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From: Thomas Glanzmann <thomas@glanzmann.de>
To: Arjan van de Ven <arjan@infradead.org>
Cc: tytso@thunk.org, LKML <linux-kernel@vger.kernel.org>,
	linux-ext4@vger.kernel.org
Subject: Re: zero out blocks of freed user data for operation a virtual machine environment
Date: Sun, 24 May 2009 19:39:33 +0200	[thread overview]
Message-ID: <20090524173933.GD24753@cip.informatik.uni-erlangen.de> (raw)
In-Reply-To: <20090524101551.57b706e9@infradead.org>

Hello,

> > tunable feature that zeroes our free data

> wouldn't it be better if the VM's would just support the TRIM command?

the resources available to me indicate that the TRIM command is a not
yet standarized command targeted at SSD disks to indicate free disk
space. Does ext3/4 trigger a block device layer call that could result
in a TRIM command?

        Thomas

  reply	other threads:[~2009-05-24 17:39 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-24 17:00 zero out blocks of freed user data for operation a virtual machine environment Thomas Glanzmann
2009-05-24 17:15 ` Arjan van de Ven
2009-05-24 17:39   ` Thomas Glanzmann [this message]
2009-05-25 12:03     ` Theodore Tso
2009-05-25 12:34       ` Thomas Glanzmann
2009-05-25 13:14         ` Goswin von Brederlow
2009-05-25 14:01           ` Thomas Glanzmann
     [not found]           ` <f3177b9e0905251023n762b815akace1ae34e643458e@mail.gmail.com>
2009-05-25 17:26             ` Chris Worley
2009-05-25 17:26               ` Chris Worley
2009-05-26 10:22             ` Goswin von Brederlow
2009-05-26 10:22               ` Goswin von Brederlow
2009-05-26 16:52               ` Chris Worley
2009-05-26 16:52                 ` Chris Worley
2009-05-28 19:27                 ` Goswin von Brederlow
2009-05-28 19:27                   ` Goswin von Brederlow
2009-05-25  3:29 ` David Newall
2009-05-25  5:26   ` Thomas Glanzmann
2009-05-25  7:48 ` Ron Yorston
2009-05-25 10:50   ` Thomas Glanzmann
2009-05-25 12:06 ` Theodore Tso
2009-05-25 21:19 ` Bill Davidsen
2009-05-26  4:45   ` Thomas Glanzmann

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