10-31-2018
IBM P730 running AIX 7.1 (8231-E2B) - Fans spinning loud/max rpm?
We have a IBM P730 machine running AIX 7.1 in a properly air cooled server room. Just recently the fans on the unit kicked into overdrive, they are very loud and spinning at max.
Typically this happens when the server first boots then they normalize.
However for some odd reason, they sound like they are spinning at max RPM.
There is no LED amber light on the control panel or anything in the errpt (though I think it was cleared very recently so if there was something in there - it is now gone).
Is there a way from the OS to control the fan speed? There is no LPARs on AIX, we run the OS on bare metal - no virtualization of any kind.
Since this is a D/R site - I have tried to shutdown and startup the machine (I know seems excessive for a UNIX machine); but it did not resolve the issue.
I also tried the "diag" command in AIX and didn't find any issues.
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LEARN ABOUT XFREE86
bos_exec
BOS_EXEC(8) AFS Command Reference BOS_EXEC(8)
NAME
bos_exec - Executes a command on a remote server machine
SYNOPSIS
bos exec -server <machine name> -cmd <command to execute>
[-cell <cell name>] [-noauth] [-localauth] [-help]
bos e -s <machine name> -cm <command to execute>
[-ce <cell name>] [-n] [-l] [-h]
DESCRIPTION
The bos exec command executes the indicated command on the file server machine named by the -server argument. Its intended use is to reboot
the machine, using the /sbin/reboot command or equivalent.
OPTIONS
-server <machine name>
Indicates the server machine on which to execute the command. Identify the machine by IP address or its host name (either fully-
qualified or abbreviated unambiguously). For details, see bos(8).
-cmd <command to execute>
Specifies the complete local disk pathname of the command to execute (for example, /sbin/reboot). Surround this argument with double
quotes ("") if the command contains one or more spaces.
-cell <cell name>
Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see bos(8).
-noauth
Assigns the unprivileged identity "anonymous" to the issuer. Do not combine this flag with the -localauth flag. For more details, see
bos(8).
-localauth
Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. The bos command interpreter presents the ticket
to the BOS Server during mutual authentication. Do not combine this flag with the -cell or -noauth options. For more details, see
bos(8).
-help
Prints the online help for this command. All other valid options are ignored.
EXAMPLES
The following command reboots the machine "fs2.abc.com". The issuer has previously issued the bos shutdown command to shutdown all
processes cleanly.
% bos exec -server fs2.abc.com -cmd /sbin/shutdown -r now
PRIVILEGE REQUIRED
The issuer must be listed in the /etc/openafs/server/UserList file on the machine named by the -server argument, or must be logged onto a
server machine as the local superuser "root" if the -localauth flag is included.
The bos exec command is not available on servers running in restricted mode.
SEE ALSO
bos(8)
COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas
Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.
OpenAFS 2012-03-26 BOS_EXEC(8)