Editing Scanco Administration (section)

===Trouble shooting a USB drive===

Sometimes we have problems with USB devices. Check the status of the device to find if it has been allocated already and that there are no current jobs running that may have hung.

The device may look like this:

<pre>
$ sh dev dna

Device                  Device           Error    Volume         Free  Trans Mnt
 Name                   Status           Count     Label         Space Count Cnt
SC3418$DNA7:            Online alloc         0
</pre>

The <code>Online alloc</code> instead of  <code>Online</code> suggests the device is already allocated. So we get a more full output:

<pre>
$ sh dev dna/full

Disk SC3418$DNA7:, device type ST1500LM 003-9YH148 CC9F, is online, allocated,
    file-oriented device, shareable, available to cluster, error logging is
    enabled, device is busy.

    Error count                    0    Operations completed            1424772
    Owner process        "BATCH_357"    Owner UIC                      [SYSTEM]
    Owner process ID        0000A94A    Dev Prot         S:RWPL,O:RWPL,G:R,W:RW
    Reference count                3    Default buffer size                 512
    Total size                1.36TB    Sectors per track                     1
    Total cylinders            31536    Tracks per cylinder                   1
</pre>

This suggests that the owner is process <code>BATCH_357</code>. The <code>357</code> refers to the job that ran on the queue.

<pre>
$ sh que/all
Printer queue HPLJET, idle, on SC3418::"IP_LPD/hpljet", 
mounted form DCPS$DEFAULT (stock=DEFAULT)

Batch queue SYS$ADMIN, idle, on SC3418::

  Entry  Jobname         Username             Status
  -----  -------         --------             ------
    752  RELAY_PUMP_10_MIN_ON
                         MICROCT              Holding until 31-JAN-2025 02:00:00

Batch queue SYS$BACKUP, idle, on SC3418::

Batch queue SYS$BATCH, idle, on SC3418::

Batch queue SYS$FAST, idle, on SC3418::

Batch queue SYS$FE, idle, on SC3418::

Batch queue SYS$SLOW, idle, on SC3418::
</pre>

But there are no jobs running. So let's try manually dismounting the device, but do so as user <code>system</code>:

<pre>
$ dism/abort dna7:
%SYSTEM-F-DEVNOTMOUNT, device is not mounted
</pre>

Well, that didn't work, so let's see if there is a list of running processes, again as user <code>system</code>:

<pre>
$ show user/full
      OpenVMS User Processes at 30-JAN-2025 15:20:04.96
    Total number of users = 2,  number of processes = 3

 Username Process Name    PID     Terminal
 MICROCT  BATCH_357     0000A94A  (Batch)
 MICROCT  MICROCT       0000D2A3  FTA154:  
 SYSTEM   SYSTEM        0000D2A4  RTA1:    (SC3418::MICROCT)
</pre>

Stop the process associated with running the USB device:

<pre>
$ stop/id=0000A94A
$ sh user /full
      OpenVMS User Processes at 30-JAN-2025 18:28:23.65
    Total number of users = 2,  number of processes = 3

 Username Process Name    PID     Terminal
 MICROCT  BATCH_357     0000A94A  (Batch)
 MICROCT  MICROCT       0000D2A6  FTA155:  
 SYSTEM   SYSTEM        0000D2A7  RTA1:    (SC3418::MICROCT)
</pre>

Ok, did that still not work? Try unplugging the USB drive and waiting 30 seconds before plugging it back in. Perhaps that will force the job to end.

<pre>
$ sh dev dna

Device                  Device           Error    Volume         Free  Trans Mnt
 Name                   Status           Count     Label         Space Count Cnt
SC3418$DNA7:            Online               0
</pre>

That seems to have worked!


[[Image:Redirect.jpg|15px]] [[#top|''Return to Contents'']] or [[Main_Page|''Return to Main Page'']]