How many other OSS's do you have, and do you have enough space to just migrate the data off the ost? You can copy all the files you know are on the ost, and then remove the original. If you deactivate the failing ost on the MDS, no new files will get placed there. Once you have everything off the ost, the final dump/restore should go fairly quickly
Evan > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Stuart Midgley > Sent: Tuesday, June 05, 2007 5:02 PM > To: lustre > Subject: [Lustre-discuss] failing hardware in ost > > Morning > > We have some failing hardware in an oss (md raid5 over 6 x > 750GB sata > disks) and I would like to migrate all the data off to a new oss. > This looks relatively straight forward enough, but can you do > it semi- live? > > What I want to do is mount the lustre partition read only > while it is still being served up and rsync the data off to a > new oss (which will take ~24hrs). Then, bring the entire > cluster down, do the last rsync (which will hopefully be > fast), turn the old oss off and bring the new replacement oss > into the cluster. In this way, downtime will be minimised. > > Will this work? Has anybody tired such a scheme? > > Thanks. > > > -- > Dr Stuart Midgley > [EMAIL PROTECTED] > > > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > https://mail.clusterfs.com/mailman/listinfo/lustre-discuss > _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
