Date: Thu, 1 Jun 2006 20:08:20 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: "Rick C. Petty" <rick@kiwi-computer.com> Cc: freebsd-fs@freebsd.org, pfgshield-freebsd@yahoo.com, Hugo Meiland <hugo@meiland.nl> Subject: Re: Is anyone working on a port of ZFS to FreeBSD Message-ID: <20060601200407.U37536@fledge.watson.org> In-Reply-To: <20060601171307.GA59676@megan.kiwi-computer.com> References: <447E524E.7050400@centtech.com> <20060601034133.18927.qmail@web32701.mail.mud.yahoo.com> <20060601171307.GA59676@megan.kiwi-computer.com>
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On Thu, 1 Jun 2006, Rick C. Petty wrote: > [Moving this discussion to freebsd-fs, since it's more appropriate there] > > My attempts at getting both HFS and AFS (ports/arla) working in 6.0 & 6.1 > have been futile. Due to the lack of good documentation of the VFS > subsystem (especially in the areas of the 6.x removals) and my continued > frustrations trying to port both file systems, I've given up. Maybe if I > magically find time this summer... > > Anyone else working on these? They should be easier/quicker to fix than > trying to port ZFS, but the more FS support, the better! I had a conversation with Hugo Meiland at BSDCan about getting Arla support fixed up for FreeBSD, and in particular, and possibly importing the Arla nnpfs kernel module so that it gets updated for VFS changes along with the other kernel file systems. I've recently gotten him set up with a FreeBSD.org Perforce account to help facilitate that. One of the reasons why VFS documentation is lagging currently is that the retrofit of the VFS architecture for SMP isn't done. There are still significant improvements being made in 7.x, much of which will make it to 6.x, and as we begin to see more MPSAFE file systems and SMP-oriented file system development, I think there will be more. You may have noticed the recent commit to make the FreeBSD NFS client code MPSAFE in 7.x. My hope is that after things settle down some more in the next 6-8 months, we can see a more serious effort to document the VFS APIs in their post-SMP state. Doing too much before then would probably be premature. I've added Hugo to the CC line, perhaps he can comment on the current status of the Arla update work. Robert N M Watson
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