[one-users] mkswap operation failed

[Javier Fontan]

The relabeling of the swap partition can be a warning if you are going
to manually mount the swap. In case you are using the
contextualization packages the label is needed to identiy the swap
partition [1].

Maybe we can do the labeling of the swap partition in another command
and just disregard the error. The problem is that the user won't have
the VM he asked for and no message is given back to the user.

That error is most probably given by SElinux. I'm not sure how to
solve that without disabling it.

Cheers

[1] https://github.com/OpenNebula/one/blob/master/share/scripts/context-packages/base/etc/one-context.d/04-mount-swap

On Wed, Apr 30, 2014 at 3:08 PM, Dmitri Chebotarov <dchebota at gmu.edu> wrote:
> Hi
>
> I'm running ONE 4.2.
> Hosts are CentOS 6.5 /w selinux enabled.
>
> Few VMs are using SWAP disk, ie. DISK=[SIZE="2048",TYPE="swap",DEV_PREFIX="vd",FORMAT="raw"].
> For those VMs I get the error when trying deploy:
> (it works OK with selinux=disabled)
>
> Wed Apr 30 00:50:52 2014 [DiM][I]: New VM state is ACTIVE.
> Wed Apr 30 00:50:52 2014 [LCM][I]: New VM state is PROLOG.
> Wed Apr 30 00:50:52 2014 [VM][I]: Virtual Machine has no context
> Wed Apr 30 00:50:53 2014 [TM][I]: Command execution fail: /var/lib/one/remotes/tm/shared/mkswap 2048 BC2-3:/var/lib/one//datastores/111/33080/disk.1 33080 111
> Wed Apr 30 00:50:53 2014 [TM][I]: mkimage: Making filesystem of 2048M and type swap at BC2-3:/var/lib/one//datastores/111/33080/disk.1
> Wed Apr 30 00:50:53 2014 [TM][E]: mkimage: Command "export PATH=/usr/sbin:/sbin:$PATH
> Wed Apr 30 00:50:53 2014 [TM][I]: dd if=/dev/zero of=/var/lib/one/datastores/111/33080/disk.1 bs=1 count=1 seek=2048M
> Wed Apr 30 00:50:53 2014 [TM][I]: mkswap -L swap /var/lib/one/datastores/111/33080/disk.1" failed: 1+0 records in
> Wed Apr 30 00:50:53 2014 [TM][I]: 1+0 records out
> Wed Apr 30 00:50:53 2014 [TM][I]: 1 byte (1 B) copied, 0.00126622 s, 0.8 kB/s
> Wed Apr 30 00:50:53 2014 [TM][I]: mkswap: unable to relabel /var/lib/one/datastores/111/33080/disk.1 to system_u:object_r:swapfile_t:s0: Operation not supported
> Wed Apr 30 00:50:53 2014 [TM][E]: Could not create image /var/lib/one/datastores/111/33080/disk.1
> Wed Apr 30 00:50:53 2014 [TM][I]: ExitCode: 1
> Wed Apr 30 00:50:53 2014 [TM][E]: Error executing image transfer script: Could not create image /var/lib/one/datastores/111/33080/disk.1
> Wed Apr 30 00:50:53 2014 [DiM][I]: New VM state is FAILED
> Wed Apr 30 00:50:53 2014 [DiM][I]: New VM state is CLEANUP.
>
> I ran the same commands manually on the same host and get the same error, but swap created OK anyway:
>
> [oneadmin at BC2-3 ~]$ dd if=/dev/zero of=/var/lib/one/datastores/111/delete.swap bs=1 count=1 seek=2048M
> 1+0 records in
> 1+0 records out
> 1 byte (1 B) copied, 0.00120218 s, 0.8 kB/s
>
> [oneadmin at BC2-3 ~]$ file /var/lib/one/datastores/111/delete.swap
> /var/lib/one/datastores/111/delete.swap: data
>
> [oneadmin at BC2-3 ~]$ mkswap -L swap /var/lib/one/datastores/111/delete.swap
> mkswap: /var/lib/one/datastores/111/delete.swap: warning: don't erase bootbits sectors
>         on whole disk. Use -f to force.
> Setting up swapspace version 1, size = 2097148 KiB
> LABEL=swap, UUID=fa3e4e9b-1701-4e8f-a62f-df1d77f50441
> mkswap: unable to relabel /var/lib/one/datastores/111/delete.swap to system_u:object_r:swapfile_t:s0: Operation not supported
>
> [oneadmin at BC2-3 ~]$ file /var/lib/one/datastores/111/delete.swap
> /var/lib/one/datastores/111/delete.swap: Linux/i386 swap file (new style) 1 (4K pages) size 524287 pages Label swap
>
> Looks like the message about "unable to relabel" is a warning, not error, and it would be OK to continue boot process for the VM.
> --
> Thank you,
>
> Dmitri Chebotarov
> VCL Sys Eng, Engineering & Architectural Support, TSD - Ent Servers & Messaging
> 223 Aquia Building, Ffx, MSN: 1B5
> Phone: (703) 993-6175 | Fax: (703) 993-3404
>
>
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-- 
Javier Fontán Muiños
Developer
OpenNebula - The Open Source Toolkit for Data Center Virtualization
www.OpenNebula.org | @OpenNebula | github.com/jfontan