Date: Mon, 19 May 2014 22:14:38 -0700 From: Jeff Chan <jeffc@supranet.net> To: "Steven Hartland" <killing@multiplay.co.uk> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS snapshot restore not quite working; missing steps? Message-ID: <1787422322.20140519221438@supranet.net> In-Reply-To: <C791C5E9A90A4D7BB68E39222DC5ABE7@multiplay.co.uk> References: <1129127016.20140517185154@supranet.net> <1198503903.20140518030907@supranet.net> <F8DBD16F6101498A98AA04D29C1FD596@multiplay.co.uk> <236659679.20140518035326@supranet.net> <3E3DCC6DED864A519B02A398B92D1994@multiplay.co.uk> <1879018434.20140519191844@supranet.net> <C791C5E9A90A4D7BB68E39222DC5ABE7@multiplay.co.uk>
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On Monday, May 19, 2014, 7:26:35 PM, Steven Hartland wrote: > ----- Original Message -----=20 > From: "Jeff Chan" <jeffc@supranet.net> >> Update: using the most current FreeBSD 9.0 - 9.2 ZFS instructions >> on the wiki page for the initial configuration caused the booting >> to ZFS to work: >>=20 >> https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE >>=20 >> including the GNOP trick, since these drives are "advanced format" and >> greater than 2TB size, and the -a 4k alignment to 4k sectors when >> creating the ZFS partitions. > On later versions you can set vfs.zfs.min_auto_ashift=3D12 to achieve the > same thing as the GNOP trick, but thats only needed if your drive doesn't > have a 4k quirk in our codebase. Thanks Steve, Do you have a reference for vfs.zfs.min_auto_ashift=3D12? Cheers, Jeff C. -- Jeff Chan mailto:jeffc@supranet.net http://www.jeffchan.com/
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