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[linux-lvm] RedHat 9 lvcreate snapshot failure.



Running Redhat 9 and trying to create a snapshot for a safer backup of a
logical volume, I get the following error.  Surfing the net didn't turn up
anything.  Any help would be greatly appreciated.

Thanks,

Richard


lvcreate -L20M --snapshot --name mysnap /dev/vg00/homes
lvcreate -- rounding size up to physical extent boundary
lvcreate -- WARNING: the snapshot will be automatically disabled once it
gets full
lvcreate -- INFO: using default snapshot chunk size of 64 KB for
"/dev/vg00/mysnap"
lvcreate -- ERROR "Invalid argument" creating VGDA for "/dev/vg00/mysnap" in
kernel

----
lvdisplay /dev/vg00/homes
--- Logical volume ---
LV Name                /dev/vg00/homes
VG Name                vg00
LV Write Access        read/write
LV Status              available
LV #                   2
# open                 1
LV Size                64 GB
Current LE             4
Allocated LE           4
Allocation             next free
Read ahead sectors     1024
Block device           58:1




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