linux-ext4 - Re: discard + LVM

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Message-ID: <4B949EF7.20302@zappa.cx>
Date:	Mon, 08 Mar 2010 07:53:43 +0100
From:	Andreas Sundstrom <sunkan@...pa.cx>
To:	linux-ext4@...r.kernel.org
CC:	"Martin K. Petersen" <martin.petersen@...cle.com>
Subject: Re: discard + LVM

Martin K. Petersen wrote:
>>>>>> "Eric" == Eric Sandeen <sandeen@...hat.com> writes:
>
> Eric> Andreas Sundstrom wrote:
>>> Hi..
>>>
>>> I have an OCZ agility SSD drive with FW 1.5 that supports the
>>> TRIM command.
>>>
>>> I can see that it works on a plain partition.  But it does not
>>> seem to work together with LVM.
>>>
>>> So I'm wondering if this is expected and whether it is something
>>> that will be worked on to get fixed?
>
> Eric> It is expected, as lvm is not yet passing discard requests.
>
> I'm working on this.  Missed the 2.6.34 merge window so I'm aiming at
>  2.6.35.

Ah, that sounds good. I tried mailing the dm-devel list but my mail
didn't seem to make it. Let me know if you need testing done for this,
I should be able to test it if you want.

/Andreas
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