On Wed, Mar 14, 2012 at 1:43 PM, Alan McKay <alan.mckay at gmail.com> wrote: > Well I did exactly what I'd done 3 months ago and found a faulty RAM chip > this time > > My guess is that back then the chip was still functioning some of the time, > and happened to be fine just when I was doing the tests. > > This time I found it fairly easily with a systematic approach. If you were running software RAID1 on that box, don't trust anything on the drives now. Maybe even if you weren't, but it is especially weird when alternate reads randomly revive bad data that you thought had been fixed already. -- Les Mikesell lesmikesell at gmail.com