Add: Add-.zfs-control-directory.patch

Add support for the .zfs control directory.  This was accomplished
by leveraging as much of the existing ZFS infrastructure as posible
and updating it for Linux as required.  The bulk of the core
functionality is now all there with the following limitations.

*) The .zfs/snapshot directory automount support requires a 2.6.37
   or newer kernel.  The exception is RHEL6.2 which has backported
   the d_automount patches.

*) Creating/destroying/renaming snapshots with mkdir/rmdir/mv
   in the .zfs/snapshot directory works as expected.  However,
   this functionality is only available to root until zfs
   delegations are finished.

      * mkdir - create a snapshot
      * rmdir - destroy a snapshot
      * mv    - rename a snapshot

The following issues are known defeciences, but we expect them to
be addressed by future commits.

*) Add automount support for kernels older the 2.6.37.  This should
   be possible using follow_link() which is what Linux did before.

*) Accessing the the .zfs/snapshot directory via NFS is not yet
   possible.  The majority of the ground work for this is complete.
   However, finishing this work will require resolving some lingering
   integration issues with the Linux NFS kernel server.

*) The .zfs/shares directory exists but no futher smb functionality
   has yet been implemented.

Contributions-by: Rohan Puri <[email protected]>
Contributiobs-by: Andrew Barnes <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #173

debian/patches/0001-Prevent-manual-builds-in-the-DKMS-source.patch

@@ -1,7 +1,7 @@
-From d93e090fd9490eed0563f0bfaef8be5a5b5cf90d Mon Sep 17 00:00:00 2001
+From e226a12f50759eb7269a3957581ed61fcf9e9cc4 Mon Sep 17 00:00:00 2001
 From: Darik Horn <[email protected]>
 Date: Tue, 17 Jan 2012 19:45:07 -0600
-Subject: [PATCH 1/7] Prevent manual builds in the DKMS source.
+Subject: [PATCH 1/8] Prevent manual builds in the DKMS source.
 
 Print an instructive error messsage and exit if the `dkms.conf` file
 exists when the userland is configured. (ie: `--with-config=user`)
@@ -53,7 +53,7 @@ index 4fcef3d..16b8a76 100644
  	ZFS_AC_CONFIG_USER_ARCH
  	ZFS_AC_CONFIG_USER_IOCTL
 diff --git a/config/zfs-build.m4 b/config/zfs-build.m4
-index 823f332..32fc6ab 100644
+index c5983d3..be1edfa 100644
 --- a/config/zfs-build.m4
 +++ b/config/zfs-build.m4
 @@ -58,10 +58,10 @@ AC_DEFUN([ZFS_AC_CONFIG], [

debian/patches/0002-Remove-the-COPYING-file.patch

@@ -1,7 +1,7 @@
-From f752df7e1e9be1346b7044ec70e0ec795e72ed0b Mon Sep 17 00:00:00 2001
+From 3fbf212d9233c60cafd2d6357dacd496e51930f3 Mon Sep 17 00:00:00 2001
 From: Darik Horn <[email protected]>
 Date: Tue, 17 Jan 2012 22:18:47 -0600
-Subject: [PATCH 2/7] Remove the COPYING file.
+Subject: [PATCH 2/8] Remove the COPYING file.
 
 Resolve this lintian warning by removing the COPYING file:
 

debian/patches/0003-Remove-all-upstream-init.d-components.patch

@@ -1,7 +1,7 @@
-From 1cd781902bbf986a16b1fbcf82c50de6fda4a7c0 Mon Sep 17 00:00:00 2001
+From 049b1b4d3fdc31008aa8f40fb21049b7b16f984a Mon Sep 17 00:00:00 2001
 From: Darik Horn <[email protected]>
 Date: Tue, 17 Jan 2012 11:54:21 -0600
-Subject: [PATCH 3/7] Remove all upstream init.d components.
+Subject: [PATCH 3/8] Remove all upstream init.d components.
 
 The etc/init.d/ components are redundant because the debian/ overlay
 bundles init files according to Debian packaging policy.

debian/patches/0004-Remove-the-upstream-dracut-component.patch

@@ -1,7 +1,7 @@
-From 84858495e0923fbf94fb331fb05953a598c84959 Mon Sep 17 00:00:00 2001
+From 444cc1a251e06c40918178c670a17742deeb2ca7 Mon Sep 17 00:00:00 2001
 From: Darik Horn <[email protected]>
 Date: Tue, 17 Jan 2012 20:27:32 -0600
-Subject: [PATCH 4/7] Remove the upstream dracut component.
+Subject: [PATCH 4/8] Remove the upstream dracut component.
 
 The dracut/ component broke deb systems when it first added to the
 upstream ZoL repository, had a near-zero download count when it was

debian/patches/0005-Remove-userland-dist-rules.patch

@@ -1,7 +1,7 @@
-From d72cecab4b0d15082796648314a33fad36c25a1e Mon Sep 17 00:00:00 2001
+From 31a84f1e6d3a050469a1170b80de1ea1e9d7a856 Mon Sep 17 00:00:00 2001
 From: Darik Horn <[email protected]>
 Date: Tue, 17 Jan 2012 22:23:16 -0600
-Subject: [PATCH 5/7] Remove userland dist rules.
+Subject: [PATCH 5/8] Remove userland dist rules.
 
 The `make dist` rule is used to create the DKMS source package, which
 does not contain the userland. (eg: Dist --with-config=kernel only.)

debian/patches/0006-Improve-the-with-spl-error-for-DKMS-systems.patch

@@ -1,7 +1,7 @@
-From d50295867c2d105b0db793660afa51e09ac6f520 Mon Sep 17 00:00:00 2001
+From 1ee1fa02519991f3a98fd7ec548b395d12a9d16d Mon Sep 17 00:00:00 2001
 From: Darik Horn <[email protected]>
 Date: Fri, 3 Feb 2012 14:49:49 -0600
-Subject: [PATCH 6/7] Improve the --with-spl error for DKMS systems.
+Subject: [PATCH 6/8] Improve the --with-spl error for DKMS systems.
 
 If the SPL module is unavailable, then the operator gets an error
 message that does not apply to installations that are mananged by

debian/patches/0007-Integrate-ARC-more-tightly-with-Linux.patch

@@ -1,7 +1,7 @@
-From 6bce26a67ad5ea4e26bb8aaa69357ffd6806db48 Mon Sep 17 00:00:00 2001
+From 3fae6446c3a99e380199e54515b3969f3a864b5e Mon Sep 17 00:00:00 2001
 From: Brian Behlendorf <[email protected]>
 Date: Tue, 13 Mar 2012 14:29:16 -0700
-Subject: [PATCH 7/7] Integrate ARC more tightly with Linux
+Subject: [PATCH 7/8] Integrate ARC more tightly with Linux
 
 Under Solaris the ARC was designed to stay one step ahead of the
 VM subsystem.  It would attempt to recognize low memory situtions