Hello,
I'm trying to install Debian on 4 RaQ550 with each 2 80GB disks. All
seems OK with 3 of RaQ, but with one, it crash when I put the two disks
in a RAID1 meta device. In fact, it as crash at about 6% before the 70GB
partition is fully synchronized.
The error message is:
===================================================================
Serverworks OSB4 in impossible state.
Disable UDMA or if you are using Seagate then try switching disk types
on this controller. Please report this event to osb4-bug@ide.cabal.tm
OSB4: continuing might cause disk corruption.
===================================================================
I have also send the same email as this one to osb4-bug@ide.cabal.tm.
After some search, it seems I must enable MWDMA for my disks. (ref:
http://www.cs.helsinki.fi/linux/linux-kernel/2002-33/0836.html )
Here is the configuration : 2 IDE 80GB disks, one on hda, one on hdc.
The kernel is the stock 2.4.20, with cobalt patches. The cobalt patches
don't modify the drivers/ide/serverworks.c.
IDE part of lspci -v:
00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 92) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: Sun Microsystems Computer Corp.: Unknown device c000
Flags: bus master, medium devsel, latency 64
I/O ports at fcd8 [size=8]
I/O ports at fcd4 [size=4]
I/O ports at fcc8 [size=8]
I/O ports at fcc4 [size=4]
I/O ports at fcb0 [size=16]
I/O ports at fcac [size=4]
/proc/ide/hda and /proc/ide/hdc say it's a ST380021A. (I have no
physical access to the system now...)
I have try to set the DMA of the disks with:
hdparm -X66 -d 1 /dev/hda
hdparm -X66 -d 1 /dev/hdc
but this has cause a direct hangup (with the same message "Serverworks
OSB4 in impossible state...."). Maybe I don't use correctly hdparm, as
this is my first attempt with it.
At this time, I have disabled the dma with:
hdparm -d 0 /dev/hda
hdparm -d 0 /dev/hdc
and the sync in in the way (but say we need about 6 hours to finish,
comparing to the unmodifed test giving about 1 hour).
So my questions are :
- what can I do ?
- may this problem come also with the others RaQ we have (as far as I
know, they are the same, and they are ordered at the same time)
- is the system safe without dma ?
Thanks in advance for any help, or any pointer to a solution. (Of
course, I can apply a patch to the kernel if this may correct the
problem).
Olivier
-- Olivier Bornet | français : http://puck.ch/f Swiss Ice Hockey Results | english : http://puck.ch/e http://puck.ch/ | deutsch : http://puck.ch/g Olivier.Bornet@puck.ch | italiano : http://puck.ch/i Get my PGP-key at http://puck.ch/pgp or at http://wwwkeys.pgp.net
This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:38 EST