BackupPC-users

Re: [BackupPC-users] Problems with hardlink-based backups...

2009-09-01 23:10:57
Subject: Re: [BackupPC-users] Problems with hardlink-based backups...
From: Jim Leonard <trixter AT oldskool DOT org>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Tue, 01 Sep 2009 22:07:36 -0500
Jeffrey J. Kosowsky wrote:
>  > Now it is you who is using the straw-man argument, because backuppc 
>  > *can* easily be backed up at the file level.  You just don't like how 
>  > long it takes and/or that it doesn't work quickly with your favorite 
>  > utility. 
> 
> Really - then why do people post on a more than weekly basis about not
> being able to copy such a large number of hard links without rsync
> crashing.

Because rsync is the wrong tool!

>  > I have already mentioned that your filesystem's "dump" utility 
>  > works perfectly well for copying your filesystem, hardlinks and all, 
>  > ACLs and all, to another filesystem/file/tape/whatever.  I think you 
>  > should actually sit down and use it before making claims that backuppc's 
>  > pool isn't copyable using normal methods.
> 
> But how does that scale with number of hardlinks? Will it crash and
> run out of memory? Will it thrash around in swap? Will it reliably
> copy and recreate everything? If it doesn't scale well then it is not
> a practical solution.

It scales wonderfully.  Please use dump/vxdump/ufsdump/etc. before 
bashing it.

>  > Now we can get off of the silly hardlinks suck/can't-be-backed-up 
>  > argument and return to whether or not attrib should be turned into a 
>  > database.
>  > -- 
> 
> Works for me because I have always been more interested in the attrib
> part (though I still think hard links in practice is an issue ;)

Noted.  Now please stick to the database issue (and for that, you're on 
your own, as I completely disagree with you).
-- 
Jim Leonard (trixter AT oldskool DOT org)            http://www.oldskool.org/
Help our electronic games project:           http://www.mobygames.com/
Or check out some trippy MindCandy at     http://www.mindcandydvd.com/
A child borne of the home computer wars: http://trixter.wordpress.com/

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