[linux-lvm] LVM2 Error when creating snapshot
Kelly Sauke
ksauke at fastenal.com
Tue Jun 20 20:30:47 UTC 2006
I get this error whenever I create a bunch of snapshots. I have 36 filesystems
in my vg. If I walk through them creating a snapshot on each one, the last 4
fail. They fail with the below error. I did the order backwards and got the
same results so its not dependant on the lv I'm snapshotting, it appears to be
dependant upon the number of snapshots I'm creating.
/usr/sbin/lvcreate -L 1G -p r -s -n save_perpet2-20060619161740
/dev/svg/save_perpet2lv
device-mapper: reload ioctl failed: Cannot allocate memory
Failed to suspend origin save_perpet2lv
It creates the snapshot devices in /dev/mapper.
ls -l /dev/mapper/svg-save_perpet2--20060619161740*
brw-rw---- 1 root disk 253, 159 Jun 20 15:19
/dev/mapper/svg-save_perpet2--20060619161740
brw-rw---- 1 root disk 253, 158 Jun 20 15:19
/dev/mapper/svg-save_perpet2--20060619161740-cow
but it doesn't create any devices in /dev/svg.
It also is available to query with lvdisplay.
lvdisplay /dev/svg/save_perpet2-20060619161740
--- Logical volume ---
LV Name /dev/svg/save_perpet2-20060619161740
VG Name svg
LV UUID oP2nDj-aa7p-dS3Q-4VdH-gk8r-x5C8-Akg78K
LV Write Access read/write
LV Status available
# open 0
LV Size 1.00 GB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:159
I can't do anything with that volume other than remove it though.
I'm running RHEL 4 U 3 with the beta hugemem kernel installed. I installed the
beta kernel as the request of redhat support.
device-mapper-1.02.02-3.0.RHEL4
udev-039-10.12.EL4
kernel-hugemem-2.6.9-39.EL
Any insight would be appreciated.
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