[Lxc-users] Moving an lxc container from one host to another . . .

[Masood Mortazavi]

No worries :-)

I understand that lxc rootfs is sacred . . . :-)

This was just a question about how to archive and move an lxc container.

I wrote my note because I've made a mistake -- in my haste, un-packing one
place and then using cp to the lxc container site.

Regards,
Masood

On Thu, Feb 28, 2013 at 12:32 AM, Nuno Seita[EmergeIT] <nuno.seita at emerge.pt
> wrote:

>  Hi Masood,
>
> dont cp files around, just use tar with -C /final/destination/directory,
> that way your telling tar where to unpack.
>
> Hope it helps,
>
> Regards
>
>  On 27-02-2013 19:12, Masood Mortazavi wrote:
>
> Hi Miroslav,
>
> Thank you very much. This worked.
>
> However, on the way, I discovered one other relevant point worth noting:
>
> When unpacking the tar of the lxc, it should be unpacked with
>
>     tar --numeric-owner -xzvf lxc.tgz
>
> into its *final* destination (i.e. to the final resting place of all lxc's
> on the machine).
>
> Use of Linux "cp" to move the unpacked lxc to the final destination fails.
>
> Obviously "cp" doesn't have a "--numeric owner" option.
>
> Also, I observed that on my system I carried out all these steps as a
> sudo-er.
>
> Best regards,
> Masood
>
>  On Tue, Feb 26, 2013 at 11:34 PM, Miroslav Lednicky <
> miroslav.lednicky at fnusa.cz> wrote:
>
>> Hello,
>>
>>         You must use tar with option --numeric-owner
>>
>> for example:
>>
>> tar --numeric-owner -czvf lxc.tgz /lxc/my_lxc
>>
>> Best regards,
>>
>> Miroslav.
>>
>> Dne 27.2.2013 00:38, Masood Mortazavi napsal(a):
>>  > What is the best way to move an lxc container form one host to
>> another?
>> > On ubuntu, a simple tar of the container files, move and copy, doesn't
>> > seem to work properly or reconstitute a container on the target host
>> > with proper settings.
>> > Man pages give very little information on this.  (I can speculate that
>> > one way is to create a specific template. However, it would be nice to
>> > have an easier way / trick.)
>> > - m.
>> >
>> >
>>   >
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>>
>> --
>> Miroslav Lednický,
>> Fakultní nemocnice u sv. Anny v Brně
>>
>>
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>
>
>
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>
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