CRC FAILED: LAYER2
dillon at apollo.backplane.com
Tue Jul 7 17:47:37 PDT 2009
:Running this *online* couldn't find any 'B', so I guess I have to
:boot it with a USB memory stick and try it again?
:I'll also try memtest after that. Thanks for the hint.
It's possible that HAMMER caught the problem before it wrote the
sector back to disk, in which case it may only have gotten corrupted
in-memory and the filesystem on-media might be ok.
You can validate the entire filesystem offline (or if it is completely
hammer -f <device> show | egrep '^B'
(that's carrot and B, not control-B)
If no lines are marked bad in the show output then the filesystem is
clean. This can take a while to run since it reads every single last
bit of meta-data and data in the filesystem. If any hammer cleanup
or reblocking op runs while the show is running the show command
will blow up.
The most likely scenario is that there's bad ram.
<dillon at backplane.com>
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