This is an old note about detecting when a mirror volume has a problem,
the only reply to which was that one can stop the server and do an AUDIT
DB, which may take days, obviously an unacceptable method.  Otherwise,
I've determined that, even at restart, the server sends NO message saying
that a mirror volume is offline:  One must do a 'q dbvol' or 'q logvol' to
get the info.

To my mind, this makes mirroring _practically_ useless, in the real
meaning of the word.  IBM claims it improves perforamance, but I've seen
no evidence for this either.

This is like a RAID disk which doesn't signal any error when a disk
fails.  Can you imagine such a thing?  (Unfortunately, I can.)

:-(    John
--------------------------------------------------------------
John O'Neall                     e-mail:  jon AT in2p3 DOT fr
John O'Neall                     e-mail:  jon AT in2p3 DOT fr
Centre de Calcul de l'IN2P3      phone:   +33 (0)4 78 93 08 80
Villeurbanne, France             fax:     +33 (0)4 78 94 30 54