Re: What happened to TRIM support for raid linear/0/1/10?
From: Lutz Vieweg
Date: Wed Aug 08 2012 - 13:59:07 EST
On 08/08/2012 03:10 PM, Holger Kiehl wrote:
Personally, I would think that TRIM support MD would be a very good thing.
That's one thing I am waiting for, too.
We had to implement a somewhat clumsy user-space application which does
the trick for us - but that is an ugly work-around, as it has to allocate
most of the free space on a filesystem for at least a little while (to know
what blocks it can discard).
Without periodic discard runs, our SSD-equipped servers suffer a ~50% write
performance penalty, so this feature is not just a cosmetic issue to us.
Regards,
Lutz Vieweg
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