qemu/qapi-block-core-Add-retry-option-for-error-action.patch

From cfc15dc456126a6fb811f0c51af8d8ce5c4a4a1b Mon Sep 17 00:00:00 2001
From: yexiao <yexiao7@huawei.com>
Date: Thu, 21 Jan 2021 15:46:45 +0800
Subject: [PATCH] qapi/block-core: Add retry option for error action

Add a new error action 'retry' to support retry on errors.

Signed-off-by: Jiahui Cen <cenjiahui(a)huawei.com>
Signed-off-by: Ying Fang <fangying1(a)huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
---
 blockdev.c           | 2 ++
 qapi/block-core.json | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index c91f49e7b6..2817f73fad 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -326,6 +326,8 @@ static int parse_block_error_action(const char *buf, bool is_read, Error **errp)
         return BLOCKDEV_ON_ERROR_STOP;
     } else if (!strcmp(buf, "report")) {
         return BLOCKDEV_ON_ERROR_REPORT;
+    } else if (!strcmp(buf, "retry")) {
+        return BLOCKDEV_ON_ERROR_RETRY;
     } else {
         error_setg(errp, "'%s' invalid %s error action",
                    buf, is_read ? "read" : "write");
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 1444624590..ded6f0f6d2 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1286,10 +1286,12 @@
 #
 # @auto: inherit the error handling policy of the backend (since: 2.7)
 #
+# @retry: retrying IO with errors
+#
 # Since: 1.3
 ##
 { 'enum': 'BlockdevOnError',
-  'data': ['report', 'ignore', 'enospc', 'stop', 'auto'] }
+  'data': ['report', 'ignore', 'enospc', 'stop', 'auto', 'retry'] }
 
 ##
 # @MirrorSyncMode:
@@ -5480,10 +5482,12 @@
 #
 # @stop: error caused VM to be stopped
 #
+# @retry: retry IO with errors
+#
 # Since: 2.1
 ##
 { 'enum': 'BlockErrorAction',
-  'data': [ 'ignore', 'report', 'stop' ] }
+  'data': [ 'ignore', 'report', 'stop', 'retry' ] }
 
 ##
 # @BLOCK_IMAGE_CORRUPTED:
-- 
2.27.0