Just a followup ...
Neil said he has never seen disks corrupt spontaneously. I'm just making
the rounds of checking the daily md5sums on one group of machines with
a view to estimating the corruption rates. Here's one of the typical
(one bit) corruptions:
doc013:/usr/oboe/ptb% cmp --verbose /tmp/cardmgr /sbin/cardmgr
1641 22 52
/tmp has the correct version, copied from elsewhere. I haven't checked
yet to see if it's a memory error or a disk error. I'll reboot the
whole set later. But this machine has been up only 2 days so it's
unlikely to have accumulated errors, and cardmgr will not have been
used apart from being md5summed.
There are 30 machines in this set. I may have more stats when I have
finished.
Peter
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