On Sun, 6 Dec 2009, Johan Gardell wrote: > But the problems appear when: > vgchange -ay gardin > device-mapper: reload ioctl failed: Invalid argument > device-mapper: reload ioctl failed: Invalid argument > 2 logical volume(s) in volume group "gardin" now active > > Where dmesg shows: > [31936.135588] device-mapper: table: 254:1: linear: dm-linear: Device > lookup failed > [31936.135592] device-mapper: ioctl: error adding target to table > [31936.150572] device-mapper: table: 254:2: linear: dm-linear: Device > lookup failed > [31936.150576] device-mapper: ioctl: error adding target to table > [31940.024525] end_request: I/O error, dev fd0, sector 0 The fd0 error means you need to exclude /dev/fd0 from the vgscan in /etc/lvm/lvm.conf (or wherever Debian puts it). Start to worry if you get I/O errors on sdb or sdc. > And trying to mount the vg: > mount /dev/mapper/gardin-root /mnt/tmp > mount: you must specify the filesystem type You need to show us the output of 'lvs'. (Even if it just spits out an error.) Is there an LV named "root"? I think so, since it would say "special device does not exist" if not. But what kind of filesystem did it have on it? Maybe it is not an auto-detected one, or you need to load the filesystem driver. Does mount report I/O error if it gets one trying to identify the filesystem? -- Stuart D. Gathman <stuart@bmsi.com> Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154 "Confutatis maledictis, flammis acribus addictis" - background song for a Microsoft sponsored "Where do you want to go from here?" commercial. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/