Public bug reported:
Hi,
I'm still investigating but, am a bit stuck. Here's what I've found so
far.
Today I've upgraded some nodes in AWS EC2 from the previous v5.15 linux-
aws package to the recently pusblished v5.19 package and rebooted. It
seems that even when there's disk activity, the files:
/sys/fs/cgroup/blkio/blkio.throttle.io_serviced
/sys/fs/cgroup/blkio/blkio.throttle.io_service_bytes
Are only ever populated with 0's. Prior on v5.15 these would reflect the
actual disk usage. No other system configuration changes were applied
just the kernel upgrade and reboot. I've also verified that simply
rebooting a v5.15 where this does work doesn't break the reporting.
These EC2 instances are running with cgroups v1 due to other
compatability issues and I suspect that might be the issue. So far, I
cannot find any differences. mtab shows the same v1 mount setup, the
kernel options match betwen v5.15 and v5.19.
I'm more than happy to fetch whatever info would help out here. I'd love
to get 5.19 working for us but, we really need the data from these
files.
Info:
Prior version that works: Linux ip-10-128-168-154 5.15.0-1031-aws #35-Ubuntu
SMP Fri Feb 10 02:07:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Upgraded version that's broken: Linux ip-10-128-166-219 5.19.0-1022-aws
#23~22.04.1-Ubuntu SMP Fri Mar 17 15:38:24 UTC 2023 x86_64 x86_64 x86_64
GNU/Linux
EC2 instances built off of the published 22.04 LTS AMI in us-east-1.
** Affects: linux-aws (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Hi,
I'm still investigating but, am a bit stuck. Here's what I've found so
far.
Today I've upgraded some nodes in AWS EC2 from the previous v5.15 linux-
aws package to the recently pusblished v5.19 package and rebooted. It
seems that even when there's disk activity, the files:
/sys/fs/cgroup/blkio/blkio.throttle.io_serviced
/sys/fs/cgroup/blkio/blkio.throttle.io_service_bytes
Are only ever populated with 0's. Prior on v5.15 these would reflect the
actual disk usage. No other system configuration changes were applied
just the kernel upgrade and reboot. I've also verified that simply
rebooting a v5.15 where this does work doesn't break the reporting.
These EC2 instances are running with cgroups v1 due to other
compatability issues and I suspect that might be the issue. So far, I
cannot find any differences. mtab shows the same v1 mount setup, the
kernel options match betwen v5.15 and v5.19.
I'm more than happy to fetch whatever info would help out here. I'd love
to get 5.19 working for us but, we really need the data from these
files.
+
+ Info:
+ Prior version that works: Linux ip-10-128-168-154 5.15.0-1031-aws #35-Ubuntu
SMP Fri Feb 10 02:07:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
+ Upgraded version that's broken: Linux ip-10-128-166-219 5.19.0-1022-aws
#23~22.04.1-Ubuntu SMP Fri Mar 17 15:38:24 UTC 2023 x86_64 x86_64 x86_64
GNU/Linux
+
+ EC2 instances built off of the published 22.04 LTS AMI in us-east-1.
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-aws in Ubuntu.
https://bugs.launchpad.net/bugs/2016186
Title:
5.19 not reporting cgroups v1 blkio.throttle.io_serviced
Status in linux-aws package in Ubuntu:
New
Bug description:
Hi,
I'm still investigating but, am a bit stuck. Here's what I've found so
far.
Today I've upgraded some nodes in AWS EC2 from the previous v5.15
linux-aws package to the recently pusblished v5.19 package and
rebooted. It seems that even when there's disk activity, the files:
/sys/fs/cgroup/blkio/blkio.throttle.io_serviced
/sys/fs/cgroup/blkio/blkio.throttle.io_service_bytes
Are only ever populated with 0's. Prior on v5.15 these would reflect
the actual disk usage. No other system configuration changes were
applied just the kernel upgrade and reboot. I've also verified that
simply rebooting a v5.15 where this does work doesn't break the
reporting. These EC2 instances are running with cgroups v1 due to
other compatability issues and I suspect that might be the issue. So
far, I cannot find any differences. mtab shows the same v1 mount
setup, the kernel options match betwen v5.15 and v5.19.
I'm more than happy to fetch whatever info would help out here. I'd
love to get 5.19 working for us but, we really need the data from
these files.
Info:
Prior version that works: Linux ip-10-128-168-154 5.15.0-1031-aws #35-Ubuntu
SMP Fri Feb 10 02:07:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Upgraded version that's broken: Linux ip-10-128-166-219 5.19.0-1022-aws
#23~22.04.1-Ubuntu SMP Fri Mar 17 15:38:24 UTC 2023 x86_64 x86_64 x86_64
GNU/Linux
EC2 instances built off of the published 22.04 LTS AMI in us-east-1.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/2016186/+subscriptions
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