Migration without --p2p works just fine, ie. the below works:
$ virsh migrate --verbose --copy-storage-all \
--live cvm1 qemu+ssh://kashyapc@devstack3/system
Migration: [100 %]
Result:
- On the source host, the guest is shut off
- On the destination host, the guest is live migratied successfully
Migration with "--p2p" fails, a simple test below:
First, I should note, I didn't modify any settings in
/etc/libvirt/libvirtd.conf on both source and destination hosts, except for
libvirt logging filters.
(0) On source and destination hosts, SSH keys are setup so that passwordless
auth works:
$ ssh-keygen -t
$ eval `ssh-agent`
$ ssh-add .ssh/id_rsa
$ ssh-copy-id root@devstack3
(1) Check if the connection to the remote host works w/o a prompt for
user credentials (the below works as user and root):
$ virsh -c qemu+ssh://kashyapc@devstack3/system
Welcome to virsh, the virtualization interactive terminal.
Type: 'help' for help with commands
'quit' to quit
virsh #
(2) Perform peer to peer live migration (as root):
$ virsh migrate --verbose --p2p --copy-storage-all \
--live cvm1 qemu+ssh://kashyapc@devstack3/system
error: operation failed: Failed to connect to remote libvirt URI
qemu+ssh://kashyapc@devstack3/system: Cannot recv data: Permission denied,
please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).:
Connection reset by peer
>From libvirtd debug log:
[. . .]
2015-04-03 06:04:16.221+0000: 31009: debug : virCommandRunAsync:2408 : About to
run LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin ssh -l
kashyapc devstack3 sh -c ''\''if '\
''nc'\'' -q 2>&1 | grep "requires an argument" >/dev/null 2>&1; then
ARG=-q0;else ARG=;fi;'\''nc'\'' $ARG -U /var/run/libvirt/libvirt-sock'\'''
2015-04-03 06:04:16.223+0000: 31009: debug : virCommandRunAsync:2411 : Command
result 0, with PID 11204
2015-04-03 06:04:16.300+0000: 31009: error : virNetSocketReadWire:1564 : Cannot
recv data: Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).:
Connection reset by peer
2015-04-03 06:04:16.300+0000: 31009: debug : do_open:1194 : driver 6 remote
returned ERROR
2015-04-03 06:04:16.300+0000: 31009: debug : qemuDomainObjExitRemote:1695 :
Exited remote (vm=0x7f727c005f80 name=cvm1)
2015-04-03 06:04:16.300+0000: 31009: error : doPeer2PeerMigrate:4711 :
operation failed: Failed to connect to remote libvirt URI
qemu+ssh://kashyapc@devstack3/system: Cannot recv data: Permission denied,
please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).:
Connection reset by peer
2015-04-03 06:04:16.300+0000: 31009: debug :
qemuMigrationRestoreDomainState:1429 : driver=0x7f728c160980,
vm=0x7f727c005f80, pre-mig-state=1, state=1
2015-04-03 06:04:16.300+0000: 31009: debug : qemuDomainObjEndAsyncJob:1497 :
Stopping async job: migration out (vm=0x7f727c005f80 name=cvm1)
2015-04-03 06:04:16.301+0000: 31007: debug : virProcessAbort:167 : aborting
child process 11204
2015-04-03 06:04:16.301+0000: 31007: debug : virProcessAbort:175 : trying
SIGTERM to child process 11204
[. . .]
What else am I missing?
--
/kashyap
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