Thanks for your reply ;) So every OSTs, MGS or MDTs are SPOFs and needs to be covered from crashing. Each of them must have a passive node to fail over to... That involve a pretty complicated architecture!
Pravin Shelar wrote: > On 9/17/07, kieran JOYEUX <[EMAIL PROTECTED]> wrote: > >> One more thing Lennard :) When i read that Lustre is a fault tolerant >> FS, is it thanks to Heartbeat or something else ? Sorry if my question >> sounds dumb... :) >> > > Heartbeat is component to detect failures, It will discover faults > related to node(s) crash and will trigger recovery process. There are > lots of components which participate in recovery process e.g. > journals, DLM, meta data server , raid, etc. > Synchronized co-ordination between these components will recover user files. > > > --pravin. > > >> Thanks !! :) >> >> Lennard Bakker wrote: >> >>> -----BEGIN PGP SIGNED MESSAGE----- >>> Hash: SHA1 >>> >>> kieran JOYEUX wrote: >>> >>> >>>> I know its possible to strip a file across multiple OSTs and make some >>>> RAID 0. But is it possible to set up some kind of RAID 5 over OSTs. I >>>> mean one disk on each OSTs, the file is stripped over them and still >>>> fault tolerant if a node goes down. >>>> >>>> >>> You are looking for 'Multi-server file declustering (RAID)'. >>> Accoring to the roadmap (http://www.clusterfs.com/roadmap.html) it is >>> planned for version 2.0 (Q3 - 2008). >>> >>> Lennard >>> -----BEGIN PGP SIGNATURE----- >>> Version: GnuPG v1.4.6 (MingW32) >>> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org >>> >>> iD8DBQFG7kcQB3IFhTJpAVkRAmmIAJ40rmx5vVSQJhnWLhoKzRlMCAYLcgCg6o7D >>> BlES9m0HUS0rzu84fjMJWac= >>> =2aa4 >>> -----END PGP SIGNATURE----- >>> >>> >>> >> _______________________________________________ >> 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
