Date: Sun, 25 Feb 2001 04:29:33 +0100 From: Bernd Walter <ticso@cicely5.cicely.de> To: David Gilbert <dgilbert@velocet.ca> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Large MFS on NFS-swap? Message-ID: <20010225042933.A508@cicely5.cicely.de> In-Reply-To: <15000.8884.6165.759008@trooper.velocet.net>; from dgilbert@velocet.ca on Sat, Feb 24, 2001 at 04:08:04PM -0500 References: <15000.8884.6165.759008@trooper.velocet.net>
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On Sat, Feb 24, 2001 at 04:08:04PM -0500, David Gilbert wrote: > We have an application which is precompiled, for linux, and stupid. > It uses (at times large) scratch files. We want to run this on our > diskless machines (CPU farm) to cut the per-cpu cost of the > computation ($200/drive starts getting significant at a few hundred > machines). > > Anyways, I've tried: > > [1:26:2025]root@spitfire:/usr/u/dgilbert> mount_mfs -T test -s 2097152 -o nosuid,nodev /dev/null /mnt > [1:27:2026]root@spitfire:/usr/u/dgilbert> df -k > Filesystem 1K-blocks Used Avail Capacity Mounted on > 192.168.255.49:/raid/clients/4 124545452 87451588 27130228 76% / > procfs 4 4 0 100% /proc > mfs:57939 507755 1 467134 0% /mnt > [1:28:2027]root@spitfire:/usr/u/dgilbert> tail -5 /etc/disktab > test|test disk|\ > :ty=removable:dt=SCSI:se#512:nt#1:ns#31:nc#18600:ts#1:rm#4800:\ > :pc#20971520:oc#0:\ > :pa#20971520:oa#0:ta=4.2BSD:ba#4096:fa#512: > > The goal is to have about 2 gig of filesystem available for these > (admittedly stupid) scratch files. You have to raise MAXDSIZE and DFLDSIZ in your kernel config. You may also want to try MD instead of MFS. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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