From patchwork Sat Dec 16 13:42:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 1876898 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Btigtxqo; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SsnSg1RLMz20LT for ; Sun, 17 Dec 2023 00:46:59 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Btigtxqo; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4SsnSg06LNz3vXk for ; Sun, 17 Dec 2023 00:46:59 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Btigtxqo; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::132; helo=mail-il1-x132.google.com; envelope-from=npiggin@gmail.com; receiver=lists.ozlabs.org) Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4SsnNn3TG0z2ykC for ; Sun, 17 Dec 2023 00:43:37 +1100 (AEDT) Received: by mail-il1-x132.google.com with SMTP id e9e14a558f8ab-35f418f394dso7224875ab.0 for ; Sat, 16 Dec 2023 05:43:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1702734215; x=1703339015; darn=lists.ozlabs.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=0LS2wk0HqoVQXxTkAWKXFyNQT//H5V0Lk+DNT58M8Y8=; b=BtigtxqozelVQdAwPv4Zzm+EqPbgQ2ElFnAPmf7Ita4Qy4TKX5dl7xIWa60+ogBLv7 0CHoCXE3QkUt60I8wEQX8pGzkUwlCLcnxdSyWC99tv6JrRN2zlFN5FEZZMnKetdh5vT3 H4GIMsFWmpWBzBOKgiOQGO3Y9Sp+SSLPogaPeAkAXAKK6Fs5gIxiroqBthNN+0+jMuoD x9fxpp0v9IwR3c4epKjlgUzUJKi3nah3/D1EgyjbV7wheZXygmNYmsQ85wgaQP05flZN n9kva9PReauyIZ2uLB7tlDXGOJu2fbKDtgUFjU+AOLIEYHAKS7OTj4GXGR5/sk3H0P/F 44RA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702734215; x=1703339015; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0LS2wk0HqoVQXxTkAWKXFyNQT//H5V0Lk+DNT58M8Y8=; b=v+sD4ZF9sphqi1xhUdVyabpPIaHwDUDgGuS6Hw2mK0YxwRz5Vro46IeMnyF9JP9Eyp lAeg60YBcCCRaUcMLVaLMmG8tfcG461IoxsZL/xsj9G8iMEM05FkDnbk3eHtx9Odqkzs 6GXdOnmBqX6JBjifuLBUa7o9NTIcJ6HDRInXH8YHBngexk0pJ3oBXSg4eru+JbDL335J bPxUdAZZSwW38BQTpE1jWDGSEmOhNwa5e/hELoh3IsLKD5hq1KLwFi0uzduOuVarnJwl +P/0rLFuxLAJDm3FkrHT7T9FBGiZbuByXidGt/5M7bdS50ASscRnjgdH+dX+lx0q/LF8 VLVw== X-Gm-Message-State: AOJu0YxuNwckZJ47iRFvUOqLPwgHGLW48D20dZsemMZnPEWhGaq1I01K x4A8f+chuwL5lqgiKOBj3H3NHnhjDWo= X-Google-Smtp-Source: AGHT+IGshhZvb1z6CrG2R2sGTX7f3QlSAvAP5H2THYME1OoWCfGtCprBeirIkMnuePbrF4XZ4bII/Q== X-Received: by 2002:a05:6e02:1e0c:b0:35f:535a:9c65 with SMTP id g12-20020a056e021e0c00b0035f535a9c65mr15289520ila.29.1702734214788; Sat, 16 Dec 2023 05:43:34 -0800 (PST) Received: from wheely.local0.net (203-221-42-190.tpgi.com.au. [203.221.42.190]) by smtp.gmail.com with ESMTPSA id w2-20020a654102000000b005c65ed23b65sm12663631pgp.94.2023.12.16.05.43.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Dec 2023 05:43:34 -0800 (PST) From: Nicholas Piggin To: kvm@vger.kernel.org Subject: [kvm-unit-tests PATCH v5 04/29] migration: Support multiple migrations Date: Sat, 16 Dec 2023 23:42:31 +1000 Message-ID: <20231216134257.1743345-5-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231216134257.1743345-1-npiggin@gmail.com> References: <20231216134257.1743345-1-npiggin@gmail.com> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Nico Boehr , Shaoqin Huang , Nicholas Piggin , Andrew Jones , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Support multiple migrations by flipping dest file/socket variables to source after the migration is complete, ready to start again. A new destination is created if the test outputs the migrate line again. Test cases may now switch to calling migrate() one or more times. Signed-off-by: Nicholas Piggin --- lib/migrate.c | 8 ++-- lib/migrate.h | 1 + scripts/arch-run.bash | 94 +++++++++++++++++++++++++++++++++++++------ 3 files changed, 86 insertions(+), 17 deletions(-) diff --git a/lib/migrate.c b/lib/migrate.c index 527e63ae..b7721659 100644 --- a/lib/migrate.c +++ b/lib/migrate.c @@ -8,8 +8,10 @@ #include #include "migrate.h" -/* static for now since we only support migrating exactly once per test. */ -static void migrate(void) +/* + * Initiate migration and wait for it to complete. + */ +void migrate(void) { puts("Now migrate the VM, then press a key to continue...\n"); (void)getchar(); @@ -19,8 +21,6 @@ static void migrate(void) /* * Initiate migration and wait for it to complete. * If this function is called more than once, it is a no-op. - * Since migrate_cmd can only migrate exactly once this function can - * simplify the control flow, especially when skipping tests. */ void migrate_once(void) { diff --git a/lib/migrate.h b/lib/migrate.h index 3c94e6af..2af06a72 100644 --- a/lib/migrate.h +++ b/lib/migrate.h @@ -6,4 +6,5 @@ * Author: Nico Boehr */ +void migrate(void); void migrate_once(void); diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash index 4d4e791c..02b15b4b 100644 --- a/scripts/arch-run.bash +++ b/scripts/arch-run.bash @@ -132,29 +132,77 @@ run_migration () migsock=$(mktemp -u -t mig-helper-socket.XXXXXXXXXX) migout1=$(mktemp -t mig-helper-stdout1.XXXXXXXXXX) migout_fifo1=$(mktemp -u -t mig-helper-fifo-stdout1.XXXXXXXXXX) + migout2=$(mktemp -t mig-helper-stdout2.XXXXXXXXXX) + migout_fifo2=$(mktemp -u -t mig-helper-fifo-stdout2.XXXXXXXXXX) qmp1=$(mktemp -u -t mig-helper-qmp1.XXXXXXXXXX) qmp2=$(mktemp -u -t mig-helper-qmp2.XXXXXXXXXX) fifo=$(mktemp -u -t mig-helper-fifo.XXXXXXXXXX) # race here between file creation and trap trap "trap - TERM ; kill 0 ; exit 2" INT TERM - trap "rm -f ${migout1} ${migsock} ${qmp1} ${qmp2} ${fifo}" RETURN EXIT + trap "rm -f ${migout1} ${migout2} ${migout_fifo1} ${migout_fifo2} ${migsock} ${qmp1} ${qmp2} ${fifo}" RETURN EXIT qmpout1=/dev/null qmpout2=/dev/null + migcmdline=$@ - eval "$@" -chardev socket,id=mon1,path=${qmp1},server=on,wait=off \ + mkfifo ${migout_fifo1} + mkfifo ${migout_fifo2} + + eval "$migcmdline" \ + -chardev socket,id=mon1,path=${qmp1},server=on,wait=off \ -mon chardev=mon1,mode=control > ${migout_fifo1} & live_pid=$! cat ${migout_fifo1} | tee ${migout1} & - # We have to use cat to open the named FIFO, because named FIFO's, unlike - # pipes, will block on open() until the other end is also opened, and that - # totally breaks QEMU... + # The test must prompt the user to migrate, so wait for the "migrate" + # keyword + while ! grep -q -i "Now migrate the VM" < ${migout1} ; do + if ! ps -p ${live_pid} > /dev/null ; then + echo "ERROR: Test exit before migration point." >&2 + echo > ${fifo} + qmp ${qmp1} '"quit"'> ${qmpout1} 2>/dev/null + return 3 + fi + sleep 0.1 + done + + # This starts the first source QEMU in advance of the test reaching the + # migration point, since we expect at least one migration. Subsequent + # sources are started as the test hits migrate keywords. + do_migration || return $? + + while ps -p ${live_pid} > /dev/null ; do + # Wait for EXIT or further migrations + if ! grep -q -i "Now migrate the VM" < ${migout1} ; then + sleep 0.1 + else + do_migration || return $? + fi + done + + wait ${live_pid} + ret=$? + + while (( $(jobs -r | wc -l) > 0 )); do + sleep 0.1 + done + + return $ret +} + +do_migration () +{ + # We have to use cat to open the named FIFO, because named FIFO's, + # unlike pipes, will block on open() until the other end is also + # opened, and that totally breaks QEMU... mkfifo ${fifo} - eval "$@" -chardev socket,id=mon2,path=${qmp2},server=on,wait=off \ - -mon chardev=mon2,mode=control -incoming unix:${migsock} < <(cat ${fifo}) & + eval "$migcmdline" \ + -chardev socket,id=mon2,path=${qmp2},server=on,wait=off \ + -mon chardev=mon2,mode=control -incoming unix:${migsock} \ + < <(cat ${fifo}) > ${migout_fifo2} & incoming_pid=$! + cat ${migout_fifo2} | tee ${migout2} & # The test must prompt the user to migrate, so wait for the "migrate" keyword while ! grep -q -i "Now migrate the VM" < ${migout1} ; do @@ -165,7 +213,7 @@ run_migration () qmp ${qmp2} '"quit"'> ${qmpout2} 2>/dev/null return 3 fi - sleep 1 + sleep 0.1 done # Wait until the destination has created the incoming socket @@ -176,7 +224,7 @@ run_migration () # Wait for the migration to complete migstatus=`qmp ${qmp1} '"query-migrate"' | grep return` while ! grep -q '"completed"' <<<"$migstatus" ; do - sleep 1 + sleep 0.1 if ! migstatus=`qmp ${qmp1} '"query-migrate"'`; then echo "ERROR: Querying migration state failed." >&2 echo > ${fifo} @@ -192,14 +240,34 @@ run_migration () return 2 fi done + qmp ${qmp1} '"quit"'> ${qmpout1} 2>/dev/null + + # keypress to dst so getchar completes and test continues echo > ${fifo} - wait $incoming_pid + rm ${fifo} + + # Ensure the incoming socket is removed, ready for next destination + if [ -S ${migsock} ] ; then + echo "ERROR: Incoming migration socket not removed after migration." >& 2 + qmp ${qmp2} '"quit"'> ${qmpout2} 2>/dev/null + return 2 + fi + + wait ${live_pid} ret=$? - while (( $(jobs -r | wc -l) > 0 )); do - sleep 0.5 - done + # Now flip the variables because dest becomes source + live_pid=${incoming_pid} + tmp=${migout1} + migout1=${migout2} + migout2=${tmp} + tmp=${migout_fifo1} + migout_fifo1=${migout_fifo2} + migout_fifo2=${tmp} + tmp=${qmp1} + qmp1=${qmp2} + qmp2=${tmp} return $ret }