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 sent to udev which races against the remove event (KOBJ_REMOVE) from md_free(). So drop sending the change event. A change is likely also required in mdadm as many versions send the change event to udev as well. Signed-off-by: Sebastian Parschauer <sebastian.riemer@xxxxxxxxxxxxxxxx> --- drivers/md/md.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index e55e6cf..464627b 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5671,7 +5671,6 @@ static int do_md_stop(struct mddev *mddev, int mode, export_array(mddev); md_clean(mddev); - kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); if (mddev->hold_active == UNTIL_STOP) mddev->hold_active = 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
