requested media id is in use
备份、恢复、或者执行bpexpdate，提示“requested media id is in use”，随机进入排队或者错误状态。
通过检查发现Drive并未被使用，可以通过命令确认：
vmoprcmd
nbrbutil -dump
如果出现如下信息，可以确认Drive被Media Server占用。
MDS allocations in EMM: MdsAllocation: allocationKey=11139 jobType=2 mediaKey=1110097 mediaId=0513L3 driveKey=0 \ driveName= drivePath= stuName= masterServerName=netbackup01 mediaServerName=netbackup01 \ ndmpTapeServerName= diskVolumeKey=0 mountKey=0 linkKey=0 fatPipeKey=0 scsiResType=0 serverStateFlags=0 MdsAllocation: allocationKey=11125 jobType=1 mediaKey=1110090 mediaId=00075L \ driveKey=2000005 driveName=IBM.ULTRIUM-HH4.001 drivePath={3,0,1,0} stuName=netbackup01-hcart-robot-tld-0 \ masterServerName=netbackup01 mediaServerName=netbackup01 ndmpTapeServerName= diskVolumeKey=0 mountKey=0 \ linkKey=0 fatPipeKey=0 scsiResType=1 serverStateFlags=1 |
通过命令可以释放：
nbrbutil -releaseMDS 11139 |
或者通过命令释放所有：
/usr/openv/netbackup/bin/admincmd/nbrbutil –releaseAllocHolds /usr/openv/netbackup/bin/admincmd/nbrbutil –resetAll |
