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[Qemu-devel] [PATCH 3/3 v2] Enable migration without shared storage from
From: |
lirans |
Subject: |
[Qemu-devel] [PATCH 3/3 v2] Enable migration without shared storage from the monitor |
Date: |
Thu, 10 Sep 2009 16:57:48 +0300 |
This patch adds the option to activate non-shared storage migration from the
monitor.
The migration command is as follows:
(qemu) migrate -d tcp:0:4444 # for ordinary live migration
(qemu) migrate -d blk tcp:0:4444 # for live migration with complete storage copy
(qemu) migrate -d blk inc tcp:0:4444 # for live migration with incremental
storage copy, storage is cow based.
diff --git a/monitor.c b/monitor.c
index 8d5165c..ea17609 100644
--- a/monitor.c
+++ b/monitor.c
@@ -37,6 +37,7 @@
#include "readline.h"
#include "console.h"
#include "block.h"
+#include "block-migration.h"
#include "audio/audio.h"
#include "disas.h"
#include "balloon.h"
@@ -2507,6 +2508,24 @@ static void monitor_handle_command(Monitor *mon, const
char *cmdline)
goto add_str;
}
}
+
+ if (*typestr == '!') {
+ char flag[4];
+ char * cmd_flag;
+ typestr++;
+ memcpy(flag, typestr, 3);
+ typestr += 3;
+ flag[3] = '\0';
+
+ cmd_flag = strstr(p, flag);
+ if (cmd_flag != p) {
+ /* no optional string: NULL argument */
+ str = NULL;
+ goto add_str;
+ }
+
+ }
+
ret = get_str(buf, sizeof(buf), &p);
if (ret < 0) {
switch(c) {
diff --git a/qemu-monitor.hx b/qemu-monitor.hx
index dea0704..e466774 100644
--- a/qemu-monitor.hx
+++ b/qemu-monitor.hx
@@ -463,8 +463,8 @@ STEXI
Inject an NMI on the given CPU (x86 only).
ETEXI
- { "migrate", "-ds", do_migrate,
- "[-d] uri", "migrate to URI (using -d to not wait for completion)" },
+ { "migrate", "-ds!blks!incs", do_migrate,
+ "[-d] [blk] [inc] uri", "migrate to URI (using -d - to not wait
\n\t\tfor completion,\n\t\t [blk] - for migration without shared
storage,\n\t\t [inc] - for incremental migration if base image is identical)" },
STEXI
@item migrate [-d] @var{uri}
Migrate to @var{uri} (using -d to not wait for completion).
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