On Friday 18 Sep 2015 19:15:50 Rich Freeman wrote: > On Fri, Sep 18, 2015 at 1:56 PM, Mick <michaelkintz...@gmail.com> wrote: > > On Friday 18 Sep 2015 17:16:54 Marc Joliet wrote: > >> On Friday 18 September 2015 10:31:01 Mick wrote: > >> >A couple of months ago the akonadi DB went sideways and kmail played up > >> >as a result. Again I was suspicious of btrfs, but neither the logs > >> >nor fsck showed up anything. > >> > >> I take it "btrfs scrub" didn't turn up anything, or is that what you > >> meant by fsck? > > > > Am I supposed to run scrub with I do not have a RAID running? I thought > > scrub was meant for comparing checksums between mirrored fs - have I got > > this wrong? > > You can actually run scrub on a non-raid btrfs setup. Btrfs will > report any errors that it detects (using the checksumming in the > filesystem), but it would not be able to fix errors unless you have it > storing redundant data somewhere (even on non-raid it still stores > redundant metadata by default, and you can choose to do this with data > as well which protects against block-level failures but not disk-level > failures, obviously). > > However, you'd have gotten the same errors in dmesg just trying to > read the files - btrfs checks the checksum on all file read > operations. That is a big part of the value of both btrfs and zfs.
Ah! V interesting ... can I run scrub with mounted partitions, or do I have to do it from a LiveCD? -- Regards, Mick
signature.asc
Description: This is a digitally signed message part.
