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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 BSD

tm

TM(4)							     Kernel Interfaces Manual							     TM(4)

NAME

       tm - TM-11/TE-10 magtape interface

SYNOPSIS

       /sys/conf/SYSTEM:
	    # Setting AVIVTM configures the TM driver for the AVIV 800/1600/6250
	    # controller.  For more details, see /sys/pdpuba/tm.c.
	    NTM    tm_drives # TM11
	    AVIVTM YES	     # AVIV 800/1600/6250 controller

       /etc/dtab:
	    #Name Unit# Addr   Vector Br Handler(s)	 # Comments
	    tm	  ?	172520 224    5  tmintr 	 # tm11 driver

       major device number(s):
	    raw: 7
	    block: 1
       minor device encoding:
	    bits 0003 specify TS drive
	    bit  0004 specifies no-rewind operation
	    bits 0030 specify recording density:
		 0000:	 800BPI
		 0010:	1600BPI (AVIVTM and some other controllers)
		 0020:	6250BPI (AVIVTM only)

DESCRIPTION

       The  tm-11/te-10 combination provides a standard tape drive interface as described in mtio(4).  The standard DEC tm-11 operates only at 800
       bpi.  Other controllers of this type may also allow operation at 1600 bpi, under software control or by switching manually.

FILES

       /dev/MAKEDEV	   script to create special files
       /dev/MAKEDEV.local  script to localize special files

SEE ALSO

       mt(1), tar(1), tp(1), mtio(4), ht(4), ts(4), mt(4), dtab(5), autoconfig(8)

DIAGNOSTICS

       te%d: no write ring.  An attempt was made to write on the tape drive when no write ring was present; this message is written on the  termi-
       nal of the user who tried to access the tape.

       te%d:  not  online.   An  attempt was made to access the tape while it was offline; this message is written on the terminal of the user who
       tried to access the tape.

       te%d: can't change density in mid-tape.	An attempt was made to write on a tape at a different density than  is	already  recorded  on  the
       tape.  This message is written on the terminal of the user who tried to switch the density.

       te%d:  hard  error  bn%d  er=%b.    A tape error occurred at block bn; the tm error register is printed in octal with the bits symbolically
       decoded.  Any error is fatal on non-raw tape; when possible the driver will have retried the operation which failed  several  times  before
       reporting the error.

       te%d:  lost  interrupt.	A tape operation did not complete within a reasonable time, most likely because the tape was taken off-line during
       rewind or lost vacuum.  The controller should, but does not, give an interrupt in these cases.  The device will	be  made  available  again
       after this message, but any current open reference to the device will return an error as the operation in progress aborts.

BUGS

       If any non-data error is encountered on non-raw tape, it refuses to do anything more until closed.

3rd Berkeley Distribution					 January 28, 1988							     TM(4)
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