When increasing the f.s. since on any LUN you need to also extend the file system. 

You will not see the extra space until you resize your file system and extend it to accommodate the new space.

On Mon., Aug. 9, 2021, 2:36 p.m. Nir Soffer, <nsoffer@redhat.com> wrote:

On Mon, Aug 9, 2021 at 7:32 PM Shantur Rathore
<shantur.rathore@gmail.com> wrote:
>
> Hi all,
>
> I have an iSCSI Storage Domain for VMs and need to increase storage.
> To do this, I increased the size of LUN on iscsi storage server and tried to refresh the size of Storage Domain as per
>
> https://www.ovirt.org/documentation/administration_guide/index.html#Increasing_iSCSI_or_FCP_Storage
>
> "Refreshing the LUN Size" section
>
> I cannot see the "Additional Storage Size" column or any other option to refresh the LUN size.

Since you have a storage domain using this LUN, you need to follow the
instructions
for "Increasing an Existing iSCSI or FCP Storage Domain".

The "Refreshing the LUN Size" section is for increating a LUN which is
not part of
the storage domain.

When you open the "Manage domain" dialog, oVirt performs SCSI rescan
which should discover the new size of the LUN. Then oVirt check if the
multipath map matches the size of the LUN, and if not it will resize the map
to fit the LUN.

Finally it shows a button to resize the PV on top of the multipath device.
When you select this button and confirm, oVirt will resize the PV,
which will resize
the VG.

Nir
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