topic Re: Tar: error! blocksize changed in Operating System - HP-UX

Tar: error! blocksize changed

Renda Skandier — Mon, 08 Mar 2004 15:47:11 GMT

Hi,
Iâ m trying compress an entire directory into a single file using tar. For the sake of debugging, I am trying it using just 2 files.
The resulting files appear to be correct and work fine but I always get an error â Tar: error! blocksize changedâ . See below.
I have tried waiting an extended amount of time to be sure it it not a timing issue and my file size is well below 2G.

ANY IDEAS??

tar -cvf softran.TAR .
produces:
a ./eft110.cbl 61 blocks
a ./install.sh 1 blocks
a ./softran.TAR 60 blocks
./softran.TAR: file changed size

the result is:
-rw-rw-r-- 1 sysmnt sysmnt 133120 Mar 8 09:03 softran.TAR

when I extract using
tar -xvf softran.TAR

x ./eft110.cbl, 31033 bytes, 61 tape blocks
x ./install.sh, 36 bytes, 1 tape blocks
x ./softran.TAR, 30720 bytes, 60 tape blocks
Tar: error! blocksize changed

Re: Tar: error! blocksize changed

A. Clay Stephenson — Mon, 08 Mar 2004 15:51:40 GMT

You are trying to create a tarfile in the same directory that you are taring; ie, the tar is trying ti tar itself.

Do this:
tar cvf /var/tmp/softran.TAR .

assuming that your CWD is not /var/tmp.

Re: Tar: error! blocksize changed

Thierry Poels_1 — Mon, 08 Mar 2004 15:54:57 GMT

hi,

you also are TARing the destination file into the tarfile, so the file it's trying to tar is being changed at the same time.

try:
tar cvf ../softran.TAR *
or
tar cvf softran.TAR !(softran.TAR)

good luck,
Thierry.

Re: Tar: error! blocksize changed

Patrick Wallek — Mon, 08 Mar 2004 15:58:01 GMT

Clay is absolutely correct.

If you absolutely MUST create the tar file in the same directory as the rest of your files, I would do something like this:

# ls -1 > /var/tmp/file

# tar -cvf softran.TAR $(cat /var/tmp/file)

This will create your tar file in the same directory but will not try to include itself in the tar file.

Re: Tar: error! blocksize changed

Thierry Poels_1 — Mon, 08 Mar 2004 16:03:07 GMT

hmmmz, it seems it was mixing things up
the second one should have been:

tar cvf softran.TAR $(!softran.TAR)
(tar all files except softran.TAR)

sorry & good luck,
Thierry

Re: Tar: error! blocksize changed

Thierry Poels_1 — Tue, 09 Mar 2004 04:12:01 GMT

aaaaaarggghh
I was mixing up my mixed up stuff :-(

tar cvf softran.TAR !(softran.TAR)
was indeed the correct one, sorry sorry sorry

Thierry (need more sleep ;)

Re: Tar: error! blocksize changed

Sanjiv Sharma_1 — Tue, 09 Mar 2004 04:17:06 GMT

Hi,

Please check this link
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=190047

Re: Tar: error! blocksize changed

Renda Skandier — Tue, 09 Mar 2004 09:05:01 GMT

Thanks everyone! I knew it was something I was just missing.

It took me awhile because I missed the "."
at the end of
tar cvf /home/live/updates/$1/softran.TAR .

for future readers I also needed to change the extract line to extract from a diff dir
tar -xvf /home/store/files/softran.TAR

THANKS AGAIN!