Well, after yesterday’s episode with our tape library today continued to be a taxing day. After restarting a few exports that were hanging yesterday due to our library problems, something similar returned. TSM was unable to locate a few (two to be exact) tapes in the library.
ANR8300E I/O error on library LIB3584 (OP=00006C03, CC=314, KEY=05, ASC=3B,
Description=The source slot or drive was empty in an attempt to move a
volume). Refer to Appendix C in the 'Messages' manual for recommended action.
ANR8312E Volume 000400 could not be located in library LIB3584.
ANR8358E Audit operation is required for library LIB3584.
ANR8381E LTO volume 000400 could not be mounted in drive DR6 (/dev/rmt0).
ANR1402W Mount request denied for volume 000400 - volume unavailable.
ANR1410W Access mode for volume 000400 now set to "unavailable".
Yet the library reported the tapes were still inventoried. *shrug* Here we are again, looking completely baffled. After a short while trying to figure out what to do, we went through the Data Cartridge inventory again. As it turns out, through putting the library in “Pause”-Mode and restarting TSM multiple times, TSM apparently completely forgot that it had these tapes put into drives.
After manually moving the tapes back to their home slot via the management interface of the TS3500 and setting the volume access mode back to read-write, everything is fine now I could finish my pending exports!