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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, richard.henderson@linaro.org,
	peter.maydell@linaro.org, vsementsov@virtuozzo.com,
	eblake@redhat.com, Hanna Reitz <hreitz@redhat.com>
Subject: [PULL v2 2/7] block/nbd: Delete open timer when done
Date: Fri, 11 Feb 2022 14:22:35 +0100	[thread overview]
Message-ID: <20220211132240.781958-3-vsementsov@virtuozzo.com> (raw)
In-Reply-To: <20220211132240.781958-1-vsementsov@virtuozzo.com>

From: Hanna Reitz <hreitz@redhat.com>

We start the open timer to cancel the connection attempt after a while.
Once nbd_do_establish_connection() has returned, the attempt is over,
and we no longer need the timer.

Delete it before returning from nbd_open(), so that it does not persist
for longer.  It has no use after nbd_open(), and just like the reconnect
delay timer, it might well be dangerous if it were to fire afterwards.

Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block/nbd.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/block/nbd.c b/block/nbd.c
index 16cd7fef77..5ff8a57314 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -1885,11 +1885,19 @@ static int nbd_open(BlockDriverState *bs, QDict *options, int flags,
         goto fail;
     }
 
+    /*
+     * The connect attempt is done, so we no longer need this timer.
+     * Delete it, because we do not want it to be around when this node
+     * is drained or closed.
+     */
+    open_timer_del(s);
+
     nbd_client_connection_enable_retry(s->conn);
 
     return 0;
 
 fail:
+    open_timer_del(s);
     nbd_clear_bdrvstate(bs);
     return ret;
 }
-- 
2.31.1



  parent reply	other threads:[~2022-02-11 13:57 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-11 13:22 [PULL v2 0/7] nbd: handle AioContext change correctly Vladimir Sementsov-Ogievskiy
2022-02-11 13:22 ` [PULL v2 1/7] block/nbd: Delete reconnect delay timer when done Vladimir Sementsov-Ogievskiy
2022-02-11 13:22 ` Vladimir Sementsov-Ogievskiy [this message]
2022-02-11 13:22 ` [PULL v2 3/7] block/nbd: Assert there are no timers when closed Vladimir Sementsov-Ogievskiy
2022-02-11 13:22 ` [PULL v2 4/7] iotests.py: Add QemuStorageDaemon class Vladimir Sementsov-Ogievskiy
2022-02-11 13:22 ` [PULL v2 5/7] iotests/281: Test lingering timers Vladimir Sementsov-Ogievskiy
2022-02-11 13:22 ` [PULL v2 6/7] block/nbd: Move s->ioc on AioContext change Vladimir Sementsov-Ogievskiy
2022-02-11 13:22 ` [PULL v2 7/7] iotests/281: Let NBD connection yield in iothread Vladimir Sementsov-Ogievskiy
2022-02-13 10:41 ` [PULL v2 0/7] nbd: handle AioContext change correctly Peter Maydell

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