[lxc-users] LXD move container to another pool ?

[Pierre Couderc]

Thank you very much, I think this is the good way !


On 08/09/2018 11:30 AM, Fajar A. Nugraha wrote:
> On Thu, Aug 9, 2018 at 4:11 PM, Pierre Couderc <pierre at couderc.eu 
> <mailto:pierre at couderc.eu>> wrote:
>
>     I want to "format"  my LXD  computer   :
>
>     So I would like to  :
>
>     - create a LXD storage on an auxiliary (btrfs) disk, something
>     like : lxd storage create mytmp btrfs
>     source=/mnt/my_btrfs_unit/lxd_subvolume (is this possible ?)
>
>     - move my contianer to this new storage . How ?
>
>     - fulley reinstall my server and LXD
>
>     - "attach" my /mnt/my_btrfs_unit/lxd_subvolume to new LXD (how ?)
>
>     - move back my container
>
>     - detach and remove my tmp subvolume
>
>
>     If it was on another computer it would be a simple "move"...
>
>
> So basically you just want to backup and restore the complete lxd 
> setup? What are you currently using?
>
> Basically you'd just need to copy /var/lib/lxd and whatever storage 
> backend you use (I use zfs), and then copy them back later. Since I 
> also put /var/lib/lxd on zfs (this is a custom setup), I simply need 
> to export-import my pool.
>
> If you currently use the default zfs-on-loopback backend, you simply 
> need to copy /var/lib/lxd and the loopback file (I don't remember the 
> name offhand). If you use btrfs, then the easiest way is to detach the 
> disk before formatting the pool (plus copy /var/lib/lxd, obviously).
>
> "Moving" a container to a new storage is, AFAIK, a more complicated 
> process. The only way I know of is basically create a container on 
> that new pool, and overwrite the content of its rootfs. I don't 
> recommend this for your particular needs.
>
> -- 
> Fajar
>
>
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