[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

[linux-lvm] LVM2 snapshot creation problem



I am testing LVM2 under the 2.4.20 (vanilla) kernel running on RedHat 8.0. I'm Using device-mapper0.96.07 and the userspace tools LVM2.1.95.13 packages. I applied the device-mapper kernel patches located at http://people.sistina.com/~thornber/patches/2.4-stable/2.4.20/2.4.20-dm-2.tar.bz2.

My problem is that I have not been able to create LV snapshots under LVM2. Here's an example (command and output follow):

===
# /lvm2/sbin/lvcreate -s -L 20g -n snap -v mytestvg/testlv

    Setting chunksize to 16 sectors.
    Finding volume group "mytestvg"
    Creating logical volume snap
    Archiving volume group "mytestvg" metadata.
    Found volume group "mytestvg"
    Loading mytestvg-snap
    Found volume group "mytestvg"
    Zeroing start of logical volume "snap"
    Found volume group "mytestvg"
    Removing mytestvg-snap
    Found volume group "mytestvg"
    Found volume group "mytestvg"
    Found volume group "mytestvg"
    Loading mytestvg-testlv-real
    Loading mytestvg-testlv
    Loading mytestvg-snap-cow
    Loading mytestvg-snap
  device-mapper ioctl cmd 2 failed: Invalid argument
  Couldn't load device 'mytestvg-snap'.
    Creating volume group backup "/etc/lvm/backup/mytestvg"
  Logical volume "snap" created
===

The logical volume is then in an "INACTIVE destination" for my original LV, and cannot be activated. All I can do is "lvremove" it.

Any advice would be most appreciated!

Thanks,
--Gary
--
Gary Windham
Systems Programmer, Principal
The University of Arizona, CCIT




[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]