1 From: Gerald Schaefer <geraldsc@de.ibm.com>
2 Subject: dasd: DASD uevents are not sent correctly
3 References: bnc#440610,LTC#49429
5 Symptom: by-id device links are not created
6 Problem: On SLES10 there was an extra patch that would send
7 uevents for a DASD block device when it reached the
8 online state. This code was never upstream and is now
10 Solution: Send change events when device reaches or leaves online
13 Acked-by: John Jolly <jjolly@suse.de>
15 drivers/s390/block/dasd.c | 33 ++++++++++++++++++++++++++++++---
16 1 file changed, 30 insertions(+), 3 deletions(-)
18 Index: linux-sles11/drivers/s390/block/dasd.c
19 ===================================================================
20 --- linux-sles11.orig/drivers/s390/block/dasd.c
21 +++ linux-sles11/drivers/s390/block/dasd.c
22 @@ -335,7 +335,9 @@ static int dasd_state_unfmt_to_basic(str
24 dasd_state_ready_to_online(struct dasd_device * device)
28 + struct gendisk *disk;
29 + struct hd_struct *p;
31 if (device->discipline->ready_to_online) {
32 rc = device->discipline->ready_to_online(device);
33 @@ -343,8 +345,19 @@ dasd_state_ready_to_online(struct dasd_d
36 device->state = DASD_STATE_ONLINE;
38 + if (device->block) {
39 dasd_schedule_block_bh(device->block);
41 + disk = device->block->bdev->bd_disk;
42 + kobject_uevent(&disk->dev.kobj, KOBJ_CHANGE);
43 + /* send uevents for all partitions */
44 + for (i = 1; i < disk->minors; i++) {
45 + p = disk->part[i-1];
46 + if (!p || !p->nr_sects)
48 + kobject_uevent(&p->dev.kobj, KOBJ_CHANGE);
54 @@ -353,7 +366,9 @@ dasd_state_ready_to_online(struct dasd_d
56 static int dasd_state_online_to_ready(struct dasd_device *device)
60 + struct gendisk *disk;
61 + struct hd_struct *p;
63 if (device->discipline->online_to_ready) {
64 rc = device->discipline->online_to_ready(device);
65 @@ -361,6 +376,18 @@ static int dasd_state_online_to_ready(st
68 device->state = DASD_STATE_READY;
70 + /* send uevents for all partitions */
71 + if (device->block) {
72 + disk = device->block->bdev->bd_disk;
73 + for (i = 1; i < disk->minors; i++) {
74 + p = disk->part[i-1];
75 + if (!p || !p->nr_sects)
77 + kobject_uevent(&p->dev.kobj, KOBJ_CHANGE);
79 + kobject_uevent(&disk->dev.kobj, KOBJ_CHANGE);