[Lustre-discuss] OSS replacement
Johann Lombardi
johann at whamcloud.com
Thu Feb 24 04:39:56 PST 2011
On Thu, Feb 24, 2011 at 12:01:59PM +0100, Gizo Nanava wrote:
> One question to be on safe side, if something goes wrong, would it be
> possible to reuse the replaced OSS?
Well, the problem is if the clients & the MDS reconnect and start performing operations (writes, creations, ...) on the new OST, you will of course miss all those updates on the old one.
BTW, i have just realized that you want to replace the whole OSS and not just the storage. Is the new OSS going to have the same nid as the old one? If not, the procedure becomes more complicated since you need to update the configuration logs on the MGS:
http://wiki.lustre.org/manual/LustreManual18_HTML/ConfiguringLustre.html#50651184_pgfId-1303457
HTH
Cheers,
Johann
--
Johann Lombardi
Whamcloud, Inc.
www.whamcloud.com
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