balance functionality
Forwarded message from Matthew O'Keefe ([email protected]) ...
-------- Original Message --------
From: "Matthew O'Keefe" <[email protected]>
Date: Tue, 9 May 2000 07:37:09 -0500
Subject: Re: [linux-lvm] balance functionality
Message-ID: <20000509073709.A96956@styx.>
References: <[email protected]>
In-Reply-To: <[email protected]>
Quoted 8 lines · Jean-Francois Landry
Greetings,
I was wondering if the current LVM implementation supports functionality similar to the Digi^H^H^H^HCompaq Tru64 Unix "balance" utility. This utility rearranges data across volumes ( I think this maps to PV's in the Linux LVM) so that files are scattered evenly in a concatenated volume. Anyone willing to comment on that? Sorry if this has been covered but I was unable to find anything in the mailing lists archives.
Hi,
I don't think so. Since the volume manager only knows about blocks, not files, it cannot make decisions about how blocks for a particular file should be distributed. RAID-0 striping can help in general with this
problem. Our Linux cluster file system (GFS -- see www.globalfilesystem.org)
has a balancer, but it is out-of-date, as the balancer has not kept up with our latest code updates. We plan to include this functionality in the
future.
Matt O'Keefe
Quoted 7 lines
Cheers,
Jean-Francois LandrySignature · 3 lines
I'm famous. Ain't taht a bitch! Thelonious Sphere Monk --