Cannot Remove all Flash Disk Group

[seamusobr1]

When trying to remove a disk group using esxcli vsan storage remove -u 5265713e-a712-9d31-4a8b-b77b5e1bb39e I get the error below

Unable to remove device: Failed to write partition

I have managed to dismount  all of the ssd capacity disks in the management group but cannot dismount the   cache disk. The cache disk is faulty but in vCenter is reporting as mounted but with permanent disk failure

In vcenter it is reported as mounted but with permamant disk failure  will not let me delete the disk or Management group as the cache disk is still mounted

Any help would be gratefully received

[KabirAli82]

Just a long shot... but maybe partedUtil can help you out a bit.

First you will need to find the device:

esxcli storage core device list

Then you could try:

partedUtil delete <diskName> <partNum>

(e.g. partedUtil delete /dev/disks/naa.60001234567890 1)

[TheBobkin]

Hello Seamus,

If it is seen in /dev/disks then try to delete it using:

# dd if=/dev/zero of=/vmfs/devices/disks/<naa.###> bs=1M count=50 conv=notrunc

# partedUtil mklabel /vmfs/devices/disks/<naa.###> msdos

If it can't write to it then it could be in a Read-only state due to a hardware failure (it should state this when trying to overwrite and/or in vmkernel.log at this time).

Bob

[seamusobr1]

Thanks to all those who replied and thanks to the Bobkin who has been really helpful in this post and in others

I managed to reach out to GSS

We rebooted the host in question and disabled the vsan services on boot

He logged back into the host and removed the disk without any of the vsan services running

Thanks again to the community here