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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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cd402151de
semi-seamless migration details:
migration source side
---------------------
(1) spice_server_migrate_connect (*): tell client to link
to the target side - send SPICE_MSG_MAIN_MIGRATE_BEGIN.
This should be called upon client_migrate_info cmd.
client_migrate_info is asynchronous.
(2) Complete spice_server_migrate_connect only when the client has been connected
to the target - wait for SPICE_MSGC_MAIN_MIGRATE_(CONNECTED|CONNECT_ERROR) or a timeout.
(3) spice_server_migrate_end: tell client migration it can switch to the target - send
SPICE_MSG_MAIN_MIGRATE_END.
(4) client cleans up all data related to the connection to the source and switches to the target.
It sends SPICE_MSGC_MAIN_MIGRATE_END.
migration target side
---------------------
(1) the server identifies itself as a migraiton target since the client is linked with (connection_id != 0)
(2) server doesn't start the channels' logic (channel->link) till it receives SPICE_MSGC_MAIN_MIGRATE_END
from the client.
* After migration starts, the target qemu is blocked and cannot accept new spice client
connections. Thus, we trigger the connection to the target upon client_migrate_info
command.
(cherry picked from commit
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|---|---|---|
| client | ||
| common | ||
| python_modules | ||
| server | ||
| tests | ||
| tools | ||
| uncrustify_cfg | ||
| .gitignore | ||
| AUTHORS | ||
| autogen.sh | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| GITVERSION | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| spice1.proto | ||
| spice_codegen.py | ||
| spice-server.pc.in | ||
| spice.proto | ||
| TODO.multiclient | ||
Copyright 2009 Red Hat, Inc. and/or its affiliates. This program and libraries is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see <http://www.gnu.org/licenses/>.