ITEM: AY0485L

3490 Tape drive-lmcpd hanging

Question:

model 7015-990
3490 Tape drive-lmcpd hanging

Response:

Customer Contact

Response:

Env:    7015-990, ethernet, SCSI-2 F/W DE, 3494 - 2 3590s in each
        3494 - both drives in a 3494 are on the same SCSI bus, UniTree.
Desc:   The command lmcpd called by UniTree is hanging.  The autoloader
        is not operating correctly.
Act:    Transferring this item to SYSTAPE for added assistance.
Next:   Place item in SYSTAPE's Q.
Test:   N/A.

Response:

Env:
AIX 3.2.5
Atape.driver 2.4.4.0
atldd.driver 2.4.1.0

Desc:
Customer is using the Unitree product and it is freezing up when 
accessing 3494.

Response:

Ordered atldd.driver for customer

Response:

Response:

Customer has shut down UniTree product.

He does a mount command through mtlib:

mtlib -l /dev/lmcp1 -f /dev/rmt7 -V 000011 -m

The command errors out with:
mount operation failed, device not available.
Yet the device is available when he does,
lsdev -Cc tape

Had his issue this command for the drive that was not working:

mtlib -l /dev/lmcp0 -f /dev/rmt7 -qD

Device data:
        mounted volser....none
        device category...0000
        device state......Device installed in the library.
                          ACL is installed.
        device class......10

He issued this same command on a drive that was working and got
this:

Device data:
        mounted volser....none
        device category...0000
        device state......Device installed in the library.
                          Device available to Library.
                          ACL is installed.
        device class......10

( Not sure about device class )

On the system with the problem,
the 'Device available to Library.' line does not appear.

Next:
Customer will try to make device available through the 3494 console.

Response:

Response:

On the control work-station the customer made the drive available
to the library:

Service Option
        Availability
                Change Availability
                        (Check Boxes will appear)

Customer checked the drives as available then the mtlib command
worked.

Next:
cwca

Response:

Closing with Customer Approval

Response:

Response:

Env:    
      7015-990, ethernet, SCSI-2 F/W DE, 3494 - 2 3590s 
      3494 - both drives in a 3494 are on the same SCSI bus, 
      Atape.driver 2.4.4.0
      atldd.driver 2.4.1.0
.Desc:
  Customer runs unitree, sometimes it will hang up the 3494.
  Then the customer logs these error messages
.error id : c6aca566
resource name : lmcpd
error description : message redirected from syslog
user causes : operator redirected syslog messages to error log
syslog message : Error Sending command to lmcpd command time out
.The customer then noticed another lmcpd running, which was a child
process of the lmcpd (main one)  Once the customer kills the child      
process normally the mtlib commands will work again.
.Next Action:
  Queue to iodrvr



Support Line: 3490 Tape drive-lmcpd hanging ITEM: AY0485L

Dated: May 1996 Category: N/A

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