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Tid91

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Registered: 2013-12-01

Posts: 35

Website

[SOLVED] After upgrade and reboot, podman native overlay not working

Hello,
I just upgraded the system, and when I went to restart the rootless containers, I got

Apr 23 23:57:36 podman[4621]: Error: kernel does not support overlay fs: kernel returned unlinkat /home/xxx/.local/share/containers

Installing `fuse-overlayfs` fixes the problem, but I'm pretty sure I did not have to install it and they were working correctly before.

My podman info:

  graphDriverName: overlay
  graphOptions: {}
  graphRoot: /home/xxx/.local/share/containers/storage
  graphRootAllocated: 2170820886528
  graphRootUsed: 5813960704
  graphStatus:
    Backing Filesystem: zfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"

The `Native Overlay Diff` is now false. Any idea what happened?

Linux xxx 6.1.25-1-lts #1 SMP PREEMPT_DYNAMIC Thu, 20 Apr 2023 14:01:39 +0000 x86_64 GNU/Linux

Last edited by Tid91 (2023-05-04 21:36:46)

Tid91

Member

Registered: 2013-12-01

Posts: 35

Website

Re: [SOLVED] After upgrade and reboot, podman native overlay not working

The upload bumped podman to 4.5.0. Reverting to 4.4 makes native overlay work again:

  graphDriverName: overlay
  graphOptions: {}
  graphRoot: /home/xxx/.local/share/containers/storage
  graphRootAllocated: 2170811056128
  graphRootUsed: 5814091776
  graphStatus:
    Backing Filesystem: zfs
    Native Overlay Diff: "true"
    Supports d_type: "true"
    Using metacopy: "false"
  imageCopyTmpDir: /var/tmp

Last edited by Tid91 (2023-04-23 23:10:54)

ac130kz

Member

Registered: 2023-04-26

Posts: 1

Re: [SOLVED] After upgrade and reboot, podman native overlay not working

I rebooted, run `podman system migrate` and purged `fuse-overlayfs`, and only then it showed up properly.

Zfs is weird though (I use ext4):
https://github.com/containers/podman/issues/18315
https://github.com/openzfs/zfs/issues/8648

Tid91

Member

Registered: 2013-12-01

Posts: 35

Website

Re: [SOLVED] After upgrade and reboot, podman native overlay not working

Yep, that's me in the github issue. It seems, since we have zfs < 2.2, we can't use native overlay support, and the fact that before it was working it was a bug.

Last edited by Tid91 (2023-05-04 21:37:10)