Question: Just how big is the host you're trying to backup? GB? number
of files? What is the network connection between the client and the backup
server? I'm curious about what it is about your environment that is making
it so hard to back up.
I believe I've mentioned my largest, hairiest server is 770GB with 6.8
Million files. Full backups on that system take 8.5 hours to run.
Incrementals take 20-30 minutes. I have no illusions that the
infrastructure I'm using to back things up is the fastest, but it's fast
enough for the job.
--
Ray Frush
Colorado State University.
On Wed, Sep 20, 2017 at 12:41 AM, Gandalf Corvotempesta <
gandalf.corvotempe...@gmail.com> wrote:
> 2017-09-19 18:01 GMT+02:00 Gandalf Corvotempesta
> <gandalf.corvotempe...@gmail.com>:
> > Removed "--inplace" from the command like and running the same backup
> > right now from BPC.
> > It's too early to be sure, but seems to go further. Let's see during the
> night.
>
> Is still running. This is ok on one side, as "--inplace" may caused
> the issue, but on the other side,
> there is something not working properly in BPC. An incremental backup
> is still running (about 80%)
> from yesterday at 17:39.
>
> rsync, rsnapshot, bacula, rdiff-backup, bareos, and borg took about 3
> hours (some a little bit more, some a little bit less) to backup this
> host in the same way (more or less, same final size of backup)
> BackupPC is taking 10 times more of any other backup software, this
> makes BPC unusable with huge hosts. An order of magnitude is totally
> unacceptable and can only mean some bugs in the code.
>
> As wrote many month ago, I think there are something not working
> properly in BPC, it's impossible that BPC deduplication is slowing
> down backups in this way.
> Also, I've removed the compression, because I'm using ZFS with native
> compression, thus BPC doesn't have to decompress, check local file,
> compress the new one and so on.
>
> And after the backup, refCnt and fsck is ran. For this server, the
> "post-backup" phase takes another hours or two.
>
> Maybe I have hardware issue on this backup server, but even all other
> backup software that i've tried are running in this server with no
> issue at all. Only BPC is slow as hell.
>
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--
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