This is the mail archive of the
cygwin
mailing list for the Cygwin project.
tar incremental backup issue
- From: Alex Song <qiufeng_song at yahoo dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 22 Jul 2004 10:30:29 -0400 (EDT)
- Subject: tar incremental backup issue
Hi,
I'm relying on incremental feature of tar for my backup need. After
doing a lot of backups, I suddenly found an issue with this feature.
It seems if you move a file with an earlier date to the directory, the
incremental backuped archive of this directory does NOT have this file!
I'm using following script to test this,
#! /bin/sh
rm -fr test restore 1 2 snapshot
date > date.txt
sleep 90 #make an older file
mkdir test
mkdir test/1
mkdir test/2
echo 1 > test/1/1
echo 2 > test/2/2
#first backup
tar -cf test.tar --listed-incremental=snapshot test
mkdir 1
mv test.tar 1
#second backup
mv date.txt test/1
tar -cf test.tar --listed-incremental=snapshot test
mkdir 2
mv test.tar 2
#restore
mkdir restore
cd restore
tar -xf ../1/test.tar --listed-incremental=../snapshot
tar -xf ../2/test.tar --listed-incremental=../snapshot
diff -r test ../test
#end
The output is
Only in ../test/1: date.txt
Or did I do something wrong?
I really appreciate your reply.
Alex
______________________________________________________________________
Post your free ad now! http://personals.yahoo.ca
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/