log section of the filesystem.
The valid suboptions are:
.BI internal[= value ],
+\f3logdev=\f1\f2device\f1,
\f3size=\f1\f2value\f1,
\f3version=\f1\f2[1|2]\f1,
\f3sunit=\f1\f2value\f1, and
If the value is omitted, 1 is assumed.
.IP
The
+.B logdev
+suboption is used to specify that the log section should reside on a
+device separate from the data section. The suboption value is the
+name of a block device. The
+.B internal=1
+and
+.B logdev
+options are mutually exclusive.
+.IP
+The
.B size
suboption is used to specify the size of the log section.
.IP
These options specify the location, size, and other parameters of the
real-time section of the filesystem.
The valid suboptions are:
-.BI extsize= value
+\f3rtdev=\f1\f2device\f1,
+\f3extsize=\f1\f2value\f1,
and
\f3size=\f1\f2value\f1.
.IP
The
+.B rtdev
+suboption is used to specify the device which should contain
+the real-time section of the filesystem.
+The suboption value is the name of a block device.
+.IP
+The
.B extsize
suboption is used to specify the size of the blocks in the real-time
section of the filesystem.