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

tar ball

subhashni — Thu, 02 Jan 2003 20:05:06 GMT

could make tar ball for a file large as 5 gig.please help.
Thanks

Re: tar ball

Anthony deRito — Thu, 02 Jan 2003 20:08:56 GMT

from the /usr/share/doc/lg_files.txt doco...

4.2.1 tar, cpio, pax, ftio

Some of the backup commands, specifically tar, cpio, pax (tar & cpio
formats), and ftio (because it creates cpio format archives) are
restricted from supporting large files due to standards defined
headers in the archives. Although the headers allow archival of files
upto 8GB, there is no guaran- tee that there will be no attempt to
restore these files on a system that does not support large
files. These commands will therefore support files up to 2GB
only. Attempts to archive any files >2GB will fail, and the files will
not be added to the archive.

Re: tar ball

John Poff — Thu, 02 Jan 2003 20:09:29 GMT

Hi,

The tar and cpio utilities that come with HP-UX have a max file size limit of 2 Gb. You can use fbackup or you can download the GNU tar utility and use it.

Take a look at this thread:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xfad8a1abbac8d5118ff10090279cd0f9,00.html

JP

Re: tar ball

James R. Ferguson — Thu, 02 Jan 2003 20:13:54 GMT

Hi:

Either use GNU's 'tar' from one of the HP-UX Porting centers, or if you are running 11.11, apply tar patch PHCO_26423. I'd also add the cousin, 'pax' patch 26422.

Regards!

...JRF...

Re: tar ball

Patrick Wallek — Thu, 02 Jan 2003 20:35:51 GMT

I think there is a bit of misunderstanding here.

While tar does NOT support backing up a file that is 2GB or larger, I THINK that tar CAN create a tar ball (tar -xvf filename.tar), where filename.tar is the tar ball, that is larger than 2GB.

If this tar were not able to do this then it would not be able to write more than 2GB of data to a DDS, DLT or any other tape.

The only catch is that your filesystem MUST have largefiles enabled so that you don't hit the filesystem 2GB limit for a non-largefiles filesystem.

Re: tar ball

Vitek Pepas — Thu, 02 Jan 2003 22:00:30 GMT

There is one more catch: make sure you don't exceed ulimit for the file size.