[PVE-User] converting privileged CT to unprivileged

[Adam Weremczuk]

I've found config file in the archive under etc/vzdump/pct.conf and it 
looks ok at first glance.

Still getting an error on restore:
unable to restore CT 100 - ERROR: archive contains no configuration file

Rerunning the restore has also deleted recently re-crafted by hand 
/etc/pve/nodes/node1/lxc/100.conf :(


On 01/08/19 15:45, Adam Weremczuk wrote:
> Hi all,
>
> The urandom/random problem solved itself on decompressing:
>
> sudo lzop -d -c vzdump-lxc-100-2019_07_31-16_15_48.tar.lzo | tar xvf - 
> > /var/tmp/lxc-100.log
> tar: ./var/spool/postfix/dev/urandom: Cannot mknod: Operation not 
> permitted
> tar: ./var/spool/postfix/dev/random: Cannot mknod: Operation not 
> permitted
> tar: Exiting with failure status due to previous errors
>
> I'm now facing a different problem. 100.conf file has vanished even 
> though I can't recall invoking deletion form either GUI or shell:
>
> pct restore 100 
> /var/lib/vz/dump/vzdump-lxc-100-2019_07_31-16_15_49.tar.lzo 
> -ignore-unpack-errors 1 -unprivileged -force -storage my-zfs-pool
> unable to restore CT 100 - ERROR: archive contains no configuration file
>
> I think I can fairly easily recover by making a config copy of a 
> similar CT and editing it by hand.
>
> What's the best way of determining the right MAC address to use 
> (hwaddr=...)?
> I'm pretty sure all ARP caches have flushed this entry by now.
> Any chance this info is still stored somewhere?
> Create a new dummy CT and use that MAC address?
>
> Thanks,
> Adam
>
>
> On 31/07/19 16:39, Gilberto Nunes wrote:
>> You can uncompress the backup for any other directory, delete urandom
>> and random and then, compress again the whole directory...
>> Then try restore into PVE again.
>>
>> ---
>> Gilberto Nunes Ferreira
>>
>> (47) 3025-5907
>> (47) 99676-7530 - Whatsapp / Telegram
>>
>> Skype: gilberto.nunes36
>>
>>
>>
>>
>> Em qua, 31 de jul de 2019 às 12:37, Adam Weremczuk
>> <adamw at matrixscience.com> escreveu:
>>> Hi all,
>>>
>>> PVE 5.4.6.
>>>
>>> My container was created as privileged and runs on zfs pool shared by 2
>>> hosts.
>>>
>>> I've unsuccessfully tried to convert it from GUI:
>>> - stopped the container
>>> - took a backup
>>> - clicked "restore" ("unprivileged" ticked - default)
>>>
>>> extracting archive
>>> '/var/lib/vz/dump/vzdump-lxc-100-2019_07_31-16_15_48.tar.lzo'
>>> tar: ./var/spool/postfix/dev/urandom: Cannot mknod: Operation not 
>>> permitted
>>> tar: ./var/spool/postfix/dev/random: Cannot mknod: Operation not 
>>> permitted
>>> Total bytes read: 619950080 (592MiB, 42MiB/s)
>>> tar: Exiting with failure status due to previous errors
>>> TASK ERROR: unable to restore CT 100 - command 'lxc-usernsexec -m
>>> u:0:100000:65536 -m g:0:100000:65536 -- tar xpf - --lzop --totals
>>> --one-file-system -p --sparse --numeric-owner --acls --xattrs
>>> '--xattrs-include=user.*' '--xattrs-include=security.capability'
>>> '--warning=no-file-ignored' '--warning=no-xattr-write' -C
>>> /var/lib/lxc/100/rootfs --skip-old-files --anchored --exclude 
>>> './dev/*''
>>> failed: exit code 2
>>>
>>> CT 100 completely disappeared from the list!
>>>
>>> Earlier attempt from shell (105 was the first available ID):
>>>
>>> pct restore 105
>>> /var/lib/vz/dump/vzdump-lxc-100-2019_07_31-16_15_48.tar.lzo
>>> -ignore-unpack-errors 1 -unprivileged
>>> 400 Parameter verification failed.
>>> storage: storage 'local' does not support container directories
>>> pct restore <vmid> <ostemplate> [OPTIONS]
>>>
>>> Any hints?
>>>
>>> Thanks,
>>> Adam
>>>
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