Can't terminate or remove container

[sahostking]

Hi

I'm not sure what has changed but all that was done last on this server was updates.

I am getting this now on new containers it seems:

TASK ERROR: lvremove 'pve/vm-150-disk-1' error: Logical volume pve/vm-150-disk-1 contains a filesystem in use.

How does one sort this out?

 

[sahostking]

I rebooted the server and then could remove them.

 

[BelCloud]

Somehow processes from this container are still running, even if it shows as stopped.

My very RAW solution:

<?php
$lxc_id=917;
$z=shell_exec("ps aux|awk '{print $2}'");
$f=explode("\n",$z);
foreach($f as $k){
$k=trim($k);
if($k<1) continue;
$a=shell_exec("grep lxc\/".$lxc_id."/ /proc/$k/cgroup");
if(!empty($a)) { echo "$k\n"; system("kill -9 $k"); }
}
?>

After that, lvchange -an -v /dev/pve/vm-917-disk-1

There's probably a much better and efficient solution out there, but i didn't know it. There's a need for an efficient way to find processes of a container, from the host.

 

[wbumiller]

You should add another slash after `".$lxc_id."` so killing ct 100 doesn't include 1000 and 10000 ;-).
You can iterate through `/sys/fs/cgroup/pids/lxc/$ctid/**/cgroup.procs` entries as an alternative to go through only the processes of that container, but there's no single collective file for this, you have to walk the cgroup subdirectory tree.

 

[BelCloud]

Thank you !