Documentation update

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 9ed2c5f5580365c69664eecb651f7e1b4065df7b..1d4e46c7ec95ed4990b591a2d4dc7f9c968e72b0 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -53,8 +53,8 @@ bottom, it contains the following basic parameters:
 
        IO engine       How do we issue io? We could be memory mapping the
                        file, we could be using regular read/write, we
-                       could be using splice, async io, syslet, or even
-                       SG (SCSI generic sg).
+                       could be using splice, async io, or even SG
+                       (SCSI generic sg).
 
        IO depth        If the io engine is async, how large a queuing
                        depth do we want to maintain?
@@ -374,6 +374,11 @@ filename_format=str
                default of $jobname.$jobnum.$filenum will be used if
                no other format specifier is given.
 
+unique_filename=bool   To avoid collisions between networked clients, fio
+               defaults to prefixing any generated filenames (with a directory
+               specified) with the source of the client connecting. To disable
+               this behavior, set this option to 0.
+
 opendir=str    Tell fio to recursively add any file it can find in this
                directory and down the file system tree.
 
@@ -701,7 +706,9 @@ ioengine=str        Defines how the job issues io to the file. The following
 
                        vsync   Basic readv(2) or writev(2) IO.
 
-                       psyncv  Basic preadv(2) or pwritev(2) IO.
+                       pvsync  Basic preadv(2) or pwritev(2) IO.
+
+                       psync2  Basic preadv2(2) or pwritev2(2) IO.
 
                        libaio  Linux native asynchronous io. Note that Linux
                                may only support queued behaviour with
@@ -721,9 +728,6 @@ ioengine=str        Defines how the job issues io to the file. The following
                                vmsplice(2) to transfer data from user
                                space to the kernel.
 
-                       syslet-rw Use the syslet system calls to make
-                               regular read/write async.
-
                        sg      SCSI generic sg v3 io. May either be
                                synchronous using the SG_IO ioctl, or if
                                the target is an sg character device