VMware: specify chunk size when reading image data
When reading OVA image data from Glance without specifying chunk size,
nova-compute tries to read the entire tar stream in memory because this
is how the tar fileobject is implemented. This patch fixes this by
specifying the chunk size to be 64KB.
Change-Id: I953dfa1c28c25886306e1c9afe281cf2faca4db5
Closes-Bug: #1495834
(cherry picked from commit 71d2d31b9b
)
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parent
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@ -34,6 +34,7 @@ IMAGE_API = image.API()
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IO_THREAD_SLEEP_TIME = .01
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GLANCE_POLL_INTERVAL = 5
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CHUNK_SIZE = 64 * 1024 # default chunk size for image transfer
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class ThreadSafePipe(queue.LightQueue):
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@ -173,7 +174,7 @@ class IOThread(object):
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self._running = True
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while self._running:
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try:
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data = self.input.read(None)
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data = self.input.read(CHUNK_SIZE)
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if not data:
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self.stop()
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self.done.send(True)
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