System Administration
cancel
Showing results for 
Search instead for 
Did you mean: 

disk performance/usage by logical volume

John J Burke
Occasional Advisor

disk performance/usage by logical volume

Hi,

I have a disk performance issue. I have narrowed this down to two volume groups.

Each only has one disk. Both have multiple raw logical volumes.

I need to identify which raw lvol on my hpux boxes are using the disk and when, and track the performance.

Anyone know how to do this?
5 REPLIES
Mounaam
Trusted Contributor

Re: disk performance/usage by logical volume

Hi,

if you have Glance, take a look to screen "IO By Logical Volume" (key v).

Regards,
Mounaam
Michael Steele_2
Honored Contributor

Re: disk performance/usage by logical volume

pvdisplay -v /dev/disk/c#t#d# | more

refer to lvols in 2nd section
Support Fatherhood - Stop Family Law
PVR
Valued Contributor

Re: disk performance/usage by logical volume

using vgdisplay -v , identify the disks. Then do a pvdisplay -v /dev/dsk/c#t#d# on the disk and identify, which logical volumes are part of the particular disk.

Don't give up. Try till success...
Raj D.
Honored Contributor

Re: disk performance/usage by logical volume

John,

You can figure out from this screen:
In Glance check,
d Disk Detail
i Disk I/O by File System
v Logical Volume Detail


Also from the top pid , using top io ,
you can do a ps -ef on the pid. You will know the process details and subsequently filesystem/lv details from that as well.


Cheers,
Raj.
" If u think u can , If u think u cannot , - You are always Right . "
John J Burke
Occasional Advisor

Re: disk performance/usage by logical volume

Thanks guys,

I have done this with glance. Is there a way to run glance and monitor only the lvols i am interested in, dumping the output to a file?