From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx12.extmail.prod.ext.phx2.redhat.com [10.5.110.17]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p1ALEhHZ022223 for ; Thu, 10 Feb 2011 16:14:43 -0500 Received: from smtp103.prem.mail.ac4.yahoo.com (smtp103.prem.mail.ac4.yahoo.com [76.13.13.42]) by mx1.redhat.com (8.14.4/8.14.4) with SMTP id p1ALEVYt020782 for ; Thu, 10 Feb 2011 16:14:31 -0500 Message-ID: <4D54552E.6070202@Yahoo.com> Date: Thu, 10 Feb 2011 16:14:22 -0500 From: Peter Flass MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [linux-lvm] Cannot access logical volume (open count=1) 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: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@redhat.com 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?