{
atomic_inc(&md_event_count);
wake_up(&md_event_waiters);
- sysfs_notify(&mddev->kobj, NULL, "sync_action");
}
EXPORT_SYMBOL_GPL(md_new_event);
*/
struct super_type {
- char *name;
- struct module *owner;
- int (*load_super)(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version);
- int (*validate_super)(mddev_t *mddev, mdk_rdev_t *rdev);
- void (*sync_super)(mddev_t *mddev, mdk_rdev_t *rdev);
+ char *name;
+ struct module *owner;
+ int (*load_super)(mdk_rdev_t *rdev, mdk_rdev_t *refdev,
+ int minor_version);
+ int (*validate_super)(mddev_t *mddev, mdk_rdev_t *rdev);
+ void (*sync_super)(mddev_t *mddev, mdk_rdev_t *rdev);
+ unsigned long long (*rdev_size_change)(mdk_rdev_t *rdev,
+ unsigned long long size);
};
/*
sb->sb_csum = calc_sb_csum(sb);
}
+/*
+ * rdev_size_change for 0.90.0
+ */
+static unsigned long long
+super_90_rdev_size_change(mdk_rdev_t *rdev, unsigned long long size)
+{
+ if (size && size < rdev->mddev->size)
+ return 0; /* component must fit device */
+ size *= 2; /* convert to sectors */
+ if (rdev->mddev->bitmap_offset)
+ return 0; /* can't move bitmap */
+ rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
+ if (!size || size > rdev->sb_offset*2)
+ size = rdev->sb_offset*2;
+ md_super_write(rdev->mddev, rdev, rdev->sb_offset << 1, rdev->sb_size,
+ rdev->sb_page);
+ md_super_wait(rdev->mddev);
+ return size/2; /* kB for sysfs */
+}
+
+
/*
* version 1 superblock
*/
sb->sb_csum = calc_sb_1_csum(sb);
}
+static unsigned long long
+super_1_rdev_size_change(mdk_rdev_t *rdev, unsigned long long size)
+{
+ struct mdp_superblock_1 *sb;
+ unsigned long long max_size;
+ if (size && size < rdev->mddev->size)
+ return 0; /* component must fit device */
+ size *= 2; /* convert to sectors */
+ if (rdev->sb_offset < rdev->data_offset/2) {
+ /* minor versions 1 and 2; superblock before data */
+ max_size = (rdev->bdev->bd_inode->i_size >> 9);
+ max_size -= rdev->data_offset;
+ if (!size || size > max_size)
+ size = max_size;
+ } else if (rdev->mddev->bitmap_offset) {
+ /* minor version 0 with bitmap we can't move */
+ return 0;
+ } else {
+ /* minor version 0; superblock after data */
+ sector_t sb_offset;
+ sb_offset = (rdev->bdev->bd_inode->i_size >> 9) - 8*2;
+ sb_offset &= ~(sector_t)(4*2 - 1);
+ max_size = rdev->size*2 + sb_offset - rdev->sb_offset*2;
+ if (!size || size > max_size)
+ size = max_size;
+ rdev->sb_offset = sb_offset/2;
+ }
+ sb = (struct mdp_superblock_1 *) page_address(rdev->sb_page);
+ sb->data_size = cpu_to_le64(size);
+ sb->super_offset = rdev->sb_offset*2;
+ sb->sb_csum = calc_sb_1_csum(sb);
+ md_super_write(rdev->mddev, rdev, rdev->sb_offset << 1, rdev->sb_size,
+ rdev->sb_page);
+ md_super_wait(rdev->mddev);
+ return size/2; /* kB for sysfs */
+}
static struct super_type super_types[] = {
[0] = {
.name = "0.90.0",
.owner = THIS_MODULE,
- .load_super = super_90_load,
- .validate_super = super_90_validate,
- .sync_super = super_90_sync,
+ .load_super = super_90_load,
+ .validate_super = super_90_validate,
+ .sync_super = super_90_sync,
+ .rdev_size_change = super_90_rdev_size_change,
},
[1] = {
.name = "md-1",
.owner = THIS_MODULE,
- .load_super = super_1_load,
- .validate_super = super_1_validate,
- .sync_super = super_1_sync,
+ .load_super = super_1_load,
+ .validate_super = super_1_validate,
+ .sync_super = super_1_sync,
+ .rdev_size_change = super_1_rdev_size_change,
},
};
err = 0;
}
+ if (!err)
+ sysfs_notify(&rdev->kobj, NULL, "state");
return err ? err : len;
}
static struct rdev_sysfs_entry rdev_state =
slot = -1;
else if (e==buf || (*e && *e!= '\n'))
return -EINVAL;
- if (rdev->mddev->pers) {
+ if (rdev->mddev->pers && slot == -1) {
/* Setting 'slot' on an active array requires also
* updating the 'rd%d' link, and communicating
* with the personality with ->hot_*_disk.
* failed/spare devices. This normally happens automatically,
* but not when the metadata is externally managed.
*/
- if (slot != -1)
- return -EBUSY;
if (rdev->raid_disk == -1)
return -EEXIST;
/* personality does all needed checks */
sysfs_remove_link(&rdev->mddev->kobj, nm);
set_bit(MD_RECOVERY_NEEDED, &rdev->mddev->recovery);
md_wakeup_thread(rdev->mddev->thread);
+ } else if (rdev->mddev->pers) {
+ mdk_rdev_t *rdev2;
+ struct list_head *tmp;
+ /* Activating a spare .. or possibly reactivating
+ * if we every get bitmaps working here.
+ */
+
+ if (rdev->raid_disk != -1)
+ return -EBUSY;
+
+ if (rdev->mddev->pers->hot_add_disk == NULL)
+ return -EINVAL;
+
+ rdev_for_each(rdev2, tmp, rdev->mddev)
+ if (rdev2->raid_disk == slot)
+ return -EEXIST;
+
+ rdev->raid_disk = slot;
+ if (test_bit(In_sync, &rdev->flags))
+ rdev->saved_raid_disk = slot;
+ else
+ rdev->saved_raid_disk = -1;
+ err = rdev->mddev->pers->
+ hot_add_disk(rdev->mddev, rdev);
+ if (err) {
+ rdev->raid_disk = -1;
+ return err;
+ } else
+ sysfs_notify(&rdev->kobj, NULL, "state");
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ if (sysfs_create_link(&rdev->mddev->kobj, &rdev->kobj, nm))
+ printk(KERN_WARNING
+ "md: cannot register "
+ "%s for %s\n",
+ nm, mdname(rdev->mddev));
+
+ /* don't wakeup anyone, leave that to userspace. */
} else {
if (slot >= rdev->mddev->raid_disks)
return -ENOSPC;
clear_bit(Faulty, &rdev->flags);
clear_bit(WriteMostly, &rdev->flags);
set_bit(In_sync, &rdev->flags);
+ sysfs_notify(&rdev->kobj, NULL, "state");
}
return len;
}
if (e==buf || (*e && *e != '\n'))
return -EINVAL;
- if (my_mddev->pers && rdev->raid_disk >= 0)
- return -EBUSY;
+ if (my_mddev->pers && rdev->raid_disk >= 0) {
+ if (rdev->mddev->persistent) {
+ size = super_types[rdev->mddev->major_version].
+ rdev_size_change(rdev, size);
+ if (!size)
+ return -EBUSY;
+ } else if (!size) {
+ size = (rdev->bdev->bd_inode->i_size >> 10);
+ size -= rdev->data_offset/2;
+ }
+ if (size < rdev->mddev->size)
+ return -EINVAL; /* component must fit device */
+ }
+
rdev->size = size;
if (size > oldsize && rdev->mddev->external) {
/* need to check that all other rdevs with the same ->bdev
}
if (err)
return err;
- else
+ else {
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
return len;
+ }
}
static struct md_sysfs_entry md_array_state =
__ATTR(array_state, S_IRUGO|S_IWUSR, array_state_show, array_state_store);
type = "check";
else
type = "repair";
- } else
+ } else if (test_bit(MD_RECOVERY_RECOVER, &mddev->recovery))
type = "recover";
}
return sprintf(page, "%s\n", type);
} else if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))
return -EBUSY;
- else if (cmd_match(page, "resync") || cmd_match(page, "recover"))
+ else if (cmd_match(page, "resync"))
+ set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ else if (cmd_match(page, "recover")) {
+ set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
- else if (cmd_match(page, "reshape")) {
+ } else if (cmd_match(page, "reshape")) {
int err;
if (mddev->pers->start_reshape == NULL)
return -EINVAL;
err = mddev->pers->start_reshape(mddev);
if (err)
return err;
+ sysfs_notify(&mddev->kobj, NULL, "degraded");
} else {
if (cmd_match(page, "check"))
set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
}
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
+ sysfs_notify(&mddev->kobj, NULL, "sync_action");
return len;
}
sync_speed_show(mddev_t *mddev, char *page)
{
unsigned long resync, dt, db;
- resync = (mddev->curr_mark_cnt - atomic_read(&mddev->recovery_active));
- dt = ((jiffies - mddev->resync_mark) / HZ);
+ resync = mddev->curr_mark_cnt - atomic_read(&mddev->recovery_active);
+ dt = (jiffies - mddev->resync_mark) / HZ;
if (!dt) dt++;
- db = resync - (mddev->resync_mark_cnt);
- return sprintf(page, "%ld\n", db/dt/2); /* K/sec */
+ db = resync - mddev->resync_mark_cnt;
+ return sprintf(page, "%lu\n", db/dt/2); /* K/sec */
}
static struct md_sysfs_entry md_sync_speed = __ATTR_RO(sync_speed);
{
mddev_t *mddev = (mddev_t *) data;
- mddev->safemode = 1;
+ if (!atomic_read(&mddev->writes_pending)) {
+ mddev->safemode = 1;
+ if (mddev->external)
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
+ }
md_wakeup_thread(mddev->thread);
}
return -EINVAL;
}
}
+ sysfs_notify(&rdev->kobj, NULL, "state");
}
md_probe(mddev->unit, NULL, NULL);
mddev->ro = 2; /* read-only, but switch on first write */
err = mddev->pers->run(mddev);
- if (!err && mddev->pers->sync_request) {
+ if (err)
+ printk(KERN_ERR "md: pers->run() failed ...\n");
+ else if (mddev->pers->sync_request) {
err = bitmap_create(mddev);
if (err) {
printk(KERN_ERR "%s: failed to create bitmap (%d)\n",
}
}
if (err) {
- printk(KERN_ERR "md: pers->run() failed ...\n");
module_put(mddev->pers->owner);
mddev->pers = NULL;
bitmap_destroy(mddev);
mddev->changed = 1;
md_new_event(mddev);
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
+ sysfs_notify(&mddev->kobj, NULL, "sync_action");
+ sysfs_notify(&mddev->kobj, NULL, "degraded");
kobject_uevent(&mddev->gendisk->dev.kobj, KOBJ_CHANGE);
return 0;
}
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread);
err = 0;
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
+
} else
err = -EINVAL;
mdname(mddev));
err = 0;
md_new_event(mddev);
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
out:
return err;
}
char *ptr, *buf = NULL;
int err = -ENOMEM;
- md_allow_write(mddev);
+ if (md_allow_write(mddev))
+ file = kmalloc(sizeof(*file), GFP_NOIO);
+ else
+ file = kmalloc(sizeof(*file), GFP_KERNEL);
- file = kmalloc(sizeof(*file), GFP_KERNEL);
if (!file)
goto out;
}
if (err)
export_rdev(rdev);
+ else
+ sysfs_notify(&rdev->kobj, NULL, "state");
md_update_sb(mddev, 1);
+ if (mddev->degraded)
+ set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
return err;
char b[BDEVNAME_SIZE];
mdk_rdev_t *rdev;
- if (!mddev->pers)
- return -ENODEV;
-
rdev = find_rdev(mddev, dev);
if (!rdev)
return -ENXIO;
return 0;
}
+/*
+ * We have a problem here : there is no easy way to give a CHS
+ * virtual geometry. We currently pretend that we have a 2 heads
+ * 4 sectors (with a BIG number of cylinders...). This drives
+ * dosfs just mad... ;-)
+ */
static int md_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
mddev_t *mddev = bdev->bd_disk->private_data;
err = do_md_stop (mddev, 1);
goto done_unlock;
- /*
- * We have a problem here : there is no easy way to give a CHS
- * virtual geometry. We currently pretend that we have a 2 heads
- * 4 sectors (with a BIG number of cylinders...). This drives
- * dosfs just mad... ;-)
- */
}
/*
* here and hit the 'default' below, so only disallow
* 'md' ioctls, and switch to rw mode if started auto-readonly.
*/
- if (_IOC_TYPE(cmd) == MD_MAJOR &&
- mddev->ro && mddev->pers) {
+ if (_IOC_TYPE(cmd) == MD_MAJOR && mddev->ro && mddev->pers) {
if (mddev->ro == 2) {
mddev->ro = 0;
- set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
-
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
+ set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ md_wakeup_thread(mddev->thread);
} else {
err = -EROFS;
goto abort_unlock;
if (!mddev->pers->error_handler)
return;
mddev->pers->error_handler(mddev,rdev);
+ if (mddev->degraded)
+ set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
+ set_bit(StateChanged, &rdev->flags);
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
*/
void md_write_start(mddev_t *mddev, struct bio *bi)
{
+ int did_change = 0;
if (bio_data_dir(bi) != WRITE)
return;
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread);
+ did_change = 1;
}
atomic_inc(&mddev->writes_pending);
if (mddev->safemode == 1)
mddev->in_sync = 0;
set_bit(MD_CHANGE_CLEAN, &mddev->flags);
md_wakeup_thread(mddev->thread);
+ did_change = 1;
}
spin_unlock_irq(&mddev->write_lock);
- sysfs_notify(&mddev->kobj, NULL, "array_state");
}
+ if (did_change)
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
wait_event(mddev->sb_wait,
!test_bit(MD_CHANGE_CLEAN, &mddev->flags) &&
!test_bit(MD_CHANGE_PENDING, &mddev->flags));
* may proceed without blocking. It is important to call this before
* attempting a GFP_KERNEL allocation while holding the mddev lock.
* Must be called with mddev_lock held.
+ *
+ * In the ->external case MD_CHANGE_CLEAN can not be cleared until mddev->lock
+ * is dropped, so return -EAGAIN after notifying userspace.
*/
-void md_allow_write(mddev_t *mddev)
+int md_allow_write(mddev_t *mddev)
{
if (!mddev->pers)
- return;
+ return 0;
if (mddev->ro)
- return;
+ return 0;
if (!mddev->pers->sync_request)
- return;
+ return 0;
spin_lock_irq(&mddev->write_lock);
if (mddev->in_sync) {
mddev->safemode = 1;
spin_unlock_irq(&mddev->write_lock);
md_update_sb(mddev, 0);
-
sysfs_notify(&mddev->kobj, NULL, "array_state");
- /* wait for the dirty state to be recorded in the metadata */
- wait_event(mddev->sb_wait,
- !test_bit(MD_CHANGE_CLEAN, &mddev->flags) &&
- !test_bit(MD_CHANGE_PENDING, &mddev->flags));
} else
spin_unlock_irq(&mddev->write_lock);
+
+ if (test_bit(MD_CHANGE_CLEAN, &mddev->flags))
+ return -EAGAIN;
+ else
+ return 0;
}
EXPORT_SYMBOL_GPL(md_allow_write);
if (rdev->raid_disk < 0
&& !test_bit(Faulty, &rdev->flags)) {
rdev->recovery_offset = 0;
- if (mddev->pers->hot_add_disk(mddev,rdev)) {
+ if (mddev->pers->
+ hot_add_disk(mddev, rdev) == 0) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
if (sysfs_create_link(&mddev->kobj,
int spares = 0;
if (!mddev->external) {
+ int did_change = 0;
spin_lock_irq(&mddev->write_lock);
if (mddev->safemode &&
!atomic_read(&mddev->writes_pending) &&
!mddev->in_sync &&
mddev->recovery_cp == MaxSector) {
mddev->in_sync = 1;
+ did_change = 1;
if (mddev->persistent)
set_bit(MD_CHANGE_CLEAN, &mddev->flags);
}
if (mddev->safemode == 1)
mddev->safemode = 0;
spin_unlock_irq(&mddev->write_lock);
+ if (did_change)
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
}
if (mddev->flags)
md_update_sb(mddev, 0);
+ rdev_for_each(rdev, rtmp, mddev)
+ if (test_and_clear_bit(StateChanged, &rdev->flags))
+ sysfs_notify(&rdev->kobj, NULL, "state");
+
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) &&
!test_bit(MD_RECOVERY_DONE, &mddev->recovery)) {
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
/* success...*/
/* activate any spares */
- mddev->pers->spare_active(mddev);
+ if (mddev->pers->spare_active(mddev))
+ sysfs_notify(&mddev->kobj, NULL,
+ "degraded");
}
md_update_sb(mddev, 1);
mddev->recovery = 0;
/* flag recovery needed just to double check */
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ sysfs_notify(&mddev->kobj, NULL, "sync_action");
md_new_event(mddev);
goto unlock;
}
+ /* Set RUNNING before clearing NEEDED to avoid
+ * any transients in the value of "sync_action".
+ */
+ set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
+ clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
/* Clear some bits that don't mean anything, but
* might be left set
*/
- clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
clear_bit(MD_RECOVERY_INTR, &mddev->recovery);
clear_bit(MD_RECOVERY_DONE, &mddev->recovery);
/* Cannot proceed */
goto unlock;
set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
+ clear_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
} else if ((spares = remove_and_add_spares(mddev))) {
clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);
clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
} else if (mddev->recovery_cp < MaxSector) {
set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ clear_bit(MD_RECOVERY_RECOVER, &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 && mddev->bitmap && ! mddev->bitmap->file) {
/* We are adding a device or devices to an array
* which has the bitmap stored on all devices.
mddev->recovery = 0;
} else
md_wakeup_thread(mddev->sync_thread);
+ sysfs_notify(&mddev->kobj, NULL, "sync_action");
md_new_event(mddev);
}
unlock:
+ if (!mddev->sync_thread) {
+ clear_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
+ if (test_and_clear_bit(MD_RECOVERY_RECOVER,
+ &mddev->recovery))
+ sysfs_notify(&mddev->kobj, NULL, "sync_action");
+ }
mddev_unlock(mddev);
}
}
projects / linux-2.6-omap-h63xx.git / blobdiff