mt status says “/dev/rmt/1: write protected or reserved.”

May 17, 2013

Filed under: UNIX & Linux — raars @ 11:39 pm

After replacing SAN switch for NetBackup server one tape device was giving error message :

avrd[583]: [ID 213018 daemon.notice] Reservation Conflict status from drive4 (device 5)

Device was /dev/rmt/1cbn
from OS when we run command :

mt -f /dev/rmt/1cbn status

we got an error :
/dev/rmt/1cbn: write protected or reserved

Rebooting machine , removing links , createing again using devfsadm (or drvconfig ;tapes;devlinks) did not help .
Executing simple command :

mt -f /dev/rmt/1cbn forcereserve
helped to solve problem

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