Re: [ceph-users] RBD client newer than cluster

[Christian Balzer]

On Wed, 15 Feb 2017 02:56:22 +0900 Shinobu Kinjo wrote:

> On Wed, Feb 15, 2017 at 2:18 AM, Lukáš Kubín  wrote:
> > Hi,
> > I'm most probably hitting bug http://tracker.ceph.com/issues/13755 - when
> > libvirt mounted RBD disks suspend I/O during snapshot creation until hard
> > reboot.
> >
> > My Ceph cluster (monitors and OSDs) is running v0.94.3, while clients
> > (OpenStack/KVM computes) run v0.94.5. Can I still update the client packages
> > (librbd1 and dependencies) to a patched release 0.94.7, while keeping the
> > cluster on v0.94.3?  
> 
> The latest hammer is v0.94.9 and hammer will be EOL in this spring.

As long as http://tracker.ceph.com/issues/17386 isn't rolled out in a .10
release telling people to upgrade to .9 when they have no pressing needs
otherwise is a bit iffy. 
Might work out w/o problems in a small enough cluster, but still.

And Jewel has seriously failed to impress me so far considering the stream
of releases to deal with bugs and regressions. 

While I'm going to start our next cluster with Jewel, another one is
likely to remain frozen into Hammer until its natural death (HW
retirement or renewal).

Christian

> Why do you want to keep v0.94.3? Is it because you just want to avoid
> any risks regarding to upgrading packages?
> 
> >
> > I realize it's not ideal but does it present any risk? Can I assume that
> > patching the client is sufficient to resolve the mentioned bug?
> >
> > Ceph cluster nodes can't receive updates currently and this will stay so for
> > some time still, but I need to resolve the snapshot bug urgently.
> >
> > Greetings,
> >
> > Lukáš
> >
> > ___
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> > ceph-users@lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >  
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-- 
Christian BalzerNetwork/Systems Engineer
ch...@gol.com   Global OnLine Japan/Rakuten Communications
http://www.gol.com/
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Re: [ceph-users] RBD client newer than cluster

[Lukáš Kubín]

Yes, also. The main reason though is temporarily missing connection from
Ceph nodes to package repo - this will take some days or weeks to reconnect.
The client nodes can connect and update.

Thanks,

Lukáš

On Tue, Feb 14, 2017 at 6:56 PM, Shinobu Kinjo  wrote:

> On Wed, Feb 15, 2017 at 2:18 AM, Lukáš Kubín 
> wrote:
> > Hi,
> > I'm most probably hitting bug http://tracker.ceph.com/issues/13755 -
> when
> > libvirt mounted RBD disks suspend I/O during snapshot creation until hard
> > reboot.
> >
> > My Ceph cluster (monitors and OSDs) is running v0.94.3, while clients
> > (OpenStack/KVM computes) run v0.94.5. Can I still update the client
> packages
> > (librbd1 and dependencies) to a patched release 0.94.7, while keeping the
> > cluster on v0.94.3?
>
> The latest hammer is v0.94.9 and hammer will be EOL in this spring.
> Why do you want to keep v0.94.3? Is it because you just want to avoid
> any risks regarding to upgrading packages?
>
> >
> > I realize it's not ideal but does it present any risk? Can I assume that
> > patching the client is sufficient to resolve the mentioned bug?
> >
> > Ceph cluster nodes can't receive updates currently and this will stay so
> for
> > some time still, but I need to resolve the snapshot bug urgently.
> >
> > Greetings,
> >
> > Lukáš
> >
> > ___
> > ceph-users mailing list
> > ceph-users@lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >
>
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Re: [ceph-users] RBD client newer than cluster

[Shinobu Kinjo]

On Wed, Feb 15, 2017 at 2:18 AM, Lukáš Kubín  wrote:
> Hi,
> I'm most probably hitting bug http://tracker.ceph.com/issues/13755 - when
> libvirt mounted RBD disks suspend I/O during snapshot creation until hard
> reboot.
>
> My Ceph cluster (monitors and OSDs) is running v0.94.3, while clients
> (OpenStack/KVM computes) run v0.94.5. Can I still update the client packages
> (librbd1 and dependencies) to a patched release 0.94.7, while keeping the
> cluster on v0.94.3?

The latest hammer is v0.94.9 and hammer will be EOL in this spring.
Why do you want to keep v0.94.3? Is it because you just want to avoid
any risks regarding to upgrading packages?

>
> I realize it's not ideal but does it present any risk? Can I assume that
> patching the client is sufficient to resolve the mentioned bug?
>
> Ceph cluster nodes can't receive updates currently and this will stay so for
> some time still, but I need to resolve the snapshot bug urgently.
>
> Greetings,
>
> Lukáš
>
> ___
> ceph-users mailing list
> ceph-users@lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
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