On Wed, Nov 27, 2002 at 10:54:42AM +0100, Helas, Stephan wrote:
> Christoph Scheeder wrote:
> > Hi
> > this is very strange,
> > i have a few servers under linux using ext3 and gnutar with amanda
> > doing fine level1 and 2's.
> > I guess you may have a process on your server touching all your files
> > once a day, making tar thinking they where changed  and for that
> > taking them into your level one backups.
> > Any chance for that posibility?
> > Christoph
> > 
> > Helas, Stephan schrieb:
> >> Hello,
> >> 
> >> I backup several unix and Linux Server without having trouble. but
> >> one redhat 7.3 server don't work that way. i got some strange
> >> problem by backup this linux server with ext3. i use normal
> >> configuration, but my incremental backup are as big as the full
> >> backup. for example i post some info:   
> >> 
> >>           0  20021126  Tag05               4 3451500 3451500 1295
> >>           1  20021127  Tag06               9 3451510 3451510 1143
> >> ------------ snap ------------------------------------
> >> 
> >> as you can see, the filesize between level 0 and level 1 don't
> >> differ. 
> >> 
> >> now my question. is it a effect ob using ext3? can't ext3 handle the
> >> archive bit in the way that amanda use it? do i have to go back
> >> using ext2?  
> 
> One example for Files:
> 
> [root@gt1webdev2 software]# ls -l
> insgesamt 66104
> -rw-r--r--    1 root     root       706573 Okt  8 10:38 
> ant-1.5.1-3jpp.noarch.rpm
> -rwxr--r--    1 webuser  nobody     602566 Nov 15 08:04 
> ant-optional-full-1.5.1-3jpp.noarch.rpm
> -rwxr--r--    1 webuser  nobody   25146816 Nov 16 15:42 
> j2sdk-1_3_1_04-linux-i586-rpm.bin
> -rwxr--r--    1 root     root     25150518 Nov 16 15:04 
> j2sdk-1_3_1_06-linux-i586.rpm.bin
> -rw-r--r--    1 root     root      2807094 Okt 11  2001 
> jakarta-ant-1.4.1-bin.zip
> -rw-r--r--    1 root     root       468566 Okt 11  2001 
> jakarta-ant-1.4.1-optional.jar
> 
> [root@gt1webdev2 software]# find . -mtime -7

Does amanda use the data modification time or the inode change time
to determine if a file requires backing up?

I suspect the latter so that if the permmisions or owner/group of a
file changes (affecting inode change time but not data mod time)
then the file still needs to be backed up.

Check again with "ls -lc" and "find . -ctime"

I forget whether you are using tar or a dump, but the tar option
to retain file access time causes inode change time to be set to
current time.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
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