After diligently following the instructions for installing Xen 3.3 on a fresh Ubuntu 8.10 server, I am unable to create an LVM-based image using xen-create-image. I suspect that I blew it while setting up LVM during the Ubuntu install. I'm prepared to start over if I must...but I would like to understand where/how I went wrong. This is the logfile output of xen-create-image: -------------------- General Information -------------------- Hostname : xen1.landcapital.local Distribution : lenny Partitions : swap 256Mb (swap) / 4Gb (ext3) Image type : full Memory size : 256Mb Kernel path : /boot/vmlinuz-2.6.27-11-server Initrd path : /boot/initrd.img-2.6.27-11-server Networking Information ---------------------- IP Address 1 : 192.168.101.100 [MAC: 00:16:3E:64:99:35] Netmask : 255.255.255.0 Broadcast : 192.168.101.255 Gateway : 192.168.101.1 Insufficient free extents (0) in volume group xen0: 64 required The LVM partition image creation failed to create /dev/xen0/xen1.landcapital.local-swap. aborting =========================== Here is the output of vgdisplay and lvdisplay: ----------------------------------- root@xen0:~# vgdisplay --- Volume group --- VG Name xen0 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 93.13 GB PE Size 4.00 MB Total PE 23842 Alloc PE / Size 23842 / 93.13 GB Free PE / Size 0 / 0 VG UUID lyuc1v-Oet8-f8it-Uzy3-EsIr-J1eG-EdzfvV ------------------------ root@xen0:~# lvdisplay --- Logical volume --- LV Name /dev/xen0/root VG Name xen0 LV UUID tNpKry-aKuo-cmdp-r0x9-vMPp-jQrp-g6Q9Pd LV Write Access read/write LV Status available # open 1 LV Size 89.30 GB Current LE 22861 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 254:0 --- Logical volume --- LV Name /dev/xen0/swap_1 VG Name xen0 LV UUID JbBcGR-1jyk-UcMZ-1QR4-gGEd-ht5W-PmhDWd LV Write Access read/write LV Status available # open 1 LV Size 3.83 GB Current LE 981 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 254:1 ==========================
There's no space left in your volume group xen0 because the volumes root and swap_1 are using all space. Set the system up again, but this time make root smaller (10GB should be enough), so that there's free space in the xen0 VG.
Thank you, Falko! In my newbness I had been confused about using LVM for both dom0 and domU. I found that the easiest path to succeeding was to set up LVM on one physical disk for the Xen host during the initial Ubuntu install, then separately configure a second physical disk for the Xen guests afterwards.
