'qemuMigrationCookieBlockDirtyBitmapsMatchDisks' maps the bitmaps from
the migration cookie to actual disk objects definition pointers.
'qemuMigrationCookieBlockDirtyBitmapsToParams' converts the bitmap
definitions from the migration cookie into parameters for the
'block-bitmap-mapping' migration parameter.
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
src/qemu/qemu_migration_cookie.c | 115 +++++++++++++++++++++++++++++++
src/qemu/qemu_migration_cookie.h | 7 ++
2 files changed, 122 insertions(+)
diff --git a/src/qemu/qemu_migration_cookie.c b/src/qemu/qemu_migration_cookie.c
index 94ba9c83d0..ffb7533b6a 100644
--- a/src/qemu/qemu_migration_cookie.c
+++ b/src/qemu/qemu_migration_cookie.c
@@ -1568,3 +1568,118 @@ qemuMigrationCookieParse(virQEMUDriverPtr driver,
return g_steal_pointer(&mig);
}
+
+
+/**
+ * qemuMigrationCookieBlockDirtyBitmapsMatchDisks:
+ * @def: domain definition
+ * @disks: list of qemuMigrationBlockDirtyBitmapsDiskPtr
+ *
+ * Matches all of the @disks to the actual domain disk definition objects
+ * by looking up the target.
+ */
+int
+qemuMigrationCookieBlockDirtyBitmapsMatchDisks(virDomainDefPtr def,
+ GSList *disks)
+{
+ GSList *next;
+
+ for (next = disks; next; next = next->next) {
+ qemuMigrationBlockDirtyBitmapsDiskPtr disk = next->data;
+
+ if (!(disk->disk = virDomainDiskByTarget(def, disk->target))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Can't find disk '%s' in domain definition"),
+ disk->target);
+ return -1;
+ }
+
+ disk->nodename = disk->disk->src->nodeformat;
+ }
+
+ return 0;
+}
+
+
+/**
+ * qemuMigrationCookieBlockDirtyBitmapsToParams:
+ * @disks: list of qemuMigrationBlockDirtyBitmapsDisk
+ * @mapping: filled with resulting mapping
+ *
+ * Converts @disks into the arguments for 'block-bitmap-mapping' migration
+ * parameter.
+ */
+int
+qemuMigrationCookieBlockDirtyBitmapsToParams(GSList *disks,
+ virJSONValuePtr *mapping)
+{
+ g_autoptr(virJSONValue) map = virJSONValueNewArray();
+ bool hasDisks = false;
+ GSList *nextdisk;
+
+ for (nextdisk = disks; nextdisk; nextdisk = nextdisk->next) {
+ qemuMigrationBlockDirtyBitmapsDiskPtr disk = nextdisk->data;
+ g_autoptr(virJSONValue) jsondisk = NULL;
+ g_autoptr(virJSONValue) jsonbitmaps = virJSONValueNewArray();
+ bool hasBitmaps = false;
+ GSList *nextbitmap;
+
+ if (disk->skip || !disk->bitmaps)
+ continue;
+
+ for (nextbitmap = disk->bitmaps; nextbitmap; nextbitmap = nextbitmap->next) {
+ qemuMigrationBlockDirtyBitmapsDiskBitmapPtr bitmap = nextbitmap->data;
+ g_autoptr(virJSONValue) jsonbitmap = NULL;
+ g_autoptr(virJSONValue) transform = NULL;
+ const char *bitmapname = bitmap->sourcebitmap;
+
+ if (bitmap->skip)
+ continue;
+
+ /* if there isn't an override, use the real name */
+ if (!bitmapname)
+ bitmapname = bitmap->bitmapname;
+
+ if (bitmap->persistent == VIR_TRISTATE_BOOL_YES) {
+ if (virJSONValueObjectCreate(&transform,
+ "b:persistent", true, NULL) < 0)
+ return -1;
+ }
+
+ if (virJSONValueObjectCreate(&jsonbitmap,
+ "s:name", bitmapname,
+ "s:alias", bitmap->alias,
+ "A:transform", &transform,
+ NULL) < 0)
+ return -1;
+
+ if (virJSONValueArrayAppend(jsonbitmaps, jsonbitmap) < 0)
+ return -1;
+
+ jsonbitmap = NULL;
+ hasBitmaps = true;
+ }
+
+ if (!hasBitmaps)
+ continue;
+
+ if (virJSONValueObjectCreate(&jsondisk,
+ "s:node-name", disk->nodename,
+ "s:alias", disk->target,
+ "a:bitmaps", &jsonbitmaps,
+ NULL) < 0)
+ return -1;
+
+ if (virJSONValueArrayAppend(map, jsondisk) < 0)
+ return -1;
+
+ jsondisk = NULL;
+ hasDisks = true;
+ }
+
+ if (!hasDisks)
+ return 0;
+
+ *mapping = g_steal_pointer(&map);
+ return 0;
+}
diff --git a/src/qemu/qemu_migration_cookie.h b/src/qemu/qemu_migration_cookie.h
index 8636f955da..f8393e0ce0 100644
--- a/src/qemu/qemu_migration_cookie.h
+++ b/src/qemu/qemu_migration_cookie.h
@@ -226,3 +226,10 @@ qemuMigrationCookieXMLFormat(virQEMUDriverPtr driver,
virQEMUCapsPtr qemuCaps,
virBufferPtr buf,
qemuMigrationCookiePtr mig);
+
+int qemuMigrationCookieBlockDirtyBitmapsMatchDisks(virDomainDefPtr def,
+ GSList *disks);
+
+int
+qemuMigrationCookieBlockDirtyBitmapsToParams(GSList *disks,
+ virJSONValuePtr *mapping);
--
2.29.2
