This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-API] multipath on 'dual-head' configuration

To: xen-api@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-API] multipath on 'dual-head' configuration
From: George Shuklin <george.shuklin@xxxxxxxxx>
Date: Mon, 16 May 2011 20:05:39 +0400
Delivery-date: Mon, 16 May 2011 09:06:36 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:subject:from:to:content-type:date:message-id :mime-version:x-mailer:content-transfer-encoding; bh=l/IZGH3fIit9iaMxBQnNPjFxUulKnXtM7S31Yhd+zKE=; b=fBIPG+TcpaBH0/aT84FkDbn0fTPN3Z/qWGgZY7HESNPPBXQu5t5i5+QNs3pJGqz+5p 1v6W3hSB9xY0R0Im8U4QP5K8ujZUG0vABgZyaxqqHjYIXBXywUC8AfJIPVfXcfeVmIl4 UIuVnS1X1lnVxrnyJ44L1kyhT/yJP1hOAaRjw=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:content-type:date:message-id:mime-version:x-mailer :content-transfer-encoding; b=W7KAmEddnLFvIqZBGQIsp2mrloOpSNYTdvRhgixiFNz/OEFd4zOx7lUPDLzR32jjyZ Qe5pNR3fA/9G3Vraw2ow66q5UQ6gkzyR+sk2gBSZoKz3ydeLeupBIKtUbPyqzmz3BF8B cUAtMmTf3tWlI0HigwGxzO5tAdEYjVSYsnY5Q=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-api-request@lists.xensource.com?subject=help>
List-id: Discussion of API issues surrounding Xen <xen-api.lists.xensource.com>
List-post: <mailto:xen-api@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-api>, <mailto:xen-api-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-api>, <mailto:xen-api-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-api-bounces@xxxxxxxxxxxxxxxxxxx
Good day.

Found I unable to setup multipath (XCP 0.5) with two separate hosts
connecting to same storage device.

Every iscsi target has been sent only it own ip-addresses for target.

>From generic linux machine it looks like:,1 iqn.2011-04.test:test.test,1 iqn.2011-04.test:test.test

Those IP actually belongs to different machines but allow to access the
same block device.

In usual linux I simply add iscsi login process to startup, multipath
script and it joins paths just by identical serial number and IQN.

In XCP I found I need to serve single portal address with all available
paths (IPs) to target. 

Using ISNS is not very good (i do need to build a HA-cluster for that,
and it seems be little overkill).

That's kinda stuck for me.

Here questions:

Can I somehow say XCP 'do discovery targets (paths) from two portals for
single SR?

If I add multipathed device 'by hand' (f.e. by adding iscsi and
multipath processing to startup scripts), can I add it to XCP as
'shared' resource (regardless it seems be 'local' for xapi)?


xen-api mailing list

<Prev in Thread] Current Thread [Next in Thread>