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augment info migrate with page status 

This patch augments info migrate output with status about:
* ram bytes remaining
* ram bytes transferred
* ram bytes total

This should be enough for management tools to realize
whether or not there is progress in migration. We can
add more information later on, if the need arrives

[v2: fixes bytes_transferred type]

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Glauber Costa 2009-05-21 17:38:01 -04:00 committed by Anthony Liguori
parent ed8b330bcc
commit 9f9e28cda7
3 changed files with 27 additions and 1 deletions
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3
migration.c
View File

@ -109,6 +109,9 @@ void do_info_migrate(Monitor *mon)
switch (s->get_status(s)) {
case MIG_STATE_ACTIVE:
monitor_printf(mon, "active\n");
monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n", ram_bytes_transferred() >> 10);
monitor_printf(mon, "remaining ram: %" PRIu64 " kbytes\n", ram_bytes_remaining() >> 10);
monitor_printf(mon, "total ram: %" PRIu64 " kbytes\n", ram_bytes_total() >> 10);
break;
case MIG_STATE_COMPLETED:
monitor_printf(mon, "completed\n");

4
sysemu.h
View File

@ -28,6 +28,10 @@ void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
void vm_start(void);
void vm_stop(int reason);
uint64_t ram_bytes_remaining(void);
uint64_t ram_bytes_transferred(void);
uint64_t ram_bytes_total(void);
int64_t cpu_get_ticks(void);
void cpu_enable_ticks(void);
void cpu_disable_ticks(void);

21
vl.c
View File

@ -3234,6 +3234,7 @@ static int ram_save_block(QEMUFile *f)
}
static ram_addr_t ram_save_threshold = 10;
static uint64_t bytes_transferred = 0;
static ram_addr_t ram_save_remaining(void)
{
@ -3248,6 +3249,21 @@ static ram_addr_t ram_save_remaining(void)
return count;
}
uint64_t ram_bytes_remaining(void)
{
return ram_save_remaining() * TARGET_PAGE_SIZE;
}
uint64_t ram_bytes_transferred(void)
{
return bytes_transferred;
}
uint64_t ram_bytes_total(void)
{
return last_ram_offset;
}
static int ram_save_live(QEMUFile *f, int stage, void *opaque)
{
ram_addr_t addr;
@ -3269,6 +3285,7 @@ static int ram_save_live(QEMUFile *f, int stage, void *opaque)
int ret;
ret = ram_save_block(f);
bytes_transferred += ret * TARGET_PAGE_SIZE;
if (ret == 0) /* no more blocks */
break;
}
@ -3278,7 +3295,9 @@ static int ram_save_live(QEMUFile *f, int stage, void *opaque)
if (stage == 3) {
/* flush all remaining blocks regardless of rate limiting */
while (ram_save_block(f) != 0);
while (ram_save_block(f) != 0) {
bytes_transferred += TARGET_PAGE_SIZE;
}
cpu_physical_memory_set_dirty_tracking(0);
}