Hi,

I had similar problems (actually your messages could be a cut-and-paste of
my old logs) with my box at the beginning. The actual problems was that
the scsi-bus did not fullfill the specifications. Replacing some hardware
(hot-swap boxes) solved it. BTW, all worked well under DOS in the
test-environment shipped. But as soon as linux got on the box and did
_really_ use the bandwidth on the bus the troubles showed up (timeouts,
renegotiation, slowdown ...).

-Peter

On 01-Feb-2000 Mike Black wrote:
> Try turning off SYNC mode on ALL your drives in the SCSI BIOS.  I had a
> similar problem this last weekend with 2.2.14 and 5.1.21 AIC-7xxx and
> async
> mode fixed it.  I had been previously running SYNC mode with no
> problems,
> but I added two new drives and couldn't get the mkraid to finish without
> hitting the same errors you're seeing.  All my drives are now running
> async
> and are happy.  Slow, but happy.  Previously (on 2.2.14 and prior) they
> were
> running happy in sync mode but I was upgrading this weekend and had to
> do a
> mkraid again (which really bangs the SCSI bus during resync).  I tried
> several times with different sync/async combos with no joy.  I thought
> this
> was just my config on the one machine but, this morning I had a problem
> on
> another box which is a 3x50G 2940U2W setup.  I accidentally left it NFS
> mounted and during the attempted backup it also hit some SCSI timeouts
> -- it
> recovered though.  This box has been flawless for a long time (I think
> it
> must've been the network I/O causing this -- no proof yet -- just
> suspicion).
> 
> Jan 28 08:47:57 medusa kernel: scsi : aborting command due to timeout :
> pid
> 248989, scsi0, channel 0, id 3, lun 0 Write (6) 19 f3 b4
>  80 00
> Jan 28 08:47:57 medusa kernel: scsi : aborting command due to timeout :
> pid
> 248991, scsi0, channel 0, id 5, lun 0 Write (6) 19 f3 b4
>  80 00
> Jan 28 08:47:57 medusa kernel: scsi : aborting command due to timeout :
> pid
> 248992, scsi0, channel 0, id 3, lun 0 Write (6) 19 f4 34
> 04 00
> 
> 
> 
> ________________________________________
> Michael D. Black   Principal Engineer
> [EMAIL PROTECTED]  321-676-2923,x203
> http://www.csihq.com  Computer Science Innovations
> http://www.csihq.com/~mike  My home page
> FAX 321-676-2355
> ----- Original Message -----
> From: "Rainer Mager" <[EMAIL PROTECTED]>
> To: "Linux-RAID" <[EMAIL PROTECTED]>
> Sent: Monday, January 31, 2000 9:07 PM
> Subject: Argh, more problems with SCSI and RAID
> 
> 
> Hi all,
> 
>     I'm trying to do 2 things with SCSI/RAID both of which are having
> problems. Any help would be greatly appreciated. My system is 2.2.14
> with
> the 5.1.22 Adaptec AIC-7xxx drivers.
> 
> 
>     First, I'm trying to get 4 SCSI drives working. Forget RAID, forget
> anything complex, I just want them working. I actually had 5 until
> yesterday
> when one decided to start making loud noises which I intrepreted as
> death
> throws. Anyway, the problem is that after I start up my 4 drives, at
> some
> point, I get this:
> 
> Feb  1 02:48:01 dual kernel: scsi : aborting command due to timeout :
> pid
> 10920, scsi1, channel 0, id 0, lun 0 Read (6) 00 06 df 60 00
> Feb  1 02:48:03 dual kernel: scsi : aborting command due to timeout :
> pid
> 10921, scsi1, channel 0, id 1, lun 0 Read (6) 00 07 c7 08 00
> Feb  1 02:48:03 dual kernel: scsi : aborting command due to timeout :
> pid
> 10922, scsi1, channel 0, id 1, lun 0 Read (6) 00 07 d7 48 00
> 
> 

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