.BI \-\-output \fR=\fPfilename
Write output to \fIfilename\fR.
.TP
-.BI \-\-timeout \fR=\fPtimeout
-Limit run time to \fItimeout\fR seconds.
+.BI \-\-runtime \fR=\fPruntime
+Limit run time to \fIruntime\fR seconds.
.TP
.B \-\-latency\-log
Generate per-job latency logs.
All fio parser warnings are fatal, causing fio to exit with an error.
.TP
.BI \-\-max\-jobs \fR=\fPnr
-Set the maximum allowed number of jobs (threads/processes) to suport.
+Set the maximum allowed number of jobs (threads/processes) to support.
.TP
.BI \-\-server \fR=\fPargs
Start a backend server, with \fIargs\fP specifying what to listen to. See client/server section.
.P
For mixed I/O, the default split is 50/50. For certain types of io the result
may still be skewed a bit, since the speed may be different. It is possible to
-specify a number of IO's to do before getting a new offset, this is one by
+specify a number of IO's to do before getting a new offset, this is done by
appending a `:\fI<nr>\fR to the end of the string given. For a random read, it
would look like \fBrw=randread:8\fR for passing in an offset modifier with a
value of 8. If the postfix is used with a sequential IO pattern, then the value
.B external
Loads an external I/O engine object file. Append the engine filename as
`:\fIenginepath\fR'.
+.TP
+.B falloc
+ IO engine that does regular linux native fallocate callt to simulate data
+transfer as fio ioengine
+.br
+ DDIR_READ does fallocate(,mode = FALLOC_FL_KEEP_SIZE,)
+.br
+ DIR_WRITE does fallocate(,mode = 0)
+.br
+ DDIR_TRIM does fallocate(,mode = FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE)
+.TP
+.B e4defrag
+IO engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate defragment activity
+request to DDIR_WRITE event
+.TP
.RE
.RE
.TP
If true, sync file contents on close. This differs from \fBend_fsync\fR in that
it will happen on every close, not just at the end of the job. Default: false.
.TP
-.BI rwmixcycle \fR=\fPint
-How many milliseconds before switching between reads and writes for a mixed
-workload. Default: 500ms.
-.TP
.BI rwmixread \fR=\fPint
Percentage of a mixed workload that should be reads. Default: 50.
.TP
these time calls will be excluded from other uses. Fio will manually clear it
from the CPU mask of other jobs.
.TP
+.BI ignore_error \fR=\fPstr
+Sometimes you want to ignore some errors during test in that case you can specify
+error list for each error type.
+.br
+ignore_error=READ_ERR_LIST,WRITE_ERR_LIST,VERIFY_ERR_LIST
+.br
+errors for given error type is separated with ':'.
+Error may be symbol ('ENOSPC', 'ENOMEM') or an integer.
+.br
+Example: ignore_error=EAGAIN,ENOSPC:122 .
+.br
+This option will ignore EAGAIN from READ, and ENOSPC and 122(EDQUOT) from WRITE.
+.TP
+.BI error_dump \fR=\fPbool
+If set dump every error even if it is non fatal, true by default. If disabled
+only fatal error will be dumped
+.TP
.BI cgroup \fR=\fPstr
Add job to this control group. If it doesn't exist, it will be created.
The system must have a mounted cgroup blkio mount point for this to work. If
used identically to normal parameters, with the caveat that when used on the
command line, the must come after the ioengine that defines them is selected.
.TP
+.BI (cpu)cpuload \fR=\fPint
+Attempt to use the specified percentage of CPU cycles.
+.TP
+.BI (cpu)cpuchunks \fR=\fPint
+Split the load into cycles of the given time. In microseconds.
+.TP
.BI (libaio)userspace_reap
Normally, with the libaio engine in use, fio will use
the io_getevents system call to reap newly returned events.
For TCP network connections, tell fio to listen for incoming
connections rather than initiating an outgoing connection. The
hostname must be omitted if this option is used.
+.TP
+.BI (e4defrag,donorname) \fR=\fPstr
+File will be used as a block donor (swap extents between files)
+.TP
+.BI (e4defrag,inplace) \fR=\fPint
+Configure donor file block allocation strategy
+.RS
+.BI 0(default) :
+Preallocate donor's file on init
+.TP
+.BI 1:
+allocate space immidietly inside defragment event, and free right after event
+.RE
+.TP
.SH OUTPUT
While running, \fBfio\fR will display the status of the created jobs. For
example:
on that machine, where args defines what fio listens to. The arguments
are of the form 'type:hostname or IP:port'. 'type' is either 'ip' (or ip4)
-for TCP/IP v4, 'ip6' for TCP/IP v6, or 'sock' for a local unix domain socket.
-'hostname' is either a hostname or IP address, and 'port' is the port to
+for TCP/IP v4, 'ip6' for TCP/IP v6, or 'sock' for a local unix domain
+socket. 'hostname' is either a hostname or IP address, and 'port' is the port to
listen to (only valid for TCP/IP, not a local socket). Some examples:
-1) fio --server
+1) fio \-\-server
Start a fio server, listening on all interfaces on the default port (8765).
-2) fio --server=ip:hostname,4444
+2) fio \-\-server=ip:hostname,4444
Start a fio server, listening on IP belonging to hostname and on port 4444.
-3) fio --server=ip6:::1,4444
+3) fio \-\-server=ip6:::1,4444
Start a fio server, listening on IPv6 localhost ::1 and on port 4444.
-4) fio --server=,4444
+4) fio \-\-server=,4444
Start a fio server, listening on all interfaces on port 4444.
-5) fio --server=1.2.3.4
+5) fio \-\-server=1.2.3.4
Start a fio server, listening on IP 1.2.3.4 on the default port.
-6) fio --server=sock:/tmp/fio.sock
+6) fio \-\-server=sock:/tmp/fio.sock
Start a fio server, listening on the local socket /tmp/fio.sock.
When a server is running, you can connect to it from a client. The client
is run with:
-fio --local-args --client=server --remote-args <job file(s)>
+fio \-\-local-args \-\-client=server \-\-remote-args <job file(s)>
-where --local-args are arguments that are local to the client where it is
-running, 'server' is the connect string, and --remote-args and <job file(s)>
+where \-\-local-args are arguments that are local to the client where it is
+running, 'server' is the connect string, and \-\-remote-args and <job file(s)>
are sent to the server. The 'server' string follows the same format as it
does on the server side, to allow IP/hostname/socket and port strings.
You can connect to multiple clients as well, to do that you could run:
-fio --client=server2 --client=server2 <job file(s)>
+fio \-\-client=server2 \-\-client=server2 <job file(s)>
.SH AUTHORS
.B fio