Amit Uttamchandani <amit.ut...@gmail.com>
writes:
> I'm just wondering what the best way is to move an lxc container? Can
> I just tar the root filesystem and untar it on another system? Or
> should I rsync it over?
If you use tar, make sure to pass --numeric-owner, ESPECIALLY if the
container is RH-derived and the host is Debian-derived (or vice-versa).
Otherwise things MOSTLY work except you get a few really strange
behaviours, and you eventually track it down and realize that the untar
operation changed UIDs to match the new dom0, e.g. the container sees
-rwsr-xr-- 1 root cups 48112 Feb 18 07:18
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
instead of
-rwsr-xr-- 1 root messagebug 48112 Feb 18 07:18
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
> I understand that before doing any of the above, the container should be
> shutdown first. However, is there a way to do this while the container
> is running?
Safely? Not without the Checkpoint/Restart stuff that's being worked on
elsewhere, I think.
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