From cd402151def11c5748065de28d124747df09447b Mon Sep 17 00:00:00 2001 From: Yonit Halperin Date: Mon, 3 Oct 2011 11:21:38 +0200 Subject: server/spice.h: semi-seamless migration interface, RHBZ #738266 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 6e56bea67c5648b0c81990171d4bc0cf1a402043 branch 0.8) Conflicts: server/spice.h --- server/spice-experimental.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'server/spice-experimental.h') diff --git a/server/spice-experimental.h b/server/spice-experimental.h index 482ac44b..6997aa03 100644 --- a/server/spice-experimental.h +++ b/server/spice-experimental.h @@ -29,16 +29,13 @@ void spice_server_net_wire_recv_packet(SpiceNetWireInstance *sin, const uint8_t *pkt, int len); /* spice seamless client migration (broken) */ - enum { SPICE_MIGRATE_CLIENT_NONE = 1, SPICE_MIGRATE_CLIENT_WAITING, SPICE_MIGRATE_CLIENT_READY, }; -int spice_server_migrate_start(SpiceServer *s); int spice_server_migrate_client_state(SpiceServer *s); -int spice_server_migrate_end(SpiceServer *s, int completed); #endif // __SPICE_EXPERIMENTAL_H__ -- cgit