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Commit | Line | Data |
---|---|---|
2cb7cef9 BS |
1 | From c4647292fda0833bebe45be27f04453b736981fa Mon Sep 17 00:00:00 2001 |
2 | From: NeilBrown <neilb@suse.de> | |
3 | Date: Thu, 7 May 2009 12:51:06 +1000 | |
4 | Subject: [PATCH] md: remove rd%d links immediately after stopping an array. | |
5 | ||
6 | md maintains link in sys/mdXX/md/ to identify which device has | |
7 | which role in the array. e.g. | |
8 | rd2 -> dev-sda | |
9 | ||
10 | indicates that the device with role '2' in the array is sda. | |
11 | ||
12 | These links are only present when the array is active. They are | |
13 | created immediately after ->run is called, and so should be removed | |
14 | immediately after ->stop is called. | |
15 | However they are currently removed a little bit later, and it is | |
16 | possible for ->run to be called again, thus adding these links, before | |
17 | they are removed. | |
18 | ||
19 | So move the removal earlier so they are consistently only present when | |
20 | the array is active. | |
21 | ||
22 | Signed-off-by: NeilBrown <neilb@suse.de> | |
23 | --- | |
24 | drivers/md/md.c | 17 ++++++++--------- | |
25 | 1 file changed, 8 insertions(+), 9 deletions(-) | |
26 | ||
27 | --- linux-2.6.27-SLE11_BRANCH.orig/drivers/md/md.c | |
28 | +++ linux-2.6.27-SLE11_BRANCH/drivers/md/md.c | |
29 | @@ -3960,6 +3960,7 @@ static int do_md_stop(mddev_t * mddev, i | |
30 | { | |
31 | int err = 0; | |
32 | struct gendisk *disk = mddev->gendisk; | |
33 | + mdk_rdev_t *rdev; | |
34 | ||
35 | if (atomic_read(&mddev->openers) > is_open) { | |
36 | printk("md: %s still in use.\n",mdname(mddev)); | |
37 | @@ -4002,6 +4003,13 @@ static int do_md_stop(mddev_t * mddev, i | |
38 | /* tell userspace to handle 'inactive' */ | |
39 | sysfs_notify(&mddev->kobj, NULL, "array_state"); | |
40 | ||
41 | + list_for_each_entry(rdev, &mddev->disks, same_set) | |
42 | + if (rdev->raid_disk >= 0) { | |
43 | + char nm[20]; | |
44 | + sprintf(nm, "rd%d", rdev->raid_disk); | |
45 | + sysfs_remove_link(&mddev->kobj, nm); | |
46 | + } | |
47 | + | |
48 | set_capacity(disk, 0); | |
49 | mddev->changed = 1; | |
50 | ||
51 | @@ -4022,8 +4030,6 @@ static int do_md_stop(mddev_t * mddev, i | |
52 | * Free resources if final stop | |
53 | */ | |
54 | if (mode == 0) { | |
55 | - mdk_rdev_t *rdev; | |
56 | - struct list_head *tmp; | |
57 | ||
58 | printk(KERN_INFO "md: %s stopped.\n", mdname(mddev)); | |
59 | ||
60 | @@ -4035,13 +4041,6 @@ static int do_md_stop(mddev_t * mddev, i | |
61 | } | |
62 | mddev->bitmap_offset = 0; | |
63 | ||
64 | - rdev_for_each(rdev, tmp, mddev) | |
65 | - if (rdev->raid_disk >= 0) { | |
66 | - char nm[20]; | |
67 | - sprintf(nm, "rd%d", rdev->raid_disk); | |
68 | - sysfs_remove_link(&mddev->kobj, nm); | |
69 | - } | |
70 | - | |
71 | /* make sure all md_delayed_delete calls have finished */ | |
72 | flush_scheduled_work(); | |
73 |