I've been diving into Bacula the past 2-3 weeks to come up with a backup
system here for some small server count but very large data store sizes
(30+TiB per server).
In the coarse of my testing I have noticed something and want to know if
it's by design (in which case it would be very wasteful of tapes); a
misconfiguration on my part (possible as I said I've only been playing
with it for the past 2-3 weeks), or a bug.
Ok, what I'm seeing is that I do a full backup of the client machine,
that runs well; I then delete an entire subdirectory say
/var/ftp/{DIRA} which has say 10,000 files or about 1TiB or data. I
then do a restore of that directory from tape (last backup was a
full). Now I am seeing that the next incremental I do has the full
/var/ftp/{DIRA} being backed up again as if it were all new files,
likewise a differential will also back up this directory in full again
as well. In my mind at least since this directory was in the full
backup and I have accurate mode on, the backup system should KNOW that
the files are already on tape (the full backup that was used to do the
restore) and should only back up /NEW/ files added to that directory
since that last backup not the entire directory structure after a restore.
Can anyone comment?
Thanks.
Steve
----------- (data for reference)----------
bacula 3.0.3 compiled under ubuntu 8.04.3 LTS server (64bit).
Compile-time flags for reference:
./configure --prefix=/opt/bacula --enable-smartalloc --with-sqlite3
--with-openssl --enable-batch-insert
Backup size for a single test system is ~29TiB/4,600,000 files (sql
database size is ~1GiB)
---<bacula-dir snip>---
Job {
Name = "loki-FullBackup"
Type = Backup
Level = Full
Client = loki-fd
FileSet = "loki-FileSet"
Schedule = "loki-Schedule"
Accurate = yes
Storage = LTO4
Messages = Standard
Pool = BackupSetAA
Priority = 10
}
FileSet {
Name = "loki-FileSet"
Ignore FileSet Changes = yes
Include {
Options {
signature=MD5
Accurate=mcs5
Verify=pin5
onefs=yes
recurse=yes
sparse=yes
noatime=yes
hardlinks=yes
checkfilechanges=yes
}
File = /
File = /boot
File = /home
File = /var/ftp
}
Exclude {
File = /cdrom
File = /dev
File = /lost+found
File = /media
File = /opt/bacula/var/bacula/spool
File = /opt/bacula/var/bacula/working
File = /proc
File = /sys
File = /tmp
File = /var/ftp/tmp
File = /var/lock
File = /var/run
File = /var/tmp
File = /.fsck
File = /.journal
}
}
--------<bacula-dir snip>------
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