:: INTRO ::

I've been really curious about a few things on backing up the backup because 
I've been doing it for a while from an ext3 filesystem for a zfs one and have 
noticed quite a few issues especially when my zfs drive suddenly filled up and 
"rm -rv pc/blah" would give me immediate feedback the directory was deleted 
meaning there was nothing in it, yet somehow I had tons and tons of data in use.

Then I noticed all the rsync cron jobs were happening all at once and nothing 
was finishing. So I took a further look at the cpool and noticed it was pretty 
full of data but nowhere else was and that this was probably what was causing 
the issue. It also made clear to me why my BackupPC machine would suddenly 
start to take hours for backups that usually took 10 minutes.

:: INFORMATION ::
The BackupPC machine is running Ubuntu Hardy with BackupPC version 3.1.0. The 
other machine is running FreeNAS embedded. Both machines have the same 2TB 
drive in them with the filesystems being ext3 and zfs respectively.

The rsync command I cron to copy the /var/lib/backuppc directory looks like 
this:
rsync user@IP::backuppc /mnt/backuppc -aH 
--exclude-from="/mnt/backuppc/exclude-list.txt" --delete --inplace 
--checksum-seed=32761

I modified the command in my post to show more of what's actually going on than 
what my user-specific settings are. My exclude file now includes pool and cpool 
as I don't yet know of their importance.

:: QUESTIONS ::
My main question pertains to the pool and the cpool. What is the purpose of 
these directories? Are they recreated when the nightly jobs runs?

For instance, I'm under the impression the way to delete a host, you remove the 
pc/host folder and then you go into the main configuration and remove the host 
from there as well. What happens to the pool in this instance?

Let's say the drive for my BackupPC server dies, and I cannot recover the data 
because someone smashed the drive with a hammer, if I wanted to re-add hosts, 
and I only had backed up the pc folder, wouldn't that be sufficient or would 
all the de-duplicated file processing be lost?

+----------------------------------------------------------------------
|This was sent by Saturn2888 AT gmail DOT com via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------



------------------------------------------------------------------------------
This SF.net email is sponsored by Sprint
What will you do first with EVO, the first 4G phone?
Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/