topic Urgent !!! restore data failed!!! in Operating System - HP-UX

Urgent !!! restore data failed!!!

Ocean Lee — Sat, 27 Apr 2002 12:12:17 GMT

Hi,
I want to create a TAR file for 6GB data in dir ./work. I use the command "tar cvf work.tar ./work",
everything seems fine at first. because my filesystem only supports 2GB large per-file, so
when the work.tar reached 2GB, it ask me to add new device, then I touched a new null file named
work1.tar, it went on to write the data into file work1.tar. by this way, at last I get three files
named: work.tar, work1.tar and work2.tar.
when I use the command "tar xvf work.tar" to extract, 2GB data restored fine, but at the end
of the untar action, an error occur:

Tar: error! blocksize changed

then untar stoped.
So I can only extract the first 2GB files. I attempt some other way:
upgrade the filesystem to support larger then 2GB per-file, then cat the work.tar, work1.tar,
work2.tar to one file work_all.tar. then I extract from the work_all.tar file, no error occured
but I still only can extract first 2GB data.

Re: Urgent !!! restore data failed!!!

Vijeesh CTK — Sat, 27 Apr 2002 12:34:06 GMT

hi

tar will support only 2 GB size..if u want new tar which will support more athn 2 GB file size u can download it fm hpux porting site http://hpux.ee.ualberta.ca/
and install it on ur server

CTK

Re: Urgent !!! restore data failed!!!

harry d brown jr — Sat, 27 Apr 2002 13:10:21 GMT

Like CTK said, get the GNU TAR ported by HP:

http://hpux.cs.utah.edu/hppd/hpux/Gnu/tar-1.13.25/

also add the latest gzip:

http://hpux.cs.utah.edu/hppd/hpux/Gnu/gzip-1.3.3/

and look for other utilities like "lsof"

live free or die
harry

Re: Urgent !!! restore data failed!!!

Dragan Krnic_2 — Mon, 29 Apr 2002 07:49:53 GMT

Your problem maybe your shell. Piping either a large file or several 2 GB files to normal tar always worked for me when I used the plain old /usr/bin/ksh.

Re: Urgent !!! restore data failed!!!

Alexander M. Ermes — Mon, 29 Apr 2002 08:07:19 GMT

Hi there.
The piping idea seems the way to go.
We use to this during the export of Oracle databases by piping the export data into a .dmp-file through a pipe file created with mkfifo. If you ned more details, let us know.
Rgds
Alexander M. Ermes