From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx05.extmail.prod.ext.phx2.redhat.com [10.5.110.29]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v0GJqj8q026064 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Mon, 16 Jan 2017 14:52:45 -0500 Received: from mail.cropusainsurance.com (67-60-77-244.cpe.cableone.net [67.60.77.244]) by mx1.redhat.com (Postfix) with ESMTP id 652213DFCC for ; Mon, 16 Jan 2017 19:52:44 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.cropusainsurance.com (Postfix) with ESMTP id 9831648AB12 for ; Mon, 16 Jan 2017 11:46:21 -0800 (PST) Received: from mail.cropusainsurance.com ([127.0.0.1]) by localhost (mail.cropusainsurance.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xt1YrYaCUn7Y for ; Mon, 16 Jan 2017 11:46:20 -0800 (PST) Received: from mail.cropusainsurance.com (mail.cropusainsurance.com [67.60.77.244]) by mail.cropusainsurance.com (Postfix) with ESMTP id 347C248AB0A for ; Mon, 16 Jan 2017 11:46:20 -0800 (PST) Date: Mon, 16 Jan 2017 11:46:20 -0800 (PST) From: Ken Goods Message-ID: <31656092.220.1484595977477.JavaMail.kgoods@Ken-PC> In-Reply-To: <11587299.215.1484595906899.JavaMail.kgoods@Ken-PC> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_219_20429786.1484595977474" Subject: [linux-lvm] multipath_component_detection Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: To: linux-lvm Mailing List ------=_Part_219_20429786.1484595977474 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Hi all, Just a quick question. I've been setting up a (iscsi) LUN and want to create an LVM PV on it. The docs I have read are somewhat conflicted. Some say that the underlying devices should be filtered, however according to comments in lvm.conf it says that if multipath_component_detection is enabled, "LVM2 will ignore devices used as component paths of device-mapper multipath devices". So filtering is no longer necessary with LVM2? I would just try it but this is a live email server and I'd like to keep the downtime to a minimum. Thanks in advance. Ken ------=_Part_219_20429786.1484595977474 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
Hi all,
Just a quick question. I've been setting up a (iscsi) LUN and want to create an LVM PV on it.

The docs I have read are somewhat conflicted. Some say that the underlying devices should be filtered, however according to comments in lvm.conf it says that if multipath_component_detection is enabled, "LVM2 will ignore devices used as component paths of device-mapper multipath devices".

So filtering is no longer necessary with LVM2?

I would just try it but this is a live email server and I'd like to keep the downtime to a minimum.

Thanks in advance.


Ken


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