diff options
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/block-dirty-bitmap.c | 7 | ||||
| -rw-r--r-- | migration/block.c | 20 | ||||
| -rw-r--r-- | migration/migration.c | 20 | ||||
| -rw-r--r-- | migration/qemu-file.c | 34 | ||||
| -rw-r--r-- | migration/qemu-file.h | 1 | ||||
| -rw-r--r-- | migration/ram.c | 20 | ||||
| -rw-r--r-- | migration/savevm.c | 28 | ||||
| -rw-r--r-- | migration/savevm.h | 10 | ||||
| -rw-r--r-- | migration/trace-events | 5 |
9 files changed, 76 insertions, 69 deletions
diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c index 5a621419d3..fe73aa94b1 100644 --- a/migration/block-dirty-bitmap.c +++ b/migration/block-dirty-bitmap.c @@ -763,9 +763,8 @@ static int dirty_bitmap_save_complete(QEMUFile *f, void *opaque) } static void dirty_bitmap_state_pending(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only) + uint64_t *must_precopy, + uint64_t *can_postcopy) { DBMSaveState *s = &((DBMState *)opaque)->save; SaveBitmapState *dbms; @@ -785,7 +784,7 @@ static void dirty_bitmap_state_pending(void *opaque, trace_dirty_bitmap_state_pending(pending); - *res_postcopy_only += pending; + *can_postcopy += pending; } /* First occurrence of this bitmap. It should be created if doesn't exist */ diff --git a/migration/block.c b/migration/block.c index 29f69025af..426a25bb19 100644 --- a/migration/block.c +++ b/migration/block.c @@ -42,16 +42,6 @@ #define MAX_IO_BUFFERS 512 #define MAX_PARALLEL_IO 16 -/* #define DEBUG_BLK_MIGRATION */ - -#ifdef DEBUG_BLK_MIGRATION -#define DPRINTF(fmt, ...) \ - do { printf("blk_migration: " fmt, ## __VA_ARGS__); } while (0) -#else -#define DPRINTF(fmt, ...) \ - do { } while (0) -#endif - typedef struct BlkMigDevState { /* Written during setup phase. Can be read without a lock. */ BlockBackend *blk; @@ -502,7 +492,7 @@ static int blk_mig_save_bulked_block(QEMUFile *f) block_mig_state.prev_progress = progress; qemu_put_be64(f, (progress << BDRV_SECTOR_BITS) | BLK_MIG_FLAG_PROGRESS); - DPRINTF("Completed %d %%\r", progress); + trace_migration_block_progression(progress); } return ret; @@ -863,10 +853,8 @@ static int block_save_complete(QEMUFile *f, void *opaque) return 0; } -static void block_state_pending(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only) +static void block_state_pending(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { /* Estimate pending number of bytes to send */ uint64_t pending; @@ -887,7 +875,7 @@ static void block_state_pending(void *opaque, trace_migration_block_state_pending(pending); /* We don't do postcopy */ - *res_precopy_only += pending; + *must_precopy += pending; } static int block_load(QEMUFile *f, void *opaque, int version_id) diff --git a/migration/migration.c b/migration/migration.c index 90fca70cb7..ae2025d9d8 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -3863,20 +3863,18 @@ typedef enum { */ static MigIterateState migration_iteration_run(MigrationState *s) { - uint64_t pend_pre, pend_compat, pend_post; + uint64_t must_precopy, can_postcopy; bool in_postcopy = s->state == MIGRATION_STATUS_POSTCOPY_ACTIVE; - qemu_savevm_state_pending_estimate(&pend_pre, &pend_compat, &pend_post); - uint64_t pending_size = pend_pre + pend_compat + pend_post; + qemu_savevm_state_pending_estimate(&must_precopy, &can_postcopy); + uint64_t pending_size = must_precopy + can_postcopy; - trace_migrate_pending_estimate(pending_size, - pend_pre, pend_compat, pend_post); + trace_migrate_pending_estimate(pending_size, must_precopy, can_postcopy); - if (pend_pre + pend_compat <= s->threshold_size) { - qemu_savevm_state_pending_exact(&pend_pre, &pend_compat, &pend_post); - pending_size = pend_pre + pend_compat + pend_post; - trace_migrate_pending_exact(pending_size, - pend_pre, pend_compat, pend_post); + if (must_precopy <= s->threshold_size) { + qemu_savevm_state_pending_exact(&must_precopy, &can_postcopy); + pending_size = must_precopy + can_postcopy; + trace_migrate_pending_exact(pending_size, must_precopy, can_postcopy); } if (!pending_size || pending_size < s->threshold_size) { @@ -3886,7 +3884,7 @@ static MigIterateState migration_iteration_run(MigrationState *s) } /* Still a significant amount to transfer */ - if (!in_postcopy && pend_pre <= s->threshold_size && + if (!in_postcopy && must_precopy <= s->threshold_size && qatomic_read(&s->start_postcopy)) { if (postcopy_start(s)) { error_report("%s: postcopy failed to start", __func__); diff --git a/migration/qemu-file.c b/migration/qemu-file.c index 2d5f74ffc2..102ab3b439 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -940,3 +940,37 @@ QIOChannel *qemu_file_get_ioc(QEMUFile *file) { return file->ioc; } + +/* + * Read size bytes from QEMUFile f and write them to fd. + */ +int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size) +{ + while (size) { + size_t pending = f->buf_size - f->buf_index; + ssize_t rc; + + if (!pending) { + rc = qemu_fill_buffer(f); + if (rc < 0) { + return rc; + } + if (rc == 0) { + return -EIO; + } + continue; + } + + rc = write(fd, f->buf + f->buf_index, MIN(pending, size)); + if (rc < 0) { + return -errno; + } + if (rc == 0) { + return -EIO; + } + f->buf_index += rc; + size -= rc; + } + + return 0; +} diff --git a/migration/qemu-file.h b/migration/qemu-file.h index fa13d04d78..9d0155a2a1 100644 --- a/migration/qemu-file.h +++ b/migration/qemu-file.h @@ -148,6 +148,7 @@ int qemu_file_shutdown(QEMUFile *f); QEMUFile *qemu_file_get_return_path(QEMUFile *f); void qemu_fflush(QEMUFile *f); void qemu_file_set_blocking(QEMUFile *f, bool block); +int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size); void ram_control_before_iterate(QEMUFile *f, uint64_t flags); void ram_control_after_iterate(QEMUFile *f, uint64_t flags); diff --git a/migration/ram.c b/migration/ram.c index 521912385d..96e8a19a58 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3489,10 +3489,8 @@ static int ram_save_complete(QEMUFile *f, void *opaque) return 0; } -static void ram_state_pending_estimate(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only) +static void ram_state_pending_estimate(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { RAMState **temp = opaque; RAMState *rs = *temp; @@ -3501,16 +3499,14 @@ static void ram_state_pending_estimate(void *opaque, if (migrate_postcopy_ram()) { /* We can do postcopy, and all the data is postcopiable */ - *res_postcopy_only += remaining_size; + *can_postcopy += remaining_size; } else { - *res_precopy_only += remaining_size; + *must_precopy += remaining_size; } } -static void ram_state_pending_exact(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only) +static void ram_state_pending_exact(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { RAMState **temp = opaque; RAMState *rs = *temp; @@ -3528,9 +3524,9 @@ static void ram_state_pending_exact(void *opaque, if (migrate_postcopy_ram()) { /* We can do postcopy, and all the data is postcopiable */ - *res_compatible += remaining_size; + *can_postcopy += remaining_size; } else { - *res_precopy_only += remaining_size; + *must_precopy += remaining_size; } } diff --git a/migration/savevm.c b/migration/savevm.c index b5e6962bb6..aa54a67fda 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1541,15 +1541,13 @@ flush: * the result is split into the amount for units that can and * for units that can't do postcopy. */ -void qemu_savevm_state_pending_estimate(uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only) +void qemu_savevm_state_pending_estimate(uint64_t *must_precopy, + uint64_t *can_postcopy) { SaveStateEntry *se; - *res_precopy_only = 0; - *res_compatible = 0; - *res_postcopy_only = 0; + *must_precopy = 0; + *can_postcopy = 0; QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { if (!se->ops || !se->ops->state_pending_estimate) { @@ -1560,21 +1558,17 @@ void qemu_savevm_state_pending_estimate(uint64_t *res_precopy_only, continue; } } - se->ops->state_pending_estimate(se->opaque, - res_precopy_only, res_compatible, - res_postcopy_only); + se->ops->state_pending_estimate(se->opaque, must_precopy, can_postcopy); } } -void qemu_savevm_state_pending_exact(uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only) +void qemu_savevm_state_pending_exact(uint64_t *must_precopy, + uint64_t *can_postcopy) { SaveStateEntry *se; - *res_precopy_only = 0; - *res_compatible = 0; - *res_postcopy_only = 0; + *must_precopy = 0; + *can_postcopy = 0; QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { if (!se->ops || !se->ops->state_pending_exact) { @@ -1585,9 +1579,7 @@ void qemu_savevm_state_pending_exact(uint64_t *res_precopy_only, continue; } } - se->ops->state_pending_exact(se->opaque, - res_precopy_only, res_compatible, - res_postcopy_only); + se->ops->state_pending_exact(se->opaque, must_precopy, can_postcopy); } } diff --git a/migration/savevm.h b/migration/savevm.h index b1901e68d5..fb636735f0 100644 --- a/migration/savevm.h +++ b/migration/savevm.h @@ -40,12 +40,10 @@ void qemu_savevm_state_cleanup(void); void qemu_savevm_state_complete_postcopy(QEMUFile *f); int qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only, bool inactivate_disks); -void qemu_savevm_state_pending_exact(uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only); -void qemu_savevm_state_pending_estimate(uint64_t *res_precopy_only, - uint64_t *res_compatible, - uint64_t *res_postcopy_only); +void qemu_savevm_state_pending_exact(uint64_t *must_precopy, + uint64_t *can_postcopy); +void qemu_savevm_state_pending_estimate(uint64_t *must_precopy, + uint64_t *can_postcopy); void qemu_savevm_send_ping(QEMUFile *f, uint32_t value); void qemu_savevm_send_open_return_path(QEMUFile *f); int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len); diff --git a/migration/trace-events b/migration/trace-events index 67b65a70ff..92161eeac5 100644 --- a/migration/trace-events +++ b/migration/trace-events @@ -150,8 +150,8 @@ migrate_fd_cleanup(void) "" migrate_fd_error(const char *error_desc) "error=%s" migrate_fd_cancel(void) "" migrate_handle_rp_req_pages(const char *rbname, size_t start, size_t len) "in %s at 0x%zx len 0x%zx" -migrate_pending_exact(uint64_t size, uint64_t pre, uint64_t compat, uint64_t post) "exact pending size %" PRIu64 " (pre = %" PRIu64 " compat=%" PRIu64 " post=%" PRIu64 ")" -migrate_pending_estimate(uint64_t size, uint64_t pre, uint64_t compat, uint64_t post) "estimate pending size %" PRIu64 " (pre = %" PRIu64 " compat=%" PRIu64 " post=%" PRIu64 ")" +migrate_pending_exact(uint64_t size, uint64_t pre, uint64_t post) "exact pending size %" PRIu64 " (pre = %" PRIu64 " post=%" PRIu64 ")" +migrate_pending_estimate(uint64_t size, uint64_t pre, uint64_t post) "estimate pending size %" PRIu64 " (pre = %" PRIu64 " post=%" PRIu64 ")" migrate_send_rp_message(int msg_type, uint16_t len) "%d: len %d" migrate_send_rp_recv_bitmap(char *name, int64_t size) "block '%s' size 0x%"PRIi64 migration_completion_file_err(void) "" @@ -357,6 +357,7 @@ migration_block_flush_blks(const char *action, int submitted, int read_done, int migration_block_save(const char *mig_stage, int submitted, int transferred) "Enter save live %s submitted %d transferred %d" migration_block_save_complete(void) "Block migration completed" migration_block_state_pending(uint64_t pending) "Enter save live pending %" PRIu64 +migration_block_progression(unsigned percent) "Completed %u%%" # page_cache.c migration_pagecache_init(int64_t max_num_items) "Setting cache buckets to %" PRId64 |