Date: Thu, 21 Jul 2011 15:02:33 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Kevin Oberman <kob6558@gmail.com> Cc: "freebsd-stable@freebsd.org Stable" <freebsd-stable@freebsd.org>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: Status of support for 4KB disk sectors Message-ID: <20110721150233.765349kg5ed4p9bd@webmail.leidinger.net> In-Reply-To: <CAN6yY1ud9hJvufhabuNP9mK1qkS5sPLkzPvfEfOm5BQP_hQ1sw@mail.gmail.com> References: <CAN6yY1uaUqk2ifiNViJyMFJWf60a4DmCiVs3Z=--_TjtzseABQ@mail.gmail.com> <20110718234124.GA5626@icarus.home.lan> <20110719224126.00000a25@unknown> <CAN6yY1ud9hJvufhabuNP9mK1qkS5sPLkzPvfEfOm5BQP_hQ1sw@mail.gmail.com>
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Quoting Kevin Oberman <kob6558@gmail.com> (from Tue, 19 Jul 2011 =20 14:33:27 -0700): > On Tue, Jul 19, 2011 at 1:41 PM, Alexander Leidinger > <Alexander@leidinger.net> wrote: >> On Mon, 18 Jul 2011 16:41:24 -0700 Jeremy Chadwick >> <freebsd@jdc.parodius.com> wrote: >> >>> But the currently "known method" is to use gnop(8). =C2=A0Here's an >>> example: >>> >>> http://www.leidinger.net/blog/2011/05/03/another-root-on-zfs-howto-opti= mized-for-4k-sector-drives/ >>> >>> Now, that's for ZFS, but I'm under the impression the exact same is >>> needed for FFS/UFS. >> >> Info: gnop will not work for FFS/UFS because gnop is a temporary >> solution (needs to be done by hand at each reboot). For FFS/UFS you >> need to align the slice/partition and chose a good blocksize/fragsize >> combination (e.g. 32k/4k). > Thanks, Alexander. > > This is what I had expected after reading the man pages, though I > would think -b 65560 -f 8192' would be a bit more reasonable in this > day of bloated file formats. it's been years since I have hit a > problem with lack of inodes. I suggest to test this somewhere first. I have no evidence that it can =20 not work, but the blocksize/fragsize settings where subject to some =20 unexpected results in the past when they where changed to a bad =20 combination. IIRC this should be fixed now, but my memory may cheat on =20 me... Bye, Alexander. --=20 The speed of anything depends on the flow of everything. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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