/* md_cluster_info flags */
#define MD_CLUSTER_WAITING_FOR_NEWDISK 1
+#define MD_CLUSTER_SUSPEND_READ_BALANCING 2
struct md_cluster_info {
kfree(res);
}
-static char *pretty_uuid(char *dest, char *src)
-{
- int i, len = 0;
-
- for (i = 0; i < 16; i++) {
- if (i == 4 || i == 6 || i == 8 || i == 10)
- len += sprintf(dest + len, "-");
- len += sprintf(dest + len, "%02x", (__u8)src[i]);
- }
- return dest;
-}
-
static void add_resync_info(struct mddev *mddev, struct dlm_lock_resource *lockres,
sector_t lo, sector_t hi)
{
static void recover_prep(void *arg)
{
+ struct mddev *mddev = arg;
+ struct md_cluster_info *cinfo = mddev->cluster_info;
+ set_bit(MD_CLUSTER_SUSPEND_READ_BALANCING, &cinfo->state);
}
static void recover_slot(void *arg, struct dlm_slot *slot)
cinfo->slot_number = our_slot;
complete(&cinfo->completion);
+ clear_bit(MD_CLUSTER_SUSPEND_READ_BALANCING, &cinfo->state);
}
static const struct dlm_lockspace_ops md_ls_ops = {
int len;
len = snprintf(disk_uuid, 64, "DEVICE_UUID=");
- pretty_uuid(disk_uuid + len, cmsg->uuid);
+ sprintf(disk_uuid + len, "%pU", cmsg->uuid);
snprintf(raid_slot, 16, "RAID_DISK=%d", cmsg->raid_slot);
pr_info("%s:%d Sending kobject change with %s and %s\n", __func__, __LINE__, disk_uuid, raid_slot);
init_completion(&cinfo->newdisk_completion);
mddev->cluster_info = cinfo;
memset(str, 0, 64);
- pretty_uuid(str, mddev->uuid);
+ sprintf(str, "%pU", mddev->uuid);
ret = dlm_new_lockspace(str, mddev->bitmap_info.cluster_name,
DLM_LSFL_FS, LVB_SIZE,
&md_ls_ops, mddev, &ops_rv, &cinfo->lockspace);
resync_send(mddev, RESYNCING, 0, 0);
}
-static int area_resyncing(struct mddev *mddev, sector_t lo, sector_t hi)
+static int area_resyncing(struct mddev *mddev, int direction,
+ sector_t lo, sector_t hi)
{
struct md_cluster_info *cinfo = mddev->cluster_info;
int ret = 0;
struct suspend_info *s;
+ if ((direction == READ) &&
+ test_bit(MD_CLUSTER_SUSPEND_READ_BALANCING, &cinfo->state))
+ return 1;
+
spin_lock_irq(&cinfo->suspend_lock);
if (list_empty(&cinfo->suspend_list))
goto out;