System: dual pentium 450, linux 2.2.1 SMP, BusLogic BT-958, two 4.5 GB SCSI
disks with root RAID1, raid0145 and raidtools from mid February
buslogic scsi driver compiled into the kernel
Symptoms: solid freeze, no response to ALT SysRq, ping, etc.
A web server is running on the machine, otherwise it was more or less idle at
the time of the freeze. Uptime ~1week, load typically around 0.4. The
machine froze without warning. I tried to sync via ALT SysRq s, however raid
was dead, no sync possible. Soft reboot worked and the machine is up and
running stable again since Friday (5 days). All the md devices re-synced in
background.
Logs:
Mar 19 00:02:38 xxx kernel: scsi0: Sending Bus Device Reset CCB #9203493 to Target 1
Mar 19 00:02:38 xxx kernel: SCSI bus is being reset for host 0 channel 0.
Mar 19 00:02:38 xxx kernel: scsi0 channel 0 : resetting for second half of retries.
Mar 19 00:02:35 xxx kernel: scsi0: Bus Device Reset CCB #9203364 to Target 1 Completed
Mar 19 00:02:35 xxx kernel: scsi0: Sending Bus Device Reset CCB #9203364 to Target 1
Mar 19 00:02:35 xxx kernel: SCSI bus is being reset for host 0 channel 0.
Mar 19 00:02:35 xxx kernel: scsi0 channel 0 : resetting for second half of retries.
No other sign of anything unusual. This machine has been running since early
December, starting with 2.1.109ac11, without any scsi trouble.
Is this a sign of hardware problems or could there be a problem with software
raid? Is there anything I could do to help debugging?
Thanks
Thorsten
boot is from a regular partition, the rest is md devices
/dev/sda1 /boot ext2 defaults 1 2
/dev/md0 / ext2 defaults 1 1
/dev/md1 /tmp ext2 defaults 1 2
/dev/md2 /var ext2 defaults 1 2
/dev/md3 /usr ext2 defaults 1 2
# sample raiddev configuration file
# /boot md4 sda1
# / md0 sda13
# /tmp md1 sda8
# /var md2 sda7
# /usr md3 sda5
# /home md4 sda6
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 128
device /dev/sda13
raid-disk 0
device /dev/sdb13
raid-disk 1
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 128
device /dev/sda8
raid-disk 0
device /dev/sdb8
raid-disk 1
raiddev /dev/md2
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 128
device /dev/sda7
raid-disk 0
device /dev/sdb7
raid-disk 1
raiddev /dev/md3
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 128
device /dev/sda5
raid-disk 0
device /dev/sdb5
raid-disk 1
