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Date:      Wed, 31 Mar 1999 12:08:20 +0100
From:      Karl Pielorz <kpielorz@tdx.co.uk>
To:        freebsd-scsi@freebsd.org
Subject:   SYNCHRONIZE CACHE - Illegal Request? OK?
Message-ID:  <37020224.3FB82DC0@tdx.co.uk>

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Hi,

My recent -current box keeps spitting these out, usually before immanent death
/ panic's (I think it's been doing this since it was installed)...

"
syncing disks... 18 16 5 done
(da0:ahc0:0:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0
(da0:ahc0:0:0:0): ILLEGAL REQUEST asc:20,0
(da0:ahc0:0:0:0): Invalid command operation code
(da1:ahc0:0:1:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0
(da1:ahc0:0:1:0): ILLEGAL REQUEST asc:20,0
(da1:ahc0:0:1:0): Invalid command operation code
"

I presume what it's trying to tell me is that the two drives in question (both
ageing Quantum's) don't support the SCSI 'sync. cache' command? - And I guess
this is 'mostly harmless'? Apart from the obvious 'you just probably lost any
pending data in the cache'?

The drives in question both ID as:

da0: <QUANTUM FIREBALL1080S 1Q08> Fixed Direct Access SCSI-2 device
da0: 10.000MB/s transfers (10.000MHz, offset 8)
da0: 1042MB (2134305 512 byte sectors: 64H 32S/T 1042C)
da1: <QUANTUM FIREBALL1080S 1Q08> Fixed Direct Access SCSI-2 device
da1: 10.000MB/s transfers (10.000MHz, offset 8)
da1: 1042MB (2134305 512 byte sectors: 64H 32S/T 1042C)

A friend thought these might have been suppressed in recent -current's etc.? -
but even my 'really recent' -current system seems to display them...

Regards,

Karl


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