Hi,

14.10.2008 11:54, Stefan Lubitz wrote:
> Hi all,
> 
> I have a strange behavior when I run btape.
> The test abborts at different positions. Sometimes it runs completely. 
> Sometimes it stops after the rewind or after the "Got EOF on tape".
> I have no idea where I can search what's wrong. The strange thing is, 
> that I was able to write (bconsole / run a job) on two tapes.
> After writing I tried to restore the job, but the restore failed. So I 
> started from beginning with testing my Autoloader.
> And guess what......... It failed.

Looks like a hardware-related problem.

> If I write an EOF manually (mt -f /dev/nst0 weof), the the test will 
> work one time. The second time it fails again.
> Is this normal?
> 
> I start btape with the following syntax:
> btape -c /dev/bacula/bacula-sd.conf -v -d 6 /dev/nst0
> 
> Here ist the btape output:
> btape: btape.c:831 Wrote 1000 blocks of 64412 bytes.
> btape: btape.c:505 Wrote 1 EOF to "Drive-1" (/dev/nst0)
> btape: btape.c:847 Wrote 1000 blocks of 64412 bytes.
> btape: btape.c:505 Wrote 1 EOF to "Drive-1" (/dev/nst0)
> btape: btape.c:856 Rewind OK.
> 1000 blocks re-read correctly.
> Got EOF on tape.
> 
> Here is the Error Message:
> btape: btape.c:856 Rewind OK.
> 13-Oct 15:08 btape JobId 0: Error: block.c:999 Read error on fd=3 at 
> file:blk 0:976 on device "Drive-1" (/dev/nst0). ERR=Input/output error.
> btape: btape.c:868 Read block 977 failed! ERR=Input/output error
> 
> Next try, same result:
> 13-Oct 16:33 btape JobId 0: Error: block.c:999 Read error on fd=3 at 
> file:blk 1:897 on device "Drive-1" (/dev/nst0). ERR=Input/output error.
> btape: btape.c:868 Read block 1898 failed! ERR=Input/output error
> 
> Can you please help me, where I can start to investigate?

Start by having a look into the system's log - there might be errors 
reported there.

This might be a broken tape drive, bad cabling or termination, or a 
rancid tape.

Also, tapelerts might be present for the tape drive - you can see them 
using smartmontools or the tapealert program.

Arno

> Thanks,
> Stefan
> 

-- 
Arno Lehmann
IT-Service Lehmann
Sandstr. 6, 49080 Osnabrück
www.its-lehmann.de

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