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[Qemu-devel] [PATCH 2/2] set migration max downtime
From: |
Glauber Costa |
Subject: |
[Qemu-devel] [PATCH 2/2] set migration max downtime |
Date: |
Thu, 21 May 2009 18:49:34 -0400 |
provide a monitor command to allow one to set the maximum
downtime he is willing to suffer during migration, in miliseconds.
This parameter will be used by ram_save_live() code to determine
a safe moment to enter stage 3
Signed-off-by: Glauber Costa <address@hidden>
---
migration.c | 5 +++++
migration.h | 2 ++
monitor.c | 2 ++
3 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/migration.c b/migration.c
index 4036e64..b303a2f 100644
--- a/migration.c
+++ b/migration.c
@@ -114,6 +114,11 @@ int64_t migrate_max_downtime(void)
return max_downtime;
}
+void do_migrate_set_downtime(Monitor *mon, uint32_t value)
+{
+ max_downtime = (int64_t)value * 1000000LL;
+}
+
void do_info_migrate(Monitor *mon)
{
MigrationState *s = current_migration;
diff --git a/migration.h b/migration.h
index b0637ba..505668f 100644
--- a/migration.h
+++ b/migration.h
@@ -57,6 +57,8 @@ void do_migrate_set_speed(Monitor *mon, const char *value);
int64_t migrate_max_downtime(void);
+void do_migrate_set_downtime(Monitor *mon, uint32_t value);
+
void do_info_migrate(Monitor *mon);
int exec_start_incoming_migration(const char *host_port);
diff --git a/monitor.c b/monitor.c
index 0f38c71..291281d 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1744,6 +1744,8 @@ static const mon_cmd_t mon_cmds[] = {
"", "cancel the current VM migration" },
{ "migrate_set_speed", "s", do_migrate_set_speed,
"value", "set maximum speed (in bytes) for migrations" },
+ { "migrate_set_downtime", "i", do_migrate_set_downtime,
+ "value", "set maximum tolerated downtime (in miliseconds) for
migrations" },
#if defined(TARGET_I386)
{ "drive_add", "ss", drive_hot_add, "pci_addr=[[<domain>:]<bus>:]<slot>\n"
"[file=file][,if=type][,bus=n]\n"
--
1.5.6.6
- [Qemu-devel] [PATCH 0/2] Transfer of funds, Glauber Costa, 2009/05/21
- [Qemu-devel] [PATCH 1/2] add non-arbitrary migration stop condition, Glauber Costa, 2009/05/21
- [Qemu-devel] [PATCH 2/2] set migration max downtime,
Glauber Costa <=
- Re: [Qemu-devel] [PATCH 2/2] set migration max downtime, Anthony Liguori, 2009/05/21
- Re: [Qemu-devel] [PATCH 2/2] set migration max downtime, Avi Kivity, 2009/05/24
- Re: [Qemu-devel] [PATCH 2/2] set migration max downtime, Anthony Liguori, 2009/05/24
- Re: [Qemu-devel] [PATCH 2/2] set migration max downtime, Avi Kivity, 2009/05/24
- Re: [Qemu-devel] [PATCH 2/2] set migration max downtime, M. Warner Losh, 2009/05/24
Re: [Qemu-devel] [PATCH 1/2] add non-arbitrary migration stop condition, Anthony Liguori, 2009/05/21