Confusion In run level... Post: 302168000

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Operating Systems Solaris Confusion In run level... Post 302168000 by Perderabo on Saturday 16th of February 2008 11:07:52 AM

02-16-2008

Administrator Emeritus

First s == S; init accepts either upper or lower case s. The meaning of s is built into the init program itself. If init comes up in level s, /etc/inittab is ignored. If init had been in a numeric run level, init will transition down to a point where /etc/inittab is ignored. This is the original and official single user mode. It is the only mode that works if /etc/inittab is missing. While init is in level S, init will ignore requests to reread /etc/inittab. In level S, init would originally connect a shell to the system console so that commands can be entered. Some versions of init, including Sun's, have a change to connect the login program to the console. This change makes the system more secure, but now booting up to single user requires /etc/passwd and /etc/shadow. Some versions of init can do either behavior depending on the security level of the OS. But all of this is built in to init and cannot be changed by modifying /etc/inittab.

The numeric run levels are under the control of the author of /etc/inittab. Sun uses:

0 = firmware mode...OS will die and you get the "ok" prompt
1 = "administrative" mode, Sun's replacement for single user mode with a very few things running
2 = multi-user mode, a lot of stuff running and people can sign on
3 = makes local resources available to other systems
4 = not used
5 = power down the system
6 = reboot the system

So "init 0" is very different... no OS at all will be running. Level s and Level S are different names for the same thing. Level S and 1 are very close in concept. The difference is that a few things will be running in level 1 and level 1 requires a good /etc/inittab.

Also Sun and everyone else cheat a little bit. If you are in a high level and enter level S, you do not really go all the way down to a "true" level S. They will leave a few things running. This leads the system admin's rule that a "true" level S is achieved only by rebooting and coming up directly to level S. This is partially because of intent and partially because some stuff just will not die.

Perderabo

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LEARN ABOUT DEBIAN

fl-run-test

FL-RUN-TEST(1)							   Debian manual						    FL-RUN-TEST(1)

NAME

       fl-run-test - runs a funkload test file

SYNOPSIS

       fl-run-test [ options ] file [ class.method | class | suite ]

DESCRIPTION

       A FunkLoad test can be used like a standard unittest using a unittest.main() and a 'python MyFile.py'.

       Note that fl-run-test can be used to launch normal unittest.TestCase and (if you use python2.4) doctest in a plain text file or embedded in
       a python docstring. The --debug option makes doctests verbose.

OPTIONS

       --version
	      show program's version number and exit

       --help, -h
	      show this help message and exit

       --quiet, -q
	      Minimal output.

       --verbose, -v
	      Verbose output.

       --debug, -d
	      FunkLoad and doctest debug output.

       --debug-level=DEBUG_LEVEL
	      Debug level 3 is more verbose.

       --url=MAIN_URL, -uMAIN_URL
	      Base URL to bench without ending '/'.

       --sleep-time-min=FTEST_SLEEP_TIME_MIN, -mFTEST_SLEEP_TIME_MIN
	      Minumum sleep time between request.

       --sleep-time-max=FTEST_SLEEP_TIME_MAX, -MFTEST_SLEEP_TIME_MAX
	      Maximum sleep time between request.

       --dump-directory=DUMP_DIR
	      Directory to dump html pages.

       --firefox-view, -V
	      Real time view using firefox, you must have a running instance of firefox in the same host.

       --no-color
	      Monochrome output.

       --loop-on-pages=LOOP_STEPS, -lLOOP_STEPS
	      Loop as fast as possible without concurrency on pages expect a page number or a slice like 3:5. Output some statistics.

       --loop-number=LOOP_NUMBER, -nLOOP_NUMBER
	      Number of loop.

       --accept-invalid-links
	      Do not fail if css/image links are not reachable.

       --simple-fetch
	      Don't load additional links like css or images when fetching an html page.

       --stop-on-fail
	      Stop tests on first failure or error.

       --regex=REGEX, -eREGEX
	      The test names must match the regex.

       --list Just list the test names.

       --pause
	      Pause between request, press ENTER to continue.

SEE ALSO

       fl-build-report(1), fl-credential-ctl(1), fl-install-demo(1), fl-monitor-ctl(1), fl-record(1), fl-run-bench(1).

AUTHOR

       Funkload was written by Benoit Delbosc.

       This manual page was written by Jose Parrella <bureado@debian.org>, for the Debian project (but may be used by others).

Debian Project							   26 March 2009						    FL-RUN-TEST(1)

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