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From: Jia-Shiun Li <jiashiun@gmail.com>
Date: Thu, 9 Jan 2014 12:04:17 +0800
Message-ID: <CAHNYxxNEin+CoHi9h7-J1rTaeDK+ytAOepM5Cg7YHTCY+OT3hg@mail.gmail.com>
Subject: Re: Is TRIM working with gmirror?
To: Miroslav Lachman <000.fbsd@quip.cz>
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Cc: Karl Pielorz <kpielorz_lst@tdx.co.uk>,
 Steven Hartland <killing@multiplay.co.uk>, freebsd-geom@freebsd.org
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On Thu, Jan 9, 2014 at 6:04 AM, Miroslav Lachman <000.fbsd@quip.cz> wrote:
> Steven Hartland wrote:
> It is production server, so I can't play with it and try 10.x, but we are
> running some other servers on 9.2, so if 9.2 gmirror has support for TRIM, I
> can upgrade this server to 9.2.

According to release notes, gmirror TRIM is supported since 9.1R.

I did a little test on 9.2R livecd environment with commands you
stated in previous mail. Both amd64 & i386 work. 2 md devices were
used as backend device, but it should not differ since gmirror reports
'candelete' attribute regardless of backend capability.

The above seem to conflict with your result on 9.2 test machines.
Could you confirm that? Maybe there's something missing.

Regards,
Jia-Shiun.