Hallo,

So I had an opportunity to try it out, on the very sad reason....

I was running development in rootless container  and was rsyncing
my whole home directory to nas, including podman storage directory
(~/.local/share/containers). At some point my container was lost
and I decided to restore it from the backup. I unmounted
~/.local/share/containers (it's on a separate fs) and bind mounted
this directory from nas instead. podman images command worked without
problems, but podman ps -a gave the following error:

  podman ps -a
  ERRO[0000] Joining network namespace for container ba61c9037d87a02a9b8781b0abd9b4ce036df3918f25ec107d69f4a40af772d0: error retrieving network namespace at /run/user/1007/netns/netns-38f7b6f9-58b5-2c65-057f-7a9abf783823: failed to Statfs "/run/user/1007/netns/netns-38f7b6f9-58b5-2c65-057f-7a9abf783823": no such file or directory 
  Error: error joining network namespace of container ba61c9037d87a02a9b8781b0abd9b4ce036df3918f25ec107d69f4a40af772d0: error retrieving network namespace at /run/user/1007/netns/netns-38f7b6f9-58b5-2c65-057f-7a9abf783823: failed to Statfs "/run/user/1007/netns/netns-38f7b6f9-58b5-2c65-057f-7a9abf783823": no such file or directory

So is simple rsync not proper way to backup my containers? Do I still
need some specific procedure for backup?

Btw my original container was lost also under some strange circumstances:
at some point I decided to free up some storage under containers directory.
I had quite a few of leftower stuff from several buildah runs so I just
executed buildah rm --all. After that my running container became unusable,
I could not exec into it and container export or commit commands failed.
When I checked the output of buildah rm command I discovered that last id
in the list of removed containers reported by buildah, was same as the one
of my container! How could that happen? I have a lot of other containers,
which were not affected.

Best regards,

On 1/28/22 15:12, Michael Ivanov wrote:

Greetings,

I make periodic backups of my laptop where I use some podman containers.
To perform a backup I just invoke rsync to copy my /home/xxxx/.local/share/containers
directory to nfs mounted filesystem.
Containers are running, but quiescent, no real activity occurs.

Is this a correct way to back up or is there anything special about
container directory to be taken into account? As far as I understand
some hash-named subdirectories are shared between different containers
and images using special kind of mounts, can this lead to duplicate
copies r inconsistencies?

Underlying fs is btrfs.

Thanks,

I believe this should work fine.
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