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Add .zfs control directory

Browse Source 
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 .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 <rohan.puri15@gmail.com>
Contributiobs-by: Andrew Barnes <barnes333@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #173
This commit is contained in:
Brian Behlendorf
2011-11-11 12:45:53 +05:30
parent 49be0ccf1f
commit ebe7e575ea
79 changed files with 2039 additions and 103 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Makefile.in
+1
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@@ -39,6 +39,7 @@ DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libavl/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libavl
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libefi/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libefi
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libnvpair/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libnvpair
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libshare/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libshare
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libspl
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/asm-generic/Makefile.in
+1
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@@ -40,6 +40,7 @@ subdir = lib/libspl/asm-generic
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/asm-i386/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/asm-x86_64/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/ia32/Makefile.in
+1
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@@ -39,6 +39,7 @@ DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/ia32/sys/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/rpc/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/sys/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/sys/dktp/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/sys/sysevent/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libspl/include/util/Makefile.in
+1
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@@ -41,6 +41,7 @@ DIST_COMMON = $(libspl_HEADERS) $(srcdir)/Makefile.am \
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libunicode/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libunicode
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libuutil/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libuutil
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libzfs/Makefile.in
+1
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@@ -41,6 +41,7 @@ subdir = lib/libzfs
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
lib/libzpool/Makefile.am
+2
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@@ -97,6 +97,7 @@ libzpool_la_LDFLAGS = -pthread -version-info 1:1:0
EXTRA_DIST = \
$(top_srcdir)/module/zfs/vdev_disk.c \
$(top_srcdir)/module/zfs/zfs_acl.c \
$(top_srcdir)/module/zfs/zfs_ctldir.c \
$(top_srcdir)/module/zfs/zfs_dir.c \
$(top_srcdir)/module/zfs/zfs_ioctl.c \
$(top_srcdir)/module/zfs/zfs_log.c \
@@ -105,6 +106,7 @@ EXTRA_DIST = \
$(top_srcdir)/module/zfs/zfs_rlock.c \
$(top_srcdir)/module/zfs/zfs_vfsops.c \
$(top_srcdir)/module/zfs/zfs_vnops.c \
$(top_srcdir)/module/zfs/zpl_ctldir.c \
$(top_srcdir)/module/zfs/zpl_export.c \
$(top_srcdir)/module/zfs/zpl_file.c \
$(top_srcdir)/module/zfs/zpl_inode.c \
lib/libzpool/Makefile.in
+3
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@@ -41,6 +41,7 @@ subdir = lib/libzpool
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-automount.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
@@ -455,6 +456,7 @@ libzpool_la_LDFLAGS = -pthread -version-info 1:1:0
EXTRA_DIST = \
$(top_srcdir)/module/zfs/vdev_disk.c \
$(top_srcdir)/module/zfs/zfs_acl.c \
$(top_srcdir)/module/zfs/zfs_ctldir.c \
$(top_srcdir)/module/zfs/zfs_dir.c \
$(top_srcdir)/module/zfs/zfs_ioctl.c \
$(top_srcdir)/module/zfs/zfs_log.c \
@@ -463,6 +465,7 @@ EXTRA_DIST = \
$(top_srcdir)/module/zfs/zfs_rlock.c \
$(top_srcdir)/module/zfs/zfs_vfsops.c \
$(top_srcdir)/module/zfs/zfs_vnops.c \
$(top_srcdir)/module/zfs/zpl_ctldir.c \
$(top_srcdir)/module/zfs/zpl_export.c \
$(top_srcdir)/module/zfs/zpl_file.c \
$(top_srcdir)/module/zfs/zpl_inode.c \