Merge "Do not fail when depth is greater than rbd_max_clone_depth" into stable/train
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commit
60a7361091
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@ -82,7 +82,9 @@ RBD_OPTS = [
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default=5,
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help='Maximum number of nested volume clones that are '
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'taken before a flatten occurs. Set to 0 to disable '
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'cloning.'),
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'cloning. Note: lowering this value will not affect '
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'existing volumes whose clone depth exceeds the new '
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'value.'),
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cfg.IntOpt('rbd_store_chunk_size', default=4,
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help='Volumes will be chunked into objects of this size '
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'(in megabytes).'),
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@ -636,12 +638,6 @@ class RBDDriver(driver.CloneableImageVD, driver.MigrateVD,
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if not parent:
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return depth
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# If clone depth was reached, flatten should have occurred so if it has
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# been exceeded then something has gone wrong.
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if depth > self.configuration.rbd_max_clone_depth:
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raise Exception(_("clone depth exceeds limit of %s") %
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(self.configuration.rbd_max_clone_depth))
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return self._get_clone_depth(client, parent, depth + 1)
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def _extend_if_required(self, volume, src_vref):
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@ -711,7 +707,7 @@ class RBDDriver(driver.CloneableImageVD, driver.MigrateVD,
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depth = self._get_clone_depth(client, src_name)
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# If dest volume is a clone and rbd_max_clone_depth reached,
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# flatten the dest after cloning. Zero rbd_max_clone_depth means
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# infinite is allowed.
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# volumes are always flattened.
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if depth >= self.configuration.rbd_max_clone_depth:
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LOG.info("maximum clone depth (%d) has been reached - "
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"flattening dest volume",
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@ -0,0 +1,8 @@
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---
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fixes:
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- |
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RBD driver `bug #1901241
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<https://bugs.launchpad.net/cinder/+bug/1901241>`_:
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Fixed an issue where decreasing the ``rbd_max_clone_depth`` configuration
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option would prevent volumes that had already exceeded that depth from
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being cloned.
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