| Knowledge Base |
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| Mainframe Appliance for Storage |
Symptom The following sequence of messages is displayed on the Host every time a certain virtual tape is mounted by the MAS: IEF233A M XXXX,PRIVAT,SL,jobname,stepname,dsnNote that there is no reason code associated with the IEC502E message, or any other explanation being displayed on the Host console for the volume rejection. On the MAS, the only error message displayed is "MAS484W: Mount loop, mount ignored", because the Host keeps asking for the same volser (PRIVAT) over and over. Resolution One possible explanation for this is that a tape with the same volser being mounted by the MAS is already in use on another drive on the Host. This situation should not occur on a properly configured system, but it is conceivable that it could happen under certain circumstances:
You can check whether the volume being mounted by the MAS is already mounted on the Host by entering the following MVS console command, where volser is the volume serial number being mounted by the MAS and being rejected by the Host: D GRS,RES=(SYSZVOLS,volser)
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