Merge "Add warning message about slow volume backend"
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commit
e31158cd24
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@ -2648,7 +2648,20 @@ class VolumeManager(manager.CleanableManager,
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resource={'type': 'driver',
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resource={'type': 'driver',
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'id': self.driver.__class__.__name__})
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'id': self.driver.__class__.__name__})
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else:
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else:
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volume_stats = self.driver.get_volume_stats(refresh=True)
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slowmsg = "The " + self.driver.__class__.__name__ + " volume " \
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"driver's get_volume_stats operation ran for " \
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"%(seconds).1f seconds. This may indicate a " \
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"performance problem with the backend which can lead " \
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"to instability."
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@timeutils.time_it(
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LOG, log_level=logging.WARN, message=slowmsg,
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min_duration=CONF.backend_stats_polling_interval / 2)
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def get_stats():
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return self.driver.get_volume_stats(refresh=True)
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volume_stats = get_stats()
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if self.extra_capabilities:
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if self.extra_capabilities:
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volume_stats.update(self.extra_capabilities)
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volume_stats.update(self.extra_capabilities)
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if volume_stats:
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if volume_stats:
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@ -0,0 +1,7 @@
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---
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features:
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- |
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Log a warning from the volume service when a volume driver's
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get_volume_stats() call takes a long time to return. This can help
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deployers troubleshoot a cinder-volume service misbehaving due to a
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driver/backend performance issue.
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