From nobody Sat May 4 22:42:16 2024 Delivered-To: importer@patchew.org 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; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1585590625; cv=none; d=zohomail.com; s=zohoarc; b=JiK2UYxk6/dOMpMd3TjSJHFw5l4QCG3r+uQ/2L8LbiQi96/MfP20PPnu2W4tWvwehIP+ayRqtEBKKBbCEzP2FvN7LwJedwcbqHGI/YUR7hbywED9inK9nbmY7z/BYuMgoCQWnZyWeqIVA9pmSGGTqEx/dFFul9qI2bGjpxO6Klk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1585590625; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=BjRh3n7W9wCZ2T9AUJwwlBIhZbgIsaYAjAJZOwoDAbA=; b=kGA5AEOpU2gKUQORsBe8asjFtoeK0gLLgAG/0DTeFH/3i6UVNf9c7h88gUJRs6/L/wm+KpctHJxaOqS4yNreghbufvljbRqVAcWAGXk5qHMSeA6uUoY76ujHhTW4fa8MbAbPp7QHA5sGEy5RF8Os9fjKofzAvLnBb5BbBpeHTR0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1585590625457401.1316731356877; Mon, 30 Mar 2020 10:50:25 -0700 (PDT) Received: from localhost ([::1]:54270 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jIyYK-0005DU-11 for importer@patchew.org; Mon, 30 Mar 2020 13:50:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38254) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jIyX2-0003ul-D0 for qemu-devel@nongnu.org; Mon, 30 Mar 2020 13:49:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jIyX0-0002UR-VY for qemu-devel@nongnu.org; Mon, 30 Mar 2020 13:49:03 -0400 Received: from us-smtp-delivery-74.mimecast.com ([216.205.24.74]:36218) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jIyX0-0002TD-Q2 for qemu-devel@nongnu.org; Mon, 30 Mar 2020 13:49:02 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-489-9XMsZIGANm2PKOWLz9DXzA-1; Mon, 30 Mar 2020 13:48:58 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 16F9D104FB6D for ; Mon, 30 Mar 2020 17:48:57 +0000 (UTC) Received: from localhost (unknown [10.36.110.47]) by smtp.corp.redhat.com (Postfix) with ESMTP id E87E35DA66; Mon, 30 Mar 2020 17:48:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585590541; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=BjRh3n7W9wCZ2T9AUJwwlBIhZbgIsaYAjAJZOwoDAbA=; b=R20AAIoxtE7T8r1zyd02zAPfBleCsMHuJJKD9nQFHLtm7fwKUKhO4zrHdO1hoiDtsN0s00 MOXU9Hzt33ua7tuvnqw4CHUeJTesajVeaMXTdnPg375w1vIe37Pd64wkTkMH+SOGPhONqZ VxKm0lRqjjZER462u9B8xyzTZEKXeIs= X-MC-Unique: 9XMsZIGANm2PKOWLz9DXzA-1 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Subject: [PATCH] docs/devel/migration: start a debugging section Date: Mon, 30 Mar 2020 19:48:52 +0200 Message-Id: <20200330174852.456148-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 216.205.24.74 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , dgilbert@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Explain how to use analyze-migration.py, this may help. Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Dr. David Alan Gilbert --- docs/devel/migration.rst | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/docs/devel/migration.rst b/docs/devel/migration.rst index e88918f7639..2eb08624fc3 100644 --- a/docs/devel/migration.rst +++ b/docs/devel/migration.rst @@ -50,6 +50,26 @@ All these migration protocols use the same infrastructur= e to save/restore state devices. This infrastructure is shared with the savevm/loadvm functionality. =20 +Debugging +=3D=3D=3D=3D=3D=3D=3D=3D=3D + +The migration stream can be analyzed thanks to `scripts/analyze_migration.= py`. + +Example usage: + +.. code-block:: shell + + $ qemu-system-x86_64 + (qemu) migrate "exec:cat > mig" + $ ./scripts/analyze_migration.py -f mig + { + "ram (3)": { + "section sizes": { + "pc.ram": "0x0000000008000000", + ... + +See also ``analyze_migration.py -h`` help for more options. + Common infrastructure =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 --=20 2.26.0.rc2.42.g98cedd0233