Hi,
 
One of our clients has a 4.0 system with several dozen ldevs
in mpexl_system_volume_set (yes, we've told them that isn't a good
idea).  8 drives are on one HPFL string (the rest are non-HPFL).
One of those went "bad" (red fault light), but now appears to be working.
 
However, when they boot up, and do a DSTAT ALL, they see
most of the disks are ok, but all 8 drives on the HPFL string are
in the LONER state (and can't be accessed via file system).
 
The boot-time "mount" messages and XM recovery messages show the drives
as normal ... there's no real clue anything is wrong until the system
finishes booting and we then try to use the drives.
 
The 8 drives are on ldevs 32..39, with names MEMBER34..MEMBER39, and
ldev 34 (MEMBER34) was the one that was temporarily bad.
 
Yes, we've looked at the first 2 sectors of each of the 8 HPFL drives...
they look like valid entries (e.g., MPEXL_SYSTEM_VOLUME_SET, MEMBER32).
 
We've power cycled ... no success.
We've replaced the HPFL controller card ... no sucess.
We've searched HPSL ... no success.
We've booted up with drive 34 turned off ... no sucess.
 
Any ideas?
 
thanks,
Stan