When stopping an MD device, then its device node /dev/mdX may still
exist afterwards or it is recreated by udev. The next open() call
can lead to creation of an inoperable MD device. The reason for
this is that a change event (KOBJ_CHANGE) is announced to udev.
So announce a removal event (KOBJ_REMOVE) to udev instead.
This also overrides the change event sent by the kernel.
Signed-off-by: Sebastian Parschauer <sebastian.riemer@xxxxxxxxxxxxxxxx>
---
Manage.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Manage.c b/Manage.c
index 7e1b94b..bc89764 100644
--- a/Manage.c
+++ b/Manage.c
@@ -494,13 +494,13 @@ done:
goto out;
}
/* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
- * was stopped, so We'll do it here just to be sure. Drop any
- * partitions as well...
+ * was stopped, it should be KOBJ_REMOVE instead, so we set the
+ * remove event here just to be sure. Drop any partitions as well...
*/
if (fd >= 0)
ioctl(fd, BLKRRPART, 0);
if (mdi)
- sysfs_uevent(mdi, "change");
+ sysfs_uevent(mdi, "remove");
if (devnm[0] && use_udev()) {
struct map_ent *mp = map_by_devnm(&map, devnm);
--
1.7.9.5
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