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Received below error when trying to scan for disk because no disk showed up.
click on storage> disk> Rescan
Traceback (most recent call last): File "/opt/rockstor/src/rockstor/rest_framework_custom/generic_view.py", line 41, in _handle_exception yield File "/opt/rockstor/src/rockstor/storageadmin/views/disk.py", line 377, in post return self._update_disk_state() File "/opt/rockstor/eggs/Django-1.8.16-py2.7.egg/django/utils/decorators.py", line 145, in inner return func(*args, **kwargs) File "/opt/rockstor/src/rockstor/storageadmin/views/disk.py", line 322, in _update_disk_state p.uuid = btrfs_uuid(dob.name) File "/opt/rockstor/src/rockstor/fs/btrfs.py", line 1055, in btrfs_uuid [BTRFS, 'filesystem', 'show', '/dev/disk/by-id/%s' % disk]) File "/opt/rockstor/src/rockstor/system/osi.py", line 115, in run_command raise CommandException(cmd, out, err, rc) CommandException: 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', '']