Date: Thu, 26 May 2005 22:11:04 -0600 From: Scott Long <scottl@samsco.org> To: Andre Guibert de Bruet <andy@siliconlandmark.com> Cc: FreeBSD Current <freebsd-current@freebsd.org>, "Chad Leigh -- Shire.Net LLC" <chad@shire.net> Subject: Re: Disable read/write caching to disk? Message-ID: <42969DD8.4060701@samsco.org> In-Reply-To: <20050527000105.E54386@lexi.siliconlandmark.com> References: <4295D51F.50106@centtech.com> <429606D9.6080602@cs.tu-berlin.de> <42960ACB.7090801@cs.tu-berlin.de> <42960CFE.4060307@centtech.com> <42960F8F.2050109@samsco.org> <42961195.30608@centtech.com> <429613FB.80100@samsco.org> <42968AD4.3020603@centtech.com> <A70C5E4F-D9F9-4756-8AC2-591462E338DE@shire.net> <4296997C.9030700@samsco.org> <BFF29E63-5565-41DF-A163-3ACC3CD3E75D@shire.net> <20050527000105.E54386@lexi.siliconlandmark.com>
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Andre Guibert de Bruet wrote: > > On Thu, 26 May 2005, Chad Leigh -- Shire.Net LLC wrote: > >> Agreed, but as you say, FreeBSD is not there yet, and since the OP is >> on FreeBSD, and wants to have multiple computers attached, NFS would >> be one way of making that happen. And if you leave the other >> computers attached by the FC but not mounted, if on goes down, you can >> replace it with another, and switch your nfs server over. Not as >> ideal but doable on FreeBSD. > > > This hack would not be suitable in an HA environment -- It requires > human intervention or some really fugly scripts not just for the NFS > server, but also for the clients. These scripts would have to figure out > how to recover NFS file locking state and consistency when the backup > machine fails over. > > It seems as if NFS in this type of setup introduces more problems than > it solves. > > Andy > So what we need is some manpower. I estimate that a proof-of-concept port of GFS would take about 4-6 solid months. There is also a volume management aspect to GFS, but that is less important and the existing GEOM classes can largely fill the role already. Anyone interested in taking a serious look at it? Scott
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