ZFS kernel panic in single user
Kris Kennaway
kris at FreeBSD.org
Tue Mar 11 00:35:33 UTC 2008
Eric F Crist wrote:
> Hey folks,
>
> Please 'reply-all' as I'm not on the mailing list.
>
> For background, we've got the following setup:
>
> Dell PowerEdge 1650 w/2xP3 1.113GHz 1GB ECC RAM
> Dell SCSI ACI Backplane 1x3
> 2x 73GB Seagate 10K SCSI Drives
> 1x IDE->CF Converter
> 1x 1GB CF Card
>
> We loosely followed the instructions over at
> http://www.ish.com.au/solutions/articles/freebsdzfs. There is one key
> difference to our setup from the ish.com.au instructions. We are using
> the CF card for our /bootdir partition to get the FreeBSD kernel loaded
> enough to load the ZFS modules. We don't have a boot record or anything
> on the two SCSI drives. Our idea being that, if a drive fails, the CF
> card and all the boot goodness stays where it is.
>
> To my point. I ran across the ZFSKnownProblems wiki page which strongly
> encourages the reporting of any problems we have. From a booted system,
> I issued the 'shutdown now' command to bring the system down to
> single-user mode. Issuing a reboot command from this point, I get the
> following errors:
>
> Spin lock 0xc0bdca00 (sched lock) held by 0xc3f10c60 (tid 100001)
> too long
> panic: spin lock held too long
Please add WITNESS and DDB and determine the backtrace of the thread
holding the lock, then file this information in a PR.
Kris
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