[dm-devel] how to load dm-multisnapshot [with LVM patch]
Busby
chaimvy at gmail.com
Mon May 24 09:04:41 UTC 2010
Hi All,
I get the patches from:
Linux kernel 2.6.34 patch:
http://people.redhat.com/mpatocka/patches/kernel/new-snapshots/r19/
LVM2-2.02.64 patch:
http://people.redhat.com/msnitzer/patches/multisnap/lvm2/LVM2-2.02.64/
but when I used it, the segment type can not find, can anyone help me?
[root at new-host-34 ~]# pvcreate /dev/sd[bcdef]
[root at new-host-34 ~]# vgcreate vg00 /dev/sd[bcdef]
[root at new-host-34 ~]# lvcreate -L 100G -n lv_test /dev/vg00
[root at new-host-34 ~]# lvcreate -L 200G -c 256 --sharedstore mikulas -s
/dev/vg00/lv_test
*WARNING: Unrecognised segment type multisnapshot*
* Cannot update volume group vg00 with unknown segments in it!*
[root at new-host-34 ~]# lvscan
ACTIVE '/dev/vg00/lv_test' [100.00 GiB] inherit
inactive '/dev/vg00/lv_test-shared' [200.00 GiB] inherit
[root at new-host-34 ~]# lvcreate -s -n lv_test_ss1 /dev/vg00/lv_test
*Unable to create new logical volume with no extents*
The dm modules in the system:
[root at new-host-34 LVM2.2.02.64]# lsmod |grep dm
dm_snapshot 25583 0
dm_store_daniel 11304 0
dm_store_mikulas 43265 0
dm_multisnapshot 20276 2 dm_store_daniel,dm_store_mikulas
dm_mirror 11564 0
dm_multipath 14594 0
scsi_dh 5480 1 dm_multipath
dm_region_hash 8233 1 dm_mirror
dm_log 8158 2 dm_mirror,dm_region_hash
dm_mod 58855 9 dm_snapshot,*
dm_store_daniel,dm_store_mikulas,dm_multisnapshot*
,dm_mirror,dm_multipath,dm_log
I just want to use the multisnap by LVM2 command. But I don't know
is there any document about HOW-TO?
Thank you very much.
Best regards,
Busby
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