iSCSI as PV for KVM Host LVMDirect connetion as pool <pool type='iscsi'> <name>iscsi1</name> <source> <host name='192.168.1.10'/> <device path='iqn.xxxxx'/> </source> <target> <path>/dev/disk/by-path</path> </target> </pool> I prefer iSCSI as backing storage for LVM
# fdisk -l /dev/sdc ... Device Boot Start End Blocks Id System /dev/sdc1 2048 4194303 2096128 8e Linux LVM
# pvdisplay -m --- Physical volume --- PV Name /dev/sdc1 VG Name iscsi1vg PV Size 2.00 GiB / not usable 3.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 511 Free PE 0 Allocated PE 511 ... --- Physical Segments --- Physical extent 0 to 510: Logical volume /dev/iscsi1vg/tubu1b Logical extents 0 to 510 ...
# fdisk -l /dev/vdb Disk /dev/vdb: 2143 MB, 2143289344 bytes ... Device Boot Start End Blocks Id System /dev/vdb1 2048 4186111 2092032 83 Linux # mkfs.ext4 /dev/vdb1 # mount /dev/vdb1 /media/test
Trig a cluster failover (crm node standby node1) during copy1, VM freeze for 2 seconds # pv ubuntu-12.04-server-amd64.iso > /media/test/ubuntu.iso Trig a second cluster failover (crm node standby node2) during copy2, VM freeze for 2 seconds # pv ubuntu-12.04-server-amd64.iso > /media/test/ubuntu1.iso Verify data integrity diff /media/test/ubuntu.iso /media/test/ubuntu1.iso NOTE: a bug http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=663931 then you need /etc/init.d/udev restart on KVM host if virt-manager timeout VM clone ⇒ |