forked from Minki/linux
Make sure all changes to md/degraded are notified.
When a device fails, when a spare is activated, when an array is reshaped, or when an array is started, the extent to which the array is degraded can change. Signed-off-by: Neil Brown <neilb@suse.de>
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@ -392,6 +392,13 @@ also have
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achieved. In that case, the transition to "recover" isn't
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notified, but the transition away is.
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degraded
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This contains a count of the number of devices by which the
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arrays is degraded. So an optimal array with show '0'. A
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single failed/missing drive will show '1', etc.
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This file responds to select/poll, any increase or decrease
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in the count of missing devices will trigger an event.
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mismatch_count
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When performing 'check' and 'repair', and possibly when
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performing 'resync', md will count the number of errors that are
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@ -2969,6 +2969,7 @@ action_store(mddev_t *mddev, const char *page, size_t len)
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err = mddev->pers->start_reshape(mddev);
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if (err)
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return err;
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sysfs_notify(&mddev->kobj, NULL, "degraded");
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} else {
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if (cmd_match(page, "check"))
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set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
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@ -3686,6 +3687,7 @@ static int do_md_run(mddev_t * mddev)
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md_new_event(mddev);
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sysfs_notify(&mddev->kobj, NULL, "array_state");
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sysfs_notify(&mddev->kobj, NULL, "sync_action");
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sysfs_notify(&mddev->kobj, NULL, "degraded");
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kobject_uevent(&mddev->gendisk->dev.kobj, KOBJ_CHANGE);
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return 0;
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}
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@ -6049,7 +6051,9 @@ void md_check_recovery(mddev_t *mddev)
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if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
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/* success...*/
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/* activate any spares */
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mddev->pers->spare_active(mddev);
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if (mddev->pers->spare_active(mddev))
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sysfs_notify(&mddev->kobj, NULL,
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"degraded");
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}
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md_update_sb(mddev, 1);
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