Gluster users - Aug 2012 - Gluster + QEMU + live Migration + cache != none

Dear All,

I've just updated my VM hosts to Scientific Linux 6.3. After setting the
Disk
cache mode to "default" (writethrough?) rather than "none" I
get the following
error when I try to migrate the VM:

migrating wiki1
error: Unsafe migration: Migration may lead to data corruption if disks use 
cache != none

Is gluster "coherent" across nodes, if so can I just use the --unsafe
flag to
force the move?

Many thanks,

Jake

hi, all
    We also observed that live migration was failed when the cache mode is
"write back".




Best Regards.
Jules Wang





At 2012-08-09 19:27:23,"Jake Grimmett" <jog at
mrc-lmb.cam.ac.uk> wrote:
>Dear All,
>
>I've just updated my VM hosts to Scientific Linux 6.3. After setting the
Disk
>cache mode to "default" (writethrough?) rather than
"none" I get the following
>error when I try to migrate the VM:
>
>migrating wiki1
>error: Unsafe migration: Migration may lead to data corruption if disks use 
>cache != none
>
>Is gluster "coherent" across nodes, if so can I just use the
--unsafe flag to
>force the move?
>
>Many thanks,
>
>Jake
>_______________________________________________
>Gluster-users mailing list
>Gluster-users at gluster.org
>http://gluster.org/cgi-bin/mailman/listinfo/gluster-users
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