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Full Discussion: From HPUX tar to Linux tar
Special Forums Hardware Filesystems, Disks and Memory From HPUX tar to Linux tar Post 15154 by iarot on Monday 11th of February 2002 12:28:17 PM
Old 02-11-2002
Question From HPUX tar to Linux tar
Dear sirs,

I have some 4mm dat cartridges (4GB) made in a HP-UX 11.00 with a standard tar command (tar -cv files_to_backup) made with a scsi dat drive HP 35470A.

After more than one year I need to restore some data on a linux system (Red Hat 7.2) which has the same dat drive.

Now I tried to list the content of the cartridges but without any result.
In particular I used the following command:

$tar -tvf /dev/st0

After this command the lights on the tape driver blink and the tape run. But after 3-4 seconds everything stop and the prompt $ apper after the above command whithout any other message.
I tried also to use the following command

$tr -tvbf n /dev/st0

replacing n with different numbers (1-10-20-512)
but with the same result.
I tried all the above also as "su" and with other similar cartidges.

After the first blink and run of the tape driver if I repeat the command I get istantly the prompt symbol $ without any activity on the tape. To have a new activity (blink for some seconds) I have to extract and re-insert the tape.

Please, what I can do to list (and extract) my files from the catridges? What else can I try?
Thanks
 

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LEARN ABOUT DEBIAN

tapeinfo

TAPEINFO(1)						      General Commands Manual						       TAPEINFO(1)

NAME

       tapeinfo - report SCSI tape device info

SYNOPSIS

       tapeinfo -f <scsi-generic-device>

DESCRIPTION

       The  tapeinfo  command  reads  various information from SCSI tape drives that is not generally available via most vendors' tape drivers. It
       issues raw commands directly to the tape drive, using either the  operating  system's  SCSI  generic  device  (	e.g.  /dev/sg0	on  Linux,
       /dev/pass0 on FreeBSD) or the raw SCSI I/O ioctl on a tape device on some operating systems.

       One  good  time	to  use 'tapeinfo' is immediately after a tape i/o operation has failed. On tape drives that support HP's 'tapealert' API,
       'tapeinfo' will report a more exact description of what went wrong.

       Do be aware that 'tapeinfo' is not a substitute for your operating system's own 'mt' or similar tape driver control program. It is intended
       to supplement, not replace, programs like 'mt' that access your operating system's tape driver in order to report or set information.

OPTIONS

       The first argument, given following -f , is the SCSI generic device corresponding to your tape drive.  Consult your operating system's doc-
       umentation for more information (for example, under Linux these are generally start at /dev/sg0 under FreeBSD these start at /dev/pass0).

       Under FreeBSD, 'camcontrol devlist' will tell you what SCSI devices you have, along with which 'pass' device controls  them.  Under  Linux,
       "cat /proc/scsi/scsi" will tell you what SCSI devices you have.

BUGS AND LIMITATIONS

       This program has only been tested on Linux with a limited number of tape drives (HP DDS4, Seagate AIT).

AVAILABILITY

       tapeinfo  is  currently	being maintained by Robert Nelson <robertnelson@users.sourceforge.net> as part of the 'mtx' suite of programs. The
       'mtx' home page is http://mtx.sourceforge.net  and  the	actual	code  is  currently  available	there  and  via  SVN  from  http://source-
       forge.net/projects/mtx.

SEE ALSO

       mt(1),mtx(1),scsitape(1),scsieject(1),loaderinfo(1)

								    TAPEINFO1.0 						       TAPEINFO(1)
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