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util: support systems using the new cgroup v2 structure #3091

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merged 1 commit into from
May 7, 2022

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Cytrian
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@Cytrian Cytrian commented May 5, 2022

With cgroup v2, the location of the pids.max file changed and so did the /proc/self/cgroup file

New /proc/self/cgroup file has only one line:

0::/user.slice/user-500.slice/session-14.scope

While the old file had a subsystem given for each line:

11:pids:/user.slice/user-500.slice/session-2.scope
10:blkio:/user.slice
9:net_cls,net_prio:/
8:perf_event:/
...

There is no directory per subsystem (e.g. /sys/fs/cgroup/pids) any more, all files are now in one directory.

Related issues

Fixes: #3085

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Madhu-1 commented May 5, 2022

@Cytrian Thanks for the PR can you please fix DCO and commitlint problem. Please refer DOC doc and commit message doc for help

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changes LGTM. waiting to fix DCO and commitlint

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Please update the subject of the commit to have the right prefix, something like util: .... Lines in the commit message should not be longer than 80 characters.

We also require a Signed-off-by: line in the commit message (use git commit --amend -s).

If you make these changes, commitlint and DCO checks are expected to pass.

Thanks for your contribution, let us know if you need more assistance!

internal/util/pidlimit.go Outdated Show resolved Hide resolved
@Cytrian Cytrian changed the title Support systems using the new cgroup v2 structure util: support systems using the new cgroup v2 structure May 5, 2022
@Madhu-1 Madhu-1 requested a review from nixpanic May 5, 2022 10:24
@Madhu-1 Madhu-1 added the component/util Utility functions shared between CephFS and RBD label May 5, 2022
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nixpanic commented May 5, 2022

/retest ci/centos/mini-e2e-helm/k8s-1.22

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nixpanic commented May 5, 2022

/retest ci/centos/mini-e2e-helm/k8s-1.22

Spurious failure:

May  5 13:31:12.860: FAIL: backend images not matching kubernetes resource count,image count 24 kubernetes resource count 21

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humblec commented May 6, 2022

@nixpanic iic, the requested changes are addressed in latest refresh of the patch.. may be remove the change requested?

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nixpanic commented May 7, 2022

/retest ci/centos/mini-e2e-helm/k8s-1.22

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nixpanic commented May 7, 2022

/retest ci/centos/mini-e2e-helm/k8s-1.22

Failed with:

May  5 17:10:11.482: backend images not matching kubernetes resource count,image count 23 kubernetes resource count 21

With cgroup v2, the location of the pids.max file changed and so did the
/proc/self/cgroup file

new /proc/self/cgroup file
`
0::/user.slice/user-500.slice/session-14.scope
`

old file:
`
11:pids:/user.slice/user-500.slice/session-2.scope
10:blkio:/user.slice
9:net_cls,net_prio:/
8:perf_event:/
...
`

There is no directory per subsystem (e.g. /sys/fs/cgroup/pids) any more, all
files are now in one directory.

fixes: ceph#3085

Signed-off-by: Marcus Röder <m.roeder@yieldlab.de>
@nixpanic nixpanic added the ci/retry/e2e Label to retry e2e retesting on approved PR's label May 7, 2022
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/retest ci/centos/mini-e2e/k8s-1.22

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@Cytrian "ci/centos/mini-e2e/k8s-1.22" test failed. Logs are available at location for debugging

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@Mergifyio requeue

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mergify bot commented May 7, 2022

requeue

✅ The queue state of this pull request has been cleaned. It can be re-embarked automatically

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/retest ci/centos/mini-e2e-helm/k8s-1.22

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@Cytrian "ci/centos/mini-e2e-helm/k8s-1.22" test failed. Logs are available at location for debugging

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@Mergifyio requeue

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mergify bot commented May 7, 2022

requeue

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/retest ci/centos/mini-e2e-helm/k8s-1.21

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@Cytrian "ci/centos/mini-e2e-helm/k8s-1.21" test failed. Logs are available at location for debugging

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/retest ci/centos/mini-e2e-helm/k8s-1.22

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@Cytrian "ci/centos/mini-e2e-helm/k8s-1.22" test failed. Logs are available at location for debugging

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@Mergifyio requeue

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mergify bot commented May 7, 2022

requeue

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/retest ci/centos/mini-e2e-helm/k8s-1.22

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@Cytrian "ci/centos/mini-e2e-helm/k8s-1.22" test failed. Logs are available at location for debugging

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@Mergifyio requeue

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mergify bot commented May 7, 2022

requeue

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/retest ci/centos/mini-e2e-helm/k8s-1.21

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@Cytrian "ci/centos/mini-e2e-helm/k8s-1.21" test failed. Logs are available at location for debugging

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@Mergifyio requeue

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mergify bot commented May 7, 2022

requeue

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setting pids.max failed with cgroups v2
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