Package: linux-image-2.6.26-1-openvz-686
Version: 2.6.26-6
Severity: normal
2.6.26-6 supposedly added OpenVZ checkpointing support -- and indeed
the kernel option was enabled and /proc/cpt exists.
I was unable, however, to perform an online migration or even a
checkpoint/restore cycle on both 686 and amd64 kernels on different
machines:
hn:~# vzctl chkpnt 201
Setting up checkpoint...
suspend...
dump...
kill...
VE is unmounted
Checkpointing completed succesfully
hn:~# vzctl restore 201
Restoring VE ...
Starting VE ...
VE is mounted
undump...
Adding IP address(es): <removed>
Setting CPU units: 1000
Configure meminfo: 49152
Error: undump failed: Address already in use
Restoring failed:
Error: open_listening_socket: bind: -98
Error: rst_sockets: open_listening_socket: -98
Error: rst_sockets: -98
VE start failed
Stopping VE ...
VE was stopped
VE is unmounted
hn:~# dmesg |tail -5
[ 1013.441803] CT: 201: started
[ 1014.711018] CPT ERR: cdeae800,201 :open_listening_socket: bind: -98
[ 1014.712378] CPT ERR: cdeae800,201 :rst_sockets:
open_listening_socket: -98
[ 1014.713732] CPT ERR: cdeae800,201 :rst_sockets: -98
[ 1014.725277] CT: 201: stopped
The problem seems to be with bind(), obviously.
I tried checkpointing a container that had all network services shutdown and
it worked. I also tried veth instead of venet with no luck.
I've searched the Internet and upstream's bugzilla with no relevant
results.
I can provide you with access on a kvm guest that has this problem in case
you want to debug it further. Note that I reproduced this on real
machines as well, so this has nothing to do with kvm.
Regards,
Faidon
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