10 More Discussions You Might Find Interesting
1. Linux
I have a freshly installed Oracle Linux 7.1 ( akin to RHEL ) server.
However after installing some Oracle software, I have noticed that my hard disk light is continually on and the system performance is slow.
So I check out SAR and IOSTAT
lab3:/root>iostat
Linux... (2 Replies)
Discussion started by: jimthompson
2 Replies
2. UNIX for Dummies Questions & Answers
In a SCO Unix shop, I am working on the following script to move any file to its same location on the target machine (called 'othersy' here):
pwd=`pwd`
for i in "$@"
do
echo " $i "
if ; then echo 1; else echo 0; fi
rcp -p $i othersy:$pwd/$i
echo "Finished with ^ If I find a file... (4 Replies)
Discussion started by: wbport
4 Replies
3. Solaris
Hello,
we have a machine with Solaris Express 11, 2 LSI 9211 8i SAS 2 controllers (multipath to disks), multiport backplane, 16 Seagate Cheetah 15K RPM disks.
Each disk has a sequential performance of 220/230 MB/s and in fact if I do a
dd if=/dev/zero of=/dev/rdsk/<diskID_1> bs=1024k... (1 Reply)
Discussion started by: golemico
1 Replies
4. Solaris
What tools/utilities do you use to generate metrics on disk i/o throughput on Solaris. For example, if I want to see the i/o rate of random or sequential r/w. (2 Replies)
Discussion started by: dangral
2 Replies
5. Red Hat
Running CentOS 5.5:
I've come across a relatively recent problem, where in the last 2 months or so, the root disk goes to 99% utilization for about 20 seconds when a user logs in. This occurs whether a user logs in locally or via ssh. I have tried using lsof to track down the process that is... (5 Replies)
Discussion started by: dangral
5 Replies
6. Red Hat
I am getting absolutely dreadful iowait stats on my disks when I am trying to install some applications.
I have 2 physical disks on which I have created 2 separate logical volume groups and a logical volume in each. I have dumped some stats as below
My dual core CPU is not being over utilised... (3 Replies)
Discussion started by: jimthompson
3 Replies
7. AIX
I'm search for a disk exerciser / load tool like iometer, iozone, diskx for IBM AIX 5.2 and 5.3
Because of a very bad disk performance on several AIX systems, I need to have a tool which is able to generate a disk load on my local and SAN disks.
Does somebody knows a kind of tool which is... (5 Replies)
Discussion started by: funsje
5 Replies
8. AIX
Hello,
I have a aix 570 system with san disk. I do write test of performance
in a lv with four disk. While the test I run filemon tools for trace
the disk activity. The outputs of filemon are at the en of this message. I
see my lV(logical volume) throughput at 100 meg by second. 2 of 4
disk... (0 Replies)
Discussion started by: Hugues
0 Replies
9. AIX
Can I change any AIX System paramerter for speeding the data Disk performance?
Currently it slows with writing operations. (1 Reply)
Discussion started by: gogogo
1 Replies
10. Filesystems, Disks and Memory
I have some questions regarding disk perfomance, and what I can do to make it just a little (or much :)) more faster.
From what I've heard the first partitions will be faster than the later ones because tracks at the outer edges of a hard drive platter simply moves faster. But I've also read in... (4 Replies)
Discussion started by: J.P
4 Replies
volunroot(8) System Manager's Manual volunroot(8)
NAME
volunroot - Remove Logical Storage Manager hooks for rootable volumes
SYNOPSIS
/usr/sbin/volunroot [-a | -A]
OPTIONS
Specifies that all volumes on the system disk be converted back to UNIX disk partitions, not just the root and swap volumes, rootvol and
swapvol. Forces removal of the private region unless it is the last one in the system.
DESCRIPTION
The volunroot script can be used to restore the accessibility of the root, swap, and other file systems on the boot disk directly through
disk partitions instead of through volume devices. The script also removes other changes that were made to enable booting of the system
from the root volume, so that the system will boot with no dependency on the Logical Storage Manager.
When used with no options, volunroot affects only the root and swap volumes, rootvol and swapvol.
For volunroot to work properly, only one plex must exist for each of the affected volumes. This plex must be the one created by volrootmir
or the original plex created when the root disk was encapsulated. This ensures that the underlying subdisks will have equivalent partitions
defined for them on the disk.
If these conditions are not met, the volunroot operation fails and none of the volumes are converted to disk partitions.
The unwanted plexes can be removed using either voledit or volplex.
SEE ALSO
volencap(8), voldiskadm(8), voledit(8), volintro(8), volplex(8), volrootmir(8)
volunroot(8)