terrywong,
I strongly suggest to use gtar. Check http://www.gnu.org on how to get it for AIX.
Stefan
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Question
tar command
Hi All,
Our system is AIX 5.1.
1. I wrote a srcipt to tar FOUR directories:
tar -cvf /dev/rmt0.1 / >> /logs/coldbackup
tar -cvf /dev/rmt0.1 /usr >> /logs/coldbackup
tar -cvf /dev/rmt0.1 /var>> /logs/coldbackup
tar -cvf /dev/rmt0.1 /opt >> /logs/coldbackup
However at the end I found it tar ALL the directories in my system, such as /tmp, /abc, /def, ....etc. So what's the problem? I shouldn't put tar / (root) in the script? if there is alternative method to backup / ?
2. I saw there is some limitation on using tar to backup the file size which is bigger than 2 G, so how to solve?
Thanks
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Answers
tar -cvf /dev/rmt0.1 / >> /logs/coldbackup
this will backup anything in and below root i.e you're whole filesystem.
Proposed Solution :
In Solaris 8 there is the X switch (tar -cvfX ) it allows you to
use an Exclude file in side of which you can place
excluded files and directories
SYNOPSIS
tar c [ bBeEfFhiklnopPqvwX [ 0-7 ] ] [ block ] [ tar-
file ] [ exclude-file ] { -I include-file | -C directory
| file | file }
Don't know if that exists in AIX
example : Text inside a file named Exclude or any name you give it.
/tmp will exclude eveything in tmp and below for example
/etc next line , something else to exclude
/bogus/sample_file Exclude a particular file within the bogus directory
Hope this helps
RayZilla
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by: stefan73Posted on 2004-04-19 at 02:55:33ID: 10857996
Hi terrywong,
> I shouldn't put tar / (root) in the script? if there is alternative
> method to backup / ?
Depends. Some tars, such as Gnu tar, allow you to specify not to cross a file system's boundary.
In terms of performance, it's probably better to back up all file systems in parallel, but you'd need several tape drives for that.
> I saw there is some limitation on using tar to backup the file size which is bigger than 2 G, so how to solve?
Again, depends :-)
There are tar versions which support 64bit file sizes. You can simply check yours by creating a dummy file, like
dd if=/dev/zero bs=1024k count=2500 > some_place_which_supports_
...and tar it.
(maybe dd also doesn't like 2G files - check your documentation)
Cheers,
Stefan