[Xen-devel] hvm live migration

[åX_ååliaoliao <noliaoliao@xxxxxxxxx>]

Running a HVM guest over xen (Xen = 4.2.1), there will be network outage during live migration. similar to BUGïhttps://bugzilla.redhat.com/show_bug.cgi?id=719294Â,testing with ping, usually 16 packets lost . I also send the RARP after migration, but it hasn't any effect.How can I solve this question ?

Steps to Reproduce:

1. boot up a HVM guestÂ

2. ping from the guest

3. live migrate the guest

Additional info:

No issue with PV guestÂ

Ping info:

.....

64 bytes fromÂ211.69.198.86: icmp_seq=30 ttl=64 time=0.471 ms

64 bytes fromÂ211.69.198.86: icmp_seq=31 ttl=64 time=0.449 ms

64 bytes fromÂ211.69.198.86: icmp_seq=48 ttl=64 time=0.392 ms

64 bytes fromÂ211.69.198.86: icmp_seq=49 ttl=64 time=0.399 ms

64 bytes fromÂ211.69.198.86: icmp_seq=50 ttl=64 time=0.341 ms

64 bytes fromÂ211.69.198.86: icmp_seq=51 ttl=64 time=0.354 ms

64 bytes fromÂ211.69.198.86: icmp_seq=52 ttl=64 time=0.363 ms

64 bytes fromÂ211.69.198.86: icmp_seq=53 ttl=64 time=0.377 ms

64 bytes fromÂ211.69.198.86: icmp_seq=54 ttl=64 time=0.380 ms

64 bytes fromÂ211.69.198.86: icmp_seq=55 ttl=64 time=0.386 ms

64 bytes fromÂ211.69.198.86: icmp_seq=56 ttl=64 time=0.378 ms

64 bytes fromÂ211.69.198.86: icmp_seq=57 ttl=64 time=0.355 ms

64 bytes fromÂ211.69.198.86: icmp_seq=58 ttl=64 time=0.391 ms

64 bytes fromÂ211.69.198.86: icmp_seq=59 ttl=64 time=0.352 ms

64 bytes fromÂ211.69.198.86: icmp_seq=60 ttl=64 time=0.319 ms

64 bytes fromÂ211.69.198.86: icmp_seq=61 ttl=64 time=0.346 ms

64 bytes fromÂ211.69.198.86: icmp_seq=62 ttl=64 time=0.390 ms

64 bytes fromÂ211.69.198.86: icmp_seq=63 ttl=64 time=0.374 ms

64 bytes fromÂ211.69.198.86: icmp_seq=64 ttl=64 time=0.331 ms

64 bytes fromÂ211.69.198.86: icmp_seq=65 ttl=64 time=0.327 ms

^C

--- 211.69.198.86 ping statistics ---

65 packets transmitted, 49 received, 24% packet loss, time 64310ms

rtt min/avg/max/mdev = 0.224/0.361/0.934/0.148 m

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