diod - distributed I/O daemon
diod is the distributed I/O daemon server, which implements
I/O forwarding on Linux clusters.
Configuration is read from the diod.conf (5) config file. Some
configuration can be overridden on the command line, as described below.
- -f, --foreground
- Do not change working directory to /var/run, drop the controlling
terminal, or run in the background. Send logs to stderr not syslog, unless
sent somewhere else by -L.
- -r, --rfdno INT
- -w, --wfdno INT
- Serve a connected client inherited on the specified read and write file
descriptors. For file descriptors connected bidirectionally, the two
options may be set to the same value.
- -l, --listen
address
- Set the listen address. The address may be in the form of HOST:PORT,
IP:PORT, or /path/to/unix_domain_socket form (default 0.0.0.0:564). This
option may be specified more than once. It overrides the listen
config file setting.
- -t, --nwthreads
INT
- Set the number of worker threads to spawn to handle 9P operations for each
unique aname. This option overrides the nwthreads setting in
diod.conf (5). The default is 16.
- -e, --export PATH
- Set the file system to be exported. This option may be specified more than
once. It overrides the exports setting in diod.conf (5).
- -E, --export-all
- Export everything in the server's /proc/mounts.
- -o, --export-opts
OPT[,OPT,...]
- Set global export options. This option overrides the exportopts
setting in diod.conf (5).
- -n, --no-auth
- This option allows users to attach without security credentials. It
overrides the auth_required setting in diod.conf (5).
- -N, --no-userdb
- This option disables password/group lookups. It allows any uid to attach
and assumes gid=uid, and supplementary groups contain only the primary
gid. It overrides the userdb setting in diod.conf (5).
- -S, --allsquash
- Remap all users to the squash user. The attaching user need not be present
in the server's password file. This option overrides the allsquash
setting in diod.conf (5).
- -U, --squashuser
- Set the squash user. The default is nobody. This option overrides the
squashuser setting in diod.conf (5). Note: if diod is not
run as root, the effective uid overrides the squashuser.
- -u, --runas-uid
UID
- Run the server as UID and only allow that user to attach. If invoked as
root, diod sets real and effective uid, gid, and supplementary
groups to those belonging to UID.
- -L, --logdest DEST
- Set the destination for logging. Possible destinations are
syslog:facility:level, stderr, stdout, or a file
name. This option overrides the logdest setting in diod.conf
(5).
- -d, --debug MASK
- Set the debug mask. The bit values are:
0x01 - log decoded 9P protocol messages
- -c, --config-file
PATH
- Set config file path.
/usr/sbin/diod
/etc/diod.conf
diod.conf (5), mount.diod (8), hosts_access (5)