Date: Thu, 31 Mar 2016 14:54:21 -0500 From: Dustin Marquess <dmarquess@gmail.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-current@freebsd.org Subject: Re: Mixed ashift? Message-ID: <CAJpsHY4U8Hj%2BAMZ5AUXgy3wwr0cUVb0dgzzBU8Kr%2B0TPVFgdLA@mail.gmail.com> In-Reply-To: <56FCE896.3000708@multiplay.co.uk> References: <CAJpsHY6HV1xKcS8D=5pym4w-p4OyXhvma9efBaofyuYRWRLahg@mail.gmail.com> <56FCC067.3060101@freebsd.org> <56FCE896.3000708@multiplay.co.uk>
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AH-HA! That makes perfect sense and is entirely obvious.. why didn't I think of that?! Thanks again! -Dustin On Thu, Mar 31, 2016 at 4:06 AM, Steven Hartland <killing@multiplay.co.uk> wrote: > vfs.zfs.min_auto_ashift is only used when a device is added so you can set > it add, then change. > > > > On 31/03/2016 07:15, Allan Jude wrote: > >> On 2016-03-31 02:13, Dustin Marquess wrote: >> >>> 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 >>> _______________________________________________ >>> freebsd-current@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-current >>> To unsubscribe, send any mail to " >>> freebsd-current-unsubscribe@freebsd.org" >>> >>> gnop should work, and you'd set the ashift before you add the devices. >> So add the hard drives with it set to 9, then set it to 13 and add the >> SLOG >> >> > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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