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Fri, 26 Nov 2021 10:32:16 -0500 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 96CF71FD38; Fri, 26 Nov 2021 15:32:02 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 66A8613C65; Fri, 26 Nov 2021 15:32:02 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id qIioF/L9oGG8bgAAMHmgww (envelope-from ); Fri, 26 Nov 2021 15:32:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1637940722; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fzUZzopLj5rsQL0kZO3hA1i41h6/JPWWfqATDlFHUlY=; b=NYp4LbVwAtiCmWL7UaOq5o4PB1K/xDazs/EXcmYGUvNmYptTfx/E6fTTX/mg9CXXLLM+VX 9RH3DrJ0IO2e1jus9cwji7R4IMWGeeVDVZJw9fQiPz+ld4dEkKmK8u2aqMHN4dSQa9uVzK jjFzEmEe2WbjBK8HlbV2qt3J3NJQXvI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1637940722; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fzUZzopLj5rsQL0kZO3hA1i41h6/JPWWfqATDlFHUlY=; b=88piAHG/c0tdvFXvpFPDyhOHz1s6drEzxJetweVsEIIrXm4QwOXIOvn0OgEtcJ27qpZXhF +oaH9oblE3qURNCg== From: Li Zhang To: quintela@redhat.com, dgilbert@redhat.com, cfontana@suse.de, qemu-devel@nongnu.org Subject: [PATCH 2/2] migration: Set the socket backlog number to reduce the chance of live migration failure Date: Fri, 26 Nov 2021 16:31:54 +0100 Message-Id: <20211126153154.25424-3-lizhang@suse.de> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211126153154.25424-1-lizhang@suse.de> References: <20211126153154.25424-1-lizhang@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=195.135.220.29; envelope-from=lizhang@suse.de; helo=smtp-out2.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Li Zhang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1637941086575100001 Content-Type: text/plain; charset="utf-8" When creating the guest on destination with -incoming ip:port in QEMU comma= nd line, the source code that sets the backlog number as the same as multifd channel= s doesn't get called. So the number of backlog is always 1. It's very easy to cause l= ive migration failure, so a bigger number is preferred to reduce the chance of the failur= e. Signed-off-by: Li Zhang --- migration/socket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/socket.c b/migration/socket.c index 05705a32d8..398d4c10fa 100644 --- a/migration/socket.c +++ b/migration/socket.c @@ -152,7 +152,7 @@ socket_start_incoming_migration_internal(SocketAddress = *saddr, QIONetListener *listener =3D qio_net_listener_new(); MigrationIncomingState *mis =3D migration_incoming_get_current(); size_t i; - int num =3D 1; + int num =3D 16; =20 qio_net_listener_set_name(listener, "migration-socket-listener"); =20 --=20 2.31.1