Hello community,

here is the log from the commit of package drbd for openSUSE:Factory checked in 
at 2015-07-25 07:44:30
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Comparing /work/SRC/openSUSE:Factory/drbd (Old)
 and      /work/SRC/openSUSE:Factory/.drbd.new (New)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Package is "drbd"

Changes:
--------
--- /work/SRC/openSUSE:Factory/drbd/drbd.changes        2013-05-13 
17:03:56.000000000 +0200
+++ /work/SRC/openSUSE:Factory/.drbd.new/drbd.changes   2015-07-25 
07:44:32.000000000 +0200
@@ -1,0 +2,294 @@
+Mon Jul 20 07:52:36 UTC 2015 - [email protected]
+
+- Fate#317940. Speed up initial sync by supporting zero out
+  device.
+  Patch 0000-cover-letter-fate317940.patch
+  Patch 0001-drbd-Fix-the-wrong-logic-of-moving-history.patch
+  Patch 0002-drbd-Add-options-zap_devices-to-new-current-uuid.patch
+  Patch 0003-drbd-A-function-to-zero-out-drbd-backing-device.patch
+  Patch 0004-drbd-New-packet-P_ZERO_OUT.patch
+  Patch 0005-drbd-Functions-to-notify-peer-node-to-start.patch
+  Patch 0006-drbd-Wapper-for-zeroing-out-device-by-worker.patch
+  Patch 0007-drbd-Flags-for-background-drbd-device-work.patch
+  Patch 0008-drbd-Function-to-work-with-packet-P_ZERO_OUT.patch
+  Patch 0009-drbd-Receive-zero-out-command-from-peer-node.patch
+  Patch 0010-drbd-Handle-new-current-uuid-zap-devices.patch
+- Delete useless patch init-script-fixes.diff
+- ExcludeArch i586 and s390, since user space split into
+  drbd-utils.
+
+-------------------------------------------------------------------
+Fri Apr 17 06:34:51 UTC 2015 - [email protected]
+
+- Update to 8.4.6 
+- With DRBD module version 8.4.5, we split out the management tools
+  into their own repository. Started out as "drbd-utils version
+  8.9.0". To manage DRBD 8.4.5 kernel modules and above, want
+  drbd-utils >= 8.9.0
+- fix failing of user space helpers since kernel 3.13. This bug is
+  known as 'out of mem, failed to invoke fence-peer helper'
+- fix connection timeouts for resources with multiple volumes
+- fix an issue with DRBD on linux software raid by properly
+  remapping bi_bdev
+- fix a (hard to trigger) race condition between promoting to primary
+  an connection handshake. In case the bug was hit the Primary got
+  stuck in WFBitmapS connection state
+- Fix a NULL deref when resuming IO on a diskless primary
+- Fix compile issues with uncommon architectures
+- improvements to asender performance. With high end backing storage
+  and networking equipment you may see IOPS improvements between 
+  25% to 50%.
+- Highest number on a single drbd seen by LINBIT so far: 160000 IOPS
+- backport of events2 and status commands from drbd9. This allows 
+  to be DRBD9 compatible starting with this release, and to get used
+  to DRBD9 compatible status reporting
+- support for lsblk in drbd
+
+- Update to 8.4.5
+- fix potential BUG_ON in mempool_alloc for older kernels (<2.6.23)
+- fix cornercase of resync finished detection
+- fix drbd_ldev_destroy to run exactly once and in worker context
+- fix spurious detach/disconnect: don't announce WRITE_SAME
+- fix NULL pointer deref in blk_add_request_payload
+- (DISCARD/TRIM handling in sd)
+- fix regression: potential NULL pointer dereference
+- fix regression: potential list corruption
+- fix regression: potential deadlock in adm functions (drbdsetup)
+- fix regression: /sbin vs /usr/sbin in scripts
+- fix race stopping the worker thread
+- new debugfs presence expose oldest requests and other details
+- userspace moved to own repository
+- linux 3.13 and 3.14 compatibility
+- improve adaptive resync controler
+- reduce bitmap IO during resync
+- allow write-ordering policy to be bumped up again
+- trigger tcp_flush_pending_frames() for PING/PING_ACK
+- fix potential segfault in drbdadm adjust
+- drbdsetup improvements: fix netlink socket buffers; detect
+  modprobe failure
+
+-------------------------------------------------------------------
+Fri May 30 04:29:22 UTC 2014 - [email protected]
+
+- modify drbd.rules by removing NAME and adding SYMLINK in case that 
+  configuration has a device name diffrent from kernel node (bnc#878119)
+  add: fix-udev-for-drbd-start-timeout.patch
+
+-------------------------------------------------------------------
+Tue May 20 09:13:32 UTC 2014 - [email protected]
+
+- Packages drbd-xen, drbd-utils, drbd-bash-completion, and
+  drbd-pacemaker were merged into drbd (bnc#878793)
+
+-------------------------------------------------------------------
+Sun Apr 13 20:10:00 UTC 2014 - [email protected]
+
+- Add # needssslcertforbuild to use the project's certificate when
+  building in a home project.
+
+-------------------------------------------------------------------
+Mon Mar 31 21:44:23 UTC 2014 - [email protected]
+
+- Add Module.supported and preamble (bnc#871132)
+
+-------------------------------------------------------------------
+Thu Mar 27 07:40:07 UTC 2014 - [email protected]
+
+- Update to 8.4.4.7   
+- fix potential BUG_ON in mempool_alloc for older kernels (<2.6.23)
+- fix cornercase of resync finished detection
+- fix drbd_ldev_destroy to run exactly once and in worker context
+- fix spurious detach/disconnect: don't announce WRITE_SAME
+- fix NULL pointer deref in blk_add_request_payload
+   (DISCARD/TRIM handling in sd)
+- fix regression: potential NULL pointer dereference
+- fix regression: potential list corruption
+- fix regression: potential deadlock in adm functions (drbdsetup)
+- fix regression: /sbin vs /usr/sbin in scripts
+- fix race stopping the worker thread
+- linux 3.13 compatibility
+- improve adaptive resync controler
+- reduce bitmap IO during resync
+- allow write-ordering policy to be bumped up again
+- trigger tcp_flush_pending_frames() for PING/PING_ACK
+- new sysfs oldest_requests attribute (may be moved to debugfs)
+- fix potential segfault in drbdadm adjust
+- drbdsetup improvements: fix socket buffers; detect modprobe failure
+- Upstream version cs: 3c1f46cb19993f98b22fdf7e18958c21ad75176d
+
+-------------------------------------------------------------------
+Thu Mar 13 06:40:32 UTC 2014 - [email protected]
+
+- Handle drbd devices when presented as phy devices by xenstore with
+  libxl (bnc#865682)
+  + add_phy_to_block-drbd.diff 
+
+-------------------------------------------------------------------
+Wed Jan 29 13:21:11 CET 2014 - [email protected]
+
+- disable build_kmp on i586 and s390, SLE-12 does not build a
+  runnable kernel there 
+
+-------------------------------------------------------------------
+Mon Oct 14 09:56:15 UTC 2013 - [email protected]
+
+-------------------------------------------------------------------
+Mon Oct 14 09:27:25 UTC 2013 - [email protected]
+
+- Update to official 8.4.4
+- drbd: evaluate disk and network timeout on different requests
+- drbd: Fix a hole in the challange-response connection authentication
+- drbd: always implicitly close last epoch when idle
+- drbd: add back some fairness to AL transactions
+- drbd: keep max-bio size during detach/attach on disconnected primary
+- drbd: fix a race between start_resync and send_and_submit
+- drbd: fix deadlock in discard fallback code
+- Build drbd KMPs.
+
+-------------------------------------------------------------------
+Thu Oct 10 14:04:56 UTC 2013 - [email protected]
+
+- Update to 8.4.4rc2
+- fix potential deadlock when concurrently fencing and establishing a
+  connection
+- fix potential distributed deadlock during verify or resync
+- fix decoding of bitmap vli rle for device sizes > 64 TB
+- fix for deadlock when using automatic split-brain-recovery
+- only fail empty flushes if no good data is reachable
+- avoid to shrink max_bio_size due to peer re-configuration
+- fix resume-io after reconnect with broken fence-peer handler
+- crm-fence-peer: less cib polling, peer-alive detection using crmadmin,
+  and other improvements
+- OCF RA: avoid too tight pacemaker driven recovery loop on failed
+  promote, implement adjust_master_score parameter
+- fix too large bursts for very slow resync rates
+- don't let application IO throttle resync to a stall
+- Fixed attaching to disks with fixed size external meta-data (This
+  regressions was introduced with 8.4.3)
+- Fixed a crash when the connection broke at a very exact point in time
+  while a graceful disconnect executes
+- Support for REQ_DISCARD
+- Allow parallel promote/demote
+- Allow online changing of al-stripes and al-stripe-size with the resize
+  command
+- drbdadm adjust now deals with IP-address changes correctly
+- Align the internal object model with drbd-9.0 (away from drbd-8.3)
+- New drbd-proxy option "bwlimit"; allow proxy options on host level
+- Compiles on Linux v3.10
+
+-------------------------------------------------------------------
+Wed Sep 18 09:56:22 UTC 2013 - [email protected]
+
+- Update drbd version string in specfile so that a future 8.4.4 check-in
+  will be considered newer than 8.4.4rc1.
+- Clean-up specfile based on spec-cleaner
+
+-------------------------------------------------------------------
+Mon Sep 16 11:22:46 UTC 2013 - [email protected]
+
+- Update to drbd 8.4.4rc1
+- Disable heartbeat support (heartbeat no longer ships on openSUSE)
+- fix decoding of bitmap vli rle for device sizes > 64 TB
+- fix for deadlock when using automatic split-brain-recovery
+- only fail empty flushes if no good data is reachable
+- avoid to shrink max_bio_size due to peer re-configuration
+- fix resume-io after reconnect with broken fence-peer handler
+- fencing script improvements
+- Fixed attaching to disks with fixed size external meta-data (This
++++ 97 more lines (skipped)
++++ between /work/SRC/openSUSE:Factory/drbd/drbd.changes
++++ and /work/SRC/openSUSE:Factory/.drbd.new/drbd.changes

Old:
----
  drbd-8.3.11.tar.bz2
  init-script-fixes.diff

New:
----
  0000-cover-letter-fate317940.patch
  0001-drbd-Fix-the-wrong-logic-of-moving-history.patch
  0002-drbd-Add-options-zap_devices-to-new-current-uuid.patch
  0003-drbd-A-function-to-zero-out-drbd-backing-device.patch
  0004-drbd-New-packet-P_ZERO_OUT.patch
  0005-drbd-Functions-to-notify-peer-node-to-start.patch
  0006-drbd-Wapper-for-zeroing-out-device-by-worker.patch
  0007-drbd-Flags-for-background-drbd-device-work.patch
  0008-drbd-Function-to-work-with-packet-P_ZERO_OUT.patch
  0009-drbd-Receive-zero-out-command-from-peer-node.patch
  0010-drbd-Handle-new-current-uuid-zap-devices.patch
  Module.supported
  drbd-8.4.6.tar.gz
  preamble

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Other differences:
------------------
++++++ drbd.spec ++++++
--- /var/tmp/diff_new_pack.3poRcL/_old  2015-07-25 07:44:33.000000000 +0200
+++ /var/tmp/diff_new_pack.3poRcL/_new  2015-07-25 07:44:33.000000000 +0200
@@ -1,7 +1,7 @@
 #
 # spec file for package drbd
 #
-# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2015 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,114 +16,100 @@
 #
 
 
+# needssslcertforbuild
+
+%ifarch x86_64
+%define buildrt 0
+%endif
 Name:           drbd
-BuildRequires:  bison
-BuildRequires:  flex
-BuildRequires:  udev
-Summary:        Distributed Replicated Block Device
+Version:        8.4.6
+Release:        0
+#Name:           drbd-kernel
+Summary:        Kernel driver for DRBD
 License:        GPL-2.0+
 Group:          Productivity/Clustering/HA
-Version:        8.3.11
-Release:        0
-Source:         %{name}-%{version}.tar.bz2
-Patch1:         init-script-fixes.diff
-Provides:       drbd-control
-Provides:       drbdsetup
 Url:            http://www.drbd.org/
+Source:         http://oss.linbit.com/drbd/8.4/%{name}-%{version}.tar.gz
+Source1:        preamble
+# In kernel is: kernel/drivers/block/drbd/drbd.ko
+Source2:        Module.supported
+
+# Patch set (0-10) for fate: https://fate.suse.com/317940
+# Already merged into linbit upstream and waiting for next release
+Patch0:         0000-cover-letter-fate317940.patch
+Patch1:         0001-drbd-Fix-the-wrong-logic-of-moving-history.patch
+Patch2:         0002-drbd-Add-options-zap_devices-to-new-current-uuid.patch
+Patch3:         0003-drbd-A-function-to-zero-out-drbd-backing-device.patch
+Patch4:         0004-drbd-New-packet-P_ZERO_OUT.patch
+Patch5:         0005-drbd-Functions-to-notify-peer-node-to-start.patch
+Patch6:         0006-drbd-Wapper-for-zeroing-out-device-by-worker.patch
+Patch7:         0007-drbd-Flags-for-background-drbd-device-work.patch
+Patch8:         0008-drbd-Function-to-work-with-packet-P_ZERO_OUT.patch
+Patch9:         0009-drbd-Receive-zero-out-command-from-peer-node.patch
+Patch10:        0010-drbd-Handle-new-current-uuid-zap-devices.patch
+
+BuildRequires:  kernel-source
+BuildRequires:  kernel-syms
+BuildRequires:  module-init-tools
+%if 0%{?buildrt} == 1
+BuildRequires:  kernel-syms-rt
+%endif
+Requires:       drbd-utils >= 8.9.0
+Supplements:    drbd-utils >= 8.9.0
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-Requires(post): %insserv_prereq %fillup_prereq
-Requires(preun): %insserv_prereq %fillup_prereq
-Requires(postun): %insserv_prereq fileutils
+ExcludeArch:    i586 s390
+
+%kernel_module_package -n drbd -p %_sourcedir/preamble
 
 %description
-Drbd is a distributed replicated block device. It mirrors a block
-device over the network to another machine. Think of it as networked
-raid 1. It is a building block for setting up clusters.
+This module is the kernel-dependent driver for DRBD.  This is split out so
+that multiple kernel driver versions can be installed, one for each
+installed kernel.
 
 %prep
-%setup
-%patch1
+%setup -q -n drbd-%{version}
+%patch1 -p1
+%patch2 -p1
+%patch3 -p1
+%patch4 -p1
+%patch5 -p1
+%patch6 -p1
+%patch7 -p1
+%patch8 -p1
+%patch9 -p1
+%patch10 -p1
 
 %build
-PATH=/sbin:$PATH %configure \
-    --without-km \
-    --with-utils \
-    --with-udev \
-    --with-distro=suse \
-    --with-heartbeat \
-    --with-pacemaker \
-    --with-xen \
-    --with-bashcompletion
-
-make OPTFLAGS="$RPM_OPT_FLAGS" %{?_smp_mflags}
+rm -rf obj
+mkdir obj
+ln -s ../scripts obj/
+
+for flavor in %{flavors_to_build}; do
+    cp -r drbd obj/$flavor
+    cp %_sourcedir/Module.supported obj/$flavor
+    #make -C %{kernel_source $flavor} modules M=$PWD/obj/$flavor
+    make -C obj/$flavor %{_smp_mflags} all KDIR=%{kernel_source $flavor}
+done
 
 %install
-%makeinstall
-ln -sf ../etc/init.d/drbd $RPM_BUILD_ROOT/sbin/rcdrbd
-mkdir -p $RPM_BUILD_ROOT/var/lib/drbd
-#
-# and I only want to install a hint to the example conf
-#
-cat <<___ > $RPM_BUILD_ROOT/etc/drbd.conf
-#
-# please have a a look at the example configuration file in
-# %{_docdir}/drbd/drbd.conf
-#
-___
-#
-%ifnarch %ix86 x86_64
-rm -rf $RPM_BUILD_ROOT/etc/xen
-%endif
+export INSTALL_MOD_PATH=%{buildroot}
+export INSTALL_MOD_DIR=updates
 
-%post
-%{fillup_and_insserv}
+for flavor in %{flavors_to_build} ; do
+    make -C %{kernel_source $flavor} modules_install M=$PWD/obj/$flavor
+    #From upstream file: drbd-kernel.spec
+    #kernelrelease=$(cat %{kernel_source 
$flavor}/include/config/kernel.release || make -s -C %{kernel_source $flavor} 
kernelrelease)
+    #mv obj/$flavor/.kernel.config.gz obj/k-config-$kernelrelease.gz
+done
 
-%preun
-%{stop_on_removal}
+rm -f drbd.conf
 
-%postun
-%{insserv_cleanup}
+%clean
+rm -rf %{buildroot}
 
-%files -n drbd
-%defattr(-, root, root)
-%config(noreplace) /etc/drbd.conf
-/etc/bash_completion.d/drbdadm.sh
-%config /etc/drbd.d/global_common.conf
-%doc %{_mandir}/man5/drbd.conf.5*
-%doc %{_mandir}/man8/drbd.8*
-%doc %{_mandir}/man8/drbdsetup.8*
-%doc %{_mandir}/man8/drbdadm.8*
-%doc %{_mandir}/man8/drbddisk.8*
-%doc %{_mandir}/man8/drbdmeta.8*
+%files
+%defattr(-,root,root)
 %doc COPYING
-%doc README
 %doc ChangeLog
-%doc scripts/drbd.conf
-%dir /etc/drbd.d
-/sbin/drbdadm
-/sbin/drbdsetup
-/sbin/rcdrbd
-/sbin/drbdmeta
-/usr/sbin/drbd-overview
-%ifarch %ix86 x86_64
-%dir %attr(700,root,root) /etc/xen
-%dir /etc/xen/scripts
-/etc/xen/scripts/block-drbd
-%endif
-/usr/lib/ocf/resource.d/linbit/drbd
-/etc/ha.d/resource.d/drbddisk
-/etc/ha.d/resource.d/drbdupper
-%dir /etc/udev
-%dir /etc/udev/rules.d
-/etc/udev/rules.d/65-drbd.rules
-%config /etc/init.d/drbd
-%defattr(-, root, root)
-/var/lib/drbd
-/usr/lib/drbd
-%dir /usr/lib/ocf
-%dir /usr/lib/ocf/resource.d
-%dir /usr/lib/ocf/resource.d/linbit
-%dir /etc/ha.d
-%dir /etc/ha.d/resource.d
 
 %changelog

++++++ 0000-cover-letter-fate317940.patch ++++++
>From 5874ec7ba93074fdc3c2e878080a4b08d3408bbf Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Mon, 13 Jul 2015 10:46:29 +0800
Subject: [Patch v2 00/10] Zero out devices instead of initial full sync

Patch set is based on drbd-8.4 859e34a9, have
already compiled/tested against SLES12.

If this feature can be merged into upstream, please
ignore v1, since v1 may caused pingACK timeout when
zeroing out large device.

Compare to v1, changes are as follow:
 1. Using drbd_device_post_work to zero out device as background
    task, so that it won't block pingACK when zeroing out
    large device.

 2. Fix bug of won't update peer node status if it finished
    zeroing out earier.

 3. Change some functions from file drbd_receive.c to
    drbd_worker.c and reorder the patch set.


Full sync for drbd initial usually take a long time, especically
when network become the bottleneck of the syncing. Simply skip
the full sync with "--clear-bitmap" may not the perfect solution
for all the cases, like using the bare device(no filesystem) to
work,etc database,vm... This patche set can be used to zero out
devices locally instead of a full sync to make the consistent
block device. This approach can be useful when lack of network
bandwidth to sync.

The patches add one new option "--zap-devices" to "new-current-uuid"
to zero out devices. It will start zeroing out devices of both
side.

Nick Wang (10):
  drbd: Fix the wrong logic of move history.
  drbd: Add options zap_devices to new-current-uuid
  drbd: Add a function to zero out drbd backing device.
  drbd: New packet P_ZERO_OUT.
  drbd: Functions to notify peer node to start
        zeroing out and zero out finished.
  drbd: Wapper for zeroing out device by worker.
  drbd: Add flag for drbd device work.
  drbd: Function to work with packet P_ZERO_OUT.
  drbd: Receive zero out command from peer node.
  drbd: Handle new-current-uuid --zap-devices.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]

 drbd/drbd_int.h        | 13 ++++++++
 drbd/drbd_main.c       | 51 ++++++++++++++++++++++++++--
 drbd/drbd_nl.c         | 21 +++++++++++-
 drbd/drbd_protocol.h   |  1 +
 drbd/drbd_receiver.c   | 69 ++++++++++++++++++++++++++++++++++++++
 drbd/drbd_worker.c     | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++
 drbd/linux/drbd_genl.h |  1 +
 7 files changed, 243 insertions(+), 3 deletions(-)

-- 
1.8.4.5

++++++ 0001-drbd-Fix-the-wrong-logic-of-moving-history.patch ++++++
>From 4d75389962585d5a543cadb2742cb4dfe22dc807 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 17:20:04 +0800
Subject: [Patch v2 01/10] drbd: Fix the wrong logic of moving history

Logic of moving history is wrong. May overlap
history when more than two history.
If won't extent more that two history. The loop
can be delete.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drbd/drbd_main.c b/drbd/drbd_main.c
index 9871894..a3dc39e 100644
--- a/drbd/drbd_main.c
+++ b/drbd/drbd_main.c
@@ -3466,8 +3466,8 @@ void drbd_uuid_move_history(struct drbd_device *device) 
__must_hold(local)
 {
        int i;
 
-       for (i = UI_HISTORY_START; i < UI_HISTORY_END; i++)
-               device->ldev->md.uuid[i+1] = device->ldev->md.uuid[i];
+       for (i = UI_HISTORY_END; i > UI_HISTORY_START; i--)
+               device->ldev->md.uuid[i] = device->ldev->md.uuid[i-1];
 }
 
 void __drbd_uuid_set(struct drbd_device *device, int idx, u64 val) 
__must_hold(local)
-- 
1.8.4.5

++++++ 0002-drbd-Add-options-zap_devices-to-new-current-uuid.patch ++++++
>From 84ae2314faeff2a9e06a66bc9a79520eadcbf305 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 17:28:18 +0800
Subject: [Patch v2 02/10] drbd: Add option zap_devices to new-current-uuid

Using zeroing out device instead of initial
full sync of device. Can be useful in high
latency network environment.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_nl.c         | 9 +++++++++
 drbd/linux/drbd_genl.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drbd/drbd_nl.c b/drbd/drbd_nl.c
index 691b615..1d17663 100644
--- a/drbd/drbd_nl.c
+++ b/drbd/drbd_nl.c
@@ -4017,6 +4017,7 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct 
genl_info *info)
        struct drbd_device *device;
        enum drbd_ret_code retcode;
        int skip_initial_sync = 0;
+       int zero_out_devices = 0;
        int err;
        struct new_c_uuid_parms args;
 
@@ -4051,6 +4052,14 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct 
genl_info *info)
            device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED && 
args.clear_bm) {
                drbd_info(device, "Preparing to skip initial sync\n");
                skip_initial_sync = 1;
+       /* this is "zero out" devices to make it all zero.
+       * ignore "zero out" if both "clear_bm" and "zap_devices" set. */
+       } else if (device->state.conn == C_CONNECTED &&
+           first_peer_device(device)->connection->agreed_pro_version >= 90 &&
+           device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED &&
+               args.zap_devices) {
+               drbd_info(device, "Preparing to zero out devices, will take a 
long time\n");
+               zero_out_devices = 1;
        } else if (device->state.conn != C_STANDALONE) {
                retcode = ERR_CONNECTED;
                goto out_dec;
diff --git a/drbd/linux/drbd_genl.h b/drbd/linux/drbd_genl.h
index 5db53f5..eef8d8c 100644
--- a/drbd/linux/drbd_genl.h
+++ b/drbd/linux/drbd_genl.h
@@ -240,6 +240,7 @@ GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms,
 
 GENL_struct(DRBD_NLA_NEW_C_UUID_PARMS, 10, new_c_uuid_parms,
        __flg_field(1, DRBD_GENLA_F_MANDATORY, clear_bm)
+       __flg_field(2, DRBD_GENLA_F_MANDATORY, zap_devices)
 )
 
 GENL_struct(DRBD_NLA_TIMEOUT_PARMS, 11, timeout_parms,
-- 
1.8.4.5

++++++ 0003-drbd-A-function-to-zero-out-drbd-backing-device.patch ++++++
>From 94d1f879305b472aff6009ba4c4f08b9d70f1cf1 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 17:34:46 +0800
Subject: [Patch v2 03/10] drbd: A function to zero out drbd backing device

The function can be used to zero out the whole
backing device.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_int.h    |  1 +
 drbd/drbd_worker.c | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h
index a234228..9ecf971 100644
--- a/drbd/drbd_int.h
+++ b/drbd/drbd_int.h
@@ -1662,6 +1662,7 @@ extern void drbd_send_acks_wf(struct work_struct *ws);
 extern bool drbd_rs_c_min_rate_throttle(struct drbd_device *device);
 extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t 
sector,
                bool throttle_if_app_is_waiting);
+extern int zero_out_local_device(struct drbd_device *device);
 extern int drbd_submit_peer_request(struct drbd_device *,
                                    struct drbd_peer_request *, const unsigned,
                                    const int);
diff --git a/drbd/drbd_worker.c b/drbd/drbd_worker.c
index 2a15aeb..50564f5 100644
--- a/drbd/drbd_worker.c
+++ b/drbd/drbd_worker.c
@@ -1653,6 +1653,27 @@ void drbd_rs_controller_reset(struct drbd_device *device)
        rcu_read_unlock();
 }
 
+/**
+ * zero_out_local_device()
+ * @device: DRBD device.
+ *
+ * Description:
+ * Zero out drbd backing device when creating new uuid.
+ *
+**/
+int zero_out_local_device(struct drbd_device *device)
+{
+       struct block_device *bdev;
+
+       bdev = device->ldev->backing_bdev;
+       if (device->ldev->known_size != drbd_get_capacity(bdev))
+               device->ldev->known_size = drbd_get_capacity(bdev);
+
+       /* zero out the backing device */
+       return blkdev_issue_zeroout(bdev, 0,
+               device->ldev->known_size, GFP_NOIO, false);
+}
+
 void start_resync_timer_fn(unsigned long data)
 {
        struct drbd_device *device = (struct drbd_device *) data;
-- 
1.8.4.5

++++++ 0004-drbd-New-packet-P_ZERO_OUT.patch ++++++
>From c6085cdb8f55facfae4468548f258117e63134d4 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 17:59:12 +0800
Subject: [Patch v2 04/10] drbd: New packet P_ZERO_OUT

Using packet P_ZERO_OUT to get peer node's result
of zeroing out.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_int.h      |  5 +++++
 drbd/drbd_main.c     | 28 ++++++++++++++++++++++++++++
 drbd/drbd_protocol.h |  1 +
 3 files changed, 34 insertions(+)

diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h
index 9ecf971..014b65e 100644
--- a/drbd/drbd_int.h
+++ b/drbd/drbd_int.h
@@ -622,6 +622,9 @@ enum {
        RS_START,               /* tell worker to start resync/OV */
        RS_PROGRESS,            /* tell worker that resync made significant 
progress */
        RS_DONE,                /* tell worker that resync is done */
+       /* used for zero out device */
+       ZERO_DONE,              /* succeed on zero out a device */
+       ZERO_FAIL,              /* fail to zero out a device */
 };
 
 struct drbd_bitmap; /* opaque for drbd_device */
@@ -1205,6 +1208,8 @@ extern int __drbd_send_protocol(struct drbd_connection 
*connection, enum drbd_pa
 extern int drbd_send_protocol(struct drbd_connection *connection);
 extern int drbd_send_uuids(struct drbd_peer_device *);
 extern int drbd_send_uuids_skip_initial_sync(struct drbd_peer_device *);
+extern int drbd_send_zero_out_ok(struct drbd_peer_device *);
+extern int drbd_send_zero_out_fail(struct drbd_peer_device *);
 extern void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *);
 extern int drbd_send_sizes(struct drbd_peer_device *peer_device, int 
trigger_reply, enum dds_flags flags);
 extern int drbd_send_state(struct drbd_peer_device *, union drbd_state);
diff --git a/drbd/drbd_main.c b/drbd/drbd_main.c
index a3dc39e..740015e 100644
--- a/drbd/drbd_main.c
+++ b/drbd/drbd_main.c
@@ -908,6 +908,34 @@ int drbd_send_uuids_skip_initial_sync(struct 
drbd_peer_device *peer_device)
        return _drbd_send_uuids(peer_device, 8);
 }
 
+/**
+ * _drbd_send_zero_out_state() - Sends the drbd state to the peer
+ * @peer_device:       DRBD peer device.
+ * @state:     Device zero out status.
+ */
+static int _drbd_send_zero_out_state(struct drbd_peer_device *peer_device, 
unsigned int status)
+{
+       struct drbd_socket *sock;
+       struct p_state *p;
+
+       sock = &peer_device->connection->data;
+       p = drbd_prepare_command(peer_device, sock);
+       if (!p)
+               return -EIO;
+       p->state = cpu_to_be32(status);
+       return drbd_send_command(peer_device, sock, P_ZERO_OUT, sizeof(*p), 
NULL, 0);
+}
+
+int drbd_send_zero_out_ok(struct drbd_peer_device *peer_device)
+{
+       return _drbd_send_zero_out_state(peer_device, 0);
+}
+
+int drbd_send_zero_out_fail(struct drbd_peer_device *peer_device)
+{
+       return _drbd_send_zero_out_state(peer_device, 1);
+}
+
 void drbd_print_uuids(struct drbd_device *device, const char *text)
 {
        if (get_ldev_if_state(device, D_NEGOTIATING)) {
diff --git a/drbd/drbd_protocol.h b/drbd/drbd_protocol.h
index 405b181..3a82442 100644
--- a/drbd/drbd_protocol.h
+++ b/drbd/drbd_protocol.h
@@ -59,6 +59,7 @@ enum drbd_packet {
        /* REQ_DISCARD. We used "discard" in different contexts before,
         * which is why I chose TRIM here, to disambiguate. */
        P_TRIM                = 0x31,
+       P_ZERO_OUT            = 0x32,
 
        P_MAY_IGNORE          = 0x100, /* Flag to test if (cmd > P_MAY_IGNORE) 
... */
        P_MAX_OPT_CMD         = 0x101,
-- 
1.8.4.5

++++++ 0005-drbd-Functions-to-notify-peer-node-to-start.patch ++++++
>From b831a988370d6b6e2c989c40736155d529be3273 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 18:15:07 +0800
Subject: [Patch v2 05/10] drbd: Functions to notify peer node to zero out

Notify peer node to start zeroing out device.
Update state of peer node when both nodes are
finished zeroing.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_int.h  |  2 ++
 drbd/drbd_main.c | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h
index 014b65e..f43f957 100644
--- a/drbd/drbd_int.h
+++ b/drbd/drbd_int.h
@@ -1208,6 +1208,8 @@ extern int __drbd_send_protocol(struct drbd_connection 
*connection, enum drbd_pa
 extern int drbd_send_protocol(struct drbd_connection *connection);
 extern int drbd_send_uuids(struct drbd_peer_device *);
 extern int drbd_send_uuids_skip_initial_sync(struct drbd_peer_device *);
+extern int drbd_send_zero_out_start(struct drbd_peer_device *);
+extern int drbd_send_zero_out_finish(struct drbd_peer_device *);
 extern int drbd_send_zero_out_ok(struct drbd_peer_device *);
 extern int drbd_send_zero_out_fail(struct drbd_peer_device *);
 extern void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *);
diff --git a/drbd/drbd_main.c b/drbd/drbd_main.c
index 740015e..2b821cd 100644
--- a/drbd/drbd_main.c
+++ b/drbd/drbd_main.c
@@ -908,6 +908,25 @@ int drbd_send_uuids_skip_initial_sync(struct 
drbd_peer_device *peer_device)
        return _drbd_send_uuids(peer_device, 8);
 }
 
+
+/**
+ * drbd_send_zero_out_start() - Notify peer node to start zero out
+ * @peer_device:       DRBD peer device.
+ */
+int drbd_send_zero_out_start(struct drbd_peer_device *peer_device)
+{
+       return _drbd_send_uuids(peer_device, 16);
+}
+
+/**
+ * drbd_send_zero_out_finish() - Notify both node finished zeroing out
+ * @peer_device:       DRBD peer device.
+ */
+int drbd_send_zero_out_finish(struct drbd_peer_device *peer_device)
+{
+       return _drbd_send_uuids(peer_device, 32);
+}
+
 /**
  * _drbd_send_zero_out_state() - Sends the drbd state to the peer
  * @peer_device:       DRBD peer device.
-- 
1.8.4.5

++++++ 0006-drbd-Wapper-for-zeroing-out-device-by-worker.patch ++++++
>From 8bef1ececca3cf22c35f3e9ef95e72c0fd8125a9 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 18:22:25 +0800
Subject: [Patch v2 06/10] drbd: Wapper for zeroing out device by worker

Wapper functions for drbd_device_post_work to start
zeroing out device. Change state when both node
finish zeroing.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_int.h    |  2 ++
 drbd/drbd_worker.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)

diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h
index f43f957..dd680a9 100644
--- a/drbd/drbd_int.h
+++ b/drbd/drbd_int.h
@@ -1670,6 +1670,8 @@ extern bool drbd_rs_c_min_rate_throttle(struct 
drbd_device *device);
 extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t 
sector,
                bool throttle_if_app_is_waiting);
 extern int zero_out_local_device(struct drbd_device *device);
+extern void require_zero_out_local_device(struct drbd_device *device);
+extern void receive_zero_out_local_device(struct drbd_device *device);
 extern int drbd_submit_peer_request(struct drbd_device *,
                                    struct drbd_peer_request *, const unsigned,
                                    const int);
diff --git a/drbd/drbd_worker.c b/drbd/drbd_worker.c
index 50564f5..293aa27 100644
--- a/drbd/drbd_worker.c
+++ b/drbd/drbd_worker.c
@@ -1674,6 +1674,69 @@ int zero_out_local_device(struct drbd_device *device)
                device->ldev->known_size, GFP_NOIO, false);
 }
 
+/**
+ * require_zero_out_local_device()
+ * @device: DRBD device.
+ *
+ * Description:
+ * Start to zero out local device. Update
+ * status if peer node (secondary) finished
+ * zeroing.
+ *
+**/
+void require_zero_out_local_device(struct drbd_device *device)
+{
+       int zero_out_err = 0;
+
+       zero_out_err = zero_out_local_device(device);
+
+       if (zero_out_err) {
+               drbd_err(device, "Failed to zero out local device\n");
+               set_bit(ZERO_FAIL, &device->flags);
+               drbd_chk_io_error(device, 1, DRBD_WRITE_ERROR);
+       } else {
+               drbd_info(device, "Finished zero out local device.\n");
+
+               if (test_and_clear_bit(ZERO_DONE, &device->flags)) {
+                       spin_lock_irq(&device->resource->req_lock);
+                       _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE,
+                               pdsk, D_UP_TO_DATE), CS_VERBOSE, NULL);
+                       spin_unlock_irq(&device->resource->req_lock);
+                       drbd_send_zero_out_finish(first_peer_device(device));
+               } else if (test_and_clear_bit(ZERO_FAIL, &device->flags)) {
+                       drbd_info(device, "Peer device has already failed on 
zero out\n");
+               } else {
+                       /* waiting for peer device finished */
+                       set_bit(ZERO_DONE, &device->flags);
+               }
+       }
+}
+
+/**
+ * receive_zero_out_local_device()
+ * @device: DRBD device.
+ *
+ * Description:
+ * Start to zero out local device.
+ * Notify peer node the zeroing result.
+ *
+**/
+void receive_zero_out_local_device(struct drbd_device *device)
+{
+       int zero_out_err = 0;
+       struct drbd_peer_device *const peer_device = first_peer_device(device);
+
+       zero_out_err = zero_out_local_device(device);
+       if (zero_out_err) {
+               drbd_err(device, "Failed to zero out local device\n");
+               drbd_send_zero_out_fail(peer_device);
+               drbd_chk_io_error(device, 1, DRBD_WRITE_ERROR);
+       } else {
+               drbd_info(device, "Finished zero out local device.\n");
+               drbd_send_zero_out_ok(peer_device);
+       }
+}
+
 void start_resync_timer_fn(unsigned long data)
 {
        struct drbd_device *device = (struct drbd_device *) data;
-- 
1.8.4.5

++++++ 0007-drbd-Flags-for-background-drbd-device-work.patch ++++++
>From 88d3c5ee059952db304f5f3f82ca4c5e4a72a7a5 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 18:25:19 +0800
Subject: [Patch v2 07/10] drbd: Flags for background drbd device work

Background drbd device work for zeroing out device.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_int.h    | 3 +++
 drbd/drbd_worker.c | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h
index dd680a9..287ffd7 100644
--- a/drbd/drbd_int.h
+++ b/drbd/drbd_int.h
@@ -622,6 +622,9 @@ enum {
        RS_START,               /* tell worker to start resync/OV */
        RS_PROGRESS,            /* tell worker that resync made significant 
progress */
        RS_DONE,                /* tell worker that resync is done */
+       P_ZERO_START,           /* tell worker to zero out device */
+       S_ZERO_START,           /* tell worker to zero out device as requested*/
+
        /* used for zero out device */
        ZERO_DONE,              /* succeed on zero out a device */
        ZERO_FAIL,              /* fail to zero out a device */
diff --git a/drbd/drbd_worker.c b/drbd/drbd_worker.c
index 293aa27..23e82c1 100644
--- a/drbd/drbd_worker.c
+++ b/drbd/drbd_worker.c
@@ -2070,6 +2070,10 @@ static void do_device_work(struct drbd_device *device, 
const unsigned long todo)
                drbd_ldev_destroy(device);
        if (test_bit(RS_START, &todo))
                do_start_resync(device);
+       if (test_bit(P_ZERO_START, &todo))
+               require_zero_out_local_device(device);
+       if (test_bit(S_ZERO_START, &todo))
+               receive_zero_out_local_device(device);
 }
 
 #define DRBD_DEVICE_WORK_MASK  \
@@ -2079,6 +2083,8 @@ static void do_device_work(struct drbd_device *device, 
const unsigned long todo)
        |(1UL << RS_START)      \
        |(1UL << RS_PROGRESS)   \
        |(1UL << RS_DONE)       \
+       |(1UL << P_ZERO_START)  \
+       |(1UL << S_ZERO_START)  \
        )
 
 static unsigned long get_work_bits(unsigned long *flags)
-- 
1.8.4.5

++++++ 0008-drbd-Function-to-work-with-packet-P_ZERO_OUT.patch ++++++
>From fb7da7037d9096bd34285425f85c4b4584e55701 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 18:29:25 +0800
Subject: [Patch v2 08/10] drbd: Function to work with packet P_ZERO_OUT

Using packet P_ZERO_OUT to update zero out
status of peer node.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_receiver.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drbd/drbd_receiver.c b/drbd/drbd_receiver.c
index 5e6b149..6eae84f 100644
--- a/drbd/drbd_receiver.c
+++ b/drbd/drbd_receiver.c
@@ -4383,6 +4383,41 @@ static union drbd_state convert_state(union drbd_state 
ps)
        return ms;
 }
 
+static int receive_zero_out_state(struct drbd_connection *connection, struct 
packet_info *pi)
+{
+       struct drbd_peer_device *peer_device;
+       struct drbd_device *device;
+       struct p_state *p = pi->data;
+       unsigned int isfail;
+
+       peer_device = conn_peer_device(connection, pi->vnr);
+       if (!peer_device)
+               return -EIO;
+       device = peer_device->device;
+
+       isfail = be32_to_cpu(p->state);
+
+       if (isfail) {
+               drbd_info(device, "Failed to zero out peer device\n");
+               set_bit(ZERO_FAIL, &device->flags);
+       } else {
+               drbd_info(device, "Finished zero out peer device\n");
+               if (test_and_clear_bit(ZERO_DONE, &device->flags)) {
+                       drbd_info(device, "Both side finished zeroing.\n");
+                       spin_lock_irq(&device->resource->req_lock);
+                       _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE,
+                               pdsk, D_UP_TO_DATE), CS_VERBOSE, NULL);
+                       spin_unlock_irq(&device->resource->req_lock);
+                       drbd_send_zero_out_finish(peer_device);
+               } else {
+                       /* waiting for local device finished */
+                       set_bit(ZERO_DONE, &device->flags);
+               }
+       }
+
+       return 0;
+}
+
 static int receive_req_state(struct drbd_connection *connection, struct 
packet_info *pi)
 {
        struct drbd_peer_device *peer_device;
@@ -5008,6 +5043,7 @@ static struct data_cmd drbd_cmd_handler[] = {
        [P_CONN_ST_CHG_REQ] = { 0, sizeof(struct p_req_state), 
receive_req_conn_state },
        [P_PROTOCOL_UPDATE] = { 1, sizeof(struct p_protocol), receive_protocol 
},
        [P_TRIM]            = { 0, sizeof(struct p_trim), receive_Data },
+       [P_ZERO_OUT]        = { 0, sizeof(struct p_state), 
receive_zero_out_state },
 };
 
 static void drbdd(struct drbd_connection *connection)
-- 
1.8.4.5

++++++ 0009-drbd-Receive-zero-out-command-from-peer-node.patch ++++++
>From 8ef810075675a5453d81adb64f5d35b375cd0959 Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 18:34:30 +0800
Subject: [Patch v2 09/10] drbd: Handle zero out command from peer node

Recevie P_UUID flag 16 for starting zero out device,
P_UUID flag 32 after both side finished zeroing,
Change state to uptodate.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_receiver.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/drbd/drbd_receiver.c b/drbd/drbd_receiver.c
index 6eae84f..4d6d99a 100644
--- a/drbd/drbd_receiver.c
+++ b/drbd/drbd_receiver.c
@@ -4317,6 +4317,15 @@ static int receive_uuids(struct drbd_connection 
*connection, struct packet_info
                        peer_device->connection->agreed_pro_version >= 90 &&
                        device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED 
&&
                        (p_uuid[UI_FLAGS] & 8);
+               int zero_out_devices =
+                       device->state.conn == C_CONNECTED &&
+                       peer_device->connection->agreed_pro_version >= 90 &&
+                       device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED 
&&
+                       (p_uuid[UI_FLAGS] & 16);
+               int zero_out_finish =
+                       device->state.conn == C_CONNECTED &&
+                       peer_device->connection->agreed_pro_version >= 90 &&
+                       (p_uuid[UI_FLAGS] & 32);
                if (skip_initial_sync) {
                        drbd_info(device, "Accepted new current UUID, preparing 
to skip initial sync\n");
                        drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
@@ -4324,11 +4333,35 @@ static int receive_uuids(struct drbd_connection 
*connection, struct packet_info
                                        BM_LOCKED_TEST_ALLOWED);
                        _drbd_uuid_set(device, UI_CURRENT, p_uuid[UI_CURRENT]);
                        _drbd_uuid_set(device, UI_BITMAP, 0);
+                       spin_lock_irq(&device->resource->req_lock);
                        _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, 
D_UP_TO_DATE),
                                        CS_VERBOSE, NULL);
+                       spin_unlock_irq(&device->resource->req_lock);
                        drbd_md_sync(device);
                        updated_uuids = 1;
                }
+
+               if (zero_out_devices) {
+                       drbd_info(device, "Accepted to zero out devices, will 
take a long time\n");
+                       drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
+                                       "clear_n_write from receive_uuids",
+                                       BM_LOCKED_TEST_ALLOWED);
+                       _drbd_uuid_set(device, UI_CURRENT, p_uuid[UI_CURRENT]);
+                       _drbd_uuid_set(device, UI_BITMAP, 0);
+                       drbd_print_uuids(device, "cleared bitmap UUID for 
zeroing device");
+
+                       drbd_device_post_work(device, S_ZERO_START);
+                       updated_uuids = 1;
+               }
+
+               if (zero_out_finish) {
+                       drbd_info(device, "Both side finished zero out 
devices.\n");
+                       spin_lock_irq(&device->resource->req_lock);
+                       _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, 
D_UP_TO_DATE),
+                                       CS_VERBOSE, NULL);
+                       spin_unlock_irq(&device->resource->req_lock);
+               }
+
                put_ldev(device);
        } else if (device->state.disk < D_INCONSISTENT &&
                   device->state.role == R_PRIMARY) {
-- 
1.8.4.5

++++++ 0010-drbd-Handle-new-current-uuid-zap-devices.patch ++++++
>From 5874ec7ba93074fdc3c2e878080a4b08d3408bbf Mon Sep 17 00:00:00 2001
From: Nick Wang <[email protected]>
Date: Fri, 10 Jul 2015 18:39:12 +0800
Subject: [Patch v2 10/10] drbd: Handle new-current-uuid --zap-devices

Zap devices for zeroing out device on both side
instead of initial full sync.

Signed-off-by: Nick Wang <[email protected]>
CC: Philipp Reisner <[email protected]>
CC: Lars Ellenberg <[email protected]>
CC: [email protected]
CC: [email protected]
---
 drbd/drbd_nl.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drbd/drbd_nl.c b/drbd/drbd_nl.c
index 1d17663..131f112 100644
--- a/drbd/drbd_nl.c
+++ b/drbd/drbd_nl.c
@@ -4068,7 +4068,7 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct 
genl_info *info)
        drbd_uuid_set(device, UI_BITMAP, 0); /* Rotate UI_BITMAP to History 1, 
etc... */
        drbd_uuid_new_current(device); /* New current, previous to UI_BITMAP */
 
-       if (args.clear_bm) {
+       if (args.clear_bm || args.zap_devices) {
                err = drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
                        "clear_n_write from new_c_uuid", BM_LOCKED_MASK);
                if (err) {
@@ -4084,6 +4084,16 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct 
genl_info *info)
                                        CS_VERBOSE, NULL);
                        spin_unlock_irq(&device->resource->req_lock);
                }
+               if (zero_out_devices) {
+                       drbd_send_zero_out_start(first_peer_device(device));
+                       _drbd_uuid_set(device, UI_BITMAP, 0);
+                       drbd_print_uuids(device, "cleared bitmap UUID for 
zeroing device");
+
+                       /* CLear bit flag of zero out */
+                       clear_bit(ZERO_DONE, &device->flags);
+                       clear_bit(ZERO_FAIL, &device->flags);
+                       drbd_device_post_work(device, P_ZERO_START);
+               }
        }
 
        drbd_md_sync(device);
-- 
1.8.4.5

++++++ Module.supported ++++++
updates/drbd.ko
++++++ preamble ++++++
Requires: kernel-%1

Reply via email to