cgroup2: Manager.Delete: handle both "threaded" and "domain threaded" #358
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commit 6f5001d added special handling for threaded cgroup types. A later contribution added detection for "domain threaded" as known type, but did not update the handling to detect this type. From the original PR; > Reading cgroup.procs seems to return ENOTSUPP when threaded, so check > the type of the cg when going to delete and read the relevant file. An alternative could be to check both variants unconditionally, and to error if either Manager.Threads or Manager.Procs is non-zero. Signed-off-by: Sebastiaan van Stijn <[email protected]>
thaJeztah
commented
Dec 10, 2024
Comment on lines
+488
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| case Threaded, DomainThreaded: | ||
| tasks, err = c.Threads(true) | ||
| } else { | ||
| default: | ||
| tasks, err = c.Procs(true) |
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Alternative could be to just to try either if we get anything in return?
if tasks, _ := c.Threads(true); len(tasks) > 0 {
return fmt.Errorf("cgroups: unable to remove path %q: still contains running tasks", c.path)
}
if tasks, _ := c.Procs(true); len(tasks) > 0 {
return fmt.Errorf("cgroups: unable to remove path %q: still contains running tasks", c.path)
}There was a problem hiding this comment.
oh, not sure if that makes sense. Looking at Procs and Threads, they both call getTasks under the hood; if the above does make sense, I guess that function could possibly accept both cgroupProcs and cgroupThreads to get "any".
2 tasks
dcantah
approved these changes
Dec 15, 2024
fuweid
approved these changes
Dec 17, 2024
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commit 6f5001d added special handling for threaded cgroup types. A later contribution added detection for "domain threaded" as known type, but did not update the handling to detect this type.
From the original PR;
An alternative could be to check both variants unconditionally, and to error if either Manager.Threads or Manager.Procs is non-zero.