From: Lutz Vieweg <lvml@5t9.de>
To: linux-raid@vger.kernel.org
Subject: Re: Software RAID and TRIM
Date: Wed, 20 Jul 2011 12:39:58 +0200 [thread overview]
Message-ID: <j06b9u$9aj$1@dough.gmane.org> (raw)
In-Reply-To: <j046mj$1pn$1@dough.gmane.org>
On 07/19/2011 05:06 PM, David Brown wrote:
> It certainly sounds like a safe procedure, but I can see why you feel it's not quite as elegant as
> it could be. You will also be "discarding" blocks that have never been written (at least, not since
> the last discard...) - is there much overhead in that?
Luckily the SSDs we use do not require significant time to process a discard
on areas that were already free - e.g. discarding ~ 250G of SSD space that is
already empty this way takes only ~ 10 seconds.
Regards,
Lutz Vieweg
next prev parent reply other threads:[~2011-07-20 10:39 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-28 15:31 Software RAID and TRIM Tom De Mulder
2011-06-28 16:11 ` Mathias Burén
2011-06-29 10:32 ` Tom De Mulder
2011-06-29 10:45 ` NeilBrown
2011-06-29 11:10 ` Tom De Mulder
2011-06-29 11:48 ` Scott E. Armitage
2011-06-29 12:46 ` Roberto Spadim
2011-06-29 12:46 ` David Brown
2011-06-30 0:28 ` NeilBrown
2011-06-30 7:50 ` David Brown
2011-06-29 13:39 ` Namhyung Kim
2011-06-30 0:27 ` NeilBrown
2011-07-17 22:11 ` Lutz Vieweg
2011-07-17 21:57 ` Lutz Vieweg
2011-06-29 10:33 ` Tom De Mulder
2011-06-29 12:42 ` David Brown
2011-06-29 12:55 ` Tom De Mulder
2011-06-29 13:02 ` Roberto Spadim
2011-06-29 13:10 ` David Brown
2011-06-30 5:51 ` Mikael Abrahamsson
2011-07-04 9:13 ` Tom De Mulder
2011-07-04 16:26 ` Werner Fischer
2011-07-17 22:31 ` Lutz Vieweg
2011-07-17 22:16 ` Lutz Vieweg
2011-07-17 22:00 ` Lutz Vieweg
2011-06-28 16:17 ` Johannes Truschnigg
2011-06-28 16:40 ` David Brown
2011-07-17 21:52 ` Lutz Vieweg
2011-07-18 5:14 ` Mikael Abrahamsson
2011-07-18 10:35 ` David Brown
2011-07-18 10:48 ` Tom De Mulder
2011-07-18 18:09 ` Lutz Vieweg
2011-07-18 20:18 ` David Brown
2011-07-19 9:29 ` Lutz Vieweg
2011-07-19 10:22 ` David Brown
2011-07-19 13:41 ` Lutz Vieweg
2011-07-19 15:06 ` David Brown
2011-07-20 10:39 ` Lutz Vieweg [this message]
2011-07-19 14:19 ` Tom De Mulder
2011-07-20 7:42 ` David Brown
2011-07-20 12:20 ` Lutz Vieweg
2011-07-20 12:13 ` Werner Fischer
2011-07-20 12:25 ` Lutz Vieweg
2011-07-18 10:53 ` Tom De Mulder
2011-07-18 12:13 ` Werner Fischer
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