LVM patch to mirror a mirror log

diff -r ed2be334a73a tools/args.h
@@ -52,6 +52,7 @@ arg(config_ARG, '\0', "config", string_a
 arg(config_ARG, '\0', "config", string_arg)
 arg(trustcache_ARG, '\0', "trustcache", NULL)
 arg(ignoremonitoring_ARG, '\0', "ignoremonitoring", NULL)
+arg(mirroredlog_ARG, '\0', "mirroredlog", NULL)
 
 /* Allow some variations */
 arg(resizable_ARG, '\0', "resizable", yes_no_arg)

diff -r ed2be334a73a tools/commands.h
@@ -123,7 +123,7 @@ xx(lvcreate,
    "\t{-l|--extents LogicalExtentsNumber |\n"
    "\t -L|--size LogicalVolumeSize[kKmMgGtTpPeE]}\n"
    "\t[-M|--persistent {y|n}] [--major major] [--minor minor]\n"
-   "\t[-m|--mirrors Mirrors [--nosync] [--corelog]]\n"
+   "\t[-m|--mirrors Mirrors [--nosync] [--corelog] [--mirroredlog]]\n"
    "\t[-n|--name LogicalVolumeName]\n"
    "\t[-p|--permission {r|rw}]\n"
    "\t[-r|--readahead ReadAheadSectors]\n"

@@ -159,7 +159,7 @@ xx(lvcreate,
    corelog_ARG, extents_ARG, major_ARG, minor_ARG, mirrors_ARG, name_ARG,
    nosync_ARG, permission_ARG, persistent_ARG, readahead_ARG, regionsize_ARG,
    size_ARG, snapshot_ARG, stripes_ARG, stripesize_ARG, test_ARG, type_ARG,
-   zero_ARG)
+   zero_ARG, mirroredlog_ARG)
 
 xx(lvdisplay,
    "Display information about a logical volume",

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diff -r ed2be334a73a tools/toollib.h
@@ -95,6 +95,15 @@ int generate_log_name_format(struct volu
 int generate_log_name_format(struct volume_group *vg, const char *lv_name,
                              char *buffer, size_t size);
 
+struct logical_volume *create_mirror_log_create_lv(
+					 struct volume_group *vg,
+					 alloc_policy_t alloc,
+					 const char *lv_name);
+
+int activate_new_mirror_log(struct cmd_context *cmd,
+			    struct logical_volume *log_lv, int in_sync,
+			    struct list *tags);
+
 struct logical_volume *create_mirror_log(struct cmd_context *cmd,
 					 struct volume_group *vg,
 					 struct alloc_handle *ah,

@@ -103,6 +112,15 @@ struct logical_volume *create_mirror_log
 					 int in_sync,
 					 struct list *tags);
 
+struct logical_volume *create_mirror_log_mirrored(struct cmd_context *cmd,
+					 struct volume_group *vg,
+					 struct alloc_handle *ah,
+					 alloc_policy_t alloc,
+					 const char *lv_name,
+					 int in_sync,
+					 struct list *tags,
+					 int mirrors);
+
 int set_lv(struct cmd_context *cmd, struct logical_volume *lv,
 	   uint64_t sectors, int value);