Hi
Two problems I am looking to solve, sort of a "low-grade" EMERGENCY ...
I have to recover files from a backup tape that was made on a VA-Linux
box on DDS-4 tapes.
1) I have a couple of PCs running RedHat Linux 6.1 and 6.2. I have the
tape drive (a Seagate) that made the backups and am hooking it up on my
SCSI chain. Linux can see the drive and can use it to read DDS-3 tapes
just fine so I do not think that there is a SCSI
chain/cabling/termination problem. But when I put in one of the DDS-4
tapes that were created on this drive "mt status" on the drive tells me
"density 0x26 unknown density for this mt" and I can rewind/eject the
tape but if I try to read the tape I get an IO error.
The drive is SCSI-3 (?) 68 pin. The SCSI controller in my machine is a
SCSI-2 (HD50) connector.
2) So... I hooked it up to a VA--Linux box that has the same (68 pin)
SCSI controller. I can write to the tape but any command to read the
tape, including "mt status" hangs. I can not kill the process (i.e. the
"mt" command) but if I pull and reseat the SCSI terminator on the drive
it will SOMETIME release the process that is accessing the drive.
Is there something I have to do to use the DDS-4 tapes on the standard
RedHat 6.x distributions? Is the "unknown density" the reason for my IO
Errors?
Does anyone have a clue about the weird lockups on the VA-Linux box? I
booted the same machine with a DOS diskette and ran some Seagate
diagnostics that do read-write tests and the diagnostics say that the
drive is fine.
TIA
---Raymond
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