[Gluster-users] Replace brick 3.4.2 with 3.6.2?

aytac zeren aytaczeren at gmail.com
Tue Feb 24 23:36:55 UTC 2015

Hi John,

Would you please share your scenario?

* How many nodes are running as gluster server?
* Which application is accesing gluster volume by which means (NFS, CIFS,
Gluster Client)?
* Are you accessing volume through a client or the clients are accessing
volume themselves (like KVM nodes)

Best Regards

On Wed, Feb 25, 2015 at 1:18 AM, John Gardeniers <
jgardeniers at objectmastery.com> wrote:

>  Problem solved, more or less.
> After reading Aytac's comment about 3.6.2 not being considered stable yet
> I removed it from the new node,  removed /var/lib/glusterd/, rebooted (just
> to be sure) and installed 3.5.3. After detaching and re-probing the peer
> the replace-brick command worked and the volume is currently happily
> undergoing a self-heal. At a later and more convenient time I'll upgrade
> the 3.4.2 node to the same version. As previously stated, I cannot upgrade
> the clients, so they will just have to stay where they are.
> regards,
> John
> On 25/02/15 08:27, aytac zeren wrote:
>  Hi John,
>  3.6.2 is a major release and introduces some new features in cluster wide
> concept. Additionally it is not stable yet. The best way of doing it would
> be establishing another 3.6.2 cluster, accessing 3.4.0 cluster via nfs or
> native client, and copying content to 3.6.2 cluster gradually. While your
> volume size decreases on 3.4.0 cluster, you can unmount 3.4.0 members from
> cluster, upgrade them and add 3.6.2 trusted pool with brick. Please be
> careful while doing this operation, as number of nodes in your cluster
> should be reliable with your cluster design. (Stripped, Replicated,
> Distributed or a combination of them).
>  Notice: I don't take any responsibility on the actions you have
> undertaken with regards to my recommendations, as my recommendations are
> general and does not take your archtiectural design into consideration.
>  BR
> Aytac
> On Tue, Feb 24, 2015 at 11:19 PM, John Gardeniers <
> jgardeniers at objectmastery.com> wrote:
>> Hi All,
>> We have a gluster volume consisting of a single brick, using replica 2.
>> Both nodes are currently running gluster 3.4.2 and I wish to replace one of
>> the nodes with a new server (rigel), which has gluster 3.6.2
>> Following this link:
>> https://access.redhat.com/documentation/en-US/Red_Hat_Storage/2.1/html/Administration_Guide/Replacing_an_Old_Brick_with_a_New_Brick_on_a_Replicate_or_Distribute-replicate_Volume.html
>> I tried to do a replace brick but got "volume replace-brick: failed: Host
>> rigel is not in 'Peer in Cluster' state". Is this due to a version
>> incompatibility or is it due to some other issue? A bit of googling reveals
>> the error message in bug reports but I've not yet found anything that
>> applies to this specific case.
>> Incidentally, the clients (RHEV bare metal hypervisors, so we have no
>> upgrade option) are running 3.4.0. Will this be a problem if the nodes are
>> on 3.6.2?
>> regards,
>> John
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