mount zfs in LXC container

[arneKlaver]

Hello,

I am trying to mount a zfs pool in a LXC container.
I managed to get it mounted using : pct set vmID -mp0 /poolname/,mp=/mountName
after this I had to fix some permission isues wich I managed to to by doing some group mapping like in this example

/etc/subgid
root:1000:1
root:100000:65536

/etc/subuid
root:100000:65536

/etc/pve/lxc/197.conf
lxc.idmap: u 0 100000 65535
lxc.idmap: g 0 100000 1000
lxc.idmap: g 1000 1000 1
lxc.idmap: g 1001 101001 64534

And this works BUT only for the first directory.
I have permissions in my mount point but once I go further the group is no longer recognized.

proxmox host	LXC ubuntu quest

These locations /dataPool/media /dataPool/backup are zfs filesystems not folder.
Does this have anything to do with it?

 

[arneKlaver]

So I just tried mounting the zfs filesystem (/dataPool/media)
And now I can see all folders inside and eddit them etc. so I have the correct permissions

Is there another way to fix this then to mount every zfs filesystem seperatly?

 

[fiona]

Hi,
when you say you mounted /dataPool/media, do you mean on the host? Is zfs get canmount,mountpoint dataPool/media set to on and the correct mount point? If it is, it should be mounted automatically by zfs mount -a at boot time.

 

[arneKlaver]

no I mean mount to the LXC using : pct set 101 -mp0 /dataPool/media,mp=/media
So once I do this I can see/acces all folders inside /media/
but if I try to go trough my LXC mount of dataPool : pct set 101 -mp0 /dataPool/,mp=/dataPool
I can only access the first folder (/dataPool/) but I can't acces the data in media (/dataPool/media/)

on the host the zfs pool is mounted automatically on /dataPool on every reboot
and on the host I have acces to all my filesystems and folders on the pool.

 

[fiona]

PVE doesn't do recursive bind mounts, so when you mount the dataPool it only mounts that filesystem within the container, including the empty media directory that serves as a mount point, but it doesn't mount the filesystem that is mounted there. So you were already on point in your second post and I fear you'll have to mount each filesystem separately.

Feel free to subscribe to this bug report for updates (there's also an experimental patch available).

 

[arneKlaver]

ok a bit unfortunate but thank you very much for the fast answers