[Gluster-users] gluster over vdo, problem with gfapi

[Amar Tumballi]

Hi Dimitry,

Was this working earlier and now failing on Version 8 or is this a new
setup which you did first time?

-Amar

On Wed, Aug 12, 2020 at 1:17 PM dm <dm at belkam.com> wrote:

> 12.08.2020 11:39, dm пишет:
> > Some more info, really we have lvm over lvm here:
> >
> > lvm-vdo-lvm...
> >
> > Thank you!
> >
>
> Sorry, this is wrong, I forgot we replaced this,
>
> vdo now is over physical drive...
>
> So, only one lvm layer here.
>
> >
> > 12.08.2020 11:00, Dmitry Melekhov пишет:
> >> Hello!
> >>
> >>
> >> We are testing gluster 8 on centos 8.2 and we try to use volume
> >> created over vdo.
> >>
> >> This is 2 nodes setup.
> >>
> >> There is lvm created over vdo, and xfs filesystem.
> >>
> >>
> >> Test vm runs just fine if  we run vm over fuse:
> >>
> >>
> >>   <disk type='file' device='disk'>
> >>      <driver name='qemu' type='raw' cache='directsync'/>
> >>      <source file='/root/pool/stewjon.img'/>
> >>      <target dev='vda' bus='virtio'/>
> >>
> >>
> >> /root/pool/ is fuse mount.
> >>
> >>
> >> but if we try to run:
> >>
> >>
> >>   <disk type='network' device='disk'>
> >>      <driver name='qemu' type='raw' cache='directsync'/>
> >>      <source protocol='gluster' name='pool/stewjon.img'>
> >>        <host name='127.0.0.1'/>
> >>      </source>
> >>      <target dev='vda' bus='virtio'/>
> >>    </disk>
> >>
> >>
> >> then vm boot dies, qemu says- no bootable device.
> >>
> >>
> >> It works without cache='directsync' though.
> >>
> >> But live migration does not work.
> >>
> >>
> >> btw, everything work OK if we run VM on gluster volume without vdo...
> >>
> >> Any ideas what can cause this and how it can be fixed?
> >>
> >>
> >> Thank you!
> >>
> >
>
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