Disabled drives??

After changing some parts of SAN environment, NW failed in reading tapes in drives.
The error messages were as follows:

(warning) /dev/rmt/1cbn reading: read open error: drive status is There is not a tape in the drive
…
(warning) /dev/rmt/0cbn opening: DRIVE_STATUS_NEED_INIT
…
(warning) /dev/rmt/0cbn reading: read open error: drive status is The drive is not ready - it requires an initialization
…
(warning) /dev/rmt/1cbn reading: read open error: drive status is There is not a tape in the drive
…
(warning) /dev/rmt/1cbn reading: read open error: drive status is There is not a tape in the drive
…
(warning) Device /dev/rmt/1cbn is automatically disabled


Here are mixed messages from /dev/rmt/0cbn and /dev/rmt/1cbn, but both (in fact all 3 drives) have same behavior.

jbverify –v –v –v –v –v gives output as follow:
about to get JB info from NSR server...
 successfully retrieved JB info from NSR server.

 Processing jukebox devices...

 Processing jukebox IBM3584:

  checking if any of the drives are pre-loaded...
  checking device /dev/rmt/0cbn...
  checking device /dev/rmt/1cbn...
  checking device /dev/rmt/2cbn...

 Testing drive 1 (/dev/rmt/0cbn) of JB IBM3584
  no slot was specified. Searching for slot...
  found slot 1
  about to load from slot 1 to drive 1
  successfully loaded from slot 1 to drive 1
  found load sleep to be 5 secs for this JB

  about to test device /dev/rmt/0cbn
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 1)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 2)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 3)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 4)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 5)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 6)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 7)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 8)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 9)...
 open(/dev/rmt/0cbn): I/O error
  device not ready yet. Retrying (trial no. 10)...

  failed to detect loaded volume on drive /dev/rmt/0cbn
 even after   10 tries. Giving up...
 Ejecting tape...
jbverify: NetWorker error: read open error: drive status is There is not a tape in the drive


What could be possible problem and how to solve it?
S

You made changes to the SAN and the drive handles all changed. You should reconfig your drives and turn persistent binding on the SAN

Do you mean reconfigure on the system level or on the NetWorker level.
If system does recognize all drives correctly, would be helful to reinstall al devices, including jukebox on the Networker Server??

We are talking about NetWorker. You obviously load the wrong device.

First you need to determine if the OS can even see the drives.

I found the problem.
Customer has redundant fibre connections to drives and when they changed FC cables, they missed something, so NW worked with wrong devices scidev@4.0.0 instead scidev@2.0.0. Correct cabling solved the problem!!

Thanks to all for useful tips.
S