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block-backend: Stop retrying when draining

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Retrying failed requests when draining would make the draining hung. So it
is better not to trigger the retry timer when draining. And after the
virtual devices go back to work, they would retry those queued requests.

Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Ying Fang <fangying1@huawei.com>
This commit is contained in:
Huawei Technologies Co., Ltd 2021-02-25 18:03:57 +08:00 committed by Euler Robot
parent f8b7dd549d
commit 5f96f6bac3
1 changed files with 37 additions and 0 deletions
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block-backend-Stop-retrying-when-draining.patch Normal file
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@ -0,0 +1,37 @@
From da64af4b1e92c345296d937e66136f86027d1ca2 Mon Sep 17 00:00:00 2001
From: Jiahui Cen <cenjiahui@huawei.com>
Date: Thu, 25 Feb 2021 18:03:57 +0800
Subject: [PATCH] block-backend: Stop retrying when draining
Retrying failed requests when draining would make the draining hung. So it
is better not to trigger the retry timer when draining. And after the
virtual devices go back to work, they would retry those queued requests.
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Ying Fang <fangying1@huawei.com>
---
block/block-backend.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/block/block-backend.c b/block/block-backend.c
index 2d812e2254..f6c918f1d9 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1741,9 +1741,11 @@ void blk_error_action(BlockBackend *blk, BlockErrorAction action,
send_qmp_error_event(blk, action, is_read, error);
qemu_system_vmstop_request(RUN_STATE_IO_ERROR);
} else if (action == BLOCK_ERROR_ACTION_RETRY) {
- timer_mod(blk->retry_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) +
- blk->retry_interval);
- send_qmp_error_event(blk, action, is_read, error);
+ if (!blk->quiesce_counter) {
+ timer_mod(blk->retry_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) +
+ blk->retry_interval);
+ send_qmp_error_event(blk, action, is_read, error);
+ }
} else {
send_qmp_error_event(blk, action, is_read, error);
}
--
2.27.0