Hello! I tried to test multisnapshots but unfortunately got some errors. Here is what I did: 1) Build vanilla linux-2.6.33 kernel using Ubuntu Desktop 9.10 config-2.6.31-19-generic config file with CONFIG_DM_MULTISNAPSHOT=m CONFIG_DM_MULTISNAPSHOT_MIKULAS=m CONFIG_DM_MULTISNAPSHOT_DANIEL=m lines added and with patches from http://people.redhat.com/mpatocka/patches/kernel/new-snapshots/r16/ imposed. 2) reboot with new kernel 3) # modprobe dm-store-mikulas # modprobe dm-multisnapshot # pvcreate /dev/sdb # vgcreate vg1 /dev/sdb # lvcreate --size=500M --name=lv1 vg1 # lvcreate --size=500M --name=lv2 vg1 # dd if=/dev/zero of=/dev/mapper/vg1-lv2 bs=4096 count=1 # echo 0 `blockdev --getsize /dev/mapper/vg1-lv1` multisnapshot \ /dev/mapper/vg1-lv1 /dev/mapper/vg1-lv2 16 0 mikulas 0\ | dmsetup create ms # dmsetup message /dev/mapper/ms 0 create # echo 0 `blockdev --getsize /dev/mapper/vg1-lv1` multisnap-snap \ /dev/mapper/vg1-lv1 0 | dmsetup create ms0 At this point I got the next error: device-mapper: reload ioctl failed: No such file or directory Command failed And these lines appeared in dmesg: [ 6876.506623] device-mapper: table: 252:3: multisnap-snap: Snapshot with this id doesn't exist [ 6876.506629] device-mapper: ioctl: error adding target to table Could you check all the steps I performed right and what could cause those error messages? -- Best wishes, Mikhail Klepachevskyy -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
