From: NeilBrown <neilb@suse.de>
Date: Tue, 14 Apr 2009 02:01:57 +0000 (+1000)
Subject: md: allow setting newly added device to 'in_sync' via sysfs.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6d56e278444bc8323b1bcfcada126b8e4dbba0f4;p=linux-beck.git

md: allow setting newly added device to 'in_sync' via sysfs.

When adding devices to an active array via sysfs, there is currently
no way to mark a device as 'in-sync' which is useful when
incrementally assembling an array.

So add that option.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ed5727c089a9..298731b8e951 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2086,6 +2086,7 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
 	 *  -writemostly - clears write_mostly
 	 *  blocked - sets the Blocked flag
 	 *  -blocked - clears the Blocked flag
+	 *  insync - sets Insync providing device isn't active
 	 */
 	int err = -EINVAL;
 	if (cmd_match(buf, "faulty") && rdev->mddev->pers) {
@@ -2117,6 +2118,9 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
 		set_bit(MD_RECOVERY_NEEDED, &rdev->mddev->recovery);
 		md_wakeup_thread(rdev->mddev->thread);
 
+		err = 0;
+	} else if (cmd_match(buf, "insync") && rdev->raid_disk == -1) {
+		set_bit(In_sync, &rdev->flags);
 		err = 0;
 	}
 	if (!err && rdev->sysfs_state)
@@ -2190,7 +2194,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
 	} else if (rdev->mddev->pers) {
 		mdk_rdev_t *rdev2;
 		/* Activating a spare .. or possibly reactivating
-		 * if we every get bitmaps working here.
+		 * if we ever get bitmaps working here.
 		 */
 
 		if (rdev->raid_disk != -1)