to go in a certain pattern, e.g., on NAND, writing sequentially to erase blocks
and discarding before overwriting. The writetrim mode works well for this
constraint.
+.TP
+.B pmemblk
+Read and write through the NVML libpmemblk interface.
.RE
.P
.RE
.BI 1:
allocate space immediately inside defragment event, and free right after event
.RE
+.TP
+.BI (rbd)clustername \fR=\fPstr
+Specifies the name of the ceph cluster.
.TP
.BI (rbd)rbdname \fR=\fPstr
Specifies the name of the RBD.
Specifies the name of the Ceph pool containing the RBD.
.TP
.BI (rbd)clientname \fR=\fPstr
-Specifies the username (without the 'client.' prefix) used to access the Ceph cluster.
+Specifies the username (without the 'client.' prefix) used to access the Ceph
+cluster. If the clustername is specified, the clientname shall be the full
+type.id string. If no type. prefix is given, fio will add 'client.' by default.
.TP
.BI (mtd)skipbad \fR=\fPbool
Skip operations against known bad blocks.