MegaRAID 'Bad Slot' Kernel message and crash.
freebsd-current at byrnehq.com
Wed Dec 29 07:53:53 PST 2004
Wednesday, December 29, 2004, 2:46:04 PM, you wrote:
SL> I've been seeing this problem recently too. I believe that there is
SL> some sort of timing bug/race in the driver, but I haven't been able to
SL> figure it out yet. It also seems to be related to panic from the block
SL> layer that point to commands being completed twice. To be clear with
SL> your observations, are you saying that 4.10-RELEASE is behaving the same
SL> or differently than 4.10-STABLE?
We tried 5.3 just after RELEASE, if I recall correctly, but had updated our
sources and rebuilt world before running our tests. Under 5.3 we wedged
the controller a number of times in the space of 3 days each with a
"bad slot" kernel message.
Once we decided that 5.3 was not a going to cut it for us, we
downgraded to 4.10-STABLE (circa 16th Nov) and re-ran our tests,
this time we couldn't wedge the system. The server has been in
production on 4.10-STABLE for about a month and yesterday was the
first "bad slot" wedge we've seen. I'd hate to think that we can now
look forward to a monthly trip to the hosting facility to hard reset the
More information about the freebsd-stable