[ovirt-users] [Gluster-users] Gluster 3.7.8 from ovirt-3.6-glusterfs-epel breaks vdsm ?

[Sahina Bose]

On 02/18/2016 08:33 PM, Kaushal M wrote:
> On Thu, Feb 18, 2016 at 6:39 PM, Matteo <mbrancaleoni at voismart.it> wrote:
>> Seems that the "info" command is broken.
>>
>> the status command for example seems to work ok.
>>
>> Matteo
>>
>> ----- Il 17-feb-16, alle 14:15, Sahina Bose sabose at redhat.com ha scritto:
>>
>>> [+gluster-users]
>>>
>>> Any known compat issues with gluster 3.7.8-1.el7 client packages and
>>> glusterfs 3.7.6-1.el7 server?
>>>
> There might be some new information that 3.7.8 CLI expects, but I'd
> need to check to verify what it is. We don't really test the Gluster
> CLI for backwards compatibility, as we expect the CLI to used with
> GlusterD on it's own host. So when using the gluster CLI's
> --remote-host option, with different versions of CLI and glusterd, the
> user should expect some breakage sometime.
>
> With REST support being planned for 3.8, I'd like to retire the
> --remote-host option in its entirety. Going further, the user should
> only use the REST apis, when attempting to do remote operations.


The --remote-host option is now used by vdsm to query volume info from 
remote gluster servers, and check the replica count as well as querying 
the backup-volfile-servers that can be used for mount.

I think  before this option is retired, we need to change vdsm to use 
the alternative REST API.


>
>>> On 02/17/2016 04:33 PM, Matteo wrote:
>>>> Hi,
>>>>
>>>> today I update one node os, in the updates gluster client
>>>> packages where upgraded from 3.7.6-1.el7, centos-ovirt36 repository
>>>> to 3.7.8-1.el7, ovirt-3.6-glusterfs-epel and after reboot
>>>> the node was marked not operational.
>>>>
>>>> looking into the logs, vdsm was failing to get gluster volume information.
>>>>
>>>> the command (ovirt-storage is the gluster storage where the hosted engine is
>>>> kept)
>>>>
>>>> gluster --mode=script volume info --remote-host=gluster1 ovirt-storage --xml
>>>>
>>>> was failing, returning error 2 (and no output)
>>>>
>>>> doing yum downgrade on gluster client packages (back to 3.7.6-1.el7,
>>>> centos-ovirt36) fixed everything.
>>>>
>>>> Data nodes are running glusterfs 3.7.6-1.el7.
>>>>
>>>> The funny thing is that from the ovirt I was able to manually mount the
>>>> glusterfs shares,
>>>> only the volume info command was failing, thus breaking vdsm.
>>>>
>>>> Any hint?
>>>>
>>>> regards,
>>>> Matteo
>>>>
>>>>
>>>>
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