RFT: ZFS MFC

[Randy Bush]

> Should a ZFS v6 pool be upgraded through 'zpool upgrade' while in use?

i did it in single luser, no problem

> My old loader.conf (7.2-STABLE-amd64) settings for zfs:
> 
> vm.kmem_size="3072M"
> vm.kmem_size_max="3072M"
> vfs.zfs.arc_min="120795878"
> vfs.zfs.arc_max="2899101078"
> # more stability?
> vfs.zfs.prefetch_disable=1

i believed UPDATING and tried, only keeping the last.  has not crashed.

> Thanks for MFC'ing v13 for RELENG_7 !!

indeed!

randy