I'll retest and will share my findings later today (the 2.02.64 patches on my website were refreshed from 2.02.63+ that was very close to the final 2.02.64); but I didn't retest them at that time). But I handed these 2.02.64 patches off to Mikulas and I have to believe he'd have seen this issue when testing his further development. To my knowledge he hasn't. Anyway, we'll see, but I've seen similar errors when I've created a shared cow LV using a sandbox lvm2 build (not installed to the system). And then the system's lvm2 didn't have multisnapshot support. In that situation you'll see the same type of unknown segment errors when running the system's lvm2 commands. Mike On Tue, May 25 2010 at 11:52pm -0400, Busby <chaimvy@xxxxxxxxx> 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 > > 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 > > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
