Sponsored Content
Operating Systems AIX Filesystem reduction size issue Post 302900711 by ibmtech on Thursday 8th of May 2014 10:39:49 AM
Old 05-08-2014
Its just more to this than file system size reduction.

You have around 1.1TB of storage, you have emc MPIO. Now,
1. How are the disks configured? NPIV or vscsi or direct fibre (Have you configured the fscsiX setting?)
2. Disk allocation is absolutely wrong, 500 GB disk will definitely degrade the performance.
3. Did you configure the disks queue depth values?
4. What version of OS are you using?
5. What version of oracle are you using?
If the version of Oracle and OS require you to enable CIO, was it done.

Frankly %tm_act is way beyond, generally it should be within 30

You want to reduce the size of disks and evenly strip the LV across them.

These are few of the many question to ask.

Also, can you paste the %utilization of each File system (using df -g),

Is this a production system?

There is other way, by bringing down (and if required umount and remount the FS) the DB and try to reduce the FS (which I don't do/recommend in realtime)
 

10 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

Changing Filesystem size.

Hi there, can i change the size of filesystem afterwards. i want give some more space to my /export/home and want take some space from /opt. is it possible in solaris ? Any help will be appriciated. Abid (2 Replies)
Discussion started by: abidmalik
2 Replies

2. AIX

Increasing the FileSystem Size

Hi Everybody, I have AIX 4.3 and I have a FileSystem with 400GB size, which called /db/run. Because of grow up of the application's data, more storage has been added 200GB. To add this space without affecting the application & the application's requirements, I have to add this 200GB to the existed... (9 Replies)
Discussion started by: aldowsary
9 Replies

3. UNIX for Dummies Questions & Answers

actual filesystem size during backup

Scenario............ ufsdump 0uf /dev/rmt/0n / root has 10GB available but only 5GB are used. Does the backup record the entire 10GB regardless of whats actually used or just the 5GB being used? (1 Reply)
Discussion started by: shorty
1 Replies

4. UNIX for Advanced & Expert Users

will a named pipe always be size 0 on filesystem?

I did cat < myFile >> myPipe I was hoping that if I did ls -l, myPipe would now be holding the contents of myFile, and would be the same size. But it was 0. Also strange was that when I did the command above, cat did not return control back to the shell. Why? thanks (4 Replies)
Discussion started by: JamesByars
4 Replies

5. UNIX for Dummies Questions & Answers

How to increase the filesystem size?

Hi.. I want to increase the file system size of any filesystem online, without using the Volume manager like LVMs, is it possible? & if yes then how? (3 Replies)
Discussion started by: Amol21
3 Replies

6. AIX

filesystem size

i am new in the field 3months to be precise. how do i come up with size, i want to change for the filesystem? assuming there is enough space on the volume group. do i just assign any value? (5 Replies)
Discussion started by: freeman
5 Replies

7. UNIX for Dummies Questions & Answers

Removing some size for filesystem

Hi All, Currently for filesystem /usr/sap/ccms we have allocated 50 GB of size and its mounted. Is there any procedure to remove 10 GB from it without disturbing data and allocate that 10 GB to another file system say /usr/sap/sapdata1. Thanks, Rohan (2 Replies)
Discussion started by: rohanxyz
2 Replies

8. UNIX for Advanced & Expert Users

Physical disk IO size smaller than fragment block filesystem size ?

Hello, in one default UFS filesystem we have 8K block size (bsize) and 1K fragmentsize (fsize). At this scenary I thought all "FileSytem IO" will be 8K (or greater) but never smaller than the fragment size (1K). If a UFS fragment/blocksize is allwasy several ADJACENTS sectors on disk (in a ... (4 Replies)
Discussion started by: rarino2
4 Replies

9. Red Hat

Increase the filesystem size

Hi I am using oracle linux 6.4. My hard drive capacity is 500 GB. my filesystem size onbly 50GB. I would like to extend my filesystem size to around 100GB. I tried many codes but still I am not able. this is the output of df -h : Filesystem Size Used Avail Use% Mounted on... (6 Replies)
Discussion started by: farshad
6 Replies

10. Hardware

Increasing the filesystem size

Hi Guys We have a VM machine, now I want to increase the size of the filesystem. We are running RHEL6 O/S. I have filesystem that is 500GB I want to increase that filesystem to 1.5 TB. The guy who manages the VM increased the size on the VM machine, now how do I make sure that the... (7 Replies)
Discussion started by: Phuti
7 Replies
vxpfto(1M)																vxpfto(1M)

NAME
vxpfto - set Powerfail Timeout (pfto) SYNOPSIS
vxpfto -g diskgroup -t timeout vxpfto [-g diskgroup] -t timeout volume_list vxpfto [-g diskgroup] -o pftostate={enabled|disabled} vxpfto [-g diskgroup] -o pftostate={enabled|disabled} volume_list DESCRIPTION
Powerfail Timeout is an attribute of a SCSI disk connected to an HP-UX host (see the pfto(7) man page). The vxpfto command sets the Power- fail Timeout interval on a set of Volume Manager disks, either all disks in a disk group, or all disks underlying the volumes listed. The first form of the command sets the same PFTO value for all the disks in the specified VxVM diskgroup. In the second form, all disks underlying the given list of volumes are selected, optionally restricted by the disk group specified with the -g option. If you specify a diskgroup, any volume in the list not belonging to the diskgroup is ignored. Use the -o pftostate option to disable or enable PFTO. By default, PFTO is enabled. You can enable PFTO either on all disks in a disk group, or on all disks underlying the volumes listed. If you invoke vxpfto without arguments, it displays a usage message. OPTIONS
-g diskgroup Specifies the disk group for the operation, either by disk group ID or by disk group name. -o pftostate={enabled|disabled} Enables or disables the use of PFTO for IO. -t timeout Specifies the PFTO value in seconds. The value must be zero or a positive integer. Zero represents the system default PFTO value. The default value depends on the disk driver controlling the disk device. volume_list A list of VxVM volume names. List items must be separated by white-space. EXIT CODES
vxpfto returns a zero if successful. If it encounters an error, vxpfto exits and displays a message on standard error. Defined exit codes are: 0 Success. 1 No PFTO value specified. 2 No diskgroup or volume list specified. 3 Illegal PFTO value specified. EXAMPLES
Set the PFTO value on all disks in disk group testdg to 100 seconds: vxpfto -t 100 -g testdg Set the PFTO value to 50 seconds on all disks underlying volume01 and volume02 in disk group testdg: vxpfto -t 50 -g testdg volume01 volume02 Set the PFTO value to 300 seconds on all disks underlying volume01 and volume02, even though they are not in the same disk group: vxpfto -t 300 volume01 volume02 Disable PFTO on all disks in disk group testdg: vxpfto -g testdg -o pftostate=disabled Enable PFTO on all disks underlying volume01 and volume02i in disk group testdg: vxpfto -g testdg -o pftostate=enabled volume01 volume02 SEE ALSO
vxdisk(1M), pfto(7) VxVM 5.0.31.1 24 Mar 2008 vxpfto(1M)
All times are GMT -4. The time now is 01:20 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy