qemu/migration/file.h

#ifndef QEMU_MIGRATION_FILE_H
#define QEMU_MIGRATION_FILE_H

void file_start_outgoing_migration(MigrationState *s,
                                   const char *filename,
                                   Error **errp);

void file_start_incoming_migration(const char *fname, Error **errp);
#endif
migration: Add support for 'file:' uri for source migration Implement support for a "file:" uri so that a migration can be initiated directly to a file from QEMU. Unlike other migration protocol backends, the 'file' protocol cannot honour non-blocking mode. POSIX file/block storage will always report ready to read/write, regardless of how slow the underlying storage will be at servicing the request. For outgoing migration this limitation is not a serious problem as the migration data transfer always happens in a dedicated thread. It may, however, result in delays in honouring a request to cancel the migration operation. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Fabiano Rosas <farosas@suse.de> 2022-10-28 13:39:01 +03:00			`#ifndef QEMU_MIGRATION_FILE_H`
			`#define QEMU_MIGRATION_FILE_H`

			`void file_start_outgoing_migration(MigrationState *s,`
			`const char *filename,`
			`Error **errp);`

migration: Add support for 'file:' uri for incoming migration This is a counterpart to the 'file:' uri support for source migration, now a file can also serve as the source of an incoming migration. Unlike other migration protocol backends, the 'file' protocol cannot honour non-blocking mode. POSIX file/block storage will always report ready to read/write, regardless of how slow the underlying storage will be at servicing the request. For incoming migration this limitation may result in the main event loop not being fully responsive while loading the VM state. This won't impact the VM since it is not running at this phase, however, it may impact management applications. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Fabiano Rosas <farosas@suse.de> 2022-10-28 13:39:02 +03:00			`void file_start_incoming_migration(const char fname, Error *errp);`
migration: Add support for 'file:' uri for source migration Implement support for a "file:" uri so that a migration can be initiated directly to a file from QEMU. Unlike other migration protocol backends, the 'file' protocol cannot honour non-blocking mode. POSIX file/block storage will always report ready to read/write, regardless of how slow the underlying storage will be at servicing the request. For outgoing migration this limitation is not a serious problem as the migration data transfer always happens in a dedicated thread. It may, however, result in delays in honouring a request to cancel the migration operation. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Fabiano Rosas <farosas@suse.de> 2022-10-28 13:39:01 +03:00			`#endif`