[Lustre-discuss] Removing OSTs

[Mag Gam]

I wish they would really address this problem. We have many OSS which
we simply don't have anymore and it would be nice to remove all of
them.


On Tue, Nov 3, 2009 at 10:51 AM, Mervini, Joseph A <jamervi at sandia.gov> wrote:
> It is possible but it's painful and probably depends on the reason. I had a situation a while back where the script I was using to mkfs.lustre had the wrong fsname applied and as a result added the OST to the wrong lustre file system.
>
> After realizing my mistake I backed out and reformatted the OSTs with the right parameters. The problem was that file system still had those OSTs registered and produced lots of errors. I tried to fix it by doing things like deactivate the OSTs, etc., but nothing worked. My only option appeared to be to reformat the entire file system. However, since I had nothing to lose I tried and successfully used tunefs.lustre --writeconf on the OSTs and MDT to remove and re-registration the OSTs with the MDS and everything came back fine.
>
> That being said, there was no data on the OSTs that I removed. I can't say what might happen to the file system if there is.
>
> -----Original Message-----
> From: lustre-discuss-bounces at lists.lustre.org [mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of Mag Gam
> Sent: Monday, November 02, 2009 7:15 PM
> To: lustre-discuss at lists.lustre.org
> Subject: [Lustre-discuss] Removing OSTs
>
> Is it possible to remove a OST permanently on 1.8.x?
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