Date: Sat, 08 Aug 2015 09:51:54 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 198863] [patch] geli: TRIM passthru Message-ID: <bug-198863-8-SlZqgfMt7F@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-198863-8@https.bugs.freebsd.org/bugzilla/> References: <bug-198863-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198863 --- Comment #6 from commit-hook@freebsd.org --- A commit references this bug: Author: pjd Date: Sat Aug 8 09:51:41 UTC 2015 New revision: 286444 URL: https://svnweb.freebsd.org/changeset/base/286444 Log: Enable BIO_DELETE passthru in GELI, so TRIM/UNMAP can work as expected when GELI is used on a SSD or inside virtual machine, so that guest can tell host that it is no longer using some of the storage. Enabling BIO_DELETE passthru comes with a small security consequence - an attacker can tell how much space is being really used on encrypted device and has less data no analyse then. This is why the -T option can be given to the init subcommand to turn off this behaviour and -t/T options for the configure subcommand can be used to adjust this setting later. PR: 198863 Submitted by: Matthew D. Fuller fullermd at over-yonder dot net This commit also includes a fix from Fabian Keil freebsd-listen at fabiankeil.de for 'configure' on onetime providers which is not strictly related, but is entangled in the same code, so would cause conflicts if separated out. Changes: head/sbin/geom/class/eli/geli.8 head/sbin/geom/class/eli/geom_eli.c head/sys/geom/eli/g_eli.c head/sys/geom/eli/g_eli.h head/sys/geom/eli/g_eli_ctl.c -- You are receiving this mail because: You are the assignee for the bug.
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