Date: Thu, 31 Mar 2016 01:13:55 -0500 From: Dustin Marquess <dmarquess@gmail.com> To: freebsd-current@freebsd.org Subject: Mixed ashift? Message-ID: <CAJpsHY6HV1xKcS8D=5pym4w-p4OyXhvma9efBaofyuYRWRLahg@mail.gmail.com>
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I have what I think is a pretty normal setup.. a bunch of HDDs plus 2 SSDs
(one ZIL, one SLOG).
The HDDs are standard 512 byte sector drives. The SSDs have 8k page sizes.
In Illumos I added the SSDs to sd.conf and created the zpool and it shows
the HDDs as ashift 9 and the SSDs as ashift 13, like normal:
# zdb -C | grep ashift
ashift: 9
ashift: 9
ashift: 9
ashift: 9
ashift: 13
The question is, how to replicate this in FreeBSD? The old "gnop" method
doesn't work anymore, and setting "vfs.zfs.min_auto_ashift=13" causes it to
use 13 for the HDDs, which seems like a waste. Is this not supported?
Thanks!
-Dustin
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