What RAID level is this? Would RAID 10 or RAID 6 help in such scenarios? On Mon, Mar 14, 2011 at 9:56 AM, Joe Landman <landman at scalableinformatics.com> wrote: > On 03/14/2011 12:50 PM, Terry Haley wrote: >> >> Hello, > > [...] > >> My question has two parts. >> >> >> >> 1. ? ? ? If I perform an xfs_repair will gluster become out of sync with >> the >> filesystem in lieu of repairs? > > If the xfs_repair modifies the extended attributes, it is possible that the > gluster file system will appear to be inconsistent. ?Same issue would be > with ext* and fsck. ?Gluster team would need to respond to this. > >> 2. ? ? ? Can I trust the backups I performed after these issues cropped up >> as a result of the distribution of files across the nodes? Ie, a file is >> only ? complete or would gluster complain and make that file unavailable >> as >> it should? > > Good question. ?Can you verify that the data stored on the corrupted RAID > hasn't been replicated to the other nodes? ?If so, easiest route might be a > RAID rebuild, and then a file system wipe on the effected node, followed by > a resync (assuming you are doing a replicated design). > > If the bad data's been replicated, then you probably have to trash that data > (and do something similar to the above anyway). > > Does your RAID kit have a scan/check function? ?We do this with our units > (both hardware/software RAID), and schedule full scans at least weekly. > ?Strongly advise something similar if you aren't doing it already. > > Regards, > > Joe > > -- > Joseph Landman, Ph.D > Founder and CEO > Scalable Informatics Inc. > email: landman at scalableinformatics.com > web ?: http://scalableinformatics.com > ? ? ? http://scalableinformatics.com/sicluster > phone: +1 734 786 8423 x121 > fax ?: +1 866 888 3112 > cell : +1 734 612 4615 > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://gluster.org/cgi-bin/mailman/listinfo/gluster-users >
