06-11-2011
Reboot investigation problem
I have a linux server,in this i receive alarm as server has rebooted.
When i check uptime of the server it says that the server has rebooted but when i check output of who -b it says that the server rebooted very long back
Can some one help what is the issue here.
Quote:
[root@x root]# uname -a
Linux hstnu1.hst.oamp.sgns.net 2.4.21-52.ELsmp #1 SMP Tue Sep 25 15:13:04 EDT 20
07 i686 i686 i386 GNU/Linux
[root@x root]# uptime
08:26:09 up 34 min, 0 users, load average: 0.00, 0.00, 0.00
[root@x root]# who -b
system boot Sep 20 09:41
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LEARN ABOUT X11R4
rem_drv
rem_drv(1M) rem_drv(1M)
NAME
rem_drv - remove a device driver from the system
SYNOPSIS
rem_drv [-b basedir] device_driver
The rem_drv command informs the system that the device driver device_driver is no longer valid. If possible, rem_drv unloads device_driver
from memory. rem_drv also updates the system driver configuration files.
If rem_drv has been executed, the next time the system is rebooted it automatically performs a reconfiguration boot (see kernel(1M)).
The following options are supported:
-b basedir Sets the path to the root directory of the diskless client. Used on the server to execute rem_drv for a client. The client
machine must be rebooted to unload the driver.
Note - The root file system of any non-global zones must not be referenced with the -b option. Doing so might damage the
global zone's file system, might compromise the security of the global zone, and might damage the non-global zone's
file system. See zones(5).
Example 1: Removing the sd Driver
The following example removes the sd driver from use:
example% rem_drv sd
Example 2: Removing a Diskless Client
The following example removes the driver from the sun1 diskless client. The driver is not uninstalled or unloaded until the client machine
is rebooted.
example% rem_drv -b /export/root/sun1 sd
Note the caveat on the use of the -b option in the description of that option, above.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
add_drv(1M), kernel(1M), update_drv(1M), attributes(5), devfs(7FS)
6 Apr 2005 rem_drv(1M)