I had many VXA-1 v17 tapes act this way with amanda with 2 different
internal VXA drives. I have also tried an older external drive that never
showed the behavior. I have since replace the internal drive with VXA-2
(basically, in order to get more capacity out of the tapes I'm reusing)
and the problem has never manifested with the VXA-2 drive.
The problem only ever occurred on the first file header; subsequent file
headers were ok and I have done restores from the tapes, using
mt -f /dev/nst0 rewind
mt -f /dev/nst0 fsf 2
amrestore ....
I never did manage to dig to the bottom of the problem. It did not seem to
be localized to specific tapes (overwriting a tape could sometimes make
the problem go away)
On Mon, 24 Feb 2003 [EMAIL PROTECTED] wrote:
> Hum. I thought the same originally as well. But I have about a
> dozen tapes reacting the same way. Half are new and half are old. I use
> vxa-1 v17 tapes. I find it unlikely that so many are defective/went bad
> all together in one shot. What does your experience say?
>
> robin
>
>
> On Thu, 20 Feb 2003, Gene Heskett wrote:
>
> > On Thu February 20 2003 17:50, [EMAIL PROTECTED] wrote:
> > >This is what I did at the shell...
> > >
> > ># Pop in a tape.
> > >% mt -f /dev/nst0 rewind
> > >% mt -f /dev/nst0 fsf 1
> > >% dd if=/dev/nst0 skip=1 bs=32k | tar tvf -
> > >dd: reading `/dev/nst0': Input/output error
> > >0+0 records in
> > >0+0 records out
> > >
> > ># Let's try another file marker on the same tape.
> > >% mt -f /dev/nst0 rewind
> > >% mt -f /dev/nst0 fsf 10 # I just want to look at the file
> > > header. % dd if=/dev/nst0 count=1 bs=32k
> > >AMANDA: FILE 20030213 host1 /boot lev 1 comp N program /bin/gtar
> > >To restore, position tape at start of file and run:
> > > dd if=<tape> bs=32k skip=1 | /bin/gtar -f... -
> > >
> > >1+0 records in
> > >1+0 records out
> > >
> > >
> > >On the first dd attempt, this showed up in the log:
> > >Feb 20 17:30:24 host1 kernel: st0: Error with sense data: Info
> > > fld=0x8000, Current st09:00: sense key Medium Error Feb 20
> > > 17:30:24 host1 kernel: Additional sense indicates Recorded entity
> > > not found
> > >
> > >
> > >I can read the other file markers...except file marker 1.
> > >
> > >robin
