Date: Tue, 19 Apr 2016 15:08:35 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r298271 - head/sbin/tunefs Message-ID: <201604191508.u3JF8ZFQ039041@repo.freebsd.org>
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Author: trasz Date: Tue Apr 19 15:08:35 2016 New Revision: 298271 URL: https://svnweb.freebsd.org/changeset/base/298271 Log: Mention fsck_ffs -E in tunefs(8). It's non-obvious that one should use it after enabling TRIM. Reviewed by: brueffer@ MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D5928 Modified: head/sbin/tunefs/tunefs.8 Modified: head/sbin/tunefs/tunefs.8 ============================================================================== --- head/sbin/tunefs/tunefs.8 Tue Apr 19 15:07:04 2016 (r298270) +++ head/sbin/tunefs/tunefs.8 Tue Apr 19 15:08:35 2016 (r298271) @@ -28,7 +28,7 @@ .\" @(#)tunefs.8 8.2 (Berkeley) 12/11/93 .\" $FreeBSD$ .\" -.Dd June 22, 2011 +.Dd April 19, 2016 .Dt TUNEFS 8 .Os .Sh NAME @@ -166,9 +166,15 @@ device for each freed block. The trim enable flag is typically set when the underlying device uses flash-memory as the device can use the delete command to pre-zero or at least avoid copying blocks that have been deleted. +.Pp +Note that this does not trim blocks that are already free. +See the +.Xr fsck_ffs 8 +.Fl E +flag. .El .Pp -At least one of the above flags is required. +At least one of these flags is required. .Sh FILES .Bl -tag -width ".Pa /etc/fstab" .It Pa /etc/fstab
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