[Gluster-users] Gluster 3.5 problems with libgfapi/qemu

[Vijay Bellur]

On 06/11/2014 11:25 PM, Ivano Talamo wrote:
> Hello,
> I recently update 2 servers (Scientific Linux 6) with a replicate volume
> from gluster 3.4 to 3.5.0-2.
> The volume was previously used to host qemu/kvm VM images accessed via a
> fuse-mounted mount-point.
> Now I would like to use the libgfapi but I'm seeing this error:
>
> [root at cmsrm-service02 ~]# qemu-img info
> gluster://cmsrm-service02/vol1/vms/disks/cmsrm-ui01.raw2
> [2014-06-11 17:47:22.084842] E [afr-common.c:3959:afr_notify]
> 0-vol1-replicate-0: All subvolumes are down. Going offline until atleast
> one of them comes back up.
> image: gluster://cmsrm-service03/vol1/vms/disks/cmsrm-ui01.raw2
> file format: raw
> virtual size: 20G (21474836480 bytes)
> disk size: 4.7G
> [2014-06-11 17:47:22.318034] E [afr-common.c:3959:afr_notify]
> 0-vol1-replicate-0: All subvolumes are down. Going offline until atleast
> one of them comes back up.
>

This is a benign error message. qemu-img initializes a glusterfs graph 
through libgfapi, performs the operation and then cleans up the graph. 
afr translator in glusterfs displays this log message as part of a graph 
cleanup operation. IIRC, qemu displays all log messages on stderr by 
default and hence this message is seen.

> The error message does not appear if I access the file via the mount-point.
>

There should be no functional problem even if this message is seen.

-Vijay