03-15-2018
Thank you sooooooooo much that is was so informative for me,, I really appreciate your effort and time.
really thank you
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
If you have multiple hard drives and multiple mounted filesystems, how can you tell which filesystem resides on which disk? (3 Replies)
Discussion started by: jalburger
3 Replies
2. Debian
once after the fsck during booting linux(debian 3.0) found some corruption in root (/) partition. Then it corrected it; but problem here is root partition is getting mounted in readonly. Other partitions like /home /tmp /boot are normal (rw).
after doing fsck -f for the root partion it finds... (0 Replies)
Discussion started by: yogesh_powar
0 Replies
3. SCO
Hi, I'm working on SCO 2.1. I had a problem with my datadrive & I had replaced it lastly. Now one of the installed filesystems is not getting unmounted at the time of shutting down the system (I guess):confused: after the installation of new tape drive.
If I try to unmount it forciblyby writing... (1 Reply)
Discussion started by: nensee7
1 Replies
4. SCO
Dear all,
i am running SCO unix 7.1, and i had a problem with the system file that was full thus some application wasn't able to be executed; then i've done the following:
- move some core files from / directory
- Increase the system parameter FLCKREC, then rebuild the system.
- after... (1 Reply)
Discussion started by: Athos19
1 Replies
5. Shell Programming and Scripting
I have my Mac OS X program executing a shell script (a script that copies files to a drive). I want to make it so that the shell script automatically kills itself if it finds that the host .app is not running OR kill itself if the drive that it is copying files to has been unmounted. Right now what... (2 Replies)
Discussion started by: pcwiz
2 Replies
6. Shell Programming and Scripting
Hey there, sorry if this is a bit too much of a noob question, trying to get to grips with a simple bash script - but i have done ZERO bash scripting.
basically having worked out how to mount and unmount disks using:
disktool -m *device* & disktool -e *device*
- and looking at the result of... (2 Replies)
Discussion started by: hollister
2 Replies
7. Red Hat
Hi ,
Our one of VMguest all lvm got unmounted once the machine is rebooted
when in repair state dmesg its showing an error out of memory killed process 22289 (lvm)
please refer screen shots attached
when i look the lvscan its showing all lvm are inactive
i checked throuh top there... (0 Replies)
Discussion started by: venikathir
0 Replies
8. AIX
Please help me to find or how the filesystem got unmounted without our(Admin) knowledge? :confused::confused:
It was an Application filesystem and server was not rebooted.
Customer is asking the RCA that how their filesystem got umounted?
bash-3.2# uptime
02:49PM up 193 days, 18:59, 7... (3 Replies)
Discussion started by: Thala
3 Replies
9. UNIX for Dummies Questions & Answers
Hello
I need to install a new application on my linux server but needs to have a new directory e.g /opt/InCharge as this is the directory that the application would ask for during installation .This directory needs to be mounted
if df -h it should appear as mounted (9 Replies)
Discussion started by: DOkuwa
9 Replies
10. How to Post in the The UNIX and Linux Forums
Hi,
I making a script to check nfs mount and unmount options.
After various findings, i didn't get any solution for that.
Can you please help me in making the script.
1) I have used,
if grep -qs '/var/JETSHARE' /proc/mounts; then
echo "It's mounted."
else
echo "It's not mounted.
... (2 Replies)
Discussion started by: Santosh101
2 Replies
ionice(1) General Commands Manual ionice(1)
NAME
ionice - get/set program io scheduling class and priority
SYNOPSIS
ionice [[-c class] [-n classdata] [-t]] -p PID [PID]...
ionice [-c class] [-n classdata] [-t] COMMAND [ARG]...
DESCRIPTION
This program sets or gets the io scheduling class and priority for a program. If no arguments or just -p is given, ionice will query the
current io scheduling class and priority for that process.
As of this writing, a process can be in one of three scheduling classes:
Idle A program running with idle io priority will only get disk time when no other program has asked for disk io for a defined grace
period. The impact of idle io processes on normal system activity should be zero. This scheduling class does not take a priority
argument. Presently, this scheduling class is permitted for an ordinary user (since kernel 2.6.25).
Best effort
This is the effective scheduling class for any process that has not asked for a specific io priority. This class takes a priority
argument from 0-7, with lower number being higher priority. Programs running at the same best effort priority are served in a round-
robin fashion.
Note that before kernel 2.6.26 a process that has not asked for an io priority formally uses "none" as scheduling class, but the io
scheduler will treat such processes as if it were in the best effort class. The priority within the best effort class will be dynam-
ically derived from the cpu nice level of the process: io_priority = (cpu_nice + 20) / 5.
For kernels after 2.6.26 with CFQ io scheduler a process that has not asked for an io priority inherits CPU scheduling class. The
io priority is derived from the cpu nice level of the process (same as before kernel 2.6.26).
Real time
The RT scheduling class is given first access to the disk, regardless of what else is going on in the system. Thus the RT class
needs to be used with some care, as it can starve other processes. As with the best effort class, 8 priority levels are defined
denoting how big a time slice a given process will receive on each scheduling window. This scheduling class is not permitted for an
ordinary (i.e., non-root) user.
OPTIONS
-c class
The scheduling class. 0 for none, 1 for real time, 2 for best-effort, 3 for idle.
-n classdata
The scheduling class data. This defines the class data, if the class accepts an argument. For real time and best-effort, 0-7 is
valid data.
-p pid Pass in process PID(s) to view or change already running processes. If this argument is not given, ionice will run the listed pro-
gram with the given parameters.
-t Ignore failure to set requested priority. If COMMAND or PID(s) is specified, run it even in case it was not possible to set desired
scheduling priority, what can happen due to insufficient privilegies or old kernel version.
EXAMPLES
# ionice -c 3 -p 89
Sets process with PID 89 as an idle io process.
# ionice -c 2 -n 0 bash
Runs 'bash' as a best-effort program with highest priority.
# ionice -p 89 91
Prints the class and priority of the processes with PID 89 and 91.
NOTES
Linux supports io scheduling priorities and classes since 2.6.13 with the CFQ io scheduler.
AUTHORS
Jens Axboe <jens@axboe.dk>
AVAILABILITY
The ionice command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
ionice August 2005 ionice(1)