path: root/HOWTO
diff options
authorKris Davis <>2018-03-19 10:19:44 -0600
committerJens Axboe <>2018-03-19 10:19:44 -0600
commit52b81b7c3b1c9900bf124b6cd0a2cef4a9a1df76 (patch)
tree36439929f24c8b76ca9d185868231616e61558f4 /HOWTO
parent8d7632aa5a5a5c866ff2872319056df4ac2541ed (diff)
sg: add read/write FUA options
Enable the user to ask for the FUA bits to be set on read and write operations. Signed-off-by: Jens Axboe <>
Diffstat (limited to 'HOWTO')
1 files changed, 12 insertions, 0 deletions
diff --git a/HOWTO b/HOWTO
index acb9e97f..dbbbfaa1 100644
--- a/HOWTO
+++ b/HOWTO
@@ -1747,6 +1747,7 @@ I/O engine
:manpage:`read(2)` and :manpage:`write(2)` for asynchronous
I/O. Requires :option:`filename` option to specify either block or
character devices.
+ The sg engine includes engine specific options.
Doesn't transfer any data, just pretends to. This is mainly used to
@@ -2068,6 +2069,17 @@ with the caveat that when used on the command line, they must come after the
multiple paths exist between the client and the server or in certain loopback
+.. option:: readfua=bool : [sg]
+ With readfua option set to 1, read operations include
+ the force unit access (fua) flag. Default is 0.
+.. option:: writefua=bool : [sg]
+ With writefua option set to 1, write operations include
+ the force unit access (fua) flag. Default is 0.
I/O depth