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Date:      Sat, 14 Mar 1998 17:51:06 -0500
From:      Douglas Hedges <hedges@atlantic.edu>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Can't set TR4 tape blocksize
Message-ID:  <l0311070eb130b429ad72@[192.133.105.31]>

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Running 2.2.5; m'board is ASUS P55T2P4S (on-board SCSI).  When querying my
HP TR4i tape drive I get:

# mt status
Present Mode:   Density = 0x45         Blocksize = 512 bytes
---------available modes---------
Mode 0:         Density = 0x00         Blocksize variable
Mode 1:         Density = X3.136-1986  Blocksize = 512 bytes
Mode 2:         Density = X3.39-1986   Blocksize variable
Mode 3:         Density = X3.54-1986   Blocksize variable


But when trying to set a variable blocksize I get the following:

# mt blocksize 0

Mar 14 17:18:27 redphone /kernel: st0(ahc0:4:0): ILLEGAL REQUEST asc:26,0
Invalid field in parameter list
Mar 14 17:18:27 redphone /kernel: st0: Cannot set selected mode

I've had no problems issuing this identical command on another host w/a
Seagate TR4 running release 2.2.2.  No doubt there's a lacuna in my
understanding of things tape and SCSI but ...

TIA

DH
hedges@atlantic.edu



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