Merge branch 'logging'

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 2be1648c544706e5504074feab48813acf0164a5..88d10a171da9e373ee40e5844b2b1690c6b3db28 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -798,6 +798,9 @@ ioengine=str        Defines how the job issues io to the file. The following
                                overwriting. The writetrim mode works well
                                for this constraint.
 
+                       pmemblk Read and write through the NVML libpmemblk
+                               interface.
+
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine
                                filename, eg ioengine=external:/tmp/foo.o
@@ -1263,10 +1266,14 @@ exitall_on_error        When one job finishes in error, terminate the rest. The
                default is to wait for each job to finish.
 
 bwavgtime=int  Average the calculated bandwidth over the given time. Value
-               is specified in milliseconds.
+               is specified in milliseconds. If the job also does bandwidth
+               logging through 'write_bw_log', then the minimum of this option
+               and 'log_avg_msec' will be used.  Default: 500ms.
 
 iopsavgtime=int        Average the calculated IOPS over the given time. Value
-               is specified in milliseconds.
+               is specified in milliseconds. If the job also does IOPS logging
+               through 'write_iops_log', then the minimum of this option and
+               'log_avg_msec' will be used.  Default: 500ms.
 
 create_serialize=bool  If true, serialize the file creating for the jobs.
                        This may be handy to avoid interleaving of data
@@ -1888,6 +1895,15 @@ be the starting port number since fio will use a range of ports.
                1         : allocate space immidietly inside defragment event,
                            and free right after event
 
+[rbd] clustername=str  Specifies the name of the Ceph cluster.
+[rbd] rbdname=str      Specifies the name of the RBD.
+[rbd] pool=str         Specifies the naem of the Ceph pool containing RBD.
+[rbd] clientname=str   Specifies the username (without the 'client.' prefix)
+                       used to access the Ceph cluster. If the clustername is
+                       specified, the clientmae shall be the full type.id
+                       string. If no type. prefix is given, fio will add
+                       'client.' by default.
+
 [mtd] skip_bad=bool    Skip operations against known bad blocks.
 
 [libhdfs] hdfsdirectory        libhdfs will create chunk in this HDFS directory