[linux-lvm] lvm commands hanging when run from inside a kubernetes pod

[Abhishek Agarwal]

Hey Demi, can you explain how it will help to solve the problem? I'm
actually not aware of that much low-level stuff but would like to learn
about it. Also, can you provide a few references for it on how I can use it?

Thanks

On Mon, 6 Jun 2022 at 12:32, Demi Marie Obenour <demi at invisiblethingslab.com>
wrote:

> On Mon, Jun 06, 2022 at 11:19:47AM +0530, Abhishek Agarwal wrote:
> > 1. Yes, use_lvmetad is 0, and its systemd units for it are
> stopped/disabled.
> > 2. Yes, everything on the host machine i.e(/proc, /sys etc) are getting
> > mounted on the pod.
> >
> > *ubuntu at ip-172-31-89-47*:*~*$ kubectl exec -it openebs-lvm-node-v6jrb -c
> > openebs-lvm-plugin  -n kube-system -- sh
> >
> > # ls
> >
> > bin  boot  dev etc  home  host  lib  lib32  lib64  libx32  media  mnt opt
> > plugin  proc  root  run  sbin  srv  sys  tmp  usr var
> >
> > # cd /host
> >
> > # ls
> >
> > bin  boot  dev etc  home  lib lib32  lib64  libx32  lost+found  media
> mnt
> > opt  proc  root  run  sbin  snap srv  sys  tmp  usr  var
> >
> > #
> > 3. The detail output of `strace -f -ttt` command:
> > https://pastebin.com/raw/VFyXLNaC
>
> I suggest bind-mounting the host’s D-Bus socket into the container and
> using systemd’s D-Bus API to run the LVM commands on the host.  This
> will avoid the problems you are having.
> --
> Sincerely,
> Demi Marie Obenour (she/her/hers)
> Invisible Things Lab
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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