lkml.org 
[lkml]   [2000]   [Oct]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Hard lock with Raid 0.90 on buslogic flashpoint SCSI card
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).

--
................................................................
: jakob@unthought.net : And I see the elder races, :
:.........................: putrid forms of man :
: Jakob Østergaard : See him rise and claim the earth, :
: OZ9ABN : his downfall is at hand. :
:.........................:............{Konkhra}...............:
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:39    [W:0.038 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site