i have a server constantly have high iowait, but i am not able to tell which process generate the most of io. none commands, such as iostat, sar, top will give me this kind of information.
hope there is some command can help me to spot the process generate the most of io
let to know input... (1 Reply)
Hi All,
Any ideas how to reduce IOWAIT and increase disk speed on Linux server.
Server has 4 CPUs and with 8GB RAM.
Thanks in advance,
Regards,
Bache (3 Replies)
Hi all,
Under top command you could see some iowait output.
Is any way to locate which process(s) is causing the high percentage of iowait?
17:48:39 up 19 days, 18:54, 3 users, load average: 3.24, 3.14, 3.17
392 processes: 389 sleeping, 1 running, 2 zombie, 0 stopped
CPU states: cpu user... (3 Replies)
Does anyone have a monitoring script in solaris that monitors the drives in an exclosure? The script should be in /bin/bash or /bin/sh thnks again
This should be for solaris 10/11 looking for something that tells me a drive is down or offline.:confused: (0 Replies)
Hi all
Can anyone advise/confirm whether total CPU usage when running sar is %user+%system+%iowait or is it %user+%system only?
I want to confirm whether I am having a CPU-bound problem or not.
This is a single-CPU VMware machine.
$ sar 5 20
Linux 2.6.18-238.5.1.el5... (7 Replies)
Hi All,
In a script I would like to check whether the current running command is completed in 1 hour or not. This i want to achieve inside the same script. I don't want to use separate script to monitor my current running script.
eg.
pseudocode;
Command1
if command1>60 mins
then... (7 Replies)
HIi Guys... I am in a fix.... 1st the code :
Script 123.sh looks like this :
./abc # a script which is getting called in this script
while true
do
count=`ps -ef | grep abc | wc -l`
if
echo "abc is running
sleep 10
fi
done
but the process is getting checked... (5 Replies)
Sorry if this is the wrong forum
Searching for Saas Monitor service which monitor my servers which are sitting in different providers .
This monitor tool will take as less CPU as possible , and will send info about the server to main Dashboard.
The info I need is CPU / RAM / my servers status (... (1 Reply)
Hi all,
on our application server we have the following script that monitor the status of the website, my problem here is that i have edite the retries from 3 to 5,
and the timewait to 120 second,
so the script should check 5 times every 2 minutes, and if the fifth check fails it must restart... (0 Replies)
Discussion started by: charli1
0 Replies
LEARN ABOUT DEBIAN
fence_virsh
FENCE_AGENT(8) System Manager's Manual FENCE_AGENT(8)NAME
fence_virsh - Fence agent for virsh
DESCRIPTION
fence_virsh is an I/O Fencing agent which can be used with the virtual machines managed by libvirt. It logs via ssh to a dom0 and there run
virsh command, which does all work.
By default, virsh needs root account to do properly work. So you must allow ssh login in your sshd_config.
fence_virsh accepts options on the command line as well as from stdin. Fenced sends parameters through stdin when it execs the agent.
fence_virsh can be run by itself with command line options. This is useful for testing and for turning outlets on or off from scripts.
PARAMETERS -o, --action=<action>
Fencing Action (Default Value: reboot)
-a, --ip=<ip>
IP Address or Hostname This parameter is always required.
-l, --username=<name>
Login Name This parameter is always required.
-p, --password=<password>
Login password or passphrase
-S, --password-script=<script>
Script to retrieve password
-x, --ssh
SSH connection (Default Value: true)
-k, --identity-file=<filename>
Identity file for ssh
-n, --plug=<id>
Physical plug number or name of virtual machine This parameter is always required.
-4, --inet4-only
Forces agent to use IPv4 addresses only
-6, --inet6-only
Forces agent to use IPv6 addresses only
-u, --ipport=<port>
TCP port to use for connection with device
-v, --verbose
Verbose mode
-D, --debug-file=<debugfile>
Write debug information to given file
-V, --version
Display version information and exit
-h, --help
Display help and exit
-C, --separator=<char>
Separator for CSV created by operation list (Default Value: ,)
--power-timeout
Test X seconds for status change after ON/OFF (Default Value: 20)
--shell-timeout
Wait X seconds for cmd prompt after issuing command (Default Value: 3)
--login-timeout
Wait X seconds for cmd prompt after login (Default Value: 5)
--power-wait
Wait X seconds after issuing ON/OFF (Default Value: 0)
--delay
Wait X seconds before fencing is started (Default Value: 0)
--retry-on
Count of attempts to retry power on (Default Value: 1)
ACTIONS
on Power on machine.
off Power off machine.
reboot Reboot machine.
status This returns the status of the plug/virtual machine.
list List available plugs with aliases/virtual machines if there is support for more then one device. Returns N/A otherwise.
monitor
Check if fencing device is running. List available plugs/virtual machines or get status of machine (if it does not support more).
metadata
The operational behavior of this is not known.
STDIN PARAMETERS
action Fencing Action (Default Value: reboot)
ipaddr IP Address or Hostname This parameter is always required.
login Login Name This parameter is always required.
passwd Login password or passphrase
passwd_script
Script to retrieve password
secure SSH connection (Default Value: true)
identity_file
Identity file for ssh
port Physical plug number or name of virtual machine This parameter is always required.
inet4_only
Forces agent to use IPv4 addresses only
inet6_only
Forces agent to use IPv6 addresses only
ipport TCP port to use for connection with device
verbose
Verbose mode
debug Write debug information to given file
version
Display version information and exit
help Display help and exit
separator
Separator for CSV created by operation list (Default Value: ,)
power_timeout
Test X seconds for status change after ON/OFF (Default Value: 20)
shell_timeout
Wait X seconds for cmd prompt after issuing command (Default Value: 3)
login_timeout
Wait X seconds for cmd prompt after login (Default Value: 5)
power_wait
Wait X seconds after issuing ON/OFF (Default Value: 0)
delay Wait X seconds before fencing is started (Default Value: 0)
retry_on
Count of attempts to retry power on (Default Value: 1)
fence_virsh (Fence Agent) 2009-10-20 FENCE_AGENT(8)