Date: Wed, 10 Jul 2013 13:03:09 +0200 From: Borja Marcos <borjam@sarenet.es> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-fs@freebsd.org, =?iso-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>, zfs-devel@FreeBSD.org, ivoras@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: Make ZFS use the physical sector size when computing initial ashift Message-ID: <774B60E8-19C2-4A3A-880D-0D8726DC6727@sarenet.es> In-Reply-To: <628C5D1AF6044488B708484203D70B7A@multiplay.co.uk> References: <86zjtupz3r.fsf@nine.des.no> <628C5D1AF6044488B708484203D70B7A@multiplay.co.uk>
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On Jul 10, 2013, at 11:25 AM, Steven Hartland wrote: > If others are interested I've attached this as it achieves what we = needed here so > may also be of use for others too. >=20 > There's also a big discussion on illumos about this very subject ATM = so I'm > monitoring that too. >=20 > Hopefully there will be a nice conclusion come from that how people = want to > proceed and we'll be able to get a change in that works for everyone. Hmm. I wonder if the simplest approach would be the better. I mean, = adding a flag to zpool. At home I have a playground FreeBSD machine with a ZFS zmirror, and, you = guessed it, I was careless when I purchased the components, I asked for two "1 TB drives" = and that I got, but different models, one of them "advanced format" and the other one "classic". I don't think it's that bad to create a pool on a classic disk using 4 = KB blocks, and it's quite likely that replacement disks will be 4 KB in the near future.=20 Also, if you use SSDs the situation is similar. Borja.
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