Wojciech, thanks! I forgot to mention that our disk storage will be on UPS.
Alex. On Fri, 13 Jan 2012 11:13:08 +0000 Wojciech Turek wrote: > Make sure that use use RAID controller's with cache protected by > battery backup and if you use redundant controllers that the cache > mirroring feature is enabled. The ldiskfs (ext4) should recover after > power failures with no problems as long as the back end storage > recovers fine too. > > Best regards, > > Wojciech > > On 13 January 2012 11:01, Alexander Oltu <[email protected]> > wrote: > > > Hi, > > > > We are going to have a Lustre setup with around 1000 clients. Due > > to a power cable constraints we are not able to provide power to > > OSS and MDS servers from UPS. > > > > Therefore the question is how resilient is Lustre to OSS and/or MDS > > power failures? > > > > We have quite few thunderstorms here during summer with short power > > interruptions. I understand that ext4 is a journaling filesystem and > > should be more or less stable to power interruptions. But the real > > practice can be different. I believe that some of you have > > experience of running OSS and MDS without UPS and can shed some > > light on this topic. > > > > Thank you, > > Alex. > > _______________________________________________ > > Lustre-discuss mailing list > > [email protected] > > http://lists.lustre.org/mailman/listinfo/lustre-discuss > > -- Alexander Oltu System Engineer Parallab, Uni Computing HIB, Thormøhlensgt.55 N-5008 Bergen, Norway phone: +47 55584144 _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
