On 3/5/15 7:15 AM, Harry wrote: > Update -- so far, we've not managed to gain any confidence that we'll > ever be able to re-mount that disk. The general consensus seems to be > to fish all the data off the disk using rsync, and then move off XFS > to ext4. > > Not a very helpful message for y'all to hear, I know. But if it's any > help in prioritising your future work, i think the dealbreaker for us > was the inescapable quotacheck on mount, which means that any time a > fileserver goes down unexpectedly, we have an unavoidable, > indeterminate-but-long period of downtime... > > hp What you decide to use is up to you of course, and causes us no heartbreak. :) But I think you fundamentally misunderstand the situation; an unexpected fileserver failure should not result in a lengthy quotacheck on xfs, because xfs quota is journaled, and will simply be replayed along with the rest of the log. I honestly don't know what has led you to the conclusion that remounting the filesystem will lead to any quotacheck at all, let alone a lengthy one. > * We're even a bit worried the disk might be in a broken state, such > that the quotacheck won't actually complete successfully at all. If your disk is broken, that's not a filesystem issue. It seems possible that whatever drbd manipulation you're doing is causing an issue, but because you haven't really explained it in detail, I don't know. > We take DRBD offline, so it's no longer writing, then we take > snapshots of the drives, then remount those elsewhere so we can > experiment without disturbing the live system. Did you quiesce the filesystem first with i.e. xfs_freeze? So far this thread has been long on prose and speculation, and short on actual analysis, log messages, etc. Feel free to use ext4 or whatever suits you, but given that nothing in this thread has implicated misbehavior by xfs, I don't think that switching filesystems will solve the perceived problem. -Eric _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
