[Qemu-devel] [PATCH] Create the VMDK snapshot from the QEMU monitor.

* [Qemu-devel] [PATCH] Create the VMDK snapshot from the QEMU monitor.
@ 2006-12-26 15:49 Igor Lvovsky
  2006-12-26 17:24 ` Anthony Liguori
  0 siblings, 1 reply; 5+ messages in thread
From: Igor Lvovsky @ 2006-12-26 15:49 UTC (permalink / raw)
  To: qemu-devel


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  Hi,

This patch completes the previous one and allows the snapshot (VMDK style) creation from the QEMU monitor (Ctrl+Alt+2).

 

To clarify, the previous patch implements the snapshot capabilities according to the "Virtual Disk Format 1.0" document.

http://lists.gnu.org/archive/html/qemu-devel/2006-12/msg00311.html

 

Implemented features:

1.	Create snapshot.
2.	CID concept to prevent snapshots chain inconsistency.
3.	Snapshots read/write capabilities.

 

The whole chain (base image and snapshots) created by QEMU can be loaded from the VMware workstation and vice versa.

 

Igor Lvovsky.


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Index: monitor.c
===================================================================
RCS file: /sources/qemu/qemu/monitor.c,v
retrieving revision 1.58
diff -u -r1.58 monitor.c

--- monitor.c	22 Dec 2006 14:11:31 -0000	1.58
+++ monitor.c	26 Dec 2006 15:08:25 -0000
@@ -361,6 +361,51 @@
     eject_device(bs, force);
 }
 
+int vmdk_snapshot_create(BlockDriverState *bs);
+
+static void do_snapshot(const char *hda, const char *hdb,
+                        const char *hdc, const char *hdd)
+{
+
+    if (!strcmp(hda,"hda")) {
+        if (vmdk_snapshot_create(bs_table[0]) == -1)
+            term_printf("hda snapshot fail\n");
+    }
+
+    if (hdb) {
+        if (!strcmp(hdb,"hdb")) {
+            if (bs_table[1]) {
+                if (vmdk_snapshot_create(bs_table[1]) == -1)
+                    term_printf("hdb snapshot fail\n");
+            }else {
+                term_printf("hdb not exist\n");
+            }
+        }
+    }
+
+    if (hdc) {
+        if (!strcmp(hdc,"hdc")) {
+            if (bs_table[2]) {
+                if (vmdk_snapshot_create(bs_table[2]) == -1)
+                    term_printf("hdc snapshot fail\n");
+            }else {
+                term_printf("hdc not exist\n");
+            }
+        }
+    }
+
+    if (hdd) {
+        if (!strcmp(hdd,"hdd")) {
+            if (bs_table[3]) {
+                if (vmdk_snapshot_create(bs_table[3]) == -1)
+                    term_printf("hdd snapshot fail\n");
+            }else {
+                term_printf("hdd not exist\n");
+            }
+        }
+    }
+}
+
 static void do_change(const char *device, const char *filename)
 {
     BlockDriverState *bs;
@@ -1218,6 +1263,8 @@
 #endif
      { "stopcapture", "i", do_stop_capture,
        "capture index", "stop capture" },
+     { "create_snapshot", "ss?s?s?", do_snapshot, 
+       "hda [hdb] [hdc] [hdd]", "create snapshot of one or more images (VMDK format)" },
     { NULL, NULL, }, 
 };
 

^ permalink raw reply	[flat|nested] 5+ messages in thread