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Commit 2213d7c2 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'md/3.17' of git://neil.brown.name/md 

Pull md updates from Neil Brown:
 "Most interesting is that md devices (major == 9) with minor numbers of
  512 or more will no longer be created simply by opening a block device
  file.  They can only be created by writing to

      /sys/module/md_mod/parameters/new_array

  The 'auto-create-on-open' semantic is cumbersome and we need to start
  moving away from it"

* tag 'md/3.17' of git://neil.brown.name/md:
  md: don't allow bitmap file to be added to raid0/linear.
  md/raid0: check for bitmap compatability when changing raid levels.
  md: Recovery speed is wrong
  md: disable probing for md devices 512 and over.
  md/raid1,raid10: always abort recover on write error.
parents c8d6637d d66b1b39

drivers/md/md.c

+7 −6
Original line number Diff line number Diff line
@@ -5961,7 +5961,7 @@ static int set_bitmap_file(struct mddev *mddev, int fd) 
	int err = 0;



	if (mddev->pers) {

		if (!mddev->pers->quiesce)

		if (!mddev->pers->quiesce || !mddev->thread)

			return -EBUSY;

		if (mddev->recovery || mddev->sync_thread)

			return -EBUSY;
@@ -6263,7 +6263,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) 
		rv = update_raid_disks(mddev, info->raid_disks);



	if ((state ^ info->state) & (1<<MD_SB_BITMAP_PRESENT)) {

		if (mddev->pers->quiesce == NULL)

		if (mddev->pers->quiesce == NULL || mddev->thread == NULL)

			return -EINVAL;

		if (mddev->recovery || mddev->sync_thread)

			return -EBUSY;
@@ -7376,7 +7376,7 @@ void md_do_sync(struct md_thread *thread) 
	struct mddev *mddev2;

	unsigned int currspeed = 0,

		 window;

	sector_t max_sectors,j, io_sectors;

	sector_t max_sectors,j, io_sectors, recovery_done;

	unsigned long mark[SYNC_MARKS];

	unsigned long update_time;

	sector_t mark_cnt[SYNC_MARKS];
@@ -7652,7 +7652,8 @@ void md_do_sync(struct md_thread *thread) 
		 */

		cond_resched();



		currspeed = ((unsigned long)(io_sectors-mddev->resync_mark_cnt))/2

		recovery_done = io_sectors - atomic_read(&mddev->recovery_active);

		currspeed = ((unsigned long)(recovery_done - mddev->resync_mark_cnt))/2

			/((jiffies-mddev->resync_mark)/HZ +1) +1;



		if (currspeed > speed_min(mddev)) {
@@ -8592,7 +8593,7 @@ static int __init md_init(void) 
		goto err_mdp;

	mdp_major = ret;



	blk_register_region(MKDEV(MD_MAJOR, 0), 1UL<<MINORBITS, THIS_MODULE,

	blk_register_region(MKDEV(MD_MAJOR, 0), 512, THIS_MODULE,

			    md_probe, NULL, NULL);

	blk_register_region(MKDEV(mdp_major, 0), 1UL<<MINORBITS, THIS_MODULE,

			    md_probe, NULL, NULL);
@@ -8687,7 +8688,7 @@ static __exit void md_exit(void) 
	struct list_head *tmp;

	int delay = 1;



	blk_unregister_region(MKDEV(MD_MAJOR,0), 1U << MINORBITS);

	blk_unregister_region(MKDEV(MD_MAJOR,0), 512);

	blk_unregister_region(MKDEV(mdp_major,0), 1U << MINORBITS);



	unregister_blkdev(MD_MAJOR,"md");

drivers/md/raid0.c

+6 −0
Original line number Diff line number Diff line
@@ -685,6 +685,12 @@ static void *raid0_takeover(struct mddev *mddev) 
	 *  raid10 - assuming we have all necessary active disks

	 *  raid1 - with (N -1) mirror drives faulty

	 */



	if (mddev->bitmap) {

		printk(KERN_ERR "md/raid0: %s: cannot takeover array with bitmap\n",

		       mdname(mddev));

		return ERR_PTR(-EBUSY);

	}

	if (mddev->level == 4)

		return raid0_takeover_raid45(mddev);

drivers/md/raid1.c

+4 −4
Original line number Diff line number Diff line
@@ -1501,12 +1501,12 @@ static void error(struct mddev *mddev, struct md_rdev *rdev) 
		mddev->degraded++;

		set_bit(Faulty, &rdev->flags);

		spin_unlock_irqrestore(&conf->device_lock, flags);

	} else

		set_bit(Faulty, &rdev->flags);

	/*

	 * if recovery is running, make sure it aborts.

	 */

	set_bit(MD_RECOVERY_INTR, &mddev->recovery);

	} else

		set_bit(Faulty, &rdev->flags);

	set_bit(MD_CHANGE_DEVS, &mddev->flags);

	printk(KERN_ALERT

	       "md/raid1:%s: Disk failure on %s, disabling device.\n"

drivers/md/raid10.c

+5 −6
Original line number Diff line number Diff line
@@ -1684,13 +1684,12 @@ static void error(struct mddev *mddev, struct md_rdev *rdev) 
		spin_unlock_irqrestore(&conf->device_lock, flags);

		return;

	}

	if (test_and_clear_bit(In_sync, &rdev->flags)) {

	if (test_and_clear_bit(In_sync, &rdev->flags))

		mddev->degraded++;

	/*

		 * if recovery is running, make sure it aborts.

	 * If recovery is running, make sure it aborts.

	 */

	set_bit(MD_RECOVERY_INTR, &mddev->recovery);

	}

	set_bit(Blocked, &rdev->flags);

	set_bit(Faulty, &rdev->flags);

	set_bit(MD_CHANGE_DEVS, &mddev->flags);