[rhos-list] launch instance and create volume issues

[Darren Birkett]

Did you reboot the machine?  The loopback setup will not persist a reboot.

Run the following again:

sudo losetup -fv ~/nova-volumes
sudo vgcreate nova-volumes /dev/loop0

and then try creating a volume again.




On 14 September 2012 15:56, Xu, HongnaX <hongnax.xu at intel.com> wrote:
> the volume.log said:
> 2012-09-14 21:48:15 AUDIT nova.service [-] Starting volume node (version 2012.1.1-LOCALBRANCH:LOCALREVISION)
> 2012-09-14 21:48:15 CRITICAL nova [-] volume group nova-volumes doesn't exist
>
> My steps are:
> $sudo truncate --size 20G ~/nova-volumes
> $ sudo losetup -fv ~/nova-volumes
> $sudo vgcreate nova-volumes /dev/loop0
> *********************
>  No physical volume label read from /dev/loop0
>   Writing physical volume data to disk "/dev/loop0"
>   Physical volume "/dev/loop0" successfully created
>   Volume group "nova-volumes" successfully created
> ****************
>  $sudo vgdisplay nova-volumes
> ****************
>   --- Volume group ---
>   VG Name               nova-volumes
>   System ID
>   Format                lvm2
>   Metadata Areas        1
>   Metadata Sequence No  1
>   VG Access             read/write
>   VG Status             resizable
>   MAX LV                0
>   Cur LV                0
>   Open LV               0
>   Max PV                0
>   Cur PV                1
>   Act PV                1
>   VG Size               20.00 GiB
>   PE Size               4.00 MiB
>   Total PE              5119
>   Alloc PE / Size       0 / 0
>   Free  PE / Size       5119 / 20.00 GiB
>   VG UUID               tslbL3-iEfc-8DPW-FXBx-vmQV-4Fcb-Dkvw0W
> **********************
>  After a while or restart the service, vgdisplay nova-volumes will show Volume group "nova-volumes" not found, I don't know why.
>
> Best Regards,
> Hongna
>
> -----Original Message-----
> From: Russell Bryant [mailto:rbryant at redhat.com]
> Sent: Friday, September 14, 2012 10:45 PM
> To: darren.birkett at gmail.com
> Cc: Xu, HongnaX; rhos-list at redhat.com
> Subject: Re: [rhos-list] launch instance and create volume issues
>
> On 09/14/2012 10:35 AM, Darren Birkett wrote:
>> Hi,
>>
>> The warnings you are seeing are just debug messages from nova-manage
>> and are not relevant to your problems.
>>
>> Did you try restarting all the nova services and wait a minute?
>>
>> As for the nova-volume problem, what does the volume.log say?  Do you
>> have a vg called nova-volumes?
>
> It would be good to check the other logs in /var/log/nova/ for hints about the first problem, as well.
>
> --
> Russell Bryant