Nathan Meyers (nmeyers@javalinux.net)
Wed, 12 Jan 2000 06:54:26 -0800
Mohan P wrote:
> I seem to have a trouble with mt. If I specifying any command using 'mt -f
> /dev/pt0' I get an error saying below.
>
> mhn> mt -f /dev/pt0 erase
> pt0: HP COLORADO 5GBe, master, blocksize 512, 2458 MB
> pt0: Unimplemented mt_op 13
> /dev/pt0: invalid argument
Unfortunately, I didn't realize that not all the tape control operations
are implemented by this driver. If you check back for an earlier
response to my response, you'll see an alternate approach that involves
reading the existing tar archive until you hit the end.
Nathan
>
> Hi Nathan,
>
> At 08:10 AM 11/1/2000 -0800, you wrote:
> >To fit additional backups onto the tape, you can use the "mt" command to
> >position the tape past the last thing you've put on the tape. Example:
> >
> > mt -f <tape_drive> eod
> >
> >where <tape_drive> is the non-rewinding tape device.
> >
> >
> >Doing incremental backups is a matter of choosing which files to back up
> >and which not to. Tar isn't especially helpful there, but using "find"
> >and "cpio" together is one way to do it. You can get an overview of many
> >available backup utilities, some of which include incremental
> >capabilities, by looking at:
> >
> >
> >http://stommel.tamu.edu/~baum/linuxlist/linuxlist/node9.html#backupsoftware
> >
> >Nathan Meyers
> >nmeyers@javalinux.net
>
> Thanks very much for your reply, I think I am enlightened about the fact
> of using 'Tar' and 'cpio'. I am really impressed (actually only learnt
> today) by the way tar and cpio works. I am trying to implement 'tar'. The
> url specified was also informative enough.
> I seem to have a trouble with mt. If I specifying any command using 'mt -f
> /dev/pt0' I get an error saying below.
>
> mhn> mt -f /dev/pt0 erase
> pt0: HP COLORADO 5GBe, master, blocksize 512, 2458 MB
> pt0: Unimplemented mt_op 13
> /dev/pt0: invalid argument
> mhn>
>
> Does that mean that this feature( all most all ) is/are not available. Can
> you please correct me with this.
>
> Thanks very much.
>
> With Regards
>
> Mohan P
>
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This archive was generated by hypermail 2.0b3 on Wed 12 Jan 2000 - 09:59:46 EST