topic Re: cpio in Operating System - HP-UX

cpio

Prathap_1 — Mon, 11 Mar 2002 18:10:13 GMT

Hi
I am trying to read the contents of the tape with the cpio -icBvt /dev/rmt/1m. It is getting hanged there. Can anyone help me out. Help me out in extracting the tape to disk.

Thanks
Prathap.

Re: cpio

harry d brown jr — Mon, 11 Mar 2002 18:11:46 GMT

DO this:

dd if=/dev/rmt/1m of=/large_diskarea

live free or die
harry

Re: cpio

Sanjay_6 — Mon, 11 Mar 2002 18:14:12 GMT

Hi Pratap,

Try

cpio -itBv < /dev/rmt/1m

Are you using the redirector "<". Also You are using the "c" as well as "t" option,

c --> Copy (extract)
t --> List Contents (No extract)

Try this,

cpio -itBvdl < /dev/rmt/1m
to list contents of tape

cpio -icBvdul < /dev/rmt/1m
to extract contents of tape to disk. Keep an eye on the path it is extracting to.

Hope this helps.

Regds

Re: cpio

S.K. Chan — Mon, 11 Mar 2002 18:25:27 GMT

You must use the same options to read the tape that were used to write it.
# cpio -itcvB < /dev/rmt/1m
should work.

Re: cpio

Prathap_1 — Mon, 11 Mar 2002 18:25:34 GMT

Hi Sanjay
Thanks for the info. I have tried the options given by you. I am getting the error called 'Out of Phase--get help', Perhaps the C option should not be used.

Thanks
Prathap.

Re: cpio

H.Merijn Brand (procura — Mon, 11 Mar 2002 18:27:49 GMT

don't forget the (too large) block size in order not to miss any bits:

dd if=./dev/rmt/1m ibs=102400 of=tape.cpio
file tape.cpio

if cpio still has trouble reading the data, try to use GNU's version of cpio and omit the -c argument. GNU's cpio will try to find out itself and understands more cpio formats than native HP-UX cpio.

GNU cpio can be found and installed from e.g. ftp://download.xs4all.nl/pub/mirror/gnu/cpio/cpio-2.4.2.tar.gz (I couln't find a precompiler binary for HP-UX)

Re: cpio

Sanjay_6 — Mon, 11 Mar 2002 18:34:08 GMT

Hi Pratap,

Try these links,

http://us-support3.external.hp.com/cki/bin/doc.pl/sid=a8192c390200bbbf49/screen=ckiDisplayDocument?docId=200000007948508

http://us-support3.external.hp.com/cki/bin/doc.pl/sid=a8192c390200bbbf49/screen=ckiDisplayDocument?docId=200000024598480

Hope this helps.

Regds

Re: cpio

Prathap_1 — Mon, 11 Mar 2002 18:48:06 GMT

Hi Sanjoy
I tried the solutions given in the links. Still I am getting the error. If I specify the 'c' option, I am getting the error C option should not be used. I I did't specify the 'c' option, I am getting the error 'C' option should be used.

Thanks
Prathap.

Re: cpio

H.Merijn Brand (procura — Mon, 11 Mar 2002 18:53:34 GMT

Here's a precompiled GNU cpio binary

put it somewhere in your path and issue

# ncpio --io-size=102400 -i -t -v
and tell us what happens

Re: cpio

Aftab Sadiq — Mon, 11 Mar 2002 18:56:42 GMT

Hi Prathap,
Did you rewind the tape first? Rewind the tape first with
mt -t /dev/rmt/1m rew
and then use cpio command to list the contents

I hope this will help

Aftab

Re: cpio

H.Merijn Brand (procura — Mon, 11 Mar 2002 18:57:13 GMT

Tried myself to pick up that binary, but got a 404, maybe this helps

# cd /tmp
# gzip -d # ncpio --io-size=102400 -i -t -v

Re: cpio

Sanjay_6 — Mon, 11 Mar 2002 19:05:20 GMT

Hi Pratap,

ARe you able to list the contents of the archive.

cpio -itBvdul < /dev/rmt/1m

If you are able to do so, then try,

cpio -icBvdulR
You could be having a media problem. Have you tried with another media. Or you can try this media on another server.

Hope this helps.

Regds

Re: cpio

jd-gt — Mon, 11 Mar 2002 19:27:10 GMT

One person suggested the below. Do you need to
rewind the tape inbetween the list command and the extract command?

mt -t /dev/rmt/1m
cpio -itBvdul < /dev/rmt/1m

If you are able to do so, then try,

mt -t /dev/rmt/1m
cpio -icBvdulR

Re: cpio

Prathap_1 — Mon, 11 Mar 2002 19:27:57 GMT

Hi Procura
Can you let me know where can I get the ncpio utility.

Thanks
Prathap.

Re: cpio

Prathap_1 — Mon, 11 Mar 2002 19:39:09 GMT

Hi
I have tried all the solutions, still I am not able to read the contents of the tape.

Thanks
Prathap.

Re: cpio

Sanjay_6 — Mon, 11 Mar 2002 19:41:59 GMT

Hi Pratap,

Try this,

dd if=/dev/rmt/1m ibs=1024k obs=1k | cpio -it

Hope this helps.

Regds

Re: cpio

Prathap_1 — Mon, 11 Mar 2002 19:59:43 GMT

Hi Sanjay
I have tried but still getting the same error.

Thanks
Prathap.

Re: cpio

melvyn burnard — Mon, 11 Mar 2002 20:03:19 GMT

Have you tried using the pax command?
pax (Portable Archive eXchange) is able to read and save both tar and cpio format tapes.

man pax for examples.

Re: cpio

Prathap_1 — Mon, 11 Mar 2002 20:05:05 GMT

Hi Melvyn
Yeah. I have tried pax -r -f /dev/rmt/1m. Still I am not able to read the tape.

Thanks
Prathap.

Re: cpio

Darrell Allen — Mon, 11 Mar 2002 20:57:50 GMT

Hi Prathap,

Maybe I missed this, but what was the complete command line used to create the cpio archive?

Darrell