Date: Tue, 20 May 2014 14:33:55 +0100 From: krad <kraduk@gmail.com> To: Michael Jung <mikej@mikej.com> Cc: FreeBSD FS <freebsd-fs@freebsd.org>, owner-freebsd-fs@freebsd.org Subject: Re: ZFS snapshot restore not quite working; missing steps? Message-ID: <CALfReyfBhOpiO87rfbEKL=TmFEjJww6Zqy5gBCiHozTYw13r1Q@mail.gmail.com> In-Reply-To: <2dce8d576665e2f89fef4567e54589e4@mail.mikej.com> 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> <2dce8d576665e2f89fef4567e54589e4@mail.mikej.com>
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put it in sysctl.conf its only really needed at pool creation time anyhow, once the pool is built the ashift is set On 20 May 2014 13:49, Michael Jung <mikej@mikej.com> wrote: > On , Steven Hartland wrote: > >> ----- Original Message ----- 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: >>> >>> https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE >>> >>> 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=12 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. >> >> Regards >> Steve >> _______________________________________________ >> freebsd-fs@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-fs >> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >> > > > > Steve, > > FreeBSD firewall 10.0-STABLE FreeBSD 10.0-STABLE #0 r266313: Sat May 17 > 11:52:18 EDT 2014 root@firewall:/usr/obj/usr/src/sys/VT amd64 > > > Even though /boot/loader.conf contains vfs.zfs.min_auto_ashift=12 the > value does not get set. > > [mikej@firewall ~]$ cat /boot/loader.conf > zfs_load="YES" > kern.maxswzone=16777216 > vfs.zfs.min_auto_ashift=12 > [mikej@firewall ~]$ > > > [mikej@firewall ~]$ sysctl -a | grep ashift > vfs.zfs.max_auto_ashift: 13 > vfs.zfs.min_auto_ashift: 9 > [mikej@firewall ~]$ > > > Regards, > --mikej > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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