Hello. I''m try new xen-4.2.2 and have problem with migration. I''m using qemu-xen-traditional. On first node aafter run xl migrate dom dst i have errors in xl dmesg like: (XEN) event_channel.c:287:d4 EVTCHNOP failure: error -17 (XEN) event_channel.c:287:d3 EVTCHNOP failure: error -17 (XEN) event_channel.c:287:d5 EVTCHNOP failure: error -17 (XEN) event_channel.c:287:d6 EVTCHNOP failure: error -17 (XEN) event_channel.c:287:d8 EVTCHNOP failure: error -17 (4,5,6,8) id of my domains On second (target) node i dont have any messages. xl migrate command says: migration target: Ready to receive domain. Saving to migration stream new xl format (info 0x0/0x0/546) Loading new save file <incoming migration stream> (new xl fmt info 0x0/0x0/546) Savefile contains xl domain config xc: Saving memory: iter 0 (last sent 0 skipped 0): 0/2097152 0% xc: Saving memory: iter 0 (last sent 0 skipped 0): 105587/2097152 5% xc: Saving memory: iter 0 (last sent 0 skipped 0): 2097152/2097152 100% xc: Saving memory: iter 1 (last sent 196164 skipped 444): 0/2097152 0% xc: Saving memory: iter 1 (last sent 196164 skipped 444): 2097152/2097152 100% xc: Saving memory: iter 2 (last sent 504 skipped 0): 0/2097152 0% xc: Saving memory: iter 2 (last sent 504 skipped 0): 2097152/2097152 100% xc: Saving memory: iter 3 (last sent 0 skipped 0): 0/2097152 0% xc: Saving memory: iter 3 (last sent 0 skipped 0): 183398/2097152 8% xc: Saving memory: iter 3 (last sent 0 skipped 0): 2097152/2097152 100% migration receiver stream contained unexpected data instead of ready message (command run was: exec ssh host xl migrate-receive ) migration target: Transfer complete, requesting permission to start domain. libxl: error: libxl_utils.c:363:libxl_read_exactly: file/stream truncated reading GO message from migration stream migration target: Failure, destroying our copy. migration child [1276] not exiting, no longer waiting (exit status will be unreported) Migration failed, resuming at sender. How can i debug this issue and doing live migration? P.S. I''m try to migrate stock centos 5.7 with this config: name=''"21-10888"'' kernel=''"/usr/lib/xen/boot/pv-grub-x86_64.gz"'' vif=''["mac=00:16:3e:00:20:40,ip=62.76.189.66"]'' disk=''["phy:/dev/disk/vbd/21-886,xvda,w"]'' memory=768 maxmem=8192 vcpus=14 maxvcpus=14 cpu_cap=1400 cpu_weight=768 vfb=''["type=vnc,vnclisten=0.0.0.0,vncpasswd=xxxxx"]'' extra=''"(hd0,0)/boot/grub/menu.lst"'' on_restart=''"destroy"'' -- Vasiliy Tolstov, e-mail: v.tolstov@selfip.ru jabber: vase@selfip.ru