🚀 go-pugleaf

James,

sounds like it's all working just fine.

Have you tried # mt erase ?

Note that while it erases the tape I've found that it goes into a state
where you can't stop the job until it's done and it can take a long time to
complete.

Then to do a backup, with tar, something like what you said.

I've used BRU for backup and it's dead simple. I'd amanda looks good but ran
into a problem on a large drive for some reason.

I'd be interested to hear what you come up with.

peter


James Mandy <jamesm@wantree.com.au> wrote in message
news:7qt39i$143$1@centipede.wantree.com.au...
> Ive managed to get my linux box to detect the just installed HP DDS-2 tape
> drive.
> It comes up in the kernel like this.
>
>   Vendor: HP        Model: HP35470A          Rev: 1009
>   Type:   Sequential-Access                  ANSI SCSI revision: 02
> Detected scsi tape st0 at scsi0, channel 0, id 0, lun 0
>
> No problem. Now.
>
> I look in /dev and I indeed have /dev/tape which is pointing to /dev/st0
no
> worries. normal.
>
> Now, where to from here?
>
> If I do an "mt status" I get this. With or without a tape in the drive.
>
> SCSI 2 tape drive:
> File number=-1, block number=-1, partition=0.
> Tape block size 0 bytes. Density code 0x0 (default).
> Soft error count since last status=0
> General status bits on (10000):
>  IM_REP_EN
>
> NO other MT commands work? I cant rewind it, I cant do anything with it?
The
> only other MT command I have managed to get to work is "MT LOAD" which
> ejects a tape if there is a tape in the drive.
>
> My question is. Where do I go from here? How can I erase this tape? How
can
> I do a simple backup eg "tar cvf /etc /dev/st0" or something "shrug"
>
> Any help greatly appreciated.
>
> P.S what tape backup software would you reccommend? I've looked at Arkeia,
> and it looks pretty good, has windows client too, so I can admin it from
> winblows box...
>
> Cheers, James
>
>

Peter Marks wrote:

> James,
>
> sounds like it's all working just fine.
>
> Have you tried # mt erase ?
>
> Note that while it erases the tape I've found that it goes into a state
> where you can't stop the job until it's done and it can take a long time to
> complete.
>
> Then to do a backup, with tar, something like what you said.
>
> I've used BRU for backup and it's dead simple. I'd amanda looks good but ran
> into a problem on a large drive for some reason.
>
> I'd be interested to hear what you come up with.
>
> peter
>
> James Mandy <jamesm@wantree.com.au> wrote in message
> news:7qt39i$143$1@centipede.wantree.com.au...
> > Ive managed to get my linux box to detect the just installed HP DDS-2 tape
> > drive.
> > It comes up in the kernel like this.
> >
> >   Vendor: HP        Model: HP35470A          Rev: 1009
> >   Type:   Sequential-Access                  ANSI SCSI revision: 02
> > Detected scsi tape st0 at scsi0, channel 0, id 0, lun 0
> >
> > No problem. Now.
> >
> > I look in /dev and I indeed have /dev/tape which is pointing to /dev/st0
> no
> > worries. normal.
> >
> > Now, where to from here?
> >
> > If I do an "mt status" I get this. With or without a tape in the drive.
> >
> > SCSI 2 tape drive:
> > File number=-1, block number=-1, partition=0.
> > Tape block size 0 bytes. Density code 0x0 (default).
> > Soft error count since last status=0
> > General status bits on (10000):
> >  IM_REP_EN
> >
> > NO other MT commands work? I cant rewind it, I cant do anything with it?
> The
> > only other MT command I have managed to get to work is "MT LOAD" which
> > ejects a tape if there is a tape in the drive.
> >
> > My question is. Where do I go from here? How can I erase this tape? How
> can
> > I do a simple backup eg "tar cvf /etc /dev/st0" or something "shrug"
> >
> > Any help greatly appreciated.
> >
> > P.S what tape backup software would you reccommend? I've looked at Arkeia,
> > and it looks pretty good, has windows client too, so I can admin it from
> > winblows box...
> >
> > Cheers, James
> >
> >

Be sure to specify the device when using mt ie;

        mt -f /dev/st0 erase
        mt -f /dev/st0 status
        mt -f /dev/nst0 rewoffl

Another thing. Your tar command is the wrong way round. Try tar cvf /dev/st0
/etc

The device should follow the 'f' option.


Hope this helps.


Cheers,
Brian.

> I've used BRU for backup and it's dead simple. I'd amanda looks good but ran
> into a problem on a large drive for some reason.

I think BRU is a commercial package isn't it? The Official RedHat distro
+ goodies CD includes a BRU evaluation version I think.

Everything I try gives me:

Cannot write to /dev/st0: Input/output error
or
/dev/st0: Input/output error
when doing mt commands.

I just changed some jumpers on the drive to see if it was that, but its
still not working for me.. ideas?

Cheers, James

pk <thanhmy@ihug.com.au> wrote in message
news:7qv7l7$kvg$1@toto.tig.com.au...
> tar -cvf /dev/st0 /tmp  (or what ever directory you want)

tar -cvf /dev/st0 /tmp  (or what ever directory you want)




James Mandy wrote in message <7qt39i$143$1@centipede.wantree.com.au>...
>Ive managed to get my linux box to detect the just installed HP DDS-2 tape
>drive.
>It comes up in the kernel like this.
>
>  Vendor: HP        Model: HP35470A          Rev: 1009
>  Type:   Sequential-Access                  ANSI SCSI revision: 02
>Detected scsi tape st0 at scsi0, channel 0, id 0, lun 0
>
>No problem. Now.
>
>I look in /dev and I indeed have /dev/tape which is pointing to /dev/st0 no
>worries. normal.
>
>Now, where to from here?
>
>If I do an "mt status" I get this. With or without a tape in the drive.
>
>SCSI 2 tape drive:
>File number=-1, block number=-1, partition=0.
>Tape block size 0 bytes. Density code 0x0 (default).
>Soft error count since last status=0
>General status bits on (10000):
> IM_REP_EN
>
>NO other MT commands work? I cant rewind it, I cant do anything with it?
The
>only other MT command I have managed to get to work is "MT LOAD" which
>ejects a tape if there is a tape in the drive.
>
>My question is. Where do I go from here? How can I erase this tape? How can
>I do a simple backup eg "tar cvf /etc /dev/st0" or something "shrug"
>
>Any help greatly appreciated.
>
>P.S what tape backup software would you reccommend? I've looked at Arkeia,
>and it looks pretty good, has windows client too, so I can admin it from
>winblows box...
>
>Cheers, James
>
>

James Mandy wrote:
> 
> Everything I try gives me:
> 
> Cannot write to /dev/st0: Input/output error
> or
> /dev/st0: Input/output error
> when doing mt commands.
> 
> I just changed some jumpers on the drive to see if it was that, but its
> still not working for me.. ideas?

I've got a HP35480A and I've been having nothing but trouble
since I purchased it (had success with a conner DAT though :).
Basically, I can't succesfully read or write to or from a DAT -
between I/O errors and SCSI bus timeouts, nothing works. Trying
to view or extract a tar on a DAT I'd made earlier, sends the
drive off (presumably reading) for a while. Despite using the
'v' option with tar, I get no feedback, and the drive just sits
there, reading a bit, going 'clunk', sometimes rewinding a
little, then reading again - and so on. Eventually, I get some
sort of SCSI timeout. <sigh>

The conner drive works fine... (and the DAT's themselves are
fine)

So: does your drive actually make any motions when you send
either mt or tar commands to it? If not, then it could be
perhaps a SCSI configuration error. If so, then it could be a
'HP error' like I'm getting :/

And as a side-note, could anyone recommend what SCSI settings I
should be using with such a tape drive? I haven't been able to
find out much on the web, and I'm looking for recommendations
for such values as 'Command Queueing' and 'Synchronous
Transfers' - what do tape drives usualy take for SCSI settings?

Well, hope you have more luck than me :)

Cheers,

________________________________________________________________________
 Giulio Harding                              
giulio@cs.adelaide.edu.au
 Systems Administrator                            Phone: +618
8303 6182 
 Department of Computer Science               Voicemail: +618
8394 0643
 University of Adelaide, South Australia

 "In the beginning, the Universe was created. This made a lot of
people
  very angry and was widely regarded as a bad move." - Douglas
Adams

>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 9/6/99, 10:07:08 PM, Giulio Harding <giulio@cs.adelaide.edu.au> wrote 
regarding Re: SCSI Tape, help:



> And as a side-note, could anyone recommend what SCSI settings I
> should be using with such a tape drive? I haven't been able to
> find out much on the web, and I'm looking for recommendations
> for such values as 'Command Queueing' and 'Synchronous
> Transfers' - what do tape drives usualy take for SCSI settings?

I used to have a lot of bus hangs with a Seagate SCSI DAT drive, until 
I changed the SCSI settings to Asynchronous transfer, I've not had any 
problems since even with single backups that fill almost the whole 
tape which wouldn't have got 10% done before.

James

+------------------------+-------------------------------+---------+
| James Tappin           | School of Physics & Astronomy |  O__    |
| sjt@star.sr.bham.ac.uk | University of Birmingham      | --  \/` |
| Ph: 0121-414-6462. Fax: 0121-414-3722                  |         |
+--------------------------------------------------------+---------+

<Rado.Faletic@anu.edu.au> wrote in message
news:37D32E3F.ACCEC1DD@anu.edu.au...
>
> > I've used BRU for backup and it's dead simple. I'd amanda looks good but
ran
> > into a problem on a large drive for some reason.
>
> I think BRU is a commercial package isn't it? The Official RedHat distro
> + goodies CD includes a BRU evaluation version I think.

An earlier Redhat 5.2? came with a single user license of BRU that was not a
demo. I don't think that's the case any more.

These days, we've gone back to tar which even does incrementals all on its
own.

peter