> If I were to use RADOS directly in my app I'd probably rejoice at its > capabilities and how useful and non-legacy it is, but my use is basically > for RBD volumes with OpenStack (libvirt, qemu...). And for that those > capabilities are unneeded. Just to clarify, RBD does utilize librados transactions in certain cases. An example includes CoW/CoR support for clones (the first op is a class method call to rbd.copyup which will write the provided parent image block if the clone object doesn't already exist; and the second op will mutate the data via truncate, overwrite, etc). -- Jason Dillaman _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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