Error Message

VxVM vxdisk ERROR V-5-1-5433 Device IBM_VSCSI0_2: init failed:
Disk sector size is not supported

Details

You can get this kind of errors trying to init a vscsi disk by VxVM vxdisk init or vxdisksetup.

Issue

It can be a weird scenario but, if you clone a cdsdisk formatted disk over a vscsi AIX disk, you can have problems trying to re-initialize the vscsi disks by VxVM vxdisk init or vxdisksetup.

This is due to the fact that vscsi disks are only supported in aixdisk format, but as they've been cloned, the cdsdisk private region format is preserved so vxvm is unable to re-init those disks.

Solution

You can clean the private region of the disk simply by using "dd". In the example below we clean the first 1MB of the private region (starting in offset 256) and the disk will go back to "online invalid":

# dd if=/dev/zero of=/dev/hdisk11 bs=1024 skip=256 count=1000

Then you can run again the vxdisksetup to properly initialize the disk.


 

 

how to clean cdsdisk format from vscsi disks