Error on trying to expand data store on iSCSI volume

[jjlolo]

Hi, I have ESXi 6.5 running using a data set on a SYNOLOGY iSCSI Disk.

I expanded the iSCSI disk, but can not get the data set to expand.  ESXi sees the extra space, but I can't expand the current volume by selecting increase data store size- I simply get a message saying it can can not.  I can create a new data set.

I tried doing this while the machine was in maintenance mode

HELP!

[dineshgoundar]

Try logging in directly to an ESXi host and expanding the datastore

[dekoshal]

1.SSH to ESXi host

2. Run command tail -f /var/log/vmkernel.log

3. Try To expand the datastore from GUI.

4. Capture the output of the command in step 2

5. paste the capture log output here.

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Best Regards,

Deepak Koshal

CNE|CLA|CWMA|VCP4|VCP5|CCAH

[dekoshal]

You can also try to expand it from command line

Grow the VMFS Datastore in to the new space using the vmkfstools --growfs command, specifying the partition containing the target VMFS Datastore twice.
# vmkfstools --growfs "/vmfs/devices/disks/Device:partition" "/vmfs/devices/disks/Device:partition"
For example:
# vmkfstools --growfs "/vmfs/devices/disks/mpx.vmhba0:C0:T0:L0:3" "/vmfs/devices/disks/mpx.vmhba0:C0:T0:L0:3"

Growing a local datastore from the command line in vSphere ESXi (2002461) | VMware KB

If you found this or any other answer helpful, please consider the use of the Correct or Helpful to award points.

Best Regards,

Deepak Koshal

CNE|CLA|CWMA|VCP4|VCP5|CCAH

[jjlolo]

What solved it for me was running vi client and expanding the volume there where it worked automagically.