Return-Path: X-Original-To: apmail-cloudstack-users-archive@www.apache.org Delivered-To: apmail-cloudstack-users-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 8A3CB17FEB for ; Tue, 31 Mar 2015 21:03:35 +0000 (UTC) Received: (qmail 17695 invoked by uid 500); 31 Mar 2015 21:03:26 -0000 Delivered-To: apmail-cloudstack-users-archive@cloudstack.apache.org Received: (qmail 17657 invoked by uid 500); 31 Mar 2015 21:03:26 -0000 Mailing-List: contact users-help@cloudstack.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: users@cloudstack.apache.org Delivered-To: mailing list users@cloudstack.apache.org Delivered-To: moderator for users@cloudstack.apache.org Received: (qmail 896 invoked by uid 99); 31 Mar 2015 20:59:49 -0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of sweller@ena.com designates 96.4.1.13 as permitted sender) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ena.com; s=default; t=1427835543; bh=6luJepxWXpi8X9aZWtgFqha7uUQw7S2z9VX705rPwhQ=; h=From:To:Subject:Date:References:In-Reply-To; b=QUCGbglRGJYfCWeNYeGYRH5Y/cIsLB2MeF4Gz15Le/AEVEOSFhozgskbnaW762P+W GsRWMXKW9OwRO+CifQXyYviaVyGzv4mNqDxUYCTiq1Dbtea7tvZZuNchJ0GB/uiwuH /cBuy1j2hEcd3aBNA/xQzBqhukKTQ05v3EpXozXA= From: Simon Weller To: "users@cloudstack.apache.org" , "dev@cloudstack.apache.org" Subject: Re: Cloudstack and KVM clusters, Thread-Topic: Cloudstack and KVM clusters, Thread-Index: AQHQa/J8KI7hr6wCFUO55e/oEfxnqZ03Dcf1 Date: Tue, 31 Mar 2015 20:59:01 +0000 Message-ID: <1427835540201.24664@ena.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [96.4.0.200] authentication-results: cloudstack.apache.org; dkim=none (message not signed) header.d=none; x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BN1PR02MB182; x-forefront-antispam-report: BMV:1;SFV:NSPM;SFS:(10009020)(979002)(6009001)(377454003)(99286002)(2950100001)(2656002)(66066001)(87936001)(86362001)(92566002)(2501003)(106116001)(107886001)(54356999)(76176999)(117636001)(62966003)(15975445007)(36756003)(102836002)(122556002)(2900100001)(46102003)(50986999)(19580395003)(77156002)(40100003)(19580405001)(153953001)(969003)(989001)(999001)(1009001)(1019001);DIR:OUT;SFP:1101;SCL:1;SRVR:BN1PR02MB182;H:BN1PR02MB183.namprd02.prod.outlook.com;FPR:;SPF:None;MLV:ovrnspm;PTR:InfoNoRecords;LANG:en; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(601004)(5002010)(5005006);SRVR:BN1PR02MB182;BCL:0;PCL:0;RULEID:;SRVR:BN1PR02MB182; x-forefront-prvs: 0532BF6DC2 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: ena.com X-MS-Exchange-CrossTenant-originalarrivaltime: 31 Mar 2015 20:59:01.1241 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 6dc38cd4-4d4f-4826-9649-17854289d170 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN1PR02MB182 X-ENA-MailScanner-Information: Please contact helpdesk@ena.com for more information X-ENA-MailScanner-ID: 9CD30148064B.ACE2B X-ENA-MailScanner: No viruses found X-ENA-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-21.199, required 6, autolearn=not spam, BAYES_00 -3.20, BOGOFILTER_GOOD -4.20, CRM114_UNSURE 0.00, DKIM_SIGNED 0.10, DKIM_VALID -0.20, DKIM_VALID_AU -5.20, ENA_MSGID_TRUST -7.20, OS_UNKNOWN -0.10, SPF_HELO_PASS -1.20) X-ENA-MailScanner-From: sweller@ena.com X-ENA-MailScanner-Watermark: 1428440344.36011@sOTB7ii3o6jf35bGqhS5hg X-Virus-Checked: Checked by ClamAV on apache.org Rafael, KVM live migration really relies on whether the underlying shared storage (= and file system) supports the ability to provide data consistency during a = migration. You never ever want a situation where 2 hosts are able to mount= and write to the same volume concurrently. You can live migrate in KVM today using the following underlying file syste= ms/methods: 1. NFS 2. CEPH 3. Clustered Logical Volume Management (CLVM) on top of SAN exposed storage= via iSCSI,FC or FCOE. It's also possible to build your own storage driver and set a LUN to read o= nly on a particular host using your SANs API. Solidfire, Nexenta and Cloudbyte have also added storage drivers more recen= tly that may provide support for live migration, but as I'm not personally = familiar with these storage platforms, I'll leave it up to others to commen= t if they wish. - Si ________________________________________ From: Rafael Weingartner Sent: Tuesday, March 31, 2015 3:36 PM To: users@cloudstack.apache.org; dev@cloudstack.apache.org Subject: Cloudstack and KVM clusters, Hi folks, I was looking a matrix of Cloudstack compatibility matrix at http://pt.slideshare.net/TimMackey/hypervisor-31754727, Slide 25 seemed to show that we cannot have clusters of KVM in CS? Is that true? Is it possible to live migrate VMs between KVM hosts that are not clustered in CS? -- Rafael Weing=E4rtner