Date: Fri, 18 May 2007 13:19:21 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Darren Reed <darrenr@freebsd.org> Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org>, Joao Barros <joao.barros@gmail.com> Subject: Re: ZFS: amd64, devd, root file system. Message-ID: <86tzuav0p2.fsf@dwp.des.no> In-Reply-To: <20070518103230.GA50946@hub.freebsd.org> (Darren Reed's message of "Fri\, 18 May 2007 10\:32\:30 %2B0000") References: <20070409011723.GB74547@garage.freebsd.pl> <20070409094319.GB76673@garage.freebsd.pl> <70e8236f0704090808y5d305175wdc3cee5be1a26a9@mail.gmail.com> <20070409153338.GH76673@garage.freebsd.pl> <440b3e930705131031v5e97db7fq486d8d17aeb9f622@mail.gmail.com> <20070514070715.GA82322@hub.freebsd.org> <86646vyimg.fsf@dwp.des.no> <20070517124648.GA98052@hub.freebsd.org> <86lkfntndt.fsf@dwp.des.no> <20070518103230.GA50946@hub.freebsd.org>
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Darren Reed <darrenr@freebsd.org> writes: > Dag-Erling Sm=C3=B8rgrav <des@des.no> writes: > > My point is that it is a lot more difficult for us to implement ZFS > > support in an OS that is intended to run on everything and the kitchen > > sink, from the crappiest 486 to the latest quad-core Xeon, with all > > kinds of crappy disk controllers, than it is for Sun to do the same in > > Solaris, which mostly runs on hardware designed and manufactured by Sun > > for the specific purpose of running Solaris. > > Which is why I'm using FreeBSD+ZFS rather than Solaris+ZFS :-) > > Maybe more layers are required in FreeBSD disk I/O subsystem to > shield things like ZFS from crappy controllers? You completely misunderstand - the issue is not shielding ZFS from the crappy controllers - that is already taken care of - but having to reimplement the entire stack in the BTX loader, and in boot2 (which needs to be able to locate and load the BTX loader). DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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