Troubleshooting Support Request Tperrno = Robot Operation Failed Easily

December 23, 2021 By Brock Radcliffe-Brown Off

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Recently, some of our users told us that the robot did not fire when requesting media tperrno =.

Item: 100047734

Last Published: 26.05.

Reviews: 0 0

Product (s): Appliances, NetBackup

How To Check “Error While Requesting Media, TpErrno = Robot Operation Failed”

This article provides a new starting point for understanding and exploring “ media request failed, TpErrno = robot operation failed ”

To edit a videotape, several things have to happen. A great tape is mounted not just because it is physically in the pump, it is mounted only after the NetBackup AVRD daemon has successfully read the h2 tags from the tape and the result is successfully returned to NetBackup.

This really applies to VTL as it is a physical setup.

NetBackup is requesting a SCSI reservation for the appropriate drive.
NetBackup requests a tape mount through a media server using a TLDD process.
TLDD forwards the TL requestDCD on the real control host of the robot. If the TV server is not the host descriptor of the robot, the TLDD on the media hosting server will send a request through the provider to the TLDCD on the host host of the robot.

On the

tldcd, the robot control host sends the scsi CDB 0xa5 MOVE MEDIUM command to the library.
The library moves each of the tapes we requested from the “vault” to the tape drive.
NetBackup is sending CDB 0x1d SEND DIAGNOSTIC to the scsi reader; a valid and appropriate response is required.
NetBackup just runs scsi CDB 0x00 Test Unit Ready over and over – once the TUR finally gets the final 0x00 READY results, then only we both know the tape is actually physiologically and correctly loaded into the drive.
AVRD reads the title of the movie from the tape, it contains, among other things, the media ID of the tape – it must match the Media ID we requested, the security check shows that we definitely have the required tape.

fail

Any of these steps will most likely result in flaxit will not mount and will be available for selection — for example, if a failure occurs in step 5 or 6, even though the tape is physically in the drive, NetBackup has determined that this is not possible. received. an acknowledgment is attached and this will cause “ Robot Loading Failed ” even if the robot physically inserts its tape into the drive.

a) Use tpreq -m -f / tmp / TAPE (if windows -f C: TAPE)
(-f is a special temporary file)

Use

b) robtest for replacing a tape in a drive for the m sx dy “robust command”, where x is the slot number to move the tape and b is the drive number.

method a) Load the tape just like NetBackup does for a real job and creates a tpreq job opportunity in Activity Monitor. When you’re done, you can either cancel the tpreq job in Activity Monitor or run tpunmount -f where is the tmp file originally created in the tpreq command).

Method b) downloads the tape completely “outside” NetBackup, regardless of what robtest is involved in, sends a scsi CDB 0xa5 MEDIUM move (to unload ud s . run robtest, where y is the type of disk number and x is your current slot number)

In l Otherwise, the tape should be moved to the drive if successful, and after a short time, the media ID should appear next to the drive in the internal output of vmoprcmd.

With tpreq you can switch to monitoring the activity that is used to load the feed. To test a particular drive, you will have to do LOW turns that you don’t want to use. NetBackup uses tape drives in some way, so it cannot specify an exclusive drive.

With robtest, you enter an incredible drive number like m s1 d2, which in turn will move the tape to slot 1 on Robot 2

If you use either of these methods, this drive will end up with a tape:

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Here we see a specific Mediaid (AA0010) in the RecMID and ExtMID fields, which is real for the tape in the correct library.

ExtMID (External Media Identifier) denotes a physical barcode on an adhesive strip, an “offline” strip (if only tape drive (s) and small robot or itsPresence, this field is often empty).

RecMID (Recorded Media ID) are Mediaid h2 tags recorded on the tape – a 1 KB document block at the beginning of the entire tape. This should always be done without the possibility of attaching the tape itself.

First of all, we are trying to test the idea that we see the media ID in the main RecMID on the first field of each disk. If it is not present, not everyone will be able to edit a specific tape and will not have the message “ Robot operation error ” even if the videotape may be in the drive.

If you’ve used tpreq do and don’t see the mounted tape, try robtest and make sure the tape is inserted into at least one drive. If the feed is displayed on an input device, manually via the feed header using ‘dd’ (unix), optionally ‘nt_ttu’ (Windows).

If the problem is more detailed, other entries are needed: