Date: Sun, 8 Mar 2015 17:50:46 -0500 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-geom@freebsd.org Subject: Re: RFC: Pass TRIM through GELI Message-ID: <20150308225046.GS1742@over-yonder.net> In-Reply-To: <54FCCFC3.4000007@multiplay.co.uk> References: <20150308000131.GP1742@over-yonder.net> <54FC4E99.4080202@multiplay.co.uk> <20150308223552.GR1742@over-yonder.net> <54FCCFC3.4000007@multiplay.co.uk>
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On Sun, Mar 08, 2015 at 10:40:03PM +0000 I heard the voice of Steven Hartland, and lo! it spake thus: > > Given GEIL is all about security translating the delete to a noop > results in a pretty serious security issue I would say as it will > leave data which he user intended to be removed present on the > device. But we're not translating it to anything; we're just passing it along. Certainly in my testing (Virtualbox-provided ada0, which doesn't TRIM, and md(4), which does) ufs and zfs seem to get the message just fine. If a poorly-behaved filesystem ignores the "I don't support that" message from our provider (SSD, hard drive, md(4), whatever), wouldn't it ignore us just the same? -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.
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