--- /dev/null
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Wolfgang Bumiller <w.bumiller@proxmox.com>
+Date: Wed, 9 Dec 2015 15:04:57 +0100
+Subject: [PATCH] backup: modify job api
+
+Introduce a pause_count parameter to start a backup in
+paused mode. This way backups of multiple drives can be
+started up sequentially via the completion callback while
+having been started at the same point in time.
+---
+ block/backup.c | 2 ++
+ block/replication.c | 2 +-
+ blockdev.c | 4 ++--
+ blockjob.c | 2 +-
+ include/block/block_int.h | 1 +
+ 5 files changed, 7 insertions(+), 4 deletions(-)
+
+diff --git a/block/backup.c b/block/backup.c
+index 99e6bcc748..8c2967a8cb 100644
+--- a/block/backup.c
++++ b/block/backup.c
+@@ -539,6 +539,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+ BlockdevOnError on_target_error,
+ int creation_flags,
+ BlockCompletionFunc *cb, void *opaque,
++ int pause_count,
+ BlockJobTxn *txn, Error **errp)
+ {
+ int64_t len;
+@@ -663,6 +664,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+ block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL,
+ &error_abort);
+ job->common.len = len;
++ job->common.pause_count = pause_count;
+ block_job_txn_add_job(txn, &job->common);
+
+ return &job->common;
+diff --git a/block/replication.c b/block/replication.c
+index e41e293d2b..1b08b242eb 100644
+--- a/block/replication.c
++++ b/block/replication.c
+@@ -561,7 +561,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode,
+ 0, MIRROR_SYNC_MODE_NONE, NULL, false,
+ BLOCKDEV_ON_ERROR_REPORT,
+ BLOCKDEV_ON_ERROR_REPORT, BLOCK_JOB_INTERNAL,
+- backup_job_completed, bs, NULL, &local_err);
++ backup_job_completed, bs, 0, NULL, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ backup_job_cleanup(bs);
+diff --git a/blockdev.c b/blockdev.c
+index 56a6b24a0b..a9ed9034b5 100644
+--- a/blockdev.c
++++ b/blockdev.c
+@@ -3293,7 +3293,7 @@ static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn,
+ job = backup_job_create(backup->job_id, bs, target_bs, backup->speed,
+ backup->sync, bmap, backup->compress,
+ backup->on_source_error, backup->on_target_error,
+- BLOCK_JOB_DEFAULT, NULL, NULL, txn, &local_err);
++ BLOCK_JOB_DEFAULT, NULL, NULL, 0, txn, &local_err);
+ bdrv_unref(target_bs);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+@@ -3372,7 +3372,7 @@ BlockJob *do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn,
+ job = backup_job_create(backup->job_id, bs, target_bs, backup->speed,
+ backup->sync, NULL, backup->compress,
+ backup->on_source_error, backup->on_target_error,
+- BLOCK_JOB_DEFAULT, NULL, NULL, txn, &local_err);
++ BLOCK_JOB_DEFAULT, NULL, NULL, 0, txn, &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ }
+diff --git a/blockjob.c b/blockjob.c
+index 715c2c2680..c1b6b6a810 100644
+--- a/blockjob.c
++++ b/blockjob.c
+@@ -322,7 +322,7 @@ void block_job_start(BlockJob *job)
+ job->co = qemu_coroutine_create(block_job_co_entry, job);
+ job->pause_count--;
+ job->busy = true;
+- job->paused = false;
++ job->paused = job->pause_count > 0;
+ bdrv_coroutine_enter(blk_bs(job->blk), job->co);
+ }
+
+diff --git a/include/block/block_int.h b/include/block/block_int.h
+index a5482775ec..1dbbdafd31 100644
+--- a/include/block/block_int.h
++++ b/include/block/block_int.h
+@@ -985,6 +985,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+ BlockdevOnError on_target_error,
+ int creation_flags,
+ BlockCompletionFunc *cb, void *opaque,
++ int pause_count,
+ BlockJobTxn *txn, Error **errp);
+
+ void hmp_drive_add_node(Monitor *mon, const char *optstr);
+--
+2.11.0
+