BackupPC-users

Re: [BackupPC-users] BackupPC on XFS getting lots of error -4 when calling...

2011-05-24 11:10:18
Subject: Re: [BackupPC-users] BackupPC on XFS getting lots of error -4 when calling...
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: backuppc-users AT lists.sourceforge DOT net
Date: Tue, 24 May 2011 10:09:09 -0500
On 5/24/2011 9:36 AM, Timothy J Massey wrote:
>
> I ended up upgrading that system to 2GB of RAM merely so that I could
> finish the fsck.
>
> (Oh, and to a long-ago debate about would more RAM help BackupPC to do
> its job: nope. The backups with 2GB took almost exactly the same amount
> of time as the ones with 512MB. I wasn't swapping with 512MB, and there
> just isn't that much data that can be profitably cached while doing a
> backup, as long as the file list can fit in RAM: the few dentries and
> inodes in use at a time just don't take that much space...)

That just seems wrong - although I'd consider 2Gb to be a fairly small 
amount of RAM and maybe not enough to help.  It should be useful to 
cache the whole pool directory tree so you don't have to seek there to 
check for every hash match.

-- 
   Les Mikeselll
    lesmikesell AT gmail DOT com

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