[Lustre-discuss] Lustre and SSD hard disk

[sd a]

as far as I know, since 2.6.33, linux supports 'full' TRIM command, the IO
problem is solved

On Tue, Nov 23, 2010 at 4:07 PM, Andreas Dilger
<andreas.dilger at oracle.com>wrote:

> Note that testing of the "discard" mount option (by other ext4 filesystem
> developers, not related to Lustre) has shown that it can significantly hurt
> the io performance due to the slowness of the TRIM commands, and the kernel
> implements TRIM like a barrier so it slows down all of the IO.
>
> Cheers, Andreas
> --
> Andreas Dilger
> Lustre Technical Lead
> Oracle Corporation Canada Inc.
>
>
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