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Date: Fri, 26 Mar 2010 12:37:33 +0100
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [dm-crypt] Performance with SSD with TRIM in mind?
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To: Svein Tonning <svein.tonning@gmail.com>
Cc: dm-crypt@saout.de

On 03/26/2010 11:34 AM, Svein Tonning wrote:
> Tomorrow I will upgrade my laptop. With and SSD. My question is does
> luks/the-encryption destroy the TRIM functionality? 
> Because ext4 is suppose to talk to kernel, and the kernel then issues
> the trim command to the hdd. ext4 is on top of the encryption. 
> That is why i'm asking. 

Currently device-mapper (thus dm-crypt too) have no TRIM support,
but it is planned to be implemented (soon). no ETA yet, sorry.
So it will work but without TRIM support.

Milan