> Drat. There it is; you've got a command that looks like it's stuck in
> the adapter.
>
> try changing the value of TWE_Q_LENGTH in /sys/dev/twe/twereg.h to 100 and
> see if you can reproduce it.
Well, I just woke up and mysqd was stuck again in getblk, this time with a
TWE_Q_LENGTH of 100:
db> call twe_report
twe0: status 57007390<CQEMPTY,UCREADY,RQEMPTY,>
twe0: current max
twe0: free 0099 0100
twe0: ready 0000 0000
twe0: busy 0001 0100
twe0: complete 0000 0011
twe0: bioq 0000 0027
twe0: AEN queue head 1 tail 0
twed: total bio count in 1646323 out 1646322
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