Fix bug in bssplit parsing

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index b3925b5f19b766b3cdba94ceca463e01adcde58b..f216b4cb00c2665796826d37c5df159973b5fe16 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -45,7 +45,7 @@ Print help information for \fIcommand\fR.  May be `all' for all commands.
 .TP
 .BI \-\-debug \fR=\fPtype
 Enable verbose tracing of various fio actions. May be `all' for all types
-or individual types seperated by a comma (eg --debug=io,file). `help' will
+or individual types seperated by a comma (eg \-\-debug=io,file). `help' will
 list all available tracing options.
 .TP
 .B \-\-help
@@ -515,7 +515,11 @@ Same as \fBmmap\fR, but use huge files as backing.
 The amount of memory allocated is the maximum allowed \fBblocksize\fR for the
 job multiplied by \fBiodepth\fR.  For \fBshmhuge\fR or \fBmmaphuge\fR to work,
 the system must have free huge pages allocated.  \fBmmaphuge\fR also needs to
-have hugetlbfs mounted, and \fIfile\fR must point there.
+have hugetlbfs mounted, and \fIfile\fR must point there. At least on Linux,
+huge pages must be manually allocated. See \fB/proc/sys/vm/nr_hugehages\fR
+and the documentation for that. Normally you just need to echo an appropriate
+number, eg echoing 8 will ensure that the OS has 8 huge pages ready for
+use.
 .RE
 .TP
 .BI iomem_align \fR=\fPint
@@ -571,7 +575,7 @@ values are:
 .RS
 .RS
 .TP
-.B md5 crc16 crc32 crc64 crc7 sha256 sha512
+.B md5 crc16 crc32 crc32c crc32c-intel crc64 crc7 sha256 sha512 sha1
 Store appropriate checksum in the header of each block.
 .TP
 .B meta
@@ -586,6 +590,12 @@ than 32-bits.
 .B null
 Pretend to verify.  Used for testing internals.
 .RE
+
+This option can be used for repeated burn-in tests of a system to make sure
+that the written data is also correctly read back. If the data direction given
+is a read or random read, fio will assume that it should verify a previously
+written file. If the data direction includes any form of write, the verify will
+be of the newly written data.
 .RE
 .TP
 .BI verify_sort \fR=\fPbool