X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.1;h=c744d1add10f869284127b0261873404ebe2c098;hp=ce3585a43a6660bdda2e45000bea7e9a9825c6ec;hb=4027b2a142c01869a913c8c0654e3392ef1d0489;hpb=2c3a915064410ac3d8cdd936d835a00b802a495f diff --git a/fio.1 b/fio.1 index ce3585a4..c744d1ad 100644 --- a/fio.1 +++ b/fio.1 @@ -68,12 +68,11 @@ available ioengines. Convert \fIjobfile\fR to a set of command\-line options. .TP .BI \-\-readonly -Turn on safety read\-only checks, preventing writes. The \fB\-\-readonly\fR +Turn on safety read\-only checks, preventing writes and trims. The \fB\-\-readonly\fR option is an extra safety guard to prevent users from accidentally starting -a write workload when that is not desired. Fio will only write if -`rw=write/randwrite/rw/randrw' is given. This extra safety net can be used -as an extra precaution as \fB\-\-readonly\fR will also enable a write check in -the I/O engine core to prevent writes due to unknown user space bug(s). +a write or trim workload when that is not desired. Fio will only modify the +device under test if `rw=write/randwrite/rw/randrw/trim/randtrim/trimwrite' +is given. This safety net can be used as an extra precaution. .TP .BI \-\-eta \fR=\fPwhen Specifies when real\-time ETA estimate should be printed. \fIwhen\fR may @@ -1227,7 +1226,7 @@ If you want a workload that has 50% 2k reads and 50% 4k reads, while having 90% 4k writes and 10% 8k writes, you would specify: .RS .P -bssplit=2k/50:4k/50,4k/90,8k/10 +bssplit=2k/50:4k/50,4k/90:8k/10 .RE .P Fio supports defining up to 64 different weights for each data direction.