I'm trying to create snapshot on lvm2 rinning on a fresh Fedora Core 2 linux machine
kernel 2.6.5-1 lvm versions (pvdisplay --version output)
LVM version: 2.00.15 (2004-04-19)
Library version: 1.00.14-ioctl (2004-04-06)
Driver version: 4.1.0
I did the followings:
-- snip --
pvcreate /dev/sdb
vgcreate extdisk /dev/sdb
lvcreate -L500g -npart1 extdisk
mke2fs -j /dev/extdisk/part1
-- snap --
till here everything was fine - I could mount the partition and use it w/o any problem...
then I unmounted the partition and tried to create a snapshot using this syntax :
lvcreate -L50g -s -n userssnap /dev/extdisk/part1
then I got this:
device-mapper ioctl cmd 9 failed: Invalid argument
Couldn't load device 'extdisk-userssnap'.
Problem reactivating origin part1
and then I could not mount the partiton again (the mount command just hang..)
here is my lvdisplay output:
-- snip --
--- Logical volume ---
LV Name /dev/extdisk/part1
VG Name extdisk
LV UUID NNuptN-60Hx-B403-c1uc-FVp6-Kr03-AqJ8CE
LV Write Access read/write
LV snapshot status source of
/dev/extdisk/userssnap [INACTIVE]
LV Status suspended
# open 0
LV Size 500.00 GB
Current LE 128000
Segments 1
Allocation next free (default)
Read ahead sectors 0
Block device 253:1--- Logical volume --- LV Name /dev/extdisk/userssnap VG Name extdisk LV UUID gU4N1Y-0CWf-F6Oo-fRuZ-EpAX-fRFg-pgtAn4 LV Write Access read/write LV snapshot status INACTIVE destination for /dev/extdisk/part1 LV Status available # open 0 LV Size 500.00 GB Current LE 128000 Segments 1 Snapshot chunk size 8.00 KB Allocated to snapshot 100.00% Allocation next free (default) Read ahead sectors 0 Block device 253:4 -- snap --
any idea how to debug it / how to create a snapshot ??
thanks
--Yedidia Klein Jerusalem College of Technology Computing Center
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