On Fri, Mar 31, 2017 at 10:36 PM, 许雪寒 <xuxuehan@xxxxxx> wrote: > We created an image, write data into it, then protect it and clone a new image. Then we create a snapshot, snap1, of the cloned image, then truncate it and create a snapshot, snap2. In the diff of the two snapshot, we found that only the data that are not truncated is recorded in the diff, which means the truncate operation is not reflected by the diff. When you say "truncate" above, what specific operation are you performing so that I can attempt to recreate it? -- Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com