After changed the system time from 4-20 to 4-5, upload file to swift returned 409 conflict, this file had been uploaded to swift at 4-20, the 409 conflict is caused by the fact that swift compares the request time against the disk_file's X-Timestamp, if the request time is older than the file's X-Timestamp, swift will return a 409 response. My question is that why swift compares the two timestamp, and how I can upload file to swift successfully? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150429/6d763148/attachment.html>