On 01 Apr 2015, at 06:30, Daniel Eischen <deisc...@freebsd.org> wrote: > > I have an Oracle (nee Sun) X4-2 server with identical 300GB SAS > drives. I did an MBR ZFS install from FreeBSD 10.1-RELEASE CD > and have it updated to p6: ... > # zpool create -o cachefile=/tmp/newpool.cache bootpoolNew label/boot0 > # zdb -U /tmp/newpool.cache | grep ashift > ashift: 9 > > What gives? How do I get it to use 4k?
sysctl vfs.zfs.min_auto_ashift=12 And also put that in your /etc/sysctl.conf. I don't know why it isn't the default yet... :) -Dimitry
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