hi, all has any one try to use ppservers to speed up sha256 compute in cinder backup driver? is it possible to setup ppserver ? i try it but it return error File "/usr/lib/python2.7/site-packages/pptransport.py", line 124, in __init__ raise TypeError("Both arguments of PipeTransport constructor " \ TypeError: Both arguments of PipeTransport constructor must be file objects any one can help? yuliyang at cmss.chinamobile.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20170412/c0695e76/attachment.html>