--- /dev/null
+From 6775cc94517696abe12bbae601395b7a16e06ba0 Mon Sep 17 00:00:00 2001
+From: Wolfgang Bumiller <w.bumiller@proxmox.com>
+Date: Mon, 1 Aug 2016 10:52:46 +0200
+Subject: [PATCH 55/55] enable cache=unsafe for vma extract_content and
+ qmp_savevm_start
+
+We don't send any flush here, so we need to open with cache=unsafe.
+
+Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
+For-patch: BDRV_O_CACHE_WB was removed
+---
+ savevm-async.c | 2 +-
+ vma.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/savevm-async.c b/savevm-async.c
+index 2c41b17..6a2266c 100644
+--- a/savevm-async.c
++++ b/savevm-async.c
+@@ -253,7 +253,7 @@ void qmp_savevm_start(bool has_statefile, const char *statefile, Error **errp)
+ {
+ Error *local_err = NULL;
+
+- int bdrv_oflags = BDRV_O_RDWR;
++ int bdrv_oflags = BDRV_O_RDWR | BDRV_O_NO_FLUSH;
+ int ret;
+
+ if (snap_state.state != SAVE_STATE_DONE) {
+diff --git a/vma.c b/vma.c
+index 0716a45..4d2d5ad 100644
+--- a/vma.c
++++ b/vma.c
+@@ -280,7 +280,7 @@ static int extract_content(int argc, char **argv)
+ } else if (di) {
+ char *devfn = NULL;
+ const char *format = NULL;
+- int flags = BDRV_O_RDWR;
++ int flags = BDRV_O_RDWR | BDRV_O_NO_FLUSH;
+ bool write_zero = true;
+
+ if (readmap) {
+--
+2.1.4
+