices

Status in linux package in Ubuntu:
Invalid
Status in linux-hwe-5.13 package in Ubuntu:
In Progress
Status in linux source package in Focal:
Invalid
Status in linux-hwe-5.13 source package in Focal:
In Progress
Status in linux source package in Impish:
In Progress
Status in linux-hwe-5.13 source package in Impish:
Invalid

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1960324/+subscriptions