Disk issue

[Alex Lavrov.]

Not sure if it's LVM ...

I had a LUN in Netapp, 34GB.
When I do disk info I see 34GB, untill now it's OK.

I changed the LUN to 8GB, but when I do diskinfo, I still get 34GB ...

Am I missing something?

Thanx.

[Naveej.K.A]

Hi,

I beleive you have unmounted/removed the filesystem, removed/exported the VG...

rmsf -H hardware path
and then
insf -C disk

Recreate the PV, VG, LV, FS again.

Regards,
Naveej

[Devender Khatana]

Hi,

Just trying rescanning it. HP Ux does not support any feature which allows it to adjust it with changing sizes of physical devices. So probably you system is still using the old information. If ioscan do not solve this try removing and recreating device file using rmsf and mksf.

HTH,
Devender

[Alex Lavrov.]

I already tried all the above, it didn't help.

There is no PV there yet.

[Naveej.K.A]

Hi,

Does the ioscan output shows correct for the particular device file???

Regards,
Naveej

[Alex Lavrov.]

Yea, it didn't change since then ...

I think there is something wrong with the storage.

[Devender Khatana]

Hi,

It seems to be a storage issue only. As recreating device file should show correct size only. Check your storage.

HTH,
Devender

[Naveej.K.A]

Hi,

Is it possible for you to delete the LUN and create another LUN with a different LUN number (so that the host gets a different device file) and then see if diskinfo throws you the correct info!!!

With best wishes,
Naveej

[Bharat Katkar]

HI Alex,

Is there something like commiting changes (On Filer end) ?? Just guessing ....not much aware of filer.

Regards,

[Steven E. Protter]

Seems like this is a non hp array. Either way, booting the system should update the array size.

Try ioscan -fnC disk or regular ioscan to see if it updates.

I also find sometimes:

sam
disk and filesystms
disk information

Causes the system to run commands that updates these figures.

Maneshmah?

SEP

[Geoff Wild]

Steps should have been:

pvremove /dev/rdsk/cXtXdX

If it is part of a vg - then you need to vgreduce it first...

rmsf /dev/rdsk/cXtXdX
rmsf /dev/dsk/cXtXdX

Then, resize LUN

Then,
ioscan -fnC disk
insf -e

Sometimes - re-ioscan: ioscan -fnC disk
pvcreate /dev/rdsk/cXtXdX

diskinfo /dev/rdsk/cXtXdX

Rgds...Geoff

[Tim D Fulford]

Hi

reducing the LUN size is usually a bad idea. As an example, LVM likes to have headders and foorters on it's disks, so by reducing the LUN on the NetApp will not update the LVM stuff. Similar things happen for VxFS flesystems... You really need to backup data, remove filesystems, logical volumes & volume group & delet LUN on NetApp/filer. Then re-create LUN, re-creat VG & LV & restore data...

Regards

Tim

[Alex Lavrov.]

Thanx for the replies!

Actually it was bunch of problems, one of them misconfiguration in the storage ...