Hi,
I have a Dell R200 running OpenBSD 4.9, which operates as the edge router
for our office. It's been working for a long time without any intervention
required until recently, when it began exhibiting kernel panics.
At first, I thought it was a random occurrence, but I dutifully took screen
shots of trace and ps outputs via dbb and rebooted the box. Since that
time, it's happened on two or three further occasions, but unfortunately, I
wasn't the one in the office and so no screen caps were taken.
Today, I arrived at the office to find the system panicked again, so I took
screen caps and compared them to the first time it happened. I'm not
experienced in debugging BSD kernel panicks, but it appears that the same
function is causing the problem: ffs_blkfree()
My initial searches online seem to suggest this is potentially a problem
with the disk(s); perhaps a bad block. The machine runs a Symbios Logic
SAS1068E hardware RAID controller, which appears to the OS as a device
mpi0. Running bioctl mpi0 shows the following:
# bioctl mpi0
Volume Status Size Device
mpi0 0 Online 249376538112 sd0 RAID1
0 Online 249999999488 0:8.0 noencl <ATA ST3250310NS
MA08>
1 Online 249999999488 0:1.0 noencl <ATA ST3250310NS
MA08>
So, the RAID controller seems to think the underlying disks are ok.
Here are the links for the dbb output I grabbed on both occasions:
https://www.dropbox.com/s/vmvuzn3qg2af85l/2013-10-10%2008.53.35.jpg
https://www.dropbox.com/s/r9jaofaotvjr6gx/2013-10-10%2008.53.41.jpg
https://www.dropbox.com/s/creu48dcb48yirh/2013-10-10%2008.53.49.jpg
https://www.dropbox.com/s/w0h4sjkkfe5ns1j/2013-10-10%2008.56.17.jpg
https://www.dropbox.com/s/5ol10lmaznii3yp/2013-10-10%2008.56.30.jpg
https://www.dropbox.com/s/154er8pans2dph5/2013-10-18%2009.29.51.jpg
https://www.dropbox.com/s/aqte9poi8p4ezcp/2013-10-18%2009.30.21.jpg
https://www.dropbox.com/s/lxl5l8vylavo64o/2013-10-18%2009.30.30.jpg
https://www.dropbox.com/s/g2zf1fnk2zrvqml/2013-10-18%2009.30.34.jpg
https://www.dropbox.com/s/wnpx6mh7uyrlht2/2013-10-18%2009.30.53.jpg
https://www.dropbox.com/s/amf8z1s73g8ovxi/2013-10-18%2009.31.00.jpg
https://www.dropbox.com/s/q0yf37n6wbr98cl/2013-10-18%2009.31.06.jpg
I hope this helps. As I've stated, I suspect a hardware issue, but I'd just
like some further analysis from people more experienced than I.
Thanks,
Pete
