disk performance/usage by logical volume

[John J Burke]

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?

[Mounaam]

Hi,

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

Regards,
Mounaam

[Michael Steele_2]

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

refer to lvols in 2nd section

[PVR]

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.

[Raj D.]

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.

[John J Burke]

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?