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-boun...@lists.lustre.org [mailto:lustre-discuss-boun...@lists.lustre.org] On Behalf Of Mag Gam Sent: Monday, November 02, 2009 7:15 PM To: lustre-discuss@lists.lustre.org Subject: [Lustre-discuss] Removing OSTs Is it possible to remove a OST permanently on 1.8.x? _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss
