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Date: Thu, 10 Feb 2011 20:48:54 -0500
From: Peter Flass <Peter_Flass@Yahoo.com>
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Subject: Re: [linux-lvm] Cannot access logical volume (open count=1)
Reply-To: LVM general discussion and development <linux-lvm@redhat.com>
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To: LVM general discussion and development <linux-lvm@redhat.com>
Cc: Ray Morris <support@bettercgi.com>

I'm learning as I go here, I had never heard of Linux LVM until 
yesterday.  This is a plain vanilla fedora installation.  /dev/sdb2 
contains the root and swap logical volumes.  /dev/sdb1 is home.  kpartx 
-a /dev/sdb creates /dev/sdb1 and /dev/sdb2,
and kpartx -d /dev/sdb deletes both of them.  Neither state made a bit 
of difference as far as accessing 'home'.

Pvscan shows one pv: /dev/sdb2.

BTW, I forgot to mention that I'm booting from the latest Ubuntu rescure 
remix  CD (10.10).  My Fedora CD won't boot - it loops during boot.  
Someone suggested Knoppix, but that loops also.


On 2/10/2011 5:53 PM, Ray Morris wrote:
>    Check whether the LV has a partition on it.
> (fdisk -l /dev/vg*/home)  If so, use kpartx -dvv
> to close it.
>
>> The disk (sdb) has one vg and three lv's on it
>> /proc/mounts shows /dev/sdb1 mounted
>    If /dev/sdb1 is mounted, does that mean there's
> a /dev/sdb2 which is a PV?