topic Re: /tcb files gets corrupted in Operating System - HP-UX

/tcb files gets corrupted

gany59 — Wed, 14 Apr 2010 14:08:40 GMT

Hi techiees,

I have a concern like if the /tcb/files gets corrupted , is there any way to restore the whole files from the ignite tape,hence while we take the ignite backup, all the configuration files are there in the ignite tape right ? or how to recover the /tcb/auth/files/r/root .

Please let me know

Re: /tcb files gets corrupted

Pete Randall — Wed, 14 Apr 2010 14:14:42 GMT

As with any files on the ignite tape, they're simply tar'd so you simply skip over the boot headers and then use tar.

For PA-RISC

mt fsf /dev/rmt/1mn 1
then your tar command

For ia64
mt fsf /dev/rmt/1mn 22
then your tar command

Pete

Re: /tcb files gets corrupted

gany59 — Wed, 14 Apr 2010 17:08:54 GMT

thanks for ur quick reply pete,

how to view the files in the ignite tape and what command can we execute to restore the /tcb/auth/files

and what is the meaning for the below command :

For PA-RISC

mt fsf /dev/rmt/1mn 1
then your tar command

For ia64
mt fsf /dev/rmt/1mn 22

fsf is the count what we need to skip, I am not able to get the clear picture what is 1 and 22

Pls help me out on this

Re: /tcb files gets corrupted

Pete Randall — Wed, 14 Apr 2010 17:12:00 GMT

Depending on the architecture of your server (PA-RISC or IA64) the boot header files on the tape are different, thus the "mt" commands to skip over them have to be different.

Once you have skipped over the headers, you can use any tar command. tar -xvf to restore or tar -t to view the contents, for example.

Pete

Re: /tcb files gets corrupted

gany59 — Wed, 14 Apr 2010 18:17:49 GMT

ok pete,

If i use the tar command , where the file is going defaultly, or is there any option to specify the target location

Re: /tcb files gets corrupted

Steven E. Protter — Wed, 14 Apr 2010 20:55:12 GMT

Shalom,

cd /tcb

tar cvf /tmp/tcb.tar *

That will get them all.

SEP

Re: /tcb files gets corrupted

Dennis Handly — Thu, 15 Apr 2010 09:13:59 GMT

>If I use the tar command, where the file is going default

The file will go in a subdirectory of the current directory. If you don't like that, you can either move it after, or use pax(1) which has a -s option to rename file paths.

Re: /tcb files gets corrupted

Horia Chirculescu — Thu, 15 Apr 2010 09:17:09 GMT

>is there any option to specify the target location

There is no tar option for this. Just specify an absolute path for the archive as in the example provided by Steven:

cd /tcb
tar cvf /tmp/tcb.tar *

Best regards,
Horia.

Re: /tcb files gets corrupted

gany59 — Thu, 15 Apr 2010 12:09:37 GMT

Hello Folks,

I am not able to get the clear view, what u people are mentioned below :

cd /tcb
tar cvf /tmp/tcb.tar *

Actually i need to copy the /tcb/ files from the tape archieve.

Then what is the need for the command like

tar cvf /tmp/tcb.tar *

Please let me know, after all ur feedbacks for this question i came to know lot of things.

so pls sort out this also.

Thanks in advance folks..

Re: /tcb files gets corrupted

Horia Chirculescu — Fri, 16 Apr 2010 05:05:22 GMT

Check the following article. Maybe this is what you are looking for (using pax to extract on another location files from an archive with files having absolute path):

http://www.hpug.org.uk/index.php?option=com_content&task=view&id=129&Itemid=59

Horia

Re: /tcb files gets corrupted

Dennis Handly — Fri, 16 Apr 2010 10:22:51 GMT

>I need to copy the /tcb/ files from the tape archive.

As Pete said, you can use mt(1) and tar.

>Then what is the need for the command like

mt fsf /dev/rmt/1mn 1 # PA
cd /
tar -xf /dev/rmt/1mn tcb

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