From: Konrad Rzeszutek <konrad@virtualiron.com>
To: lavinp@cs.tcd.ie, device-mapper development <dm-devel@redhat.com>
Subject: Re: Resetting dmsetup open count
Date: Wed, 9 Jul 2008 10:01:32 -0400 [thread overview]
Message-ID: <20080709140132.GA30521@mars.virtualiron.com> (raw)
In-Reply-To: <486BA12D.5010506@cs.tcd.ie>
On Wed, Jul 02, 2008 at 04:39:25PM +0100, Peter Lavin wrote:
> Dear dmsetup mailers,
>
> I am attempting to remove a LVM in CentOS 5. I am getting the following
> message...
>
> Can't remove open logical volume "lvm_name"
>
> I can delete the link... /dev/vg01/lvm_name and also delete the associated
> block... /dev/mapper/vg01-lvm_name.
>
> However, when I attempt to recreate the LVM using the same name (I need to
> use the same name). I get a message that the LVM already exists. I have
> traced this to dmsetup, where running dmsetup info vg01-lvm_name reveals...
>
> [root@tg26 mapper]# dmsetup info vg01-lvm_name
> Name: vg01-lvm_name
> State: ACTIVE
> Tables present: LIVE
> Open count: 1 <------- this appears to be the problem
> Event number: 0
> Major, minor: 253, 63
> Number of targets: 1
> UUID: LVM-CT2Hz7dN6TLC3c8DydQ8nIenwjSmA8CI1yrsTLQy7Ip1Cxetz3 JrdQArvsgBqDsj
>
> I may be able to reset this Open count by rebooting the machine but this is
> the least preferred option. Is there a was of resetting this 'Open count'
> in the dmsetup records without rebooting the system. My dmsetup version is
> pre- 4.8.0 so I cannot use the lvmremove -f option.
Did you use 'vgchange --available ln vg01-lvm_name' before trying to
remove it using 'dmsetup' ?
prev parent reply other threads:[~2008-07-09 14:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-02 15:39 Resetting dmsetup open count Peter Lavin
2008-07-09 14:01 ` Konrad Rzeszutek [this message]
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