From: Guoqing Jiang <gqjiang@suse.com>
Date: Wed, 10 Jun 2015 05:42:09 +0000 (+0800)
Subject: Convert a bitmap=none device to clustered
X-Git-Tag: mdadm-3.4~67^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c25f4d706ac14165fd8d85b169f491f1f14b7cc;p=thirdparty%2Fmdadm.git

Convert a bitmap=none device to clustered

This adds the ability to convert a regular md without bitmap
(--bitmap=none) to a clustered device (--bitmap=clustered).

To convert a device with --bitmap=internal or --bitmap=external,
you have to convert to --bitmap=none and then re-execute the
command with --bitmap=clustered.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/Grow.c b/Grow.c
index 3180be9e..90a7fe95 100644
--- a/Grow.c
+++ b/Grow.c
@@ -330,8 +330,7 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
 			}
 			return 0;
 		}
-		pr_err("Internal bitmap already present on %s\n",
-			devname);
+		pr_err("%s bitmap already present on %s\n", s->bitmap_file, devname);
 		return 1;
 	}
 
@@ -375,7 +374,8 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
 		free(st);
 		return 1;
 	}
-	if (strcmp(s->bitmap_file, "internal") == 0) {
+	if (strcmp(s->bitmap_file, "internal") == 0 ||
+	    strcmp(s->bitmap_file, "clustered") == 0) {
 		int rv;
 		int d;
 		int offset_setable = 0;
@@ -384,6 +384,8 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
 			pr_err("Internal bitmaps not supported with %s metadata\n", st->ss->name);
 			return 1;
 		}
+		st->nodes = c->nodes;
+		st->cluster_name = c->homecluster;
 		mdi = sysfs_read(fd, NULL, GET_BITMAP_LOCATION);
 		if (mdi)
 			offset_setable = 1;
@@ -426,6 +428,8 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
 			rv = sysfs_set_num_signed(mdi, NULL, "bitmap/location",
 						  mdi->bitmap_offset);
 		} else {
+			if (strcmp(s->bitmap_file, "clustered") == 0)
+				array.state |= (1<<MD_SB_CLUSTERED);
 			array.state |= (1<<MD_SB_BITMAP_PRESENT);
 			rv = ioctl(fd, SET_ARRAY_INFO, &array);
 		}