if (!mddev->raid_disks && list_empty(&mddev->disks)) {
list_del(&mddev->all_mddevs);
blk_put_queue(mddev->queue);
- kfree(mddev);
+ kobject_unregister(&mddev->kobj);
}
spin_unlock(&all_mddevs_lock);
}
*/
int i;
int active=0, working=0,failed=0,spare=0,nr_disks=0;
+ unsigned int fixdesc=0;
rdev->sb_size = MD_SB_BYTES;
sb->disks[0].state = (1<<MD_DISK_REMOVED);
ITERATE_RDEV(mddev,rdev2,tmp) {
mdp_disk_t *d;
+ int desc_nr;
if (rdev2->raid_disk >= 0 && rdev2->in_sync && !rdev2->faulty)
- rdev2->desc_nr = rdev2->raid_disk;
+ desc_nr = rdev2->raid_disk;
else
- rdev2->desc_nr = next_spare++;
+ desc_nr = next_spare++;
+ if (desc_nr != rdev2->desc_nr) {
+ fixdesc |= (1 << desc_nr);
+ rdev2->desc_nr = desc_nr;
+ if (rdev2->raid_disk >= 0) {
+ char nm[20];
+ sprintf(nm, "rd%d", rdev2->raid_disk);
+ sysfs_remove_link(&mddev->kobj, nm);
+ }
+ sysfs_remove_link(&rdev2->kobj, "block");
+ kobject_del(&rdev2->kobj);
+ }
d = &sb->disks[rdev2->desc_nr];
nr_disks++;
d->number = rdev2->desc_nr;
d->major = MAJOR(rdev2->bdev->bd_dev);
d->minor = MINOR(rdev2->bdev->bd_dev);
- if (rdev2->raid_disk >= 0 && rdev->in_sync && !rdev2->faulty)
+ if (rdev2->raid_disk >= 0 && rdev2->in_sync && !rdev2->faulty)
d->raid_disk = rdev2->raid_disk;
else
d->raid_disk = rdev2->desc_nr; /* compatibility */
if (test_bit(WriteMostly, &rdev2->flags))
d->state |= (1<<MD_DISK_WRITEMOSTLY);
}
-
+ if (fixdesc)
+ ITERATE_RDEV(mddev,rdev2,tmp)
+ if (fixdesc & (1<<rdev2->desc_nr)) {
+ snprintf(rdev2->kobj.name, KOBJ_NAME_LEN, "dev%d",
+ rdev2->desc_nr);
+ kobject_add(&rdev2->kobj);
+ sysfs_create_link(&rdev2->kobj,
+ &rdev2->bdev->bd_disk->kobj,
+ "block");
+ if (rdev2->raid_disk >= 0) {
+ char nm[20];
+ sprintf(nm, "rd%d", rdev2->raid_disk);
+ sysfs_create_link(&mddev->kobj,
+ &rdev2->kobj, nm);
+ }
+ }
/* now set the "removed" and "faulty" bits on any missing devices */
for (i=0 ; i < mddev->raid_disks ; i++) {
mdp_disk_t *d = &sb->disks[i];
list_add(&rdev->same_set, &mddev->disks);
rdev->mddev = mddev;
printk(KERN_INFO "md: bind<%s>\n", bdevname(rdev->bdev,b));
+
+ rdev->kobj.k_name = NULL;
+ snprintf(rdev->kobj.name, KOBJ_NAME_LEN, "dev%d", rdev->desc_nr);
+ rdev->kobj.parent = kobject_get(&mddev->kobj);
+ kobject_add(&rdev->kobj);
+
+ sysfs_create_link(&rdev->kobj, &rdev->bdev->bd_disk->kobj, "block");
return 0;
}
list_del_init(&rdev->same_set);
printk(KERN_INFO "md: unbind<%s>\n", bdevname(rdev->bdev,b));
rdev->mddev = NULL;
+ sysfs_remove_link(&rdev->kobj, "block");
+ kobject_del(&rdev->kobj);
}
/*
md_autodetect_dev(rdev->bdev->bd_dev);
#endif
unlock_rdev(rdev);
- kfree(rdev);
+ kobject_put(&rdev->kobj);
}
static void kick_rdev_from_array(mdk_rdev_t * rdev)
}
+struct rdev_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(mdk_rdev_t *, char *);
+ ssize_t (*store)(mdk_rdev_t *, const char *, size_t);
+};
+
+static ssize_t
+rdev_show_state(mdk_rdev_t *rdev, char *page)
+{
+ char *sep = "";
+ int len=0;
+
+ if (rdev->faulty) {
+ len+= sprintf(page+len, "%sfaulty",sep);
+ sep = ",";
+ }
+ if (rdev->in_sync) {
+ len += sprintf(page+len, "%sin_sync",sep);
+ sep = ",";
+ }
+ if (!rdev->faulty && !rdev->in_sync) {
+ len += sprintf(page+len, "%sspare", sep);
+ sep = ",";
+ }
+ return len+sprintf(page+len, "\n");
+}
+
+static struct rdev_sysfs_entry rdev_state = {
+ .attr = {.name = "state", .mode = S_IRUGO },
+ .show = rdev_show_state,
+};
+
+static ssize_t
+rdev_show_super(mdk_rdev_t *rdev, char *page)
+{
+ if (rdev->sb_loaded && rdev->sb_size) {
+ memcpy(page, page_address(rdev->sb_page), rdev->sb_size);
+ return rdev->sb_size;
+ } else
+ return 0;
+}
+static struct rdev_sysfs_entry rdev_super = {
+ .attr = {.name = "super", .mode = S_IRUGO },
+ .show = rdev_show_super,
+};
+static struct attribute *rdev_default_attrs[] = {
+ &rdev_state.attr,
+ &rdev_super.attr,
+ NULL,
+};
+static ssize_t
+rdev_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
+{
+ struct rdev_sysfs_entry *entry = container_of(attr, struct rdev_sysfs_entry, attr);
+ mdk_rdev_t *rdev = container_of(kobj, mdk_rdev_t, kobj);
+
+ if (!entry->show)
+ return -EIO;
+ return entry->show(rdev, page);
+}
+
+static ssize_t
+rdev_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *page, size_t length)
+{
+ struct rdev_sysfs_entry *entry = container_of(attr, struct rdev_sysfs_entry, attr);
+ mdk_rdev_t *rdev = container_of(kobj, mdk_rdev_t, kobj);
+
+ if (!entry->store)
+ return -EIO;
+ return entry->store(rdev, page, length);
+}
+
+static void rdev_free(struct kobject *ko)
+{
+ mdk_rdev_t *rdev = container_of(ko, mdk_rdev_t, kobj);
+ kfree(rdev);
+}
+static struct sysfs_ops rdev_sysfs_ops = {
+ .show = rdev_attr_show,
+ .store = rdev_attr_store,
+};
+static struct kobj_type rdev_ktype = {
+ .release = rdev_free,
+ .sysfs_ops = &rdev_sysfs_ops,
+ .default_attrs = rdev_default_attrs,
+};
+
/*
* Import a device. If 'super_format' >= 0, then sanity check the superblock
*
if (err)
goto abort_free;
+ rdev->kobj.parent = NULL;
+ rdev->kobj.ktype = &rdev_ktype;
+ kobject_init(&rdev->kobj);
+
rdev->desc_nr = -1;
rdev->faulty = 0;
rdev->in_sync = 0;
}
+struct md_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(mddev_t *, char *);
+ ssize_t (*store)(mddev_t *, const char *, size_t);
+};
+
+static ssize_t
+md_show_level(mddev_t *mddev, char *page)
+{
+ mdk_personality_t *p = mddev->pers;
+ if (p == NULL)
+ return 0;
+ if (mddev->level >= 0)
+ return sprintf(page, "RAID-%d\n", mddev->level);
+ else
+ return sprintf(page, "%s\n", p->name);
+}
+
+static struct md_sysfs_entry md_level = {
+ .attr = {.name = "level", .mode = S_IRUGO },
+ .show = md_show_level,
+};
+
+static ssize_t
+md_show_rdisks(mddev_t *mddev, char *page)
+{
+ return sprintf(page, "%d\n", mddev->raid_disks);
+}
+
+static struct md_sysfs_entry md_raid_disks = {
+ .attr = {.name = "raid_disks", .mode = S_IRUGO },
+ .show = md_show_rdisks,
+};
+
+static ssize_t
+md_show_scan(mddev_t *mddev, char *page)
+{
+ char *type = "none";
+ if (mddev->recovery &
+ ((1<<MD_RECOVERY_RUNNING) || (1<<MD_RECOVERY_NEEDED))) {
+ if (mddev->recovery & (1<<MD_RECOVERY_SYNC)) {
+ if (!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
+ type = "resync";
+ else if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery))
+ type = "check";
+ else
+ type = "repair";
+ } else
+ type = "recover";
+ }
+ return sprintf(page, "%s\n", type);
+}
+
+static ssize_t
+md_store_scan(mddev_t *mddev, const char *page, size_t len)
+{
+ int canscan=0;
+ if (mddev->recovery &
+ ((1<<MD_RECOVERY_RUNNING) || (1<<MD_RECOVERY_NEEDED)))
+ return -EBUSY;
+ down(&mddev->reconfig_sem);
+ if (mddev->pers && mddev->pers->sync_request)
+ canscan=1;
+ up(&mddev->reconfig_sem);
+ if (!canscan)
+ return -EINVAL;
+
+ if (strcmp(page, "check")==0 || strcmp(page, "check\n")==0)
+ set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ else if (strcmp(page, "repair")!=0 && strcmp(page, "repair\n")!=0)
+ return -EINVAL;
+ set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
+ set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ md_wakeup_thread(mddev->thread);
+ return len;
+}
+
+static struct md_sysfs_entry md_scan_mode = {
+ .attr = {.name = "scan_mode", .mode = S_IRUGO|S_IWUSR },
+ .show = md_show_scan,
+ .store = md_store_scan,
+};
+
+static struct attribute *md_default_attrs[] = {
+ &md_level.attr,
+ &md_raid_disks.attr,
+ &md_scan_mode.attr,
+ NULL,
+};
+
+static ssize_t
+md_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
+{
+ struct md_sysfs_entry *entry = container_of(attr, struct md_sysfs_entry, attr);
+ mddev_t *mddev = container_of(kobj, struct mddev_s, kobj);
+
+ if (!entry->show)
+ return -EIO;
+ return entry->show(mddev, page);
+}
+
+static ssize_t
+md_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *page, size_t length)
+{
+ struct md_sysfs_entry *entry = container_of(attr, struct md_sysfs_entry, attr);
+ mddev_t *mddev = container_of(kobj, struct mddev_s, kobj);
+
+ if (!entry->store)
+ return -EIO;
+ return entry->store(mddev, page, length);
+}
+
+static void md_free(struct kobject *ko)
+{
+ mddev_t *mddev = container_of(ko, mddev_t, kobj);
+ kfree(mddev);
+}
+
+static struct sysfs_ops md_sysfs_ops = {
+ .show = md_attr_show,
+ .store = md_attr_store,
+};
+static struct kobj_type md_ktype = {
+ .release = md_free,
+ .sysfs_ops = &md_sysfs_ops,
+ .default_attrs = md_default_attrs,
+};
+
int mdp_major = 0;
static struct kobject *md_probe(dev_t dev, int *part, void *data)
add_disk(disk);
mddev->gendisk = disk;
up(&disks_sem);
+ mddev->kobj.parent = kobject_get(&disk->kobj);
+ mddev->kobj.k_name = NULL;
+ snprintf(mddev->kobj.name, KOBJ_NAME_LEN, "%s", "md");
+ mddev->kobj.ktype = &md_ktype;
+ kobject_register(&mddev->kobj);
return NULL;
}
mddev->safemode_timer.data = (unsigned long) mddev;
mddev->safemode_delay = (20 * HZ)/1000 +1; /* 20 msec delay */
mddev->in_sync = 1;
+
+ ITERATE_RDEV(mddev,rdev,tmp)
+ if (rdev->raid_disk >= 0) {
+ char nm[20];
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
+ }
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
* Free resources if final stop
*/
if (!ro) {
+ mdk_rdev_t *rdev;
+ struct list_head *tmp;
struct gendisk *disk;
printk(KERN_INFO "md: %s stopped.\n", mdname(mddev));
+ ITERATE_RDEV(mddev,rdev,tmp)
+ if (rdev->raid_disk >= 0) {
+ char nm[20];
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ sysfs_remove_link(&mddev->kobj, nm);
+ }
+
export_array(mddev);
mddev->array_size = 0;
is_mddev_idle(mddev); /* this also initializes IO event counters */
/* we don't use the checkpoint if there's a bitmap */
- if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) && !mddev->bitmap)
+ if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) && !mddev->bitmap
+ && ! test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
j = mddev->recovery_cp;
else
j = 0;
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
goto unlock;
}
- if (mddev->recovery)
- /* probably just the RECOVERY_NEEDED flag */
- mddev->recovery = 0;
+ /* Clear some bits that don't mean anything, but
+ * might be left set
+ */
+ clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ clear_bit(MD_RECOVERY_ERR, &mddev->recovery);
+ clear_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ clear_bit(MD_RECOVERY_DONE, &mddev->recovery);
/* no recovery is running.
* remove any failed drives, then
if (rdev->raid_disk >= 0 &&
(rdev->faulty || ! rdev->in_sync) &&
atomic_read(&rdev->nr_pending)==0) {
- if (mddev->pers->hot_remove_disk(mddev, rdev->raid_disk)==0)
+ if (mddev->pers->hot_remove_disk(mddev, rdev->raid_disk)==0) {
+ char nm[20];
+ sprintf(nm,"rd%d", rdev->raid_disk);
+ sysfs_remove_link(&mddev->kobj, nm);
rdev->raid_disk = -1;
+ }
}
if (mddev->degraded) {
ITERATE_RDEV(mddev,rdev,rtmp)
if (rdev->raid_disk < 0
&& !rdev->faulty) {
- if (mddev->pers->hot_add_disk(mddev,rdev))
+ if (mddev->pers->hot_add_disk(mddev,rdev)) {
+ char nm[20];
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
spares++;
- else
+ } else
break;
}
}
- if (!spares && (mddev->recovery_cp == MaxSector )) {
- /* nothing we can do ... */
+ if (spares) {
+ clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ } else if (mddev->recovery_cp < MaxSector) {
+ set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ } else if (!test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
+ /* nothing to be done ... */
goto unlock;
- }
+
if (mddev->pers->sync_request) {
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
- if (!spares)
- set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
if (spares && mddev->bitmap && ! mddev->bitmap->file) {
/* We are adding a device or devices to an array
* which has the bitmap stored on all devices.
projects / linux.git / blobdiff