Error running a command. cmd cmd = ['/sbin/btrfs', 'filesystem', 'show', '/dev/disk/by-id/sda3']. rc = 1. stdout = ['']. stderr = ['']

kyle_williams · November 30, 2016, 5:00am

[Please complete the below template with details of the problem reported on your Web-UI. Be as detailed as possible. Community members, including developers, shall try and help. Thanks for your time in reporting this issue! We recommend purchasing commercial support for expedited support directly from the developers.]

Brief description of the problem

[write here]

Detailed step by step instructions to reproduce the problem

[new install. setting username and password and this happens. rockstor sees both drives at install but none after install.]

Web-UI screenshot

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Error Traceback provided on the Web-UI


[Traceback (most recent call last):
  File "/opt/rockstor/src/rockstor/rest_framework_custom/generic_view.py", line 40, in _handle_exception
    yield
  File "/opt/rockstor/src/rockstor/storageadmin/views/disk.py", line 272, in post
    return self._update_disk_state()
  File "/opt/rockstor/eggs/Django-1.6.11-py2.7.egg/django/db/transaction.py", line 371, in inner
    return func(*args, **kwargs)
  File "/opt/rockstor/src/rockstor/storageadmin/views/disk.py", line 218, in _update_disk_state
    p.uuid = btrfs_uuid(dob.name)
  File "/opt/rockstor/src/rockstor/fs/btrfs.py", line 919, in btrfs_uuid
    [BTRFS, 'filesystem', 'show', '/dev/disk/by-id/%s' % disk])
  File "/opt/rockstor/src/rockstor/system/osi.py", line 104, 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 = ['']
]

phillxnet · November 30, 2016, 11:10am

@kyle_williams Welcome to Rockstor.
The errror you have encountered is Rockstor’s current inelegance with dealing with drives with no serial:
It is a pending issue with the documentation:

github.com/rockstor/rockstor-doc

Add drive serial requirements to min sys spec

opened 09:21AM - 10 Nov 16 UTC

closed 06:33PM - 01 Jul 17 UTC

phillxnet

Thanks to forum users Christopher_Nicol and dison4linux in the following forum t…hreads for their recent reports on this shortcoming. Given Rockstor's reliance on serial numbers to track drives it should be stated in the minimum system requirements section, especially for the system drive as then we simply error out rather than with other drives where we are able to display a message explaining the circumstance. Please update the following forum threads on the resolution of this issue: https://forum.rockstor.com/t/error-on-vmware-install/2311 and https://forum.rockstor.com/t/error-running-a-command-cmd-sbin-btrfs-filesystem-show-dev-disk-by-id-sda3/2314

That rockstor requires drives to have serial number as without them they cannot be reliable tracked. Still an inelegance here but this only happens with system drives having no serial. If the same is found in data drives there is a big red warning but I’m afraid I overlooked system drives having no serial.

Fix is to assign a unique serial to that and all other Rockstor drives.

Please also see:

and:

Referenced in the sighted GitHub issue.

I have added this thread to the same issue so that it might be updated accordingly.