--- /dev/null
+From 7f74494cc36b70074bbdf8aaaca7eb7d0ad6c5e5 Mon Sep 17 00:00:00 2001
+From: Wolfgang Bumiller <w.bumiller@proxmox.com>
+Date: Wed, 9 Dec 2015 15:39:36 +0100
+Subject: [PATCH 18/41] backup: vma: correctly propagate error
+
+---
+ blockdev.c | 2 +-
+ vma-writer.c | 7 +++++++
+ vma.h | 1 +
+ 3 files changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/blockdev.c b/blockdev.c
+index fb71cdc..2e51913 100644
+--- a/blockdev.c
++++ b/blockdev.c
+@@ -3037,7 +3037,7 @@ static int pvebackup_dump_cb(void *opaque, BlockBackend *target,
+ buf, &zero_bytes);
+ if (ret < 0) {
+ if (!backup_state.error) {
+- error_setg(&backup_state.error, "vma_writer_write error %d", ret);
++ vma_writer_error_propagate(backup_state.vmaw, &backup_state.error);
+ }
+ if (di->bs && di->bs->job) {
+ block_job_cancel(di->bs->job);
+diff --git a/vma-writer.c b/vma-writer.c
+index b0cf529..689e988 100644
+--- a/vma-writer.c
++++ b/vma-writer.c
+@@ -792,6 +792,13 @@ vma_writer_write(VmaWriter *vmaw, uint8_t dev_id, int64_t cluster_num,
+ return transferred;
+ }
+
++void vma_writer_error_propagate(VmaWriter *vmaw, Error **errp)
++{
++ if (vmaw->status < 0 && *errp == NULL) {
++ error_setg(errp, "%s", vmaw->errmsg);
++ }
++}
++
+ int vma_writer_close(VmaWriter *vmaw, Error **errp)
+ {
+ g_assert(vmaw != NULL);
+diff --git a/vma.h b/vma.h
+index 9bb6ea4..98377e4 100644
+--- a/vma.h
++++ b/vma.h
+@@ -116,6 +116,7 @@ typedef struct VmaDeviceInfo {
+
+ VmaWriter *vma_writer_create(const char *filename, uuid_t uuid, Error **errp);
+ int vma_writer_close(VmaWriter *vmaw, Error **errp);
++void vma_writer_error_propagate(VmaWriter *vmaw, Error **errp);
+ void vma_writer_destroy(VmaWriter *vmaw);
+ int vma_writer_add_config(VmaWriter *vmaw, const char *name, gpointer data,
+ size_t len);
+--
+2.1.4
+