On Tue, 19 Jul 2011 18:35:26 +0200 Pavel Herrmann <morpheus.ibis@xxxxxxxxx> wrote: > On Tuesday 19 of July 2011 21:12:40 Roman Mamedov wrote: > > > I do monthly scans, so the redundancy syndromes should have been > > > up-to-date, the array is made of 8 disks, the setup is ext4 on lvm on > > > mdraid > > > > Did you notice any nonzero mismatch_cnt during those scans? > > oh crap, the rebuild finished with > > Jul 19 09:41:24 Bloomfield mdadm[3996]: RebuildFinished event detected on md device /dev/md0, component device mismatches found: 3184 > > this is really bad i presume? Well, this basically tells you what you already know - a part of the data you have was corrupted. In this case I think it's 3184 512-byte sectors, which is about 1.6MB total. How it got there and how to prevent that from happening in the future - that's a whole different question. -- With respect, Roman
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