We are actually in an HA setup now. My main concern is a double disk failure on the MDT device.
Thanks, Dan Kulinski -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Wednesday, June 17, 2009 11:49 AM To: Ramiro Alba Queipo Cc: Daniel Kulinski; [email protected] Subject: Re: [Lustre-discuss] MDT backup procedure IMHO, may be one can do a HA-MDS using shared storage all the datas are in the shared storage so U can do a failover Ramiro Alba Queipo wrote: > HiDaniel, > > By reading Chapter 15 of Lustre Operations Manual, it follows that an > MDT backup is only useful if you are changing hardwary or the like. > I am afraid that you can not pretend to replace with a previous image > an failed MDT, as data in OSTs and MDT is not matching any more, right? > > Cheers > > On Wed, 2009-06-17 at 09:41 -0600, Daniel Kulinski wrote: > >> As we move forward with our lustre testing I am wondering about MDT >> backup. >> >> >> >> Is it feasible to unmount the MDT, create an image of it and remount >> it after the backup. Of course this wouldn’t happen but nightly. >> >> >> >> From what I can identify, in the case of an MDT failure we would have >> to do the following: >> >> >> >> Restore from the last backup. >> >> Run an lfsck across the filesystem. >> >> >> >> Am I missing anything else at this point? We will also be doing file >> level backups of the filesystem as a whole but we are looking for >> quick ways to recover from an MDT failure. >> >> >> >> Thanks, >> >> Dan Kulinski >> >> >> >> -- >> Aquest missatge ha estat analitzat per MailScanner a la cerca de >> virus i d'altres continguts perillosos, i es considera que está net. >> MailScanner agraeix a transtec Computers pel seu suport. >> _______________________________________________ >> Lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/mailman/listinfo/lustre-discuss >> >> --------------------------------------------------------------------- >> --- >> >> _______________________________________________ >> Lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/mailman/listinfo/lustre-discuss >> _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
