On Wed, 26 May 2010, Busby wrote: > Hi, > I have debug the lvm2.02.64 (with the shared-snapshot patches). > In the last email I mentioned the 'Cannot update volume group vg00 with > unknown segments in it!' > The debug mesg: " vg_has_unknown_segments function: snapshot0 has > unknown seg." > I don't know when the snapshot0 has been created?why its segtype > unkown? > Hope for your help. > Thank you. > > Best regards, > Busby Hi I think that you didn't run aclocal and autoconf before ./configure and make. So the multisnapshot module wasn't compiled in. Do make distclean, then aclocal, autoconf, ./configure, make Mikulas > 在 2010年5月24日 下午5:04，Busby <chaimvy@xxxxxxxxx>写道： > > > 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@new-host-34 ~]# pvcreate /dev/sd[bcdef] > > > > [root@new-host-34 ~]# vgcreate vg00 /dev/sd[bcdef] > > > > [root@new-host-34 ~]# lvcreate -L 100G -n lv_test /dev/vg00 > > > > [root@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@new-host-34 ~]# lvscan > > > > ACTIVE '/dev/vg00/lv_test' [100.00 GiB] inherit > > > > inactive '/dev/vg00/lv_test-shared' [200.00 GiB] inherit > > > > [root@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@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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