From 934d9c23b4c7e31840a895ba4b7e88d6413c81f3 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 28 Oct 2008 17:01:23 +1100 Subject: [PATCH] md: destroy partitions and notify udev when md array is stopped. md arrays are not currently destroyed when they are stopped - they remain in /sys/block. Last time I tried this I tripped over locking too much. A consequence of this is that udev doesn't remove anything from /dev. This is rather ugly. As an interim measure until proper device removal can be achieved, make sure all partitions are removed using the BLKRRPART ioctl, and send a KOBJ_CHANGE when an md array is stopped. Signed-off-by: NeilBrown --- drivers/md/md.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index b4162f6..9abf6ed 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3884,6 +3884,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) if (mode == 0) { mdk_rdev_t *rdev; struct list_head *tmp; + struct block_device *bdev; printk(KERN_INFO "md: %s stopped.\n", mdname(mddev)); @@ -3940,6 +3941,12 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) mddev->degraded = 0; mddev->barriers_work = 0; mddev->safemode = 0; + bdev = bdget_disk(mddev->gendisk, 0); + if (bdev) { + blkdev_ioctl(bdev, 0, BLKRRPART, 0); + bdput(bdev); + } + kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); } else if (mddev->pers) printk(KERN_INFO "md: %s switched to read-only mode.\n", -- 2.7.4