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Date: Fri, 8 Dec 2000 03:47:29 +0100 (CET)
From: VENESZ Roland <steer@projex.hu>
To: freebsd-questions@FreeBSD.org
Subject: Failure prediction threshold exceeded
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Sender: VENESZ Roland <steer@truffaut.projex.hu>
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Hi list,

I've been searching the list archives for an answer to my question,
found similar stuff, but not exactly this one.

So.
I installed FreeBSD on a box these days, having these (brand new)
SCSI disks:

da0: <IBM-PSG DDYS-T36950M  F S94S> Fixed Direct Access SCSI-3 device 
da0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da0: 34715MB (71096640 512 byte sectors: 255H 63S/T 4425C)
(da1 is exactly the same)

AWRE and ARRE is 1 for both disks.
The controller is an Adaptec 29160 Ultra160 SCSI adapter.

These error messages keep on coming:

(da0:ahc0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0 
(da0:ahc0:0:0:0): RECOVERED ERROR asc:5d,0
(da0:ahc0:0:0:0): Failure prediction threshold exceeded
(da1:ahc0:0:1:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0 
(da1:ahc0:0:1:0): RECOVERED ERROR asc:5d,0
(da1:ahc0:0:1:0): Failure prediction threshold exceeded

and

(da0:ahc0:0:0:0): WRITE(10). CDB: 2a 0 4 3c d9 3f 0 0 1 0 
(da0:ahc0:0:0:0): RECOVERED ERROR asc:5d,0
(da0:ahc0:0:0:0): Failure prediction threshold exceeded
(da1:ahc0:0:1:0): WRITE(10). CDB: 2a 0 4 3c d9 3f 0 0 1 0 
(da1:ahc0:0:1:0): RECOVERED ERROR asc:5d,0
(da1:ahc0:0:1:0): Failure prediction threshold exceeded

I get them when trying to access the drives after some 10 minutes of
inactivity. They never come when the disk is active, or was active in
the last ~10 minutes.
They come in pair for target 0 and 1 since I use vinum :)
Had them before as well, but not in pairs.

These messages aren't like the ones already discussed on the list several
times, they seemingly doesn't have anything to do with bad blocks and
stuff... imho.

Any help is highly appreciated, thanks in advance.

bye,
Roland



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