From: Patrick Caulfield <pcaulfie@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] cluster LVM
Date: Wed, 17 Oct 2007 09:19:32 +0100 [thread overview]
Message-ID: <4715C594.4010406@redhat.com> (raw)
In-Reply-To: <4714C8C6.7060204@cesca.es>
Jordi Prats wrote:
> Hi all,
> I've been googling for a while but I found nothing about the current
> limitations of CLVM. Someone told me that you must use just one logical
> volume for each volume group. Is that true?
No, you can have as many LVs in a VG as you like.
> Anyone could tell me witch are and if exists any risks of loosing data
> by using CLVM given certain configuration? There's anything that it's
> not safe to use, like snapshots, pvmove...?
Snapshots & pvmove are not currently cluster aware. so if you need to snapshot
or move a logical volume it needs to be active on only one node.
If you are sharing data using a filesystem, then you must use a cluster-aware
filesystem if it is to be mounted on more than one node at a time. GFS or ocfs2
are just such filesystems.
--
Patrick
next prev parent reply other threads:[~2007-10-17 8:19 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-16 14:20 [linux-lvm] cluster LVM Jordi Prats
2007-10-17 8:19 ` Patrick Caulfield [this message]
2007-10-17 8:22 ` Bryn M. Reeves
-- strict thread matches above, loose matches on Subject: below --
2002-02-27 5:21 [linux-lvm] Cluster LVM Gitansh Chadha
2002-02-27 5:33 ` Jeff Layton
2002-02-27 5:45 ` Remco Post
2002-02-27 11:19 ` Andreas Dilger
2002-02-27 12:14 ` Ragnar Kjørstad
2002-02-28 4:24 ` Remco Post
2002-02-28 4:59 ` Prashant Kharche
2002-02-28 5:31 ` Joe Thornber
2002-02-28 7:03 ` Prashant Kharche
2002-02-28 8:32 ` Joe Thornber
2002-02-28 9:08 ` Prashant Kharche
2002-02-28 9:43 ` Remco Post
2002-02-28 12:01 ` Joe Thornber
2002-02-28 4:17 ` Remco Post
2002-02-27 8:34 ` tim
2001-03-14 15:22 Jos Visser
2001-03-14 17:10 ` Heinz J. Mauelshagen
2001-03-14 17:07 ` Jeffrey B Layton
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