Fix build on x86-64 distros without __NR_pread64/pwrite64

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 1374d05e23d5b2d9f047826c45043f2587d11fb9..e54b37b14dbb67911af1d19723cbb29581fdf6a6 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -205,7 +205,14 @@ filename=str       Fio normally makes up a filename based on the job name,
                files between threads in a job or several jobs, specify
                a filename for each of them to override the default. If
                the ioengine used is 'net', the filename is the host and
-               port to connect to in the format of =host:port.
+               port to connect to in the format of =host/port. If the
+               ioengine is file based, you can specify a number of files
+               by seperating the names with a ':' colon. So if you wanted
+               a job to open /dev/sda and /dev/sdb as the two working files,
+               you would use filename=/dev/sda:/dev/sdb
+
+opendir=str    Tell fio to recursively add any file it can find in this
+               directory and down the file system tree.
 
 rw=str         Type of io pattern. Accepted values are:
 
@@ -265,6 +272,11 @@ file_service_type=str  Defines how fio decides which file from a job to
                        roundrobin  Round robin over open files. This
                                is the default.
 
+               The string can have a number appended, indicating how
+               often to switch to a new file. So if option random:4 is
+               given, fio will switch to a new random file after 4 ios
+               have been issued.
+
 ioengine=str   Defines how the job issues io to the file. The following
                types are defined:
 
@@ -297,7 +309,7 @@ ioengine=str        Defines how the job issues io to the file. The following
 
                        net     Transfer over the network to given host:port.
                                'filename' must be set appropriately to
-                               filename=host:port regardless of send
+                               filename=host/port regardless of send
                                or receive, if the latter only the port
                                argument is used.
 
@@ -349,6 +361,10 @@ overwrite=bool     If writing to a file, setup the file first and do overwrites.
 
 end_fsync=bool If true, fsync file contents when the job exits.
 
+fsync_on_close=bool    If true, fio will fsync() a dirty file on close.
+               This differs from end_fsync in that it will happen on every
+               file close, not just at the end of the job.
+
 rwmixcycle=int Value in milliseconds describing how often to switch between
                reads and writes for a mixed workload. The default is
                500 msecs.