Profiling Processes while shutdown Post: 302982122

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Operating Systems Linux Debian Profiling Processes while shutdown Post 302982122 by jim mcnamara on Saturday 24th of September 2016 09:57:31 AM

09-24-2016

Registered User

We had a problem like this in Solaris 10. There was an issue with using NFS across zones on the same system. It hung in certain circumstances.
The point I am trying to make: it may not be a process but a relationship between processes and their current status.

You are assuming a single process is the problem, which is okay, but you ma want to think "larger", multiple process or a device and some process group.

What you gave us is a start, we need more:

Code:

1. is the box standalone - not clustered, no NFS mounts, no samba mounts, etc?
2. does the box actually come down?
3. how much extended time does it take to come down.
    Ex: yesterday it came down in 30 seconds, today it came down in 10 minutes.
4. did you install new software in the near past, and did you get errors on install

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halt

halt(8) 						      System Manager's Manual							   halt(8)

NAME

       halt - Stops the processor

SYNOPSIS

       /usr/sbin/halt [-d] [-l] [-n] [-q] [-y]

DESCRIPTION

       If other users are logged into the system, or if the system is operating at a multiuser run level, use the /usr/sbin/shutdown -h command to
       halt the system.  If only the root user is logged in, and you do not plan to restart the system immediately, use the halt command.

       The halt command writes data to the disks and then stops the processor(s), but does not reboot the machine.  You must be the root  user	to
       run this command.

       When the system displays the  ....Halt completed....  message, you can turn off power to the machine.

       If  the command is invoked without the -l, -n, or -q flag, the halt program logs the shutdown using the syslogd command and places a record
       of the shutdown in the login accounting file, /var/adm/wtmp.  Using the -q and the -n flags imply the -l flag.

FLAGS

       Generates a crash dump of the system before halting it.	Can be used with any other flag.  Does not log the halt using syslog Prevents  the
       sync  before stopping, and does not log the halt using syslog Causes a quick halt, does not log the halt using syslog, and makes no attempt
       to kill all processes Halts the system from a dial-up operation

EXAMPLES

       To halt the system without logging the shutdown in the log file, enter: halt -l To halt the system quickly, enter: halt -q To halt the sys-
       tem quickly, also leaving a crash dump for the savecore command, enter: halt -d -q To halt the system from a dial-up, enter: halt -y

FILES

       Specifies the command path Specifies the syslog daemon Specifies the login accounting file

RELATED INFORMATION

       Commands: fasthalt(8), reboot(8), savecore(8), shutdown(8), syslogd(8)

       Functions: reboot(2), sync(2), syslog(3) delim off

																	   halt(8)