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authoraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2008-11-11 16:46:33 +0000
committeraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2008-11-11 16:46:33 +0000
commit065e281356282f59386272aa50590b566a1809d9 (patch)
tree98f265501e5474327a5138bf9ca38736c15f4b38 /migration.h
parenta74b4d2c23a5da45a5ef9eec18ce00923b6bab15 (diff)
Reintroduce migrate-to-exec: support (Charles Duffy)
KVM's live migration support included support for exec: URLs, allowing system state to be written or received via an arbitrary popen()ed subprocess. This provides a convenient way to pipe state through a compression algorithm or an arbitrary network transport on its way to its destination, and a convenient way to write state to disk; libvirt's qemu driver currently uses migration to exec: targets for this latter purpose. This version of the patch refactors now-common code from migrate-tcp.c into migrate.c. Signed-off-by: Charles Duffy <Charles_Duffy@messageone.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5694 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'migration.h')
-rw-r--r--migration.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/migration.h b/migration.h
index 9947f6a45..953ec704d 100644
--- a/migration.h
+++ b/migration.h
@@ -29,6 +29,22 @@ struct MigrationState
void (*release)(MigrationState *s);
};
+typedef struct FdMigrationState FdMigrationState;
+
+struct FdMigrationState
+{
+ MigrationState mig_state;
+ int64_t bandwidth_limit;
+ QEMUFile *file;
+ int fd;
+ int detach;
+ int state;
+ int (*get_error)(struct FdMigrationState*);
+ int (*close)(struct FdMigrationState*);
+ int (*write)(struct FdMigrationState*, const void *, size_t);
+ void *opaque;
+};
+
void qemu_start_incoming_migration(const char *uri);
void do_migrate(int detach, const char *uri);
@@ -39,11 +55,44 @@ void do_migrate_set_speed(const char *value);
void do_info_migrate(void);
+int exec_start_incoming_migration(const char *host_port);
+
+MigrationState *exec_start_outgoing_migration(const char *host_port,
+ int64_t bandwidth_limit,
+ int detach);
+
int tcp_start_incoming_migration(const char *host_port);
MigrationState *tcp_start_outgoing_migration(const char *host_port,
int64_t bandwidth_limit,
int detach);
+void migrate_fd_error(FdMigrationState *s);
+
+void migrate_fd_cleanup(FdMigrationState *s);
+
+void migrate_fd_put_notify(void *opaque);
+
+ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size);
+
+void migrate_fd_connect(FdMigrationState *s);
+
+void migrate_fd_put_ready(void *opaque);
+
+int migrate_fd_get_status(MigrationState *mig_state);
+
+void migrate_fd_cancel(MigrationState *mig_state);
+
+void migrate_fd_release(MigrationState *mig_state);
+
+void migrate_fd_wait_for_unfreeze(void *opaque);
+
+int migrate_fd_close(void *opaque);
+
+static inline FdMigrationState *migrate_to_fms(MigrationState *mig_state)
+{
+ return container_of(mig_state, FdMigrationState, mig_state);
+}
+
#endif