I recently resized an active volume. In preparation for resizing the JFS file system, I unmounted the device and deactivated the volume (I thought I remembered that being necessary), though it appears that I needn't have according to the following instructions from <a href="http://tldp.org/HOWTO/LVM-HOWTO/extendlv.html" target="_blank">http://tldp.org/HOWTO/LVM-HOWTO/extendlv.html</a>: >Just like XFS the JFS file system must be mounted to be resized and the mount-point is specified rather than the device name. You need at least Version 1.0.21 of the jfs-utils to do this. ># mount -o remount,resize /home So I tried to mount the drive but failed, and since then have not been able to activate the volume, resize the filesystem, or do anything remotely useful. I've seen a lot of search results with similar symptoms (device-mapper: reload ioctl failed: Invalid argument), but the solutions have all been situation specific and I'm missing the general principal and the specific application for this situation. I've included some information below, and would appreciate any help/pointers. Thanks, Phil # sudo lvchange -ay -v /dev/vg_share/lv_share Using logical volume(s) on command line Activating logical volume "lv_share" Found volume group "vg_share" Creating vg_share-lv_share Loading vg_share-lv_share table device-mapper: reload ioctl failed: Invalid argument ------------------------------<div id="1eqe" class="ArwC7c ckChnd"> --------------------------------------------- # dmesg | tail [ 181.331807] /dev/vmnet: open called by PID 7002 (vmnet-dhcpd) [ 181.331823] /dev/vmnet: port on hub 1 successfully opened [ 181.336824] /dev/vmnet: open called by PID 7003 (vmnet-dhcpd) [ 181.336840] /dev/vmnet: port on hub 2 successfully opened [ 186.907623] vmnet2: no IPv6 routers present [ 187.107349] vmnet1: no IPv6 routers present [ 187.571087] eth0: no IPv6 routers present [ 595.959391] device-mapper: table: device 8:9 too small for target [ 595.959397] device-mapper: table: 254:7: linear: dm-linear: Device lookup failed [ 595.959401] device-mapper: ioctl: error adding target to table --------------------------------------------------------------------------- # sudo lvm lvs LV VG Attr LSize Origin Snap% Move Log Copy% lv_home vg_fs -wi-ao 14.00G lv_opt vg_fs -wi-ao 6.00G lv_root vg_fs -wi-ao 1.00G lv_usr vg_fs -wi-ao 10.00G lv_var vg_fs -wi-ao 5.00G lv_mythrec1 vg_mythtv -wi-ao 93.13G lv_mythrec2 vg_mythtv2 -wi-ao 143.06G lv_share vg_share -wi-d- 144.00G --------------------------------------------------------------------------- # sudo vgdisplay -v /dev/vg_share Using volume group(s) on command line Finding volume group "vg_share" --- Volume group --- VG Name vg_share System ID Format lvm2 Metadata Areas 3 Metadata Sequence No 41 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 3 Act PV 3 VG Size 186.36 GB PE Size 4.00 MB Total PE 47708 Alloc PE / Size 36864 / 144.00 GB Free PE / Size 10844 / 42.36 GB VG UUID IpRQvV-EBVB-T32r-wuju-AL3M-9PEv-P0i0rz --- Logical volume --- LV Name /dev/vg_share/lv_share VG Name vg_share LV UUID Mm4Vve-9AJc-Pr1u-6RnO-bzLs-m0js-q8bf3m LV Write Access read/write LV Status available # open 0 LV Size 144.00 GB Current LE 36864 Segments 4 Allocation inherit Read ahead sectors 0 Block device 254:7 --- Physical volumes --- PV Name /dev/sda7 PV UUID rWpPc9-wQGk-0V7W-CxO9-RYJo-dcOJ-emUerb PV Status allocatable Total PE / Free PE 11921 / 10844 PV Name /dev/sda8 PV UUID fiKdbI-mGve-GYYi-4Lbn-Q3SR-3Nda-a9qQxW PV Status allocatable Total PE / Free PE 11921 / 0 PV Name /dev/sda9 PV UUID MqYeap-DFiH-eNWM-nhfa-TXcw-5mCi-ClCXEg PV Status allocatable Total PE / Free PE 23866 / 0 --------------------------------------------------------------------------- # sudo pvdisplay -v /dev/sda{7,8,9} Using physical volume(s) on command line --- Physical volume --- PV Name /dev/sda7 VG Name vg_share PV Size 46.57 GB / not usable 1.09 MB Allocatable yes PE Size (KByte) 4096 Total PE 11921 Free PE 10844 Allocated PE 1077 PV UUID rWpPc9-wQGk-0V7W-CxO9-RYJo-dcOJ-emUerb --- Physical volume --- PV Name /dev/sda8 VG Name vg_share PV Size 46.57 GB / not usable 1.09 MB Allocatable yes (but full) PE Size (KByte) 4096 Total PE 11921 Free PE 0 Allocated PE 11921 PV UUID fiKdbI-mGve-GYYi-4Lbn-Q3SR-3Nda-a9qQxW --- Physical volume --- PV Name /dev/sda9 VG Name vg_share PV Size 93.23 GB / not usable 357.00 KB Allocatable yes (but full) PE Size (KByte) 4096 Total PE 23866 Free PE 0 Allocated PE 23866 PV UUID MqYeap-DFiH-eNWM-nhfa-TXcw-5mCi-ClCXEg ---------------------------------------------------------------------------</div>