[linux-lvm] Cannot access logical volume (open count=1)

Ray Morris support at bettercgi.com
Thu Feb 10 22:53:25 UTC 2011

  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?
Ray Morris
support at bettercgi.com

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On Thu, 10 Feb 2011 16:14:22 -0500
Peter Flass <Peter_Flass at yahoo.com> wrote:

> I'm truly sorry to bother the developers' list with this question,
> but I've searched and can't find an ansewr that works.  A system
> crash seems to have corrupted something in my fedora system.  I boot
> to a rescue CD and look thru LVM.  The disk (sdb) has one vg and
> three lv's on it. Call the vg vg_xxx, the lv's are lv_boot (ext3, I
> believe), lv_swap (no fs) and lv_home (ext4).  I can't fsck (e2fsck)
> lv_home or do anything else with it, LVM says it's open count=1 where
> the open count of the other two lv's is zero.
> I can't find who has it open.  /proc/mounts shows /dev/sdb1 mounted
> on /media/usb0, when I umount  it (either by mount point or device)
> it disappears, but the lv still shows open, and as a result I am
> unable to do anything with it.  lsof also shows nothing open that
> resembles this lv.  I can inactivate the other two lvs in this vg,
> but not lv_home.
> What can I do to fix this problem?
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

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