[Gluster-users] Replacing brick in replicated volume without reducing redundancy?

Stefan gluster at stefanseidel.info
Tue Jan 7 10:22:02 UTC 2020


Thanks, that sounds interesting. From what I understand, arbiter setups only support multiple-of-2 data bricks, but maybe it's possible to replace the arbiter with a data brick, then replace the old data brick with an arbiter again. 

Stefan 

> From: "Strahil Nikolov" <hunter86_bg at yahoo.com>
> To: "gluster-users" <gluster-users at gluster.org>, "Stefan"
> <gluster at stefanseidel.info>
> Sent: Tuesday, 7 January, 2020 10:18:11
> Subject: Re: [Gluster-users] Replacing brick in replicated volume without
> reducing redundancy?

> I'm not sure if you can increase (and later decrease) the replica count without
> stopping the volume.
> Have you checked that as an option ?

> Best Regards,
> Strahil Nikolov

> В вторник, 7 януари 2020 г., 3:58:11 ч. Гринуич-5, Stefan
> <gluster at stefanseidel.info> написа:

> Hi,

> I am looking to replace a brick in a replicated volume with arbiter (2+1
> bricks).
> Judging from this page: [
> https://docs.gluster.org/en/latest/Administrator%20Guide/Managing%20Volumes/#replace-brick
> |
> https://docs.gluster.org/en/latest/Administrator%20Guide/Managing%20Volumes/#replace-brick
> ]
> it seems that the procedure is: simulate a brick failure, then add a replacement
> brick.

> Is that the only way to do it? Isn't there a way to migrate the data on the fly
> without running on reduced redundancy during the migration, like pvmove exists
> for LVM?

> Thanks,

> Stefan
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