From owner-freebsd-fs@FreeBSD.ORG  Mon Sep 24 14:17:19 2012
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From: Bob Bishop <rb@gid.co.uk>
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Date: Mon, 24 Sep 2012 15:17:11 +0100
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To: Pawel Jakub Dawidek <pjd@freebsd.org>
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Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org
Subject: Re: ZFS TRIM support committed to HEAD.
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Hi,

On 23 Sep 2012, at 23:25, Pawel Jakub Dawidek wrote:

> I have a patch against stable/8, but not stable/9:
> 
> 	http://people.freebsd.org/~pjd/patches/zfstrim8.patch

Running with that in an otherwise 8-STABLE GENERIC amd64 kernel, I'm getting:

kstat.zfs.misc.zio_trim.zio_trim_bytes: 0
kstat.zfs.misc.zio_trim.zio_trim_success: 0
kstat.zfs.misc.zio_trim.zio_trim_unsupported: 0
kstat.zfs.misc.zio_trim.zio_trim_failed: 2742

which doesn't look like it's working. The SSDs are:

ad4: 114473MB <ADATA SSD S510 120GB 3.3.2> at ata2-master UDMA100 SATA 3Gb/s
ad6: 114473MB <ADATA SSD S510 120GB 3.3.2> at ata3-master UDMA100 SATA 3Gb/s

Any suggestions? Thanks

--
Bob Bishop
rb@gid.co.uk