From: Lukas Straub <lukasstraub2@web.de>
To: qemu-devel@nongnu.org
Cc: Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>,
yong.huang@smartx.com
Subject: Re: [PATCH] multifd: Make the main thread yield periodically to the main loop
Date: Thu, 7 Aug 2025 11:36:39 +0200 [thread overview]
Message-ID: <20250807113639.66d1c5bf@penguin> (raw)
In-Reply-To: <5512220e1005ae2bc7357b2def32639d164e84eb.1754534263.git.yong.huang@smartx.com>
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On Thu, 7 Aug 2025 10:41:17 +0800
yong.huang@smartx.com wrote:
> From: Hyman Huang <yong.huang@smartx.com>
>
> When there are network issues like missing TCP ACKs on the send
> side during the multifd live migration. At the send side, the error
> "Connection timed out" is thrown out and source QEMU process stop
> sending data, at the receive side, The IO-channels may be blocked
> at recvmsg() and thus the main loop gets stuck and fails to respond
> to QMP commands consequently.
> ...
Hi Hyman Huang,
Have you tried the 'yank' command to shutdown the sockets? It exactly
meant to recover from hangs and should solve your issue.
https://www.qemu.org/docs/master/interop/qemu-qmp-ref.html#yank-feature
Best regards,
Lukas Straub
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next prev parent reply other threads:[~2025-08-07 9:37 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-07 2:41 [PATCH] multifd: Make the main thread yield periodically to the main loop yong.huang
2025-08-07 9:32 ` Lukas Straub
2025-08-07 9:36 ` Lukas Straub [this message]
2025-08-08 2:36 ` Yong Huang
2025-08-08 7:01 ` Lukas Straub
2025-08-08 8:02 ` Yong Huang
2025-08-08 13:55 ` Fabiano Rosas
2025-08-08 15:37 ` Peter Xu
2025-08-11 2:25 ` Yong Huang
2025-08-11 7:03 ` Lukas Straub
2025-08-11 13:53 ` Fabiano Rosas
2025-08-19 10:31 ` Daniel P. Berrangé
2025-08-19 12:03 ` Lukas Straub
2025-08-19 12:07 ` Daniel P. Berrangé
2025-08-19 20:03 ` Peter Xu
2025-08-11 2:27 ` Yong Huang
2025-08-08 6:36 ` Yong Huang
2025-08-08 15:42 ` Peter Xu
2025-08-11 2:02 ` Yong Huang
2025-08-19 10:19 ` Daniel P. Berrangé
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