On 22/11/2012 14:49, Warren Block wrote:
On Wed, 21 Nov 2012, Warren Block wrote:
Got a chance to set up a scratch drive and check this. Turns out
I left out the step of creating a "slice" (MBR partition) to hold
the FreeBSD partitions. Also, GPT labels cannot be used in an
MBR. Fixed below. I will probably add this to my disk setup
article because it has come up more than once.
The fdisk/bsdlabel section of my disk setup article has been
rewritten to use gpart. Feedback welcome.
http://www.wonkity.com/~wblock/docs/html/disksetup.html
Something I meant to ask before - is there any benefit to following the
steps described in
http://www.aisecure.net/2012/01/16/rootzfs/
Abbreviated the steps are -
gpart add -t freebsd-zfs -l disk0 ada0
gnop create -S 4096 /dev/gpt/disk0
zpool create zroot /dev/gpt/disk0.nop
zpool export zroot
gnop destroy /dev/gpt/disk0.nop
zpool import zroot
The step of using gnop is meant to trick zfs into believing the disk has
4K sector size to improve performance, which I would think zfs would be
able to figure out by talking to the disk.
Does partitioning hide the sector size or would the step of aligning
the partition start to a 4k sector unhide the 4k size?
Or are these steps just a waste of time?
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