File zeroout-discard-devices.patch of Package drbd-utils

From c80e2258d59d264d56bbea212ec98a114a1de32a Mon Sep 17 00:00:00 2001
From: Nick Wang <nwang@suse.com>
Date: Tue, 21 Jul 2015 10:32:41 +0800
Subject: [PATCH 1/1] drbdsetup: Support zeroout/discard devices instead of
 initial full sync.

---
 documentation/v84/drbdsetup.xml | 18 ++++++++++++++++++
 user/v84/config_flags.c         |  2 ++
 user/v84/linux/drbd_genl.h      |  2 ++
 3 files changed, 22 insertions(+)

diff --git a/documentation/v84/drbdsetup.xml b/documentation/v84/drbdsetup.xml
index d4c4e87..039c6d8 100644
--- a/documentation/v84/drbdsetup.xml
+++ b/documentation/v84/drbdsetup.xml
@@ -1705,6 +1705,24 @@
               <para>Clears the sync bitmap in addition to generating a new current UUID.</para>
             </listitem>
           </varlistentry>
+
+          <varlistentry>
+            <term><option>--zeroout-devices</option></term>
+
+            <listitem>
+              <para>Start to zeroing out the device on both side in addition to generating
+              a new current UUID .</para>
+            </listitem>
+          </varlistentry>
+
+          <varlistentry>
+            <term><option>--discard-devices</option></term>
+
+            <listitem>
+              <para>Start to allocate a thinly provided backing device on both side in
+              addition to generating a new current UUID .</para>
+            </listitem>
+          </varlistentry>
         </variablelist></para>
 
       <para>This can be used to skip the initial sync, if you want to start from scratch. This
diff --git a/user/v84/config_flags.c b/user/v84/config_flags.c
index 3b0303f..b9870fa 100644
--- a/user/v84/config_flags.c
+++ b/user/v84/config_flags.c
@@ -1019,6 +1019,8 @@ struct context_def new_current_uuid_cmd_ctx = {
 	NLA_POLICY(new_c_uuid_parms),
 	.fields = {
 		{ "clear-bitmap", FLAG(clear_bm) },
+		{ "zeroout-devices", FLAG(zeroout_devices) },
+		{ "discard-devices", FLAG(discard_devices) },
 		{ } },
 };
 
diff --git a/user/v84/linux/drbd_genl.h b/user/v84/linux/drbd_genl.h
index 8ddedd1..2aabe4c 100644
--- a/user/v84/linux/drbd_genl.h
+++ b/user/v84/linux/drbd_genl.h
@@ -238,6 +238,8 @@ 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, 0, zeroout_devices)
+	__flg_field(3, 0, discard_devices)
 )
 
 GENL_struct(DRBD_NLA_TIMEOUT_PARMS, 11, timeout_parms,
-- 
2.1.4