block/backup: add backup_is_cluster_allocated

[qemu.git] / migration / migration.h

diff --git a/migration/migration.h b/migration/migration.h
index f7813f8261f729a42c5fcf08062b32ecb1b5a79f..3e1ea2b5dc80bdf74c20a3595fff4f696d053e16 100644 (file)
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -14,18 +14,35 @@
 #ifndef QEMU_MIGRATION_H
 #define QEMU_MIGRATION_H
 
-#include "qemu-common.h"
+#include "exec/cpu-common.h"
+#include "hw/qdev-core.h"
 #include "qapi/qapi-types-migration.h"
 #include "qemu/thread.h"
-#include "exec/cpu-common.h"
 #include "qemu/coroutine_int.h"
-#include "hw/qdev.h"
 #include "io/channel.h"
+#include "net/announce.h"
 
 struct PostcopyBlocktimeContext;
 
 #define  MIGRATION_RESUME_ACK_VALUE  (1)
 
+/*
+ * 1<<6=64 pages -> 256K chunk when page size is 4K.  This gives us
+ * the benefit that all the chunks are 64 pages aligned then the
+ * bitmaps are always aligned to LONG.
+ */
+#define CLEAR_BITMAP_SHIFT_MIN             6
+/*
+ * 1<<18=256K pages -> 1G chunk when page size is 4K.  This is the
+ * default value to use if no one specified.
+ */
+#define CLEAR_BITMAP_SHIFT_DEFAULT        18
+/*
+ * 1<<31=2G pages -> 8T chunk when page size is 4K.  This should be
+ * big enough and make sure we won't overflow easily.
+ */
+#define CLEAR_BITMAP_SHIFT_MAX            31
+
 /* State for the incoming migration */
 struct MigrationIncomingState {
     QEMUFile *from_src_file;
@@ -36,6 +53,9 @@ struct MigrationIncomingState {
      */
     QemuEvent main_thread_load_event;
 
+    /* For network announces */
+    AnnounceTimer  announce_timer;
+
     size_t         largest_page_size;
     bool           have_fault_thread;
     QemuThread     fault_thread;
@@ -80,6 +100,9 @@ struct MigrationIncomingState {
     bool postcopy_recover_triggered;
     QemuSemaphore postcopy_pause_sem_dst;
     QemuSemaphore postcopy_pause_sem_fault;
+
+    /* List of listening socket addresses  */
+    SocketAddressList *socket_address_list;
 };
 
 MigrationIncomingState *migration_incoming_get_current(void);
@@ -109,8 +132,6 @@ struct MigrationState
     DeviceState parent_obj;
 
     /*< public >*/
-    size_t bytes_xfer;
-    size_t xfer_limit;
     QemuThread thread;
     QEMUBH *cleanup_bh;
     QEMUFile *to_dst_file;
@@ -126,7 +147,13 @@ struct MigrationState
      */
     QemuSemaphore rate_limit_sem;
 
-    /* bytes already send at the beggining of current interation */
+    /* pages already send at the beginning of current iteration */
+    uint64_t iteration_initial_pages;
+
+    /* pages transferred per second */
+    double pages_per_second;
+
+    /* bytes already send at the beginning of current iteration */
     uint64_t iteration_initial_bytes;
     /* time at the start of current iteration */
     int64_t iteration_start_time;
@@ -206,9 +233,6 @@ struct MigrationState
      */
     bool store_global_state;
 
-    /* Whether the VM is only allowing for migratable devices */
-    bool only_migratable;
-
     /* Whether we send QEMU_VM_CONFIGURATION during migration */
     bool send_configuration;
     /* Whether we send section footer during migration */
@@ -224,12 +248,22 @@ struct MigrationState
      * do not trigger spurious decompression errors.
      */
     bool decompress_error_check;
+
+    /*
+     * This decides the size of guest memory chunk that will be used
+     * to track dirty bitmap clearing.  The size of memory chunk will
+     * be GUEST_PAGE_SIZE << N.  Say, N=0 means we will clear dirty
+     * bitmap for each page to send (1<<0=1); N=10 means we will clear
+     * dirty bitmap only once for 1<<10=1K continuous guest pages
+     * (which is in 4M chunk).
+     */
+    uint8_t clear_bitmap_shift;
 };
 
 void migrate_set_state(int *state, int old_state, int new_state);
 
 void migration_fd_process_incoming(QEMUFile *f);
-void migration_ioc_process_incoming(QIOChannel *ioc);
+void migration_ioc_process_incoming(QIOChannel *ioc, Error **errp);
 void migration_incoming_process(void);
 
 bool  migration_has_all_channels(void);
@@ -241,6 +275,8 @@ void migrate_fd_error(MigrationState *s, const Error *error);
 
 void migrate_fd_connect(MigrationState *s, Error *error_in);
 
+bool migration_is_setup_or_active(int state);
+
 void migrate_init(MigrationState *s);
 bool migration_is_blocked(Error **errp);
 /* True if outgoing migration has entered postcopy phase */
@@ -253,12 +289,12 @@ bool migrate_release_ram(void);
 bool migrate_postcopy_ram(void);
 bool migrate_zero_blocks(void);
 bool migrate_dirty_bitmaps(void);
+bool migrate_ignore_shared(void);
 
 bool migrate_auto_converge(void);
 bool migrate_use_multifd(void);
 bool migrate_pause_before_switchover(void);
 int migrate_multifd_channels(void);
-int migrate_multifd_page_count(void);
 
 int migrate_use_xbzrle(void);
 int64_t migrate_xbzrle_cache_size(void);
@@ -269,6 +305,8 @@ bool migrate_use_block_incremental(void);
 int migrate_max_cpu_throttle(void);
 bool migrate_use_return_path(void);
 
+uint64_t ram_get_total_transferred_pages(void);
+
 bool migrate_use_compression(void);
 int migrate_compress_level(void);
 int migrate_compress_threads(void);
@@ -290,9 +328,12 @@ void migrate_send_rp_resume_ack(MigrationIncomingState *mis, uint32_t value);
 
 void dirty_bitmap_mig_before_vm_start(void);
 void init_dirty_bitmap_incoming_migration(void);
+void migrate_add_address(SocketAddress *address);
+
+int foreach_not_ignored_block(RAMBlockIterFunc func, void *opaque);
 
 #define qemu_ram_foreach_block \
-  #warning "Use qemu_ram_foreach_block_migratable in migration code"
+  #warning "Use foreach_not_ignored_block in migration code"
 
 void migration_make_urgent_request(void);
 void migration_consume_urgent_request(void);