Problem extending an "lv" with an active Snapshot 2.6.2 + udm2 to recreate: # # create a test "lv" # lvcreate -L2G -n test vg01 Logical volume "test" created # # format the "lv" # mkreiserfs /dev/vg01/test [...] # #create a Snapshot for the test "lv" # lvcreate -s -L1G -n Stest /dev/vg01/test Logical volume "Stest" created # mount /dev/vg01/test /mnt # df /mnt Filesystem 1K-blocks Used Available Use% Mounted /dev/mapper/vg01-test 2097084 32840 2064244 2% /mnt # lvextend -L+1G /dev/vg01/test Extending logical volume test to 3.00 GB device-mapper ioctl cmd 9 failed: Invalid argument Couldn't load device 'vg01-Stest'. Problem reactivating test # At this point the system is in strange state, trying to unmount /mnt will lock the "umount" process. Even reboot don't work. # lvdisplay /dev/vg01/{,S}test --- Logical volume --- LV Name /dev/vg01/test VG Name vg01 LV UUID ES5ear-aiRx-LwW9-5ZHn-uqwP-dmJI-O5Oxkk LV Write Access read/write LV snapshot status source of /dev/vg01/Stest [active] LV Status suspended # open 2 LV Size 3.00 GB Current LE 96 Segments 2 Allocation next free (default) Read ahead sectors 0 Block device 254:94 --- Logical volume --- LV Name /dev/vg01/Stest VG Name vg01 LV UUID lmxkER-1rkc-Yzr6-js04-igpc-nAXn-d5SDmF LV Write Access read/write LV snapshot status active destination for /dev/vg01/test LV Status suspended # open 0 LV Size 3.00 GB Current LE 96 Segments 1 Snapshot chunk size 8.00 KB Allocated to snapshot 0.00% Allocation next free (default) Read ahead sectors 0 Block device 254:97 Now the question: Is it supposed to work ? I know for sure that if I delete the snapshot before extending the "lv" it will work like a charm. thanks, Xtian.