troubleshooting tape

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On Friday 07 November 2003 10:46 pm, Bob Holtzman wrote:
> I just had a Seagate Tapestor 40Gb Travan drive installed in my

I am not familiar with Travan drives BUT, let's see if my guesses might spu=
r=20
your thoughts.

> RH7.3 box. The drive is detected on /dev/ht0 which is correct.
> When I ran mt -f /dev/ht0 reten it returned an message aboutan I/O
> error and an unrecoverable error. When I tried to create an archive

I don't know about this error. Do you have more information? Did the tape=
=20
activity light blink so you know it was hit with a command?

> ( I should have known better ) I got:
>
> [root@localhost root]# tar cvf /dev/ht0 home
> tar: home: Cannot stat: No such file or directory
> tar: /dev/ht0: Wrote only 0 of 10240 bytes
> tar: Error is not recoverable: exiting now

=2D From your command line prompt, "[root@localhost root]" I assume you wer=
e in=20
the /root directory. The command line that you issued requested the backup=
=20
of the /root/home directory. Does this directory exist? Did you mean to=20
backup the /home directory instead?

> /var/log/messages showed:
>
> Nov 7 22:12:24 localhost su(pam_unix)[5745]: session opened for user root
> by holtzm(uid=3D500)
> Nov 7 22:13:06 localhost kernel: ide-tape: ht0: I/O error, pc =3D a, ke=
y =3D=20
> 5, asc =3D 22, ascq =3D 0

The key, asc and ascq values are response codes. In this case 5,22,0. I=20
believe they are actually hexidecimal values, at least they would be in the=
=20
SCSI world. A key value of 5 indicates an illegal request. The asc and as=
cq=20
are extended sense key codes indicating that the illegal request was an=20
illegal function. (Seagate has some pretty extensive drive documentation o=
n=20
their support site. Go try them. These key code values are at:=20
http://www.seagate.com/support/kb/disc/scsi_sense_keys.html and the extende=
d=20
key values are at:=20
http://www.seagate.com/support/kb/disc/scsi_sense_error12-13.html. Look=20
around there some more as there may be lots of information for your=20
particular drive. Maybe start here in the "Disc Knowledge Base"=20
http://www.seagate.com/support/kb/disc/index.html).

Anyway, that's what I can give. I don't know why the request was illegal b=
ut=20
then if the directory did not exist, maybe tar told the tape to do somethin=
g=20
it could not do.

Alan
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