[lvm-devel] [PATCH 10 of 10] LVM: add redundant log type

[Jonathan Brassow]

Patch name: lvm-add-redundant-log-type.patch

Now it is trivial to add the 'redundant' mirror log.

RFC: Jonathan Brassow <jbrassow at redhat.com>

Index: LVM2/tools/commands.h
===================================================================
--- LVM2.orig/tools/commands.h
+++ LVM2/tools/commands.h
@@ -95,7 +95,7 @@ xx(lvconvert,
    "Change logical volume layout",
    0,
    "lvconvert "
-   "[-m|--mirrors Mirrors [{--mirrorlog {disk|core}|--corelog}]]\n"
+   "[-m|--mirrors Mirrors [{--mirrorlog {disk|core|redundant}|--corelog}]]\n"
    "\t[--repair [--use-policies]]\n"
    "\t[-R|--regionsize MirrorLogRegionSize]\n"
    "\t[--alloc AllocationPolicy]\n"
@@ -139,7 +139,7 @@ xx(lvcreate,
    "\t{-l|--extents LogicalExtentsNumber |\n"
    "\t -L|--size LogicalVolumeSize[bBsSkKmMgGtTpPeE]}\n"
    "\t[-M|--persistent {y|n}] [--major major] [--minor minor]\n"
-   "\t[-m|--mirrors Mirrors [--nosync] [{--mirrorlog {disk|core}|--corelog}]]\n"
+   "\t[-m|--mirrors Mirrors [--nosync] [{--mirrorlog {disk|core|redundant}|--corelog}]]\n"
    "\t[-n|--name LogicalVolumeName]\n"
    "\t[--noudevsync]\n"
    "\t[-p|--permission {r|rw}]\n"
Index: LVM2/tools/lvconvert.c
===================================================================
--- LVM2.orig/tools/lvconvert.c
+++ LVM2/tools/lvconvert.c
@@ -624,7 +624,9 @@ static int _lvconvert_mirrors(struct cmd
 			return 0;
 		}
 
-		if (!strcmp("disk", mirrorlog))
+		if (!strcmp("redundant", mirrorlog))
+			log_count = 2;
+		else if (!strcmp("disk", mirrorlog))
 			log_count = 1;
 		else if (!strcmp("core", mirrorlog))
 			log_count = 0;
Index: LVM2/tools/lvcreate.c
===================================================================
--- LVM2.orig/tools/lvcreate.c
+++ LVM2/tools/lvcreate.c
@@ -342,7 +342,9 @@ static int _read_mirror_params(struct lv
 		return 0;
 	}
 
-	if (!strcmp("disk", mirrorlog))
+	if (!strcmp("redundant", mirrorlog))
+		lp->log_count = 2;
+	else if (!strcmp("disk", mirrorlog))
 		lp->log_count = 1;
 	else if (!strcmp("core", mirrorlog))
 		lp->log_count = 0;