File 0204-sysfs-include-faulty-drive-in-disk-count.patch of Package mdadm.7989

From fe05dc43d81e0c91cc84498e7229008748986b71 Mon Sep 17 00:00:00 2001
From: Mariusz Tkaczyk <>
Date: Tue, 7 Nov 2017 16:49:56 +0100
Subject: [PATCH] sysfs: include faulty drive in disk count
Git-commit: fe05dc43d81e0c91cc84498e7229008748986b71
Patch-mainline: mdadm-4.0+
References: bsc#1069165, bsc#1069167, bsc#1068030

When the disk fails, it goes into faulty state first and it is removed
from the array in a while. It gives mdadm monitor a chance to see the disk
has failed and notify an event (e.g. FailSpare). It doesn't work when
sysfs is used to get a number of disks in the array as it skips faulty
disk. ioctl implementation doesn't differentiate between active and
faulty disk. Do the same for sysfs then. It should not matter that number
of disks reported is greater than list of disk structures returned by the
call because the same approach already takes place for offline disks.

Signed-off-by: Mariusz Tkaczyk <>
Signed-off-by: Jes Sorensen <>
Signed-off-by: Coly Li <>

 sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sysfs.c b/sysfs.c
index bf5c8c5..df6fdda 100644
--- a/sysfs.c
+++ b/sysfs.c
@@ -307,6 +307,7 @@ struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options)
 		dev->disk.raid_disk = strtoul(buf, &ep, 10);
 		if (*ep) dev->disk.raid_disk = -1;
+		sra->array.nr_disks++;
 		strcpy(dbase, "block/dev");
 		if (load_sys(fname, buf, sizeof(buf))) {
 			/* assume this is a stale reference to a hot
@@ -315,7 +316,6 @@ struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options)
-		sra->array.nr_disks++;
 		sscanf(buf, "%d:%d", &dev->disk.major, &dev->disk.minor);
 		/* special case check for block devices that can go 'offline' */
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