User reports that using mount_null destroyed his filesystem, I reply
that nullfs really doesn't work, he askes why this isn't noted for the "dangerous" filesystems, I go "hmmm."
This commit is contained in:
parent
cf9443f92b
commit
558408f95d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=42003
@ -35,7 +35,7 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)mount_null.8 8.6 (Berkeley) 5/1/95
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.\" @(#)mount_null.8 8.6 (Berkeley) 5/1/95
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.\" $Id: mount_null.8,v 1.8 1997/03/11 12:33:34 peter Exp $
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.\" $Id: mount_null.8,v 1.9 1998/07/06 07:17:26 charnier Exp $
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.\"
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.\"
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.Dd May 1, 1995
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.Dd May 1, 1995
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.Dt MOUNT_NULL 8
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.Dt MOUNT_NULL 8
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@ -228,6 +228,16 @@ is that vnodes arguments must be manually mapped.
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.sp
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.sp
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UCLA Technical Report CSD-910056,
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UCLA Technical Report CSD-910056,
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.Em "Stackable Layers: an Architecture for File System Development" .
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.Em "Stackable Layers: an Architecture for File System Development" .
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.Sh BUGS
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THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
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AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR
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OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET.
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This code also needs an owner in order to be less dangerous - serious
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hackers can apply by sending mail to hackers@freebsd.org and announcing
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their intent to take it over.
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.Sh HISTORY
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.Sh HISTORY
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The
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The
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.Nm
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.Nm
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@ -35,7 +35,7 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)mount_null.8 8.6 (Berkeley) 5/1/95
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.\" @(#)mount_null.8 8.6 (Berkeley) 5/1/95
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.\" $Id: mount_null.8,v 1.8 1997/03/11 12:33:34 peter Exp $
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.\" $Id: mount_null.8,v 1.9 1998/07/06 07:17:26 charnier Exp $
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.\"
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.\"
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.Dd May 1, 1995
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.Dd May 1, 1995
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.Dt MOUNT_NULL 8
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.Dt MOUNT_NULL 8
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@ -228,6 +228,16 @@ is that vnodes arguments must be manually mapped.
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.sp
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.sp
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UCLA Technical Report CSD-910056,
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UCLA Technical Report CSD-910056,
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.Em "Stackable Layers: an Architecture for File System Development" .
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.Em "Stackable Layers: an Architecture for File System Development" .
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.Sh BUGS
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THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
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AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR
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OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET.
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This code also needs an owner in order to be less dangerous - serious
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hackers can apply by sending mail to hackers@freebsd.org and announcing
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their intent to take it over.
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.Sh HISTORY
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.Sh HISTORY
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The
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The
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.Nm
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.Nm
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@ -34,7 +34,7 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)mount_umap.8 8.4 (Berkeley) 5/1/95
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.\" @(#)mount_umap.8 8.4 (Berkeley) 5/1/95
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.\" $Id$
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.\" $Id: mount_umap.8,v 1.8 1998/07/15 06:12:31 charnier Exp $
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.\"
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.\"
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.Dd May 1, 1995
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.Dd May 1, 1995
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.Dt MOUNT_UMAP 8
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.Dt MOUNT_UMAP 8
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@ -123,6 +123,16 @@ sophisticated.
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.Sh SEE ALSO
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.Sh SEE ALSO
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.Xr mount 8 ,
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.Xr mount 8 ,
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.Xr mount_null 8
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.Xr mount_null 8
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.Sh BUGS
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THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
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AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR
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OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET.
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This code also needs an owner in order to be less dangerous - serious
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hackers can apply by sending mail to hackers@freebsd.org and announcing
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their intent to take it over.
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.Sh HISTORY
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.Sh HISTORY
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The
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The
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.Nm
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.Nm
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@ -34,7 +34,7 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)mount_umap.8 8.4 (Berkeley) 5/1/95
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.\" @(#)mount_umap.8 8.4 (Berkeley) 5/1/95
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.\" $Id$
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.\" $Id: mount_umap.8,v 1.8 1998/07/15 06:12:31 charnier Exp $
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.\"
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.\"
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.Dd May 1, 1995
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.Dd May 1, 1995
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.Dt MOUNT_UMAP 8
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.Dt MOUNT_UMAP 8
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@ -123,6 +123,16 @@ sophisticated.
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.Sh SEE ALSO
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.Sh SEE ALSO
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.Xr mount 8 ,
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.Xr mount 8 ,
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.Xr mount_null 8
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.Xr mount_null 8
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.Sh BUGS
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THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
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AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR
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OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET.
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This code also needs an owner in order to be less dangerous - serious
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hackers can apply by sending mail to hackers@freebsd.org and announcing
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their intent to take it over.
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.Sh HISTORY
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.Sh HISTORY
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The
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The
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.Nm
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.Nm
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@ -33,7 +33,7 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)mount_union.8 8.6 (Berkeley) 3/27/94
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.\" @(#)mount_union.8 8.6 (Berkeley) 3/27/94
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.\" $Id$
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.\" $Id: mount_union.8,v 1.4 1998/07/15 06:13:45 charnier Exp $
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.\"
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.\"
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.Dd March 27, 1994
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.Dd March 27, 1994
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.Dt MOUNT_UNION 8
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.Dt MOUNT_UNION 8
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@ -183,6 +183,15 @@ accessible via
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.Xr mount 8 ,
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.Xr mount 8 ,
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.Xr mount_null 8
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.Xr mount_null 8
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.Sh BUGS
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.Sh BUGS
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THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
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AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR
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OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET.
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This code also needs an owner in order to be less dangerous - serious
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hackers can apply by sending mail to hackers@freebsd.org and announcing
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their intent to take it over.
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Without whiteout support from the filesystem backing the upper layer,
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Without whiteout support from the filesystem backing the upper layer,
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there is no way that delete and rename operations on lower layer
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there is no way that delete and rename operations on lower layer
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objects can be done.
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objects can be done.
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@ -200,3 +209,4 @@ The
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.Nm
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.Nm
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command first appeared in
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command first appeared in
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.Bx 4.4 .
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.Bx 4.4 .
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It first worked in FreeBSD-(fill this in).
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@ -33,7 +33,7 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)mount_union.8 8.6 (Berkeley) 3/27/94
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.\" @(#)mount_union.8 8.6 (Berkeley) 3/27/94
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.\" $Id$
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.\" $Id: mount_union.8,v 1.4 1998/07/15 06:13:45 charnier Exp $
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.\"
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.\"
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.Dd March 27, 1994
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.Dd March 27, 1994
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.Dt MOUNT_UNION 8
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.Dt MOUNT_UNION 8
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@ -183,6 +183,15 @@ accessible via
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.Xr mount 8 ,
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.Xr mount 8 ,
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.Xr mount_null 8
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.Xr mount_null 8
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.Sh BUGS
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.Sh BUGS
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THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
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AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR
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OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET.
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This code also needs an owner in order to be less dangerous - serious
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hackers can apply by sending mail to hackers@freebsd.org and announcing
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their intent to take it over.
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Without whiteout support from the filesystem backing the upper layer,
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Without whiteout support from the filesystem backing the upper layer,
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there is no way that delete and rename operations on lower layer
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there is no way that delete and rename operations on lower layer
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objects can be done.
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objects can be done.
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@ -200,3 +209,4 @@ The
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.Nm
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.Nm
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command first appeared in
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command first appeared in
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.Bx 4.4 .
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.Bx 4.4 .
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It first worked in FreeBSD-(fill this in).
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Block a user