On Sat, Oct 07, 2000 at 09:00:15PM -0500, Diamon wrote:
>
> I hope this is going to the right list/group/etc, as I got this email
> address from someone on #kernelnewbies...
linux-raid is better for RAID problems.
>
> Attempting to mkraid /dev/md0 a raid5 array using a Buslogic Flashpoint
> fast SCSI PCI card will always hard lock the system at exactly 2% complete.
> There is no oops or log, and it's a total lockup. I can't even switch
> virtual terminals when it locks. Using an AHA-2940UW in place of the
> buslogic works perfectly.
Which tells us it's not a bug in the RAID layer.
>
> This is using kernel 2.2.17 with the raid 0.90 B0 patch which applied
> cleanly. I was wondering if it was raid, but since the 2940 worked, I
> started to wonder about the Buslogic card driver maybe.
>
> root@userhost:~# cat /proc/mdstat
> Personalities : [linear] [raid0] [raid1] [raid5]
> read_ahead 1024 sectors
> md0 : active raid5 sdd1[2] sdc1[1] sdb1[0] 4185856 blocks level 5, 4k chunk,
> alg
> orithm 0 [3/3] [UUU] resync=68% finish=17.8min
> unused devices: <none>
> root@userhost:~#
>
> A cut-and-paste of the rebuild in progress. It completed normally and
> was usable after that on the 2940. I will test any other variations of
> tests I can think of and give the results.
>
> Any information on even how I can troubleshoot this further would be
> appreciated!
I bet you can make your system lock up with the buslogic card just by doing
normal non-RAID disk I/O as well. Try copying files between the disks, or
something else that's disk intensive.
I don't know about special issues with the buslogic card and the kernel you're
running. It could be a driver problem, a card problem, or perhaps a wiring
problem (this can sometimes kill the kernel because some drivers error-handling
suck) or a disk problem (if the reconstruction halts at the exact same place
every time this could be likely).
--
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: Jakob Østergaard : See him rise and claim the earth, :
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This archive was generated by hypermail 2b29 : Sun Oct 15 2000 - 21:00:10 EST