No show disk in rescan

[phillxnet (Philip Guyton)]

@Eduardo_Huera Welcome to the Rockstor community.
Yes we need to improve the error handling / messaging on this one.

Essentially your VM architecture/config is not giving your drives unique serials such as is the case with real hardware.
Please see my response in the following recent forum thread:

Error running a command. cmd = /sbin/btrfs filesystem show /dev/disk/by-id/sda3. rc = 1. stdout = ['']. stderr = ['ERROR: not a valid btrfs filesystem: /dev/disk/by-id/sda3', '']

@VINOTH Welcome to the Rockstor community. This error is due to no serial on the system disk. Please see the most recent forum thread on this issue and how you might add a serial via your virtual machine manager (presumably VMWare): We have a pending rockstor-doc pull request: to add this to our Minimum system requirements Hope that helps. Essentially an artefact of VMWare failing to give drives a unique identifier by default such as is the case with real drives.