use true/false for bool type

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 80b9e75a75cf52ba86b38f6e1addea8f4a118b52..6c9e9a4e55f065335a245570502222c655f6861e 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1290,7 +1290,7 @@ Block size
                        means default for reads, 8k for writes and trims.
 
                **bs=,8k,**
-                       means default for reads, 8k for writes, and default for writes.
+                       means default for reads, 8k for writes, and default for trims.
 
 .. option:: blocksize_range=irange[,irange][,irange], bsrange=irange[,irange][,irange]
 
@@ -1468,6 +1468,9 @@ Buffers and memory
                **mmapshared**
                        Same as mmap, but use a MMAP_SHARED mapping.
 
+               **cudamalloc**
+                       Use GPU memory as the buffers for GPUDirect RDMA benchmark.
+
        The area allocated is a function of the maximum allowed bs size for the job,
        multiplied by the I/O depth given. Note that for **shmhuge** and
        **mmaphuge** to work, the system must have free huge pages allocated. This
@@ -1675,6 +1678,11 @@ I/O engine
                        DDIR_TRIM
                                does fallocate(,mode = FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE).
 
+               **ftruncate**
+                       I/O engine that sends :manpage:`ftruncate(2)` operations in response
+                       to write (DDIR_WRITE) events. Each ftruncate issued sets the file's
+                       size to the current block offset. Block size is ignored.
+
                **e4defrag**
                        I/O engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate
                        defragment activity in request to DDIR_WRITE event.
@@ -2459,6 +2467,7 @@ Verification
        contents to one or more separate threads. If using this offload option, even
        sync I/O engines can benefit from using an :option:`iodepth` setting higher
        than 1, as it allows them to have I/O in flight while verifies are running.
+       Defaults to 0 async threads, i.e. verification is not asynchronous.
 
 .. option:: verify_async_cpus=str
 
@@ -2495,7 +2504,7 @@ Verification
 
        <type> is "local" for a local run, "sock" for a client/server socket
        connection, and "ip" (192.168.0.1, for instance) for a networked
-       client/server connection.
+       client/server connection. Defaults to true.
 
 .. option:: verify_state_load=bool