the xfs man page says that xfs opens TCP port 7100
by default.  however, commands which attempt to use
that port (xset, fsinfo, fslsinfo) fail indicating
that xfs isn't listening.  "lsof -p <xfs process>"
says:


# lsof -p 2120
COMMAND  PID USER   FD   TYPE     DEVICE    SIZE  NODE NAME
xfs     2120  xfs  cwd    DIR        3,5    1024     2 /
xfs     2120  xfs  rtd    DIR        3,5    1024     2 /
xfs     2120  xfs  txt    REG        3,5  391872 49207
/usr/X11R6/bin/xfs
xfs     2120  xfs  mem    REG        3,5  342206 28736
/lib/ld-2.1.1.so
xfs     2120  xfs  mem    REG        3,5  538944 28748
/lib/libm-2.1.1.so
xfs     2120  xfs  mem    REG        3,5 4016683 28741
/lib/libc-2.1.1.so
xfs     2120  xfs  mem    REG        3,5  251436 28772
/lib/libnss_nisplus-2.1.1.so
xfs     2120  xfs  mem    REG        3,5  364235 28749
/lib/libnsl-2.1.1.so
xfs     2120  xfs  mem    REG        3,5  243964 28766
/lib/libnss_files-2.1.1.so
xfs     2120  xfs    0u   CHR        1,3          2051
/dev/null
xfs     2120  xfs    1u   CHR        1,3          2051
/dev/null
xfs     2120  xfs    2u   CHR        1,3          2051
/dev/null
xfs     2120  xfs    3r  FIFO        0,0         33619 pipe
xfs     2120  xfs    4r  FIFO        0,0         33621 pipe
xfs     2120  xfs    5u   CHR      136,0             2
/dev/pts/0
xfs     2120  xfs    6r  FIFO        0,0         33804 pipe
xfs     2120  xfs    7u  sock        0,0         33814 can't
identify protocol
xfs     2120  xfs    8u  unix 0xccdbe8c0         33815
/tmp/.font-unix/fs-1
xfs     2120  xfs   10r  FIFO        0,0         33798 pipe
xfs     2120  xfs   12u   CHR      136,0             2
/dev/pts/0
xfs     2120  xfs   21w  FIFO        0,0         33798 pipe
#

which suggests that it has created a socket but not
bound a protocol (like TCP) nor a protocol endpoint
(like 7100) to it?