%global commit                  7806cbf0b693ea3ac82cafe567b1a964bcd69924

%global gittag                  6.2.1.138

%global shortcommit             %(c=%{commit}; echo ${c:0:7})

%define spec_release            57

%define kmod_name		kvdo

%define kmod_driver_version	%{gittag}

%define kmod_rpm_release	%{spec_release}

%define kmod_kernel_version	4.18.0-144.el8

%define kmod_headers_version	%(rpm -qa kernel-devel | sed 's/^kernel-devel-//')

%define kmod_kbuild_dir		.

%define kmod_dependencies       %{nil}

%define kmod_build_dependencies	%{nil}

%define kmod_devel_package	0

Source0:	https://github.com/dm-vdo/%{kmod_name}/archive/%{commit}/%{kmod_name}-%{shortcommit}.tar.gz

%define findpat %( echo "%""P" )

Name:		kmod-kvdo

Version:	%{kmod_driver_version}

Release:	%{kmod_rpm_release}%{?dist}

Summary:	Kernel Modules for Virtual Data Optimizer

License:	GPLv2+

URL:		http://github.com/dm-vdo/kvdo

BuildRoot:	%(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)

BuildRequires:  elfutils-libelf-devel

BuildRequires:	glibc

BuildRequires:	kernel-devel >= %{kmod_kernel_version}

# Disable the kernel-debug requirement for now

%if 0

# kernel-debug appears to not be necessary at the moment. 

BuildRequires:  kernel-debug >= %{kmod_kernel_version}

%endif

BuildRequires:  libuuid-devel

BuildRequires:  redhat-rpm-config

ExcludeArch:    i686

ExcludeArch:    ppc

ExcludeArch:    ppc64

ExcludeArch:    s390

%global kernel_source() /usr/src/kernels/%{kmod_headers_version}

%global _use_internal_dependency_generator 0

Provides:	kernel-modules = %{kmod_kernel_version}.%{_target_cpu}

Provides:	kmod-%{kmod_name} = %{?epoch:%{epoch}:}%{version}-%{release}

Requires(post):	%{_sbindir}/weak-modules

Requires(postun):	%{_sbindir}/weak-modules

Requires:	kernel >= %{kmod_kernel_version}

%if "%{kmod_build_dependencies}" != ""

BuildRequires:  %{kmod_build_dependencies}

%endif

%if "%{kmod_dependencies}" != ""

Requires:       %{kmod_dependencies}

%endif

%description

Virtual Data Optimizer (VDO) is a device mapper target that delivers

block-level deduplication, compression, and thin provisioning.

This package provides the kernel modules for VDO.

%pre

# During the install, check whether kvdo or uds is loaded.  A warning here

# indicates that a previous install was not completely removed.  This message

# is purely informational to the user.

for module in kvdo uds; do

  if grep -q "^${module}" /proc/modules; then

    if [ "${module}" == "kvdo" ]; then

      echo "WARNING: Found ${module} module previously loaded (Version: $(cat /sys/kvdo/version 2>/dev/null || echo Unknown)).  A reboot is recommended before attempting to use the newly installed module."

    else

      echo "WARNING: Found ${module} module previously loaded.  A reboot is recommended before attempting to use the newly installed module."

    fi

  fi

done

%post

modules=( $(find /lib/modules/%{kmod_headers_version}/extra/kmod-%{kmod_name} | grep '\.ko$') )

printf '%s\n' "${modules[@]}" >> /var/lib/rpm-kmod-posttrans-weak-modules-add

%pretrans -p <lua>

posix.unlink("/var/lib/rpm-kmod-posttrans-weak-modules-add")

%posttrans

if [ -f "/var/lib/rpm-kmod-posttrans-weak-modules-add" ]; then

	modules=( $(cat /var/lib/rpm-kmod-posttrans-weak-modules-add) )

	rm -rf /var/lib/rpm-kmod-posttrans-weak-modules-add

	printf '%s\n' "${modules[@]}" | %{_sbindir}/weak-modules --dracut=/usr/bin/dracut --add-modules

fi

%preun

rpm -ql kmod-kvdo-%{kmod_driver_version}-%{kmod_rpm_release}%{?dist}.$(arch) | grep '\.ko$' > /var/run/rpm-kmod-%{kmod_name}-modules

# Check whether kvdo or uds is loaded, and if so attempt to remove it.  A

# failure to unload means there is still something using the module.  To make

# sure the user is aware, we print a warning with recommended instructions.

for module in kvdo uds; do

  if grep -q "^${module}" /proc/modules; then

    warnMessage="WARNING: ${module} in use.  Changes will take effect after a reboot."

    modprobe -r ${module} 2>/dev/null || echo ${warnMessage} && /usr/bin/true

  fi

done

%postun

modules=( $(cat /var/run/rpm-kmod-%{kmod_name}-modules) )

rm /var/run/rpm-kmod-%{kmod_name}-modules

printf '%s\n' "${modules[@]}" | %{_sbindir}/weak-modules --dracut=/usr/bin/dracut --remove-modules

%files

%defattr(644,root,root,755)

/lib/modules/%{kmod_headers_version}

/etc/depmod.d/%{kmod_name}.conf

/usr/share/doc/kmod-%{kmod_name}/greylist.txt

%prep

%setup -n %{kmod_name}-%{commit}

%{nil}

set -- *

mkdir source

mv "$@" source/

mkdir obj

%build

rm -rf obj

cp -r source obj

make -C %{kernel_source} M=$PWD/obj/%{kmod_kbuild_dir} V=1 \

	NOSTDINC_FLAGS="-I $PWD/obj/include -I $PWD/obj/include/uapi"

# mark modules executable so that strip-to-file can strip them

find obj/%{kmod_kbuild_dir} -name "*.ko" -type f -exec chmod u+x '{}' +

whitelist="/lib/modules/kabi-current/kabi_whitelist_%{_target_cpu}"

for modules in $( find obj/%{kmod_kbuild_dir} -name "*.ko" -type f -printf "%{findpat}\n" | sed 's|\.ko$||' | sort -u ) ; do

	# update depmod.conf

	module_weak_path=$(echo $modules | sed 's/[\/]*[^\/]*$//')

	if [ -z "$module_weak_path" ]; then

		module_weak_path=%{name}

	else

		module_weak_path=%{name}/$module_weak_path

	fi

	echo "override $(echo $modules | sed 's/.*\///') $(echo %{kmod_headers_version} | sed 's/\.[^\.]*$//').* weak-updates/$module_weak_path" >> source/depmod.conf

	# update greylist

	nm -u obj/%{kmod_kbuild_dir}/$modules.ko | sed 's/.*U //' |  sed 's/^\.//' | sort -u | while read -r symbol; do

		grep -q "^\s*$symbol\$" $whitelist || echo "$symbol" >> source/greylist

	done

done

sort -u source/greylist | uniq > source/greylist.txt

%install

export INSTALL_MOD_PATH=$RPM_BUILD_ROOT

export INSTALL_MOD_DIR=extra/%{name}

make -C %{kernel_source} modules_install V=1 \

	M=$PWD/obj/%{kmod_kbuild_dir}

# Cleanup unnecessary kernel-generated module dependency files.

find $INSTALL_MOD_PATH/lib/modules -iname 'modules.*' -exec rm {} \;

install -m 644 -D source/depmod.conf $RPM_BUILD_ROOT/etc/depmod.d/%{kmod_name}.conf

install -m 644 -D source/greylist.txt $RPM_BUILD_ROOT/usr/share/doc/kmod-%{kmod_name}/greylist.txt

%clean

rm -rf $RPM_BUILD_ROOT

%changelog

* Fri Sep 13 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.138-57

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Thu Aug 08 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.138-56

- Fixed a crash on allocation failure and a use-after-free race introduced by

  the changes to avoid issuing I/O while suspended.

- Resolves: rhbz#1659303

* Fri Aug 02 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.134-56

- Finished converting the VDO device to conform to the DM convention of not

  issuing I/O while suspended.

- Resolves: rhbz#1659303

- Fixed a bug where crash recovery could use the wrong threads for certain

  operations potentially resulting in memory corruption.

- Resolves: rhbz#1703621

- Fixed a bug which could cause segfaults when running the vdostatus

  command.

- Resolves: rhbz#1669960

- Eliminated a backtrace from the error logged when creating a VDO device

  with an erroneous physical size in the table line.

- Resolves: rhbz#1717435

- Fixed a possible use-after-free of the UDSConfiguration.

- Resolves: rhbz#1653802

- Made VDO a singleton device because multi-segment devices containing a

  VDO have a number of issues.

- Resolves: rhbz#1725077

- Converted the VDO device to conform to the DM convention of not issuing

  writes from the constructor.

- Resolves: rhbz#1669086

* Mon Jul 29 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.102-56

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Fri Jul 12 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.102-55

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Thu Jun 27 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.102-54

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Fri Jun 14 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.102-53

- Continued converting the VDO device to conform to the DM convention of

  not issuing I/O while suspended.

  - Resolves: rhbz#1659303

- Added more rate limiting of error logging in both the kvdo and uds

  modules in order to avoid soft-lockups on newer kernels.

  - Resolves: rhbz#1703243

- Eliminated the passing of addresses of unaligned fields in packed

  - Resolves: rhbz#1718058

* Tue May 21 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.48-53

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Tue May 21 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.48-52

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Sun May 05 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.1.48-51

- Modified the setting of the dm target version for VDO devices to only

  change when the dm interface (i.e. table line) changes instead of tying

  it to the VDO version.

  - Resolves: rhbz#1665298

- Improved error handling when resizing VDO devices.

  - Resolves: rhbz#1659247

- Reduced, removed, and/or rate limited error logging to avoid

  soft-lockups.

  - Resolves: rhbz#1678785

  - Resolves: rhbz#1698664

- Began converting the VDO device to conform to the DM convention of not

  issuing I/O while suspended.

  - Relates: rhbz#1659303

- Added a dmsetup message to close the UDS index of a running VDO device.

  - Relates: rhbz#1643291

* Fri May 03 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-51

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1695330

* Mon Feb 25 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-50

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Feb 15 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-49

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Feb 13 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-48

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Sat Feb 09 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-47

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Feb 08 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-46

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Feb 06 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-45

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Jan 16 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-44

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Mon Jan 14 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-43

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Jan 11 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-42

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Mon Jan 07 2019 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-41

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Dec 19 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-40

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Mon Dec 17 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-39

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Dec 14 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.293-38

- Improved dmsetup error reporting of invalid thread counts.

- rhbz#1645324

- Allowed VDO backing devices to specified by device number.

- Resolves: rhbz#1594285

- Eliminated memory allocations when suspended.

- Resolves: rhbz#1658348

- Improved error handling during suspend.

- Resolves: rhbz#1658348

* Wed Dec 12 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-38

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Mon Dec 10 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-37

- Bumped NVR for driver signing

- Relates: rhbz#1589873

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Thu Nov 29 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-36

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Nov 16 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.273-35

- Fixed more error path memory leaks in the uds and kvdo modules.

- Resolves: rhbz#1639854

- Removed the read cache.

- Resolves: rhbz#1639512

- Fixed a bug which prevented parsing of version 0 table lines.

- Resolves: rhbz#1643639

- In order to properly handle version 0 table lines, made no-op physical

  growth not an error.

- Resolves: rhbz#1643639

- Limited the number of logical zones to 60.

- Resolves: rhbz#1645324

- Converted to use the kernel's bio zeroing method instead of a VDO

  specific one.

- Resolves: rhbz#1647446

- Added a missing call to flush_cache_page() after writing pages which may

  be owned by the page cache or a user as required by the kernel.

- Resolves: rhbz#1647446

- Added a version 2 table line which uses DM-style optional parameters.

- Resolves: rhbz#1648469

- Fixed a bug in the statistics tracking partial I/Os.

- Resolves: rhbz#1648496

- Added a maximum discard size table line parameter and removed the

  corresponding sysfs parameter which applied to all VDO devices.

- Resolves: rhbz#1648469

* Wed Nov 07 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-35

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Oct 24 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-34

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Oct 24 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-33

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Oct 19 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-32

- Depend on more of the NVR for the kernel package.

- Resolves: rhbz#1640699

* Tue Oct 16 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-31

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Tue Oct 16 2018 - Tomas Kopecek <tkopecek@redhat.com> - 6.2.0.239-30

- Bumped NVR for driver signing

- Relates: rhbz#1589873

* Mon Oct 15 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-29

- Bumped NVR for driver signing

- Relates: rhbz#1589873

* Thu Oct 11 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-28

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Oct 10 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-27

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Sun Oct 07 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.239-26

- Fixed error path memory leaks in the uds and kvdo modules.

- Resolves: rhbz#1609403

- Modified the physical and logical growth procedures to be consistent with

  other device mapper targets.

- Resolves: rhbz#1631868

* Fri Sep 28 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-26

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Thu Sep 27 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-25

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Tue Sep 25 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-24

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Tue Sep 25 2018 - Joseph Chapman <jochapma@redhat.com> - 6.2.0.219-23

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Mon Sep 24 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-22

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Sep 21 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-21

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Thu Sep 20 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-20

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Sep 19 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-19

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Tue Sep 18 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-18

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Mon Sep 17 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.219-17

- Fixed error path memory leaks in the uds and kvdo modules.

- Resolves: rhbz#1609403

- Fixed conflict errors when installing RPMs via dnf.

- Resolves: rhbz#1601103

- Fixed a hang when recovering a VDO volume with a physical size larger

  than 16TB.

- Resolves: rhbz#1628316

- Fixed some potential initialization issues in the UDS module.

- Resolves: rhbz#1609403

- Fixed a use-after-free bug in a UDS error path.

- Resolves: rhbz#1609403

- Added missing va_end() calls.

- Resolves: rhbz#1627953

- Modified Makefile to take build flags from rpmbuild.

- Resolves: rhbz#1624184

* Fri Sep 14 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-16

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Thu Sep 13 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-15

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Sep 12 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-14

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Aug 29 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-13

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Wed Aug 29 2018 - Joseph Chapman <jochapma@redhat.com> - 6.2.0.197-12

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Tue Aug 28 2018 - Josh Boyer <jwboyer@redhat.com> - 6.2.0.197-11

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1623006

* Fri Aug 24 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-10

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1611663

* Mon Aug 20 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-9

- Patched a new compiler warning out

- Relates: rhbz#1611663

* Mon Aug 20 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-8

- Bumped NVR for new 4.18 kernel

- Relates: rhbz#1611663

* Mon Aug 13 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-7

- Bumped NVR for 4.18 rebase

- Resolves: rhbz#1534087

* Wed Aug  8 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.197-6

- Enabled the setting of max_discard_sectors for VDO devices via sysfs.

  This allows users stacking dm-thin devices on top of VDO to set a value which

  is large enough that dm-thin will send discards to VDO.

- Resolves: rhbz#1612349

* Sat Jul 28 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.187-6

- No longer attempt to unload modules in %preun

- Resolves: rhbz#1553420

- Fixed a bug in %preun that was attempting to call 'dnf'

- Resolves: rhbz#1598924

- Fixed weak-modules calls to use proper location for dracut

- Resolves: rhbz#1609178

- Fixed a potential deadlock in the UDS index by using the kernel supplied

  struct callback instead of our own implementation of synchronous

  callbacks.

- Eliminated obsolete code and fields from UDS.

- Converted the VDO module to use numeric.h from the UDS module instead of

  having its own version.

- Fixed a bug which would cause incorrect encoding of VDO data structures

  on disk.

- Removed or modified logging which prints pointers from the kernel since

  newer kernels obfuscate the pointer values for security reasons.

- Eliminated confusing and spurious error messages when rebuilding a UDS

  index.

- Improved memory allocation by not using the incorrect __GFP_NORETRY flag

  and by using the memalloc_noio_save mechanism.

- Finished conversion of the encoding and decoding of the VDO's on-disk

  structures to be platform independent.

- Converted VDO to use the atomic API from the UDS module instead of its

  own.

- Fixed memory leaks in UDS error paths.

- Fixed a potential stack overflow when reaping the recovery journal.

* Fri Jul 06 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.132-5

- Rebuilt to work with 4.18 kernel.

* Thu Jun 28 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.132-4

Note: This is a pre-release version, future versions of VDO may not support

VDO devices created with this version.

- Removed obsolete code.

- Continued conversion of the encoding and decoding of the VDO's on-disk

  structures to be platform independent.

- Adopted use of gcc's built-in byte order macros.

- Converted the VDO module to use the platform independent version of the

  Murmur3 hash from the UDS module.

- Improved counting of dedupe timeouts by including in the count queries

  which are not made due to their being a lack of resources from previous

  queries taking too long.

- Improved checking that VDO does not allocate memory from its own threads

  during normal operation.

- Fixed a bug which caused crashes with VDO on top of RAID-50.

- Fixed a bug which caused VDO to ignore most flush requests on kernels

  later than 4.10

- Resolves: rhbz#1594062

* Thu Jun 21 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.109-4

Note: This is a pre-release version, future versions of VDO may not support

VDO devices created with this version.

- Removed obsolete code.

- Made uses of memory barriers and atomics more portable across platforms.

- Converted the encoding and decoding of many of VDO's on-disk structures

  to be platform independent.

- Made the implementation of VDO's in-memory data structures platform

  independent.

- Fixed a logging bug which resulted in single log message being split

  across multiple log lines on newer kernels.

- Fixed a bug which would cause attempts to grow the physical size of a VDO

  device to fail if the device below the VDO was resized while the VDO was

  offline.

- Converted to use GCC's built-in macros for determining endianness.

- Converted some non-performance critical atomics to be spinlock protected

  in order to avoid dealing with memory barrier portability issues.

- Fixed a bug which could cause data loss when discarding unused portions

  of a VDO's logical space.

- Reduced memory usage (slightly) by rearranging structures to pack better

  in memory.

- Modified grow physical to fail in the prepare step if the size isn't

  changing, avoiding a suspend-and-resume cycle.

- Added support for building with a 4.18 kernel.

* Mon Jun 04 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.71-4

Note: This is a pre-release version, future versions of VDO may not support

VDO devices created with this version.

- Updated to compile on aarch64, ppc64le, and s390x processor architectures

  in addition to x86.

- Updated atomics, memory barriers, and other synchronization mechanisms to

  work on aarch64, ppc64le, and s390x processor architectures in addition

  to x86.

- Fixed thread safety issues in the UDS page cache.

- Removed obsolete code and interfaces from the UDS module.

- Added /sys/kvdo/version which contains the currently loaded version of

  the kvdo module.

- Updated the UDS module to consistently generate and encode on-disk data

  regardless of the processor architecture.

- Began Updating the VDO module to consistently encode on-disk data

  regardless of the processor architecture.

- Added logging of normal operation when a VDO device starts normally.

- Fixed a potential use-after-free race when shutting down a VDO device.

- Modified allocations made from VDO index threads to use the correct flags.

- Exported the MurmurHash3 implementation from the UDS module rather than

  having a seperate copy in the VDO module.

- Fixed handling of I/O errors in 4.13 and later kernels.

- Exported functions for handling endian conversions from the UDS module

  for use by the VDO module.

* Tue May 01 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.35-3

- Enabled aarch64 builds

* Fri Apr 27 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.35-2

Note: This is a pre-release version, future versions of VDO may not support

VDO devices created with this version.

- Added validation that the release version numbers in the geometry and

  super block match on load.

- Fixed compilation problems on newer versions of GCC.

* Tue Apr 24 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.32-2

Note: This is a pre-release version, future versions of VDO may not support

VDO devices created with this version.

- Merged the funnel queue implementations in the uds and kvdo modules.

- Improved deduplication of concurrent requests containing the same data.

- Enabled loading of VDO devices created with version 6.0 or 6.1.

- Moved atomic.h from the UDS module to the VDO module since the UDS module

  doesn't use it.

- Removed spurious error messages when first creating the index for a new

  VDO.

- Added validation that the release version numbers in the geometry block

  and VDO super block match.

- Fixed bug in UDS on architectures with page sizes larger than 4K.

- Reflected kernel change of SECTOR_SHIFT and SECTOR_SIZE from enums to

  macros.

- Continued to remove obsolete functionality from the UDS module.

- Continued to add support for architectures other than x86.

- Fixed a thread-safety issue in UDS module's chapter cache.

* Tue Apr 17 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.4-2

- Fixed path to _sbindir for weak-mldules

- Resolves: rhbz#1566144

* Fri Apr 13 2018 - Andy Walsh <awalsh@redhat.com> - 6.2.0.4-1

- Updated to use github for Source0

- Removed unused sections

- Initial RHEL8 RPM rhbz#1534087

* Fri Apr 13 2018 - J. corwin Coburn <corwin@redhat.com> - 6.2.0.4-1

- Initial pre-release for RHEL 8.

  - Please be aware that this version is not compatible with previous versions

    of VDO. Support for loading or upgrading devices created with VDO version

    6.1 will be available soon.

- Management tools will work with both python 2 and python 3.

- Dedupe path improvements.

- Beginnings of support for non-x86 architectures.

- Removed obsolete code from UDS.

* Tue Feb 27 2018 - Andy Walsh <awalsh@redhat.com> - 6.1.0.153-15

- Fixed preun handling of loaded modules

- Resolves: rhbz#1549178

* Fri Feb 16 2018 - Joseph Chapman <jochapma@redhat.com> - 6.1.0.149-13

- Sync mode is safe if underlying storage changes to requiring flushes

- Resolves: rhbz#1540777

* Wed Feb 07 2018 - Joseph Chapman <jochapma@redhat.com> - 6.1.0.146-13

- Module target is now "vdo" instead of "dedupe"

- Fixed a bug where crash recovery led to failed kernel page request

- Improved modification log messages

- Improved package description and summary fields

- Resolves: rhbz#1535127

- Resolves: rhbz#1535597

- Resolves: rhbz#1540696

- Resolves: rhbz#1541409

* Tue Feb 06 2018 - Andy Walsh <awalsh@redhat.com> - 6.1.0.144-13

- Updated summary and descriptions

- Resolves: rhbz#1541409

* Thu Feb 01 2018 - Joseph Chapman <jochapma@redhat.com> - 6.1.0.130-12

- Fix General Protection Fault unlocking UDS callback mutex

- Removing kmod-kvdo package unloads kernel module

- Fix URL to point to GitHub tree

- Resolves: rhbz#1510176

- Resolves: rhbz#1533260

- Resolves: rhbz#1539061

* Fri Jan 19 2018 - Joseph Chapman <jochapma@redhat.com> - 6.1.0.124-11

- Fixed provisional referencing for dedupe.

- Only log a bio submission from a VDO to itself.

- vdoformat cleans up metadata properly after fail.

- Resolves: rhbz#1511587

- Resolves: rhbz#1520972

- Resolves: rhbz#1532481

* Wed Jan 10 2018 - Joseph Chapman <jochapma@redhat.com> - 6.1.0.114-11

- /sys/uds permissions now resticted to superuser only

- Remove /sys/uds files that should not be used in production

- Removing kvdo module reports version

- VDO automatically chooses the proper write policy by default

- Fixed a Coverity-detected error path leak

- Resolves: rhbz#1525305

- Resolves: rhbz#1527734

- Resolves: rhbz#1527737

- Resolves: rhbz#1527924

- Resolves: rhbz#1528399

* Thu Dec 21 2017 - Joseph Chapman <jochapma@redhat.com> - 6.1.0.106-11

- Detect journal overflow after 160E of writes

- Clean up UDS threads when removing last VDO

- Resolves: rhbz#1512968

- Resolves: rhbz#1523240

* Tue Dec 12 2017 Joe Chapman <jochapma@redhat.com> 6.1.0.97-11

- Default logical size is no longer over-provisioned

- Remove debug logging when verifying dedupe advice

- Resolves: rhbz#1519330

* Fri Dec 08 2017 Joe Chapman <jochapma@redhat.com> 6.1.0.89-11

- improve metadata cleanup after vdoformat failure

- log REQ_FLUSH & REQ_FUA at level INFO

- improve performance of cuncurrent write requests with the same data

- Resolves: rhbz#1520972

- Resolves: rhbz#1521200

* Fri Dec 01 2017 Joe Chapman <jochapma@redhat.com> 6.1.0.72-10

- clear VDO metadata on a vdo remove call

- fix create of new dedupe indices

- add magic number to VDO geometry block

- do less logging when stopping a VDO

- add a UUID

- Resolves: rhbz#1512127

- Resolves: rhbz#1516081

- Resolves: rhbz#1511109

- Resolves: rhbz#1515183

* Fri Nov 17 2017 Joe Chapman <jochapma@redhat.com> 6.1.0.55-9

- fail loading an uncreated index more gracefully

- remove spurious/unnecessary files from the distribution

- fix kernel module version