From: "Roland Boden" <[EMAIL PROTECTED]>
I have some real problems running a scsi tape with Linux. Until now I had to
restore/reinstall
Linux about five times because the file system was heavily damaged.
This severe problems I had with the following configuration:
PC with Cyrix CPU 120 Mhz, 48 MB RAM
Linux SuSE distribution 5.2 (later 6.2) with kernel version 2.0.33/2.0.36 (later
2.2.10)
One scsi host adapter Adaptec 1542 with the following devices:
|------------+--------------------------------|
|id |device |
|------------+--------------------------------|
|0 |HD: |
| |IBM Model: DCAS-34330 Rev: S65A |
|------------+--------------------------------|
|2 |Tape: |
| |HP Model: C1533A Rev: A708 |
|------------+--------------------------------|
|3 |Cdrom: |
| |TOSHIBA Model: CD-ROM XM-5701TA|
| |Rev: 1557 |
|------------+--------------------------------|
|7 |host adapter |
|------------+--------------------------------|
I setup everything using the "SCSI checklist" from SuSE. I also disabled "sync
negotiation" and
"allow disconnect" in the host adapter BIOS.
Sometimes when running a backup program the sytem crashed and could only be
rebooted by a
hardware reset. The file system check reported a lot of errors and tried to repair
but very
much files were destroyed or the file system couldn't even be repaired.
OK, thats history because I now have a different host adapter. Kurt Garloff told
me that the
Adaptec host isn't very reliable and may cause problems like that I have.
Hmm. The Adaptec 1542 is old and slow, but unreliable? Thousands of Linux users
have used this host adapter for many years, essentially without problems.
(The driver interacts badly with the rest of the SCSI subsystem: as soon as
something went wrong, one would get a long series of `resetting SCSI bus' errors
that would end in a system crash. But as long as no I/O errors occurred, everything
was fine - the 1542 works reliably on good hardware.)
So, if you find destroyed file systems and the like, something is bad,
and it seems unlikely to me that this is the Adaptec's fault.
(Standard questions: Is termination OK? Are cables not too long?
Your memory isnt rotten? Never a Signal 11 during a gcc compile?)
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