Support building a zfs-modules-dkms sub package

This commit adds support for building a zfs-modules-dkms sub package
built around Dynamic Kernel Module Support. This is to allow building
packages using the DKMS infrastructure which is intended to ease the
burden of kernel version changes, upgrades, etc.

By default zfs-modules-dkms-* sub package will be built as part of
the 'make rpm' target.  Alternately, you can build only the DKMS
module package using the 'make rpm-dkms' target.

Examples:

    # To build packaged binaries as well as a dkms packages
    $ ./configure && make rpm

    # To build only the packaged binary utilities and dkms packages
    $ ./configure && make rpm-utils rpm-dkms

Note: Only the RHEL 5/6, CHAOS 5, and Fedora distributions are
      supported for building the dkms sub package.

Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #535

Makefile.am

@@ -16,6 +16,7 @@ EXTRA_DIST  = autogen.sh zfs.spec.in zfs-modules.spec.in
 EXTRA_DIST += config/config.awk config/rpm.am config/deb.am config/tgz.am
 EXTRA_DIST += META DISCLAIMER COPYRIGHT README.markdown
 EXTRA_DIST += OPENSOLARIS.LICENSE ZFS.RELEASE
+EXTRA_DIST += dkms.postinst
 noinst_HEADERS = zfs_config.h zfs.release
 
 distclean-local::

Makefile.in

@@ -44,7 +44,7 @@ target_triplet = @target@
 DIST_COMMON = $(am__configure_deps) $(noinst_HEADERS) \
 	$(srcdir)/Makefile.am $(srcdir)/Makefile.in \
 	$(srcdir)/PKGBUILD-zfs-modules.in $(srcdir)/PKGBUILD-zfs.in \
-	$(srcdir)/zfs-modules.spec.in \
+	$(srcdir)/dkms.conf.in $(srcdir)/zfs-modules.spec.in \
 	$(srcdir)/zfs-script-config.sh.in $(srcdir)/zfs.release.in \
 	$(srcdir)/zfs.spec.in $(srcdir)/zfs_config.h.in \
 	$(top_srcdir)/config/arch.am $(top_srcdir)/config/deb.am \
@@ -135,7 +135,8 @@ CONFIG_CLEAN_FILES = module/Makefile module/avl/Makefile \
 	module/nvpair/Makefile module/unicode/Makefile \
 	module/zcommon/Makefile module/zfs/Makefile \
 	module/zpios/Makefile zfs.spec zfs-modules.spec PKGBUILD-zfs \
-	PKGBUILD-zfs-modules zfs-script-config.sh zfs.release
+	PKGBUILD-zfs-modules zfs-script-config.sh zfs.release \
+	dkms.conf
 CONFIG_CLEAN_VPATH_FILES =
 AM_V_GEN = $(am__v_GEN_$(V))
 am__v_GEN_ = $(am__v_GEN_$(AM_DEFAULT_VERBOSITY))
@@ -382,7 +383,7 @@ AUTOMAKE_OPTIONS = foreign
 EXTRA_DIST = autogen.sh zfs.spec.in zfs-modules.spec.in \
 	config/config.awk config/rpm.am config/deb.am config/tgz.am \
 	META DISCLAIMER COPYRIGHT README.markdown OPENSOLARIS.LICENSE \
-	ZFS.RELEASE
+	ZFS.RELEASE dkms.postinst
 noinst_HEADERS = zfs_config.h zfs.release
 all: zfs_config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive
@@ -465,6 +466,8 @@ zfs-script-config.sh: $(top_builddir)/config.status $(srcdir)/zfs-script-config.
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 zfs.release: $(top_builddir)/config.status $(srcdir)/zfs.release.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
+dkms.conf: $(top_builddir)/config.status $(srcdir)/dkms.conf.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
 
 mostlyclean-libtool:
 	-rm -f *.lo
@@ -912,13 +915,16 @@ srpm-utils:
 
 srpm: srpm-modules srpm-utils
 
+rpm-dkms: srpm-modules
+@CONFIG_KERNEL_TRUE@	$(MAKE) $(AM_MAKEFLAGS) pkg="${PACKAGE}-modules" dkms-common
+
 rpm-modules: srpm-modules
 @CONFIG_KERNEL_TRUE@	$(MAKE) $(AM_MAKEFLAGS) pkg="${PACKAGE}-modules" rpm-common
 
 rpm-utils: srpm-utils
 @CONFIG_USER_TRUE@	$(MAKE) $(AM_MAKEFLAGS) pkg="${PACKAGE}" rpm-common
 
-rpm: rpm-modules rpm-utils
+rpm: rpm-modules rpm-utils rpm-dkms
 
 rpm-local:
 	@(if test "${HAVE_RPMBUILD}" = "no"; then \
@@ -937,6 +943,26 @@ rpm-local:
 	mkdir -p $(rpmbuild)/SOURCES && \
 	cp $(distdir).tar.gz $(rpmbuild)/SOURCES)
 
+dkms-common:
+	rpmpkg=$(pkg)-$(ZFS_META_VERSION)-$(ZFS_META_RELEASE).src.rpm; \
+	rpmspec=$(pkg).spec; \
+	rpmdkms=$(pkg)-dkms-$(ZFS_META_VERSION)-$(ZFS_META_RELEASE).noarch.rpm;\
+	rpmbuild=`mktemp -t -d $(PACKAGE)-build-$$USER-XXXXXXXX`; \
+	$(MAKE) $(AM_MAKEFLAGS) \
+		rpmbuild="$$rpmbuild" \
+		rpmspec="$$rpmspec" \
+		rpm-local || exit 1; \
+	$(RPMBUILD) \
+		--define "_tmppath $$rpmbuild/TMP" \
+		--define "_topdir $$rpmbuild" \
+		--define "dist %{nil}" \
+		--define "_without_kernel 1" \
+		--define "_without_kernel_debug 1" \
+		--define "_with_kernel_dkms 1" \
+		--nodeps --rebuild $$rpmpkg || exit 1; \
+	cp $$rpmbuild/RPMS/noarch/$$rpmdkms . || exit 1; \
+	$(RM) -R $$rpmbuild
+
 srpm-common: dist
 	rpmpkg=$(pkg)-$(ZFS_META_VERSION)-$(ZFS_META_RELEASE).src.rpm; \
 	rpmspec=$(pkg).spec; \

config/kernel.m4

@@ -281,14 +281,28 @@ AC_DEFUN([ZFS_AC_SPL], [
 
 	AC_MSG_CHECKING([spl source directory])
 	AS_IF([test -z "$splsrc"], [
+		dnl #
+		dnl # Look in the standard development package location
+		dnl #
 		sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
 		            2>/dev/null | tail -1`
 
-		AS_IF([test -z "$sourcelink" || test ! -e $sourcelink], [
+		dnl #
+		dnl # Look in the DKMS source location
+		dnl #
+		AS_IF([test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h], [
+			sourcelink=`ls -1d /var/lib/dkms/spl/*/build \
+			            2>/dev/null | tail -1`
+		])
+
+		dnl #
+		dnl # Look in the parent directory
+		dnl #
+		AS_IF([test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h], [
 			sourcelink=../spl
 		])
 
-		AS_IF([test -e $sourcelink], [
+		AS_IF([test -e $sourcelink/spl_config.h], [
 			splsrc=`readlink -f ${sourcelink}`
 		], [
 			AC_MSG_RESULT([Not found])

config/rpm.am

@@ -10,6 +10,11 @@ endif
 
 srpm: srpm-modules srpm-utils
 
+rpm-dkms: srpm-modules
+if CONFIG_KERNEL
+	$(MAKE) $(AM_MAKEFLAGS) pkg="${PACKAGE}-modules" dkms-common
+endif
+
 rpm-modules: srpm-modules
 if CONFIG_KERNEL
 	$(MAKE) $(AM_MAKEFLAGS) pkg="${PACKAGE}-modules" rpm-common
@@ -20,7 +25,7 @@ if CONFIG_USER
 	$(MAKE) $(AM_MAKEFLAGS) pkg="${PACKAGE}" rpm-common
 endif
 
-rpm: rpm-modules rpm-utils
+rpm: rpm-modules rpm-utils rpm-dkms
 
 rpm-local:
 	@(if test "${HAVE_RPMBUILD}" = "no"; then \
@@ -39,6 +44,26 @@ rpm-local:
 	mkdir -p $(rpmbuild)/SOURCES && \
 	cp $(distdir).tar.gz $(rpmbuild)/SOURCES)
 
+dkms-common:
+	rpmpkg=$(pkg)-$(ZFS_META_VERSION)-$(ZFS_META_RELEASE).src.rpm; \
+	rpmspec=$(pkg).spec; \
+	rpmdkms=$(pkg)-dkms-$(ZFS_META_VERSION)-$(ZFS_META_RELEASE).noarch.rpm;\
+	rpmbuild=`mktemp -t -d $(PACKAGE)-build-$$USER-XXXXXXXX`; \
+	$(MAKE) $(AM_MAKEFLAGS) \
+		rpmbuild="$$rpmbuild" \
+		rpmspec="$$rpmspec" \
+		rpm-local || exit 1; \
+	$(RPMBUILD) \
+		--define "_tmppath $$rpmbuild/TMP" \
+		--define "_topdir $$rpmbuild" \
+		--define "dist %{nil}" \
+		--define "_without_kernel 1" \
+		--define "_without_kernel_debug 1" \
+		--define "_with_kernel_dkms 1" \
+		--nodeps --rebuild $$rpmpkg || exit 1; \
+	cp $$rpmbuild/RPMS/noarch/$$rpmdkms . || exit 1; \
+	$(RM) -R $$rpmbuild
+
 srpm-common: dist
 	rpmpkg=$(pkg)-$(ZFS_META_VERSION)-$(ZFS_META_RELEASE).src.rpm; \
 	rpmspec=$(pkg).spec; \

configure

@@ -12288,17 +12288,25 @@ fi
 $as_echo_n "checking spl source directory... " >&6; }
 	if test -z "$splsrc"; then
 
-		sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
+								sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
 		            2>/dev/null | tail -1`
 
-		if test -z "$sourcelink" || test ! -e $sourcelink; then
+								if test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h; then
+
+			sourcelink=`ls -1d /var/lib/dkms/spl/*/build \
+			            2>/dev/null | tail -1`
+
+fi
+
+
+								if test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h; then
 
 			sourcelink=../spl
 
 fi
 
 
-		if test -e $sourcelink; then
+		if test -e $sourcelink/spl_config.h; then
 
 			splsrc=`readlink -f ${sourcelink}`
 
@@ -19889,17 +19897,25 @@ fi
 $as_echo_n "checking spl source directory... " >&6; }
 	if test -z "$splsrc"; then
 
-		sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
+								sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
 		            2>/dev/null | tail -1`
 
-		if test -z "$sourcelink" || test ! -e $sourcelink; then
+								if test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h; then
+
+			sourcelink=`ls -1d /var/lib/dkms/spl/*/build \
+			            2>/dev/null | tail -1`
+
+fi
+
+
+								if test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h; then
 
 			sourcelink=../spl
 
 fi
 
 
-		if test -e $sourcelink; then
+		if test -e $sourcelink/spl_config.h; then
 
 			splsrc=`readlink -f ${sourcelink}`
 
@@ -27352,7 +27368,7 @@ $as_echo_n "checking whether dmu tx validation is enabled... " >&6; }
 $as_echo "$enable_debug_dmu_tx" >&6; }
 
 
-ac_config_files="$ac_config_files Makefile dracut/Makefile dracut/90zfs/Makefile udev/Makefile udev/rules.d/Makefile etc/Makefile etc/init.d/Makefile etc/zfs/Makefile man/Makefile man/man5/Makefile man/man8/Makefile lib/Makefile lib/libspl/Makefile lib/libspl/asm-generic/Makefile lib/libspl/asm-i386/Makefile lib/libspl/asm-x86_64/Makefile lib/libspl/include/Makefile lib/libspl/include/ia32/Makefile lib/libspl/include/ia32/sys/Makefile lib/libspl/include/rpc/Makefile lib/libspl/include/sys/Makefile lib/libspl/include/sys/sysevent/Makefile lib/libspl/include/sys/dktp/Makefile lib/libspl/include/util/Makefile lib/libavl/Makefile lib/libefi/Makefile lib/libnvpair/Makefile lib/libunicode/Makefile lib/libuutil/Makefile lib/libzpool/Makefile lib/libzfs/Makefile lib/libshare/Makefile cmd/Makefile cmd/zdb/Makefile cmd/zfs/Makefile cmd/zinject/Makefile cmd/zpool/Makefile cmd/ztest/Makefile cmd/zpios/Makefile cmd/mount_zfs/Makefile cmd/zpool_layout/Makefile cmd/zvol_id/Makefile cmd/zpool_id/Makefile cmd/vdev_id/Makefile module/Makefile module/avl/Makefile module/nvpair/Makefile module/unicode/Makefile module/zcommon/Makefile module/zfs/Makefile module/zpios/Makefile include/Makefile include/linux/Makefile include/sys/Makefile include/sys/fs/Makefile include/sys/fm/Makefile include/sys/fm/fs/Makefile scripts/Makefile scripts/zpios-profile/Makefile scripts/zpios-test/Makefile scripts/zpool-config/Makefile scripts/zpool-layout/Makefile scripts/common.sh zfs.spec zfs-modules.spec PKGBUILD-zfs PKGBUILD-zfs-modules zfs-script-config.sh zfs.release"
+ac_config_files="$ac_config_files Makefile dracut/Makefile dracut/90zfs/Makefile udev/Makefile udev/rules.d/Makefile etc/Makefile etc/init.d/Makefile etc/zfs/Makefile man/Makefile man/man5/Makefile man/man8/Makefile lib/Makefile lib/libspl/Makefile lib/libspl/asm-generic/Makefile lib/libspl/asm-i386/Makefile lib/libspl/asm-x86_64/Makefile lib/libspl/include/Makefile lib/libspl/include/ia32/Makefile lib/libspl/include/ia32/sys/Makefile lib/libspl/include/rpc/Makefile lib/libspl/include/sys/Makefile lib/libspl/include/sys/sysevent/Makefile lib/libspl/include/sys/dktp/Makefile lib/libspl/include/util/Makefile lib/libavl/Makefile lib/libefi/Makefile lib/libnvpair/Makefile lib/libunicode/Makefile lib/libuutil/Makefile lib/libzpool/Makefile lib/libzfs/Makefile lib/libshare/Makefile cmd/Makefile cmd/zdb/Makefile cmd/zfs/Makefile cmd/zinject/Makefile cmd/zpool/Makefile cmd/ztest/Makefile cmd/zpios/Makefile cmd/mount_zfs/Makefile cmd/zpool_layout/Makefile cmd/zvol_id/Makefile cmd/zpool_id/Makefile cmd/vdev_id/Makefile module/Makefile module/avl/Makefile module/nvpair/Makefile module/unicode/Makefile module/zcommon/Makefile module/zfs/Makefile module/zpios/Makefile include/Makefile include/linux/Makefile include/sys/Makefile include/sys/fs/Makefile include/sys/fm/Makefile include/sys/fm/fs/Makefile scripts/Makefile scripts/zpios-profile/Makefile scripts/zpios-test/Makefile scripts/zpool-config/Makefile scripts/zpool-layout/Makefile scripts/common.sh zfs.spec zfs-modules.spec PKGBUILD-zfs PKGBUILD-zfs-modules zfs-script-config.sh zfs.release dkms.conf"
 
 
 cat >confcache <<\_ACEOF
@@ -28337,6 +28353,7 @@ do
     "PKGBUILD-zfs-modules") CONFIG_FILES="$CONFIG_FILES PKGBUILD-zfs-modules" ;;
     "zfs-script-config.sh") CONFIG_FILES="$CONFIG_FILES zfs-script-config.sh" ;;
     "zfs.release") CONFIG_FILES="$CONFIG_FILES zfs.release" ;;
+    "dkms.conf") CONFIG_FILES="$CONFIG_FILES dkms.conf" ;;
 
   *) { { $as_echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
 $as_echo "$as_me: error: invalid argument: $ac_config_target" >&2;}

configure.ac

@@ -124,6 +124,7 @@ AC_CONFIG_FILES([
 	PKGBUILD-zfs-modules
 	zfs-script-config.sh
 	zfs.release
+	dkms.conf
 ])
 
 AC_OUTPUT

dkms.conf.in

@@ -0,0 +1,36 @@
+AUTOINSTALL="yes"
+PACKAGE_NAME="@PACKAGE@"
+PACKAGE_VERSION="@VERSION@"
+PRE_BUILD="configure
+  --prefix=/usr
+  --with-config=kernel
+  --with-linux=$(case `lsb_release -is` in
+                   (Debian) echo ${kernel_source_dir/%build/source} ;;
+                   (*)      echo ${kernel_source_dir} ;;
+                 esac)
+  --with-linux-obj=${kernel_source_dir}
+  --with-spl-timeout=180
+"
+POST_INSTALL="dkms.postinst -a ${arch} -k ${kernelver} -t ${dkms_tree}
+                            -n ${PACKAGE_NAME} -v ${PACKAGE_VERSION}
+"
+REMAKE_INITRD="no"
+MAKE[0]="make"
+BUILT_MODULE_NAME[0]="zavl"
+BUILT_MODULE_LOCATION[0]="module/avl/"
+DEST_MODULE_LOCATION[0]="/extra/avl/avl"
+BUILT_MODULE_NAME[1]="znvpair"
+BUILT_MODULE_LOCATION[1]="module/nvpair/"
+DEST_MODULE_LOCATION[1]="/extra/nvpair/znvpair"
+BUILT_MODULE_NAME[2]="zunicode"
+BUILT_MODULE_LOCATION[2]="module/unicode/"
+DEST_MODULE_LOCATION[2]="/extra/unicode/zunicode"
+BUILT_MODULE_NAME[3]="zcommon"
+BUILT_MODULE_LOCATION[3]="module/zcommon/"
+DEST_MODULE_LOCATION[3]="/extra/zcommon/zcommon"
+BUILT_MODULE_NAME[4]="zfs"
+BUILT_MODULE_LOCATION[4]="module/zfs/"
+DEST_MODULE_LOCATION[4]="/extra/zfs/zfs"
+BUILT_MODULE_NAME[5]="zpios"
+BUILT_MODULE_LOCATION[5]="module/zpios/"
+DEST_MODULE_LOCATION[5]="/extra/zpios/zpios"

dkms.postinst

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+PROG=$0
+
+while getopts "a:k:n:t:v:" opt; do
+	case $opt in
+		a) arch=$OPTARG    ;;
+		k) kver=$OPTARG    ;;
+		n) pkgname=$OPTARG ;;
+		t) tree=$OPTARG    ;;
+		v) pkgver=$OPTARG  ;;
+	esac
+done
+
+if [ -z "${arch}" -o -z "${kver}" -o -z "${pkgname}" -o \
+     -z "${tree}" -o -z "${pkgver}" ]; then
+	echo "Usage: $PROG -a <arch> -k <kver> -n <pkgname>" \
+	     "-t <tree> -v <pkgver>"
+	exit 1
+fi
+
+cp ${tree}/${pkgname}/${pkgver}/build/zfs_config.h          \
+   ${tree}/${pkgname}/${pkgver}/build/module/Module.symvers \
+   ${tree}/${pkgname}/${pkgver}/${kver}/${arch}/

zfs-modules.spec.in

@@ -44,6 +44,17 @@
  %endif
 %endif
 
+# Set using 'rpmbuild ... --with kernel-dkms ...', defaults to disabled.
+%if %{defined _with_kernel_dkms}
+ %define with_kernel_dkms 1
+%else
+ %if %{defined _without_kernel_dkms}
+  %define with_kernel_dkms 0
+ %else
+  %define with_kernel_dkms 0
+ %endif
+%endif
+
 # Set using 'rpmbuild ... --with debug ...', defaults to disabled.
 %if %{defined _with_debug}
  %define kdebug --enable-debug
@@ -96,12 +107,15 @@
 
  %define kpkg_kern       kernel-%{kverextra}
  %define kpkg_dbug       %{nil}
+ %define kpkg_dkms       dkms
 
  %define kdevpkg_kern    kernel-source
  %define kdevpkg_dbug    %{nil}
+ %define kdevpkg_dkms    dkms
 
  %define kverpkg_kern    %(echo %{kver_kern} | %{__sed} -e 's/-%{kverextra}//g')
  %define kverpkg_dbug    %{nil}
+ %define kverpkg_dkms    2.2.0.2
 
  # The kernel and rpm versions do not strictly match under SLES11
  # e.g. kernel version 2.6.27.19-5 != rpm version 2.6.27.19-5.1
@@ -143,10 +157,13 @@
 
  %define kpkg_kern       kernel
  %define kpkg_dbug       kernel-debug
+ %define kpkg_dkms       dkms
 
  %define kdevpkg_kern    kernel-devel
  %define kdevpkg_dbug    kernel-debug-devel
+ %define kdevpkg_dkms    dkms
 
+ %define kverpkg_dkms    2.2.0.2
  %if %{defined el6} || %{defined ch5}
   %define kverpkg_kern   %(echo %{kver_kern} | %{__sed} -e 's/.%{_target_cpu}//g')
   %define kverpkg_dbug   %(echo %{kver_dbug} | %{__sed} -e 's/.%{_target_cpu}//g' | %{__sed} -e 's/.debug//g')
@@ -194,10 +211,13 @@
 
  %define kpkg_kern       kernel
  %define kpkg_dbug       kernel-debug
+ %define kpkg_dkms       dkms
 
  %define kdevpkg_kern    kernel-devel
  %define kdevpkg_dbug    kernel-debug-devel
+ %define kdevpkg_dkms    dkms
 
+ %define kverpkg_dkms    2.2.0.2
  %define kverpkg_kern    %(echo %{kver_kern} | %{__sed} -e 's/.%{_target_cpu}//g')
  %define kverpkg_dbug    %(echo %{kver_dbug} | %{__sed} -e 's/.%{_target_cpu}//g' | %{__sed} -e 's/.debug//g')
 
@@ -231,6 +251,7 @@
 
  %define kverpkg_kern    %{kver_kern}
  %define kverpkg_dbug    %{nil}
+ %define kverpkg_dkms    %{nil}
 
  %if %{undefined kdir}
   %define kdir_kern      /lib/modules/%{kver_kern}/build
@@ -274,39 +295,50 @@
 %if %{undefined splver}
  %define spllnk_kern     %{_usrsrc}/spl-*/%{kver_kern}
  %define spllnk_dbug     %{_usrsrc}/spl-*/%{kver_dbug}
+ %define spllnk_dkms     %{_var}/lib/dkms/spl/*/build
 
  %define splver_kern     %((echo X; %{__cat} %{spllnk_kern}/spl.release
                             2>/dev/null) | tail -1)
  %define splver_dbug     %((echo X; %{__cat} %{spllnk_dbug}/spl.release
                             2>/dev/null) | tail -1)
+ %define splver_dkms     %((echo X; %{__cat} %{spllnk_dkms}/spl.release
+                            2>/dev/null) | tail -1)
 %else
  %define splver_kern     %{splver}
  %define splver_dbug     %{splver}
+ %define splver_dksm     %{splver}
 %endif
 
 %define splpkg_kern      spl-modules
 %define splpkg_dbug      spl-modules-debug
+%define splpkg_dkms      spl-modules-dkms
 
 %define spldevpkg_kern   spl-modules-devel
 %define spldevpkg_dbug   spl-modules-debug-devel
+%define spldevpkg_dkms   spl-modules-dkms
 
 %define splverpkg_kern   %{splver_kern}
 %define splverpkg_dbug   %{splver_dbug}
+%define splverpkg_dkms   %{splver_dkms}
 
 %if %{undefined spldir}
  %define spldir_kern     %{_usrsrc}/spl-%{splver_kern}/%{kver_kern}
  %define spldir_dbug     %{_usrsrc}/spl-%{splver_dbug}/%{kver_dbug}
+ %define spldir_dkms     %{_usrsrc}/spl-%{splver_dkms}
 %else
  %define spldir_kern     %{spldir}
  %define spldir_dbug     %{spldir}.debug
+ %define spldir_dkms     %{spldir}
 %endif
 
 %if %{undefined splobj}
  %define splobj_kern     %{spldir_kern}
  %define splobj_dbug     %{spldir_dbug}
+ %define splobj_dkms     %{spldir_dkms}
 %else
  %define splobj_kern     %{splobj}
  %define splobj_dbug     %{splobj}.debug
+ %define splobj_dkms     %{splobj}
 %endif
 
 
@@ -322,6 +354,7 @@
 
 %define rel_kern         @ZFS_META_RELEASE@
 %define rel_dbug         @ZFS_META_RELEASE@
+%define rel_dkms         @ZFS_META_RELEASE@
 
 %if %{defined kpkg_kern}
 %define req_kern         %{kpkg_kern}
@@ -329,12 +362,17 @@
 %if %{defined kpkg_dbug}
 %define req_dbug         %{kpkg_dbug}
 %endif
+%if %{defined kpkg_dkms}
+%define req_dkms         %{kpkg_dkms}
+%endif
 
 %define splreq_kern      %{splpkg_kern}
 %define splreq_dbug      %{splpkg_dbug}
+%define splreq_dkms      %{splpkg_dkms}
 
 %define spldevreq_kern   %{spldevpkg_kern}
 %define spldevreq_dbug   %{spldevpkg_dbug}
+%define spldevreq_dkms   %{spldevpkg_dkms}
 
 %else
 
@@ -342,6 +380,7 @@
 %define relext_dbug      %(echo %{kverpkg_dbug} | %{__sed} -e 's/-/_/g')
 %define rel_kern         @ZFS_META_RELEASE@_%{relext_kern}
 %define rel_dbug         @ZFS_META_RELEASE@_%{relext_dbug}
+%define rel_dkms         @ZFS_META_RELEASE@
 
 %if %{defined kpkg_kern}
 %define req_kern         %{kpkg_kern} %{koppkg} %{kverpkg_kern}
@@ -349,12 +388,17 @@
 %if %{defined kpkg_dbug}
 %define req_dbug         %{kpkg_dbug} %{koppkg} %{kverpkg_dbug}
 %endif
+%if %{defined kpkg_dkms}
+%define req_dkms         %{kpkg_dkms} >= %{kverpkg_dkms}
+%endif
 
 %define splreq_kern      %{splpkg_kern} = %{splverpkg_kern}_%{relext_kern}
 %define splreq_dbug      %{splpkg_dbug} = %{splverpkg_dbug}_%{relext_dbug}
+%define splreq_dkms      %{splpkg_dkms} = %{splverpkg_dkms}
 
 %define spldevreq_kern   %{spldevpkg_kern} = %{splverpkg_kern}_%{relext_kern}
 %define spldevreq_dbug   %{spldevpkg_dbug} = %{splverpkg_dbug}_%{relext_dbug}
+%define spldevreq_dkms   %{spldevpkg_dkms} = %{splverpkg_dkms}
 
 %endif
 
@@ -461,6 +505,34 @@ The %{name}-debug-devel package contains the debug kernel header files
 and Module.symvers symbols needed for building additional modules
 which use %{name}.
 
+%endif
+%if %{?with_kernel_dkms}
+
+%package dkms
+Summary:         ZFS File System (DKMS)
+Group:           Utilities/System
+Release:         %{rel_dkms}
+Provides:        %{name}
+BuildArch:       noarch
+%if %{defined req_dkms}
+Requires:        %{req_dkms}
+%endif
+%if %{defined kdevpkg_dkms}
+BuildRequires:   %{kdevpkg_dkms}
+%endif
+%if %{defined splreq_dkms}
+Requires:        %{splreq_dkms}
+%endif
+%if %{defined spldevpkg_dkms}
+BuildRequires:   %{spldevpkg_dkms}
+%endif
+Provides:        lustre-backend-fs
+
+%description dkms
+The %{name}-dkms package contains the necessary pieces to build and
+install the ZFS kernel modules with Dynamic Kernel Modules Support
+(DKMS).
+
 %endif
 
 %prep
@@ -485,6 +557,15 @@ make DESTDIR=$RPM_BUILD_ROOT install
 make
 make DESTDIR=$RPM_BUILD_ROOT install
 
+%endif
+%if %{?with_kernel_dkms}
+
+%configure %{kdebug} %{kdebug_dmu_tx}
+make dist
+mkdir -p $RPM_BUILD_ROOT/%{_prefix}/src
+tar -xf @PACKAGE@-%{version}.tar.gz -C $RPM_BUILD_ROOT/%{_prefix}/src
+cp -af dkms.conf $RPM_BUILD_ROOT/%{_prefix}/src/@PACKAGE@-%{version}
+
 %endif
 
 %clean
@@ -540,3 +621,30 @@ else
 fi
 
 %endif
+%if %{?with_kernel_dkms}
+
+%files dkms
+%defattr(-,root,root)
+%{_prefix}/src/@PACKAGE@-%{version}/*
+
+%post dkms
+for POSTINST in %{_prefix}/lib/dkms/common.postinst; do
+	if [ -f $POSTINST ]; then
+		$POSTINST @PACKAGE@ %{version}
+		exit $?
+	fi
+	echo "WARNING: $POSTINST does not exist."
+done
+echo -e "ERROR: DKMS version is too old and @PACKAGE@ was not"
+echo -e "built with legacy DKMS support."
+echo -e "You must either rebuild @PACKAGE@ with legacy postinst"
+echo -e "support or upgrade DKMS to a more current version."
+exit 1
+
+%preun dkms
+echo -e
+echo -e "Uninstall of @PACKAGE@ module (version %{version}) beginning:"
+dkms remove -m @PACKAGE@ -v %{version} --all --rpm_safe_upgrade
+exit 0
+
+%endif