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Re: [Qemu-devel] trim in windows guest witch virtio

From: Paolo Bonzini
Subject: Re: [Qemu-devel] trim in windows guest witch virtio
Date: Tue, 23 Jul 2013 08:34:49 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7

Il 23/07/2013 03:05, Libaiqing ha scritto:
> Hi paolo,
>     Recently I test trim function,and it works well in linux guest with ext4 
> fs.
>     How to test it in windows guest? I got some info like this: 
>       1 windows7 can send discard command when the storage device is ssd;
>       2 find a tool like 'fstrim', 'TRIM' the volume manually.

I think it only works with IDE and AHCI on Windows.  You need a filter
driver to send it on SCSI disks.


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