Where does `ctr task list` get the list of tasks from?

Question

After upgrading containerd on ubuntu 1.5.9-0ubuntu1~20.04.4 -> 1.5.9-0ubuntu1~20.04.5 I started having weird containerd tasks:

# ctr --namespace k8s.io task ls|grep -i unkn
49f54c1c7bce53a7f73314a9f3c80eaf1534dcc6095ddce29d7f77ac86ac5e02    0        UNKNOWN

see that it is in unknown state.

# ctr --namespace k8s.io container ls |grep 49f54
49f54c1c7bce53a7f73314a9f3c80eaf1534dcc6095ddce29d7f77ac86ac5e02    k8s.gcr.io/pause:3.5

And now syslog every minute reports

containerd[659]: time="2022-11-16T01:11:31.116026891Z" level=error msg="get state for 49f54c1c7bce53a7f73314a9f3c80eaf1534dcc6095ddce29d7f77ac86ac5e02" error="context deadline exceeded: unknown"

It's not removable either

# ctr --namespace k8s.io task rm 49f54c1c7bce53a7f73314a9f3c80eaf1534dcc6095ddce29d7f77ac86ac5e02
ERRO[0014] unable to delete 49f54c1c7bce53a7f73314a9f3c80eaf1534dcc6095ddce29d7f77ac86ac5e02  error="cannot delete a running process: unknown"
ctr: cannot delete a running process: unknown

So my question would be: where does the ctr get the list of tasks from?

score 0 · Accepted Answer · answered Nov 16 '22 at 01:19

0

Okay, I found it to be

/var/lib/containerd/io.containerd.runtime.v2.task/k8s.io

answered Nov 16 '22 at 01:19

zerkms

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but if you delete that path its sill in task ls output – Aref Riant Aug 30 '23 at 07:35
@ArefRiant I don't have a good explanation for that, I remember that it helped to remove in my case. – zerkms Aug 30 '23 at 21:09

Where does `ctr task list` get the list of tasks from?

1 Answers1