Hi Boaz, The OSD protocol has the concept of caching and that the FUA (force unit access) bit can be used to tell the server to commit a write to stable storage, much like NFS' stable_how4. the object layout driver does not switch on the server caching logic and does not implement commit_pagelist method and its satellites. instead, it assumes write is always to stable storage. the pNFS client communicates stable_how4 (along with other infomation) to the layout drivers via the 'how' argument of the write_pagelist method. the object layout driver currently uses the 'how' argument to decide whether or not to wait for the OSD requests to end or use a callback, but translation of stable_how4 via 'how' to FUA bit is missing. -- Idan Kedar Tonian -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
