diff options
Diffstat (limited to 'sbin/fsck_ffs/fsck_ffs.8')
| -rw-r--r-- | sbin/fsck_ffs/fsck_ffs.8 | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/sbin/fsck_ffs/fsck_ffs.8 b/sbin/fsck_ffs/fsck_ffs.8 index 2834149..523cb65 100644 --- a/sbin/fsck_ffs/fsck_ffs.8 +++ b/sbin/fsck_ffs/fsck_ffs.8 @@ -29,7 +29,7 @@ .\" @(#)fsck.8 8.4 (Berkeley) 5/9/95 .\" $FreeBSD$ .\" -.Dd January 25, 2009 +.Dd April 27, 2011 .Dt FSCK_FFS 8 .Os .Sh NAME @@ -38,7 +38,7 @@ .Nd file system consistency check and interactive repair .Sh SYNOPSIS .Nm -.Op Fl BFfnpry +.Op Fl BEFfnpry .Op Fl b Ar block .Op Fl c Ar level .Op Fl m Ar mode @@ -149,6 +149,24 @@ If unexpected errors are found, the file system is marked as needing a foreground check and .Nm exits without attempting any further cleaning. +.It Fl E +Clear unallocated blocks, notifying the underlying device that they +are not used and that their contents may be discarded. +This is useful for filesystems which have been mounted on systems +without TRIM support, or with TRIM support disabled, as well as +filesystems which have been copied from one device to another. +.Pp +See the +.Fl E +and +.Fl t +flags of +.Xr newfs 8 , +and +the +.Fl t +flag of +.Xr tunefs 8 . .It Fl F Determine whether the file system needs to be cleaned immediately in foreground, or if its cleaning can be deferred to background. |
