Duplicate of #1370247
** Changed in: glance
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1390386
Title:
Bad math interpreting rbd_store_chunk_size leads to wrong chunk size
and slow upload of images
Status in OpenStack Image Registry and Delivery Service (Glance):
Invalid
Bug description:
Setting rbd_store_chunk_size -= 8 leads to an actual chunk size of 8
KB not 8 MB. The result is incredibly slow uploads to the RBD backend.
2014-11-06 11:42:30.619 6986 DEBUG glance_store._drivers.rbd [-] writing
chunk at offset 8208 add
/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py:365
2014-11-06 11:42:30.626 6986 DEBUG glance_store._drivers.rbd [-] writing
chunk at offset 16416 add
/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py:365
2014-11-06 11:42:30.633 6986 DEBUG glance_store._drivers.rbd [-] writing
chunk at offset 24624 add
/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py:365
2014-11-06 11:42:30.638 6986 DEBUG glance_store._drivers.rbd [-] writing
chunk at offset 32832 add
/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py:365
/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py: Line 192
self.chunk_size = chunk * (1024 ^ 2)
should be either
self.chunk_size = chunk * (1024 ** 2)
or
self.chunk_size = chunk * units.Mi
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