Bacula-users

Re: [Bacula-users] speed up my backups

2011-04-19 10:06:45
Subject: Re: [Bacula-users] speed up my backups
From: Christian Manal <moenoel AT informatik.uni-bremen DOT de>
To: bacula-users AT lists.sourceforge DOT net
Date: Tue, 19 Apr 2011 16:04:25 +0200
Am 19.04.2011 15:37, schrieb hymie!:
> 
> So one of my machines has a few zillion tiny little files.
> 
> My full backup took 44 hours.  I can deal with that if I have to.
> My incremental backup has been running for 10 hours now.
>     Files=71,560 Bytes=273,397,510 Bytes/sec=7,666 Errors=0
>     Files Examined=14,675,372
> 
> I know that bacula has to look at each file to determine if it's
> changed.  And I am investigating whether or not we actually need to
> keep all of these little files, or if we can zip them up into archives.
> 
> In the meantime,  I'm just wondering if there is some why to speed up my
> backups.  For example,
> signature=sizeonly
> or
> signature=stupid
> or some other undocumented and unrecommended (but needed) way to
> speed up the verification of file changes (or lack thereof).
> 
> Thanks.
> 
> --hymie!    http://lactose.homelinux.net/~hymie    hymie AT lactose.homelinux 
> DOT net

Hi,

do you use accurate backups? If not, the signature isn't used anyway.
Regular incrementals and differentials are done by timestamp. If you do,
you can specify the metadata that is used by accurate jobs to compare
files in the fileset:

http://bacula.org/5.0.x-manuals/en/main/main/Configuring_Director.html#8553


Regards,
Christian Manal

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