Re: Tape Drive Problems

[Peter Elsner]

Could be a bad drive, bad tape, bad cable...

Try a new tape and cleaning the drive with a tape cleaning cartridge.

I assume you have rebooted and tried again (just to make sure it wasn't a 
hangup)?

Power down the server, and open up the case, look for loose data cables, or 
loose
SCSI card.  (it happens)...

If everything checks out fine, find another tape drive to test with...

Peter

At 08:22 AM 7/8/2003 -0500, you wrote:
Hi,

I have a Dell PowerEdge server with a RAID 5 and a SCSI tape drive. For the
past two years, the tape drive has worked fine. All of the sudden I get:
  DUMP: Date of this level 0 dump: Mon Jun 16 01:00:00 2003
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/aacd0s1a (/) to /dev/sa0
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 297479 tape blocks.
  DUMP: Cannot open output /dev/sa0.
  DUMP: fopen on /dev/tty fails: Device not configured
  DUMP: The ENTIRE dump is aborted.
When doing a dump. mt status shows:

server1# mt -f /dev/sa0 status
mt: /dev/sa0: Input/output error
Does this sound like a scsi bus problem, or perhaps a bad drive? Anything I
can do to tell for sure what the problem is? Thanks,
Joe

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Re: Tape Drive Problems

[Jerry McAllister]

 
 Hi,
 
 I have a Dell PowerEdge server with a RAID 5 and a SCSI tape drive. For the
 past two years, the tape drive has worked fine. All of the sudden I get:
 
   DUMP: Date of this level 0 dump: Mon Jun 16 01:00:00 2003
   DUMP: Date of last level 0 dump: the epoch
   DUMP: Dumping /dev/aacd0s1a (/) to /dev/sa0
   DUMP: mapping (Pass I) [regular files]
   DUMP: mapping (Pass II) [directories]
   DUMP: estimated 297479 tape blocks.
   DUMP: Cannot open output /dev/sa0.
   DUMP: fopen on /dev/tty fails: Device not configured
   DUMP: The ENTIRE dump is aborted.
 
 When doing a dump. mt status shows:
 
 server1# mt -f /dev/sa0 status
 mt: /dev/sa0: Input/output error

It could be due to just a dirty tape and/or heads, but we have a bunch
of Dell Poweredge servers and occasionally they seem to get in to a weird
condition that looks like this and that seems to require a complete power 
removal to free up.  We have people shut them down and even completely 
remove the power cord and let them set and discharge for a bit - several 
(10 ??) minutes and then restart things.   Often this helps.

We recommend using the cleaning cartridges as rarely as possible - they
seem to abraid the heads, but once in a while stuff gets built up and 
you just have to do it.  Then run one twice and try with a good condition 
(new maybe) tape.

If those two things do not cure it, then you probably need to 
replace the drive or some of the related hardware such as the
SCSI controller.
.
jerry

 
 Does this sound like a scsi bus problem, or perhaps a bad drive? Anything I
 can do to tell for sure what the problem is? Thanks,
 
 Joe
 
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