topic Re: tar backup in Operating System - HP-UX

tar backup

Cheung_2 — Tue, 14 Jan 2003 11:06:49 GMT

I would like to use tar to backup our system, how can I verify whether the backup is successful or not? Thx.

Re: tar backup

Ravi_8 — Tue, 14 Jan 2003 11:10:35 GMT

Hi, guys

Think twice before answering this guy posting.
I never seen this guy assigning point

Re: tar backup

Armin Feller — Tue, 14 Jan 2003 11:15:51 GMT

Hi,

check the syslogfile for error messages during tar process and after creating the tape you can have a look which datas are on the tape by PSEUDO restore:

# tar tv
or
# tar tvf
or
# tar tv > /tmp/index

Regards ...
Armin

Re: tar backup

M.Kantharuban — Tue, 14 Jan 2003 11:19:07 GMT

u can list the files from the backup tape u have taken by
'tar tvf '

see man pages for more details

ruban

Re: tar backup

Jose Mosquera — Tue, 14 Jan 2003 11:29:53 GMT

Hi,

Always that a unix command have been executed return a code, if this code is cero (0) this mean that have been successfully, other code means non-successfully execution status. This return code is stored in $? environment variable, to answer for this do:

tar
if [$? -eq 0 ]
then
echo "tar successfully"
else
echo "tar have warnings or errors"
fi

Rgds.

Re: tar backup

Jose Mosquera — Tue, 14 Jan 2003 11:30:30 GMT

Hi,

Always that a unix command have been executed return a code, if this code is cero (0) this mean that have been successfully, other code means non-successfully execution status. This return code is stored in $? environment variable, to answer for this do:

tar
if [ $? -eq 0 ]
then
echo "tar successfully"
else
echo "tar have warnings or errors"
fi

Rgds.

Re: tar backup

Cheung_2 — Tue, 14 Jan 2003 12:14:36 GMT

hi Jose Maria Mosquera ,

thx r reply, i hv tried r script, but it pop up the below the message everytime "./c: [0: command not found
tar have warnings or errors" , can suggest how to fix it ? thx.

Re: tar backup

Jochen Heuer — Tue, 14 Jan 2003 12:19:07 GMT

Hi Cheung,

maybe this helps:

http://66.216.15.50/ITRCForumsEtiquette/

Re: tar backup

Jose Mosquera — Tue, 14 Jan 2003 12:20:31 GMT

Hi,

Really, I've tried and work fine, pls take note about my last reply wherw "if" statament have a space, this is teh correct sintax:

tar
if [ $? -eq 0 ] <-- correction!
then
echo "tar successfully"
else
echo "tar have warnings or errors"
fi

Rgds, and tell me about!

Re: tar backup

Jochen Heuer — Tue, 14 Jan 2003 12:22:16 GMT

You can also try this:

$ tar cvf /archive.tar files || echo "tar failed"

Re: tar backup

harry d brown jr — Tue, 14 Jan 2003 12:53:41 GMT

Cheung,

You should take care of this:

This member has assigned points to 98 of 186 responses to his/her questions.

You can find your previous posts in your profile:

http://forums.itrc.hp.com/cm/TopSolutions/1,,CA877098!1!questions,00.html

It's pathetic that you have to be continously reminded!

live free or die
harry

Re: tar backup

Shannon Petry — Tue, 14 Jan 2003 13:48:59 GMT

First, you can use the return code. Maks sure that you can manyally run the tar backup, then do this.

TAR="tar cvf /dev/rmt/0m *"

if `$TAR` ; then
echo "backup worked"
sles
echo "backup failed"
fi

This gets harder depending on what your doing, but return codes are the best indicators whether a command has failed.

Regards,
Shannon

Re: tar backup

Steven E. Protter — Tue, 14 Jan 2003 14:29:29 GMT

Just to pile on.

don't think using tar as a backup will let you recover a HP-UX system.

to do that, you need an ignite backup

make_tape_recovery

Then if you have the latests tar patch, you can make a massive tarball including files up to 8G in the tar.

Or you could use omniback or fbackup to make a second usaable tape.

I try not to post the same question twice. Though I've been guilty of occasionally not searching before posting, at least I have a 100% record of handing out points on my question.

Please Cheung, be a little nicer to your peers and reward them when they help you. The ettiquette link and Mr. Brown's post deserve 10 points for reminding you to be a responsible poster. Frankly anyone that bothers to post an answer should at least get one point.

I have used answers to my own questions to cut and paste solutions on numerious occaisions, and thats really the way to go.

Lets be friends and come up with new problems that strain our brains to come up with answers.

These forums are NO substitute for a support contract, though I frequently go here first just to have a chance to interact with my peers. I guess I kind of like them.

These forums can be a substitute for hp education, but really if you want to do the job right, you need SysAdmin I and II.

A man page goes a long way towards solving these kind of problems. HP has MUCH better man pages than Linux.

Lets all be friends now.

Regards,

Steve

Re: tar backup

Frank Slootweg — Tue, 14 Jan 2003 14:30:13 GMT

In general, outside the scope of Ignite-UX, tar(1) is not intended for and is inappropriate for system backup. At least use fbackup(1M), for example via SAM, or preferably a modern day backup product like HP's OmniBack.