[ovirt-users] Re: Expand gluster volumes
Gluster allows converting from replicted to distributed-replicated (so called expansion)
of the volume.
Of course you need to add the same amount of bricks as the replica count (which should be
either 'replica 3' or 'replica 3 arbiter 1').
The Gluster documentation on the topic is quite extensive , but it's worth mentioning
that you need to 'rebalance' your cluster after the expansion or you risk filling
the old bricks - while having free space on the new bricks.
That is expected ,as each file/dir's name is hashed and each subvolume (new vs old
bricks) will have it's own range of hashes. When you expand the volume, some of the
files/dirs on the old bricks have hashes that match to the new "triplet".
Also , if you do not rebalance - that will have some performance impact as gluster will
search the new bricks (for the files' whose hash matches the new subvolume) before
searching the old bricks.
P.S: I think that the Engine's web interface fully supports that operation, although
I'm used to the cli.
Best Regards,
Strahil Nikolov
В четвъртък, 15 април 2021 г., 20:05:50 ч. Гринуич+3, David White via Users
<users(a)ovirt.org> написа:
Is it possible to expand an existing gluster volume?
I have a hyperconverged environment, and have enough space right now, but I'm going to
have to significantly over-provision my environment. The vast majority of our customers
are using a small fraction of the amount of space that they are technically allocated, but
we still need to make that space available to them.
As a result, I'd like to plan ahead, and go ahead and have a plan to add storage later
down the road.
I'd like to plan to shut down each server in the cluster (individually, not at once),
add storage, and then bring them back online. Once all 3 are back online with the
additional storage, I'd like to expand the gluster volume to use the additional space.
Is that possible? How?
Sent with ProtonMail Secure Email.
_______________________________________________
Users mailing list -- users(a)ovirt.org
To unsubscribe send an email to users-leave(a)ovirt.org
Privacy Statement: https://www.ovirt.org/privacy-policy.html
oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/
List Archives:
https://lists.ovirt.org/archives/list/users@ovirt.org/message/A7C3X2PW4D4...