ADSM device access error

[cahir]

After a power cycle where the server (AIX 4.3.3, ADSM 3R1), external disks, and two 7337's were all turned off, ADSM does not seem to be able to access any of the drives any more.

ADSM would report the following error when trying to read from a tape:



ANR8779E Unable to open drive /dev/mt3, error number=2



I can write and read tapes from the command line with tar, and the smit diags reported no problems. Next I tried deleting the drives in ADSM, but on readding them, I get the following error:



adsm> define drive autodltlib2 drive03 device=/dev/mt2 element=116

ANR8420E DEFINE DRIVE: An I/O error occurred while accessing drive DRIVE03



If I change it to be /dev/rmt2 it works, but then I get an error when it tries to use the drive:



adsm> define drive autodltlib2 drive03 devi=/dev/rmt2 online=yes element=116

ANR8404I Drive DRIVE03 defined in library AUTODLTLIB2.



06/25/04 12:20:03 ANR4571E Database backup/restore terminated - insufficient

number of mount points available for removable media.





The drives were defined with /dev/mtX before, and were working before the shutdown. Anyone have any ideas?



Steve Cochran

Dartmouth College

 

[rvandenzel]

Check to make sure that /dev/rmtX really corresponds to the correct element number.

I've had trouble with this before, after an AIX upgrade all tape-devices were mixed up due to the AIX cfgmgr.