Some latest hard drives have logical sectors of 512 byte when they
actually have 4k physical sectors. Here is the document describing what
to do in such case:
http://ivoras.net/blog/tree/2011-01-01.freebsd-on-4k-sector-drives.html .
For UFS: newfs -U -f 4096 /dev/da0
For ZFS: gnop create -S 4096 /dev/da0 && zpool create data /dev/da0.nop
I am sure most people just install such hard drive without doing this
and potentially get suboptimal performance since they aren't aware about
this.
Shouldn't UFS and ZFS drivers be able to either read the right sector
size from the underlying device or at least issue a warning?
Yuri
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