PROBLEM:  (MGO27465A) (PATCH ID: OSF445-055)
********

This patch fixes a problem when the type of SCSI device dynamically changes,
which can result in a kernel memory fault or memory corruption panic.  The
sense inquiry buffer size is allocated too small.


A typical stack trace:
>  0 stop_secondary_cpu   src/kernel/arch/alpha/cpu.c : 608
   1 panic                src/kernel/bsd/subr_prf.c : 751
   2 event_timeout        src/kernel/arch/alpha/cpu.c : 1183
   3 xcpu_puts            src/kernel/bsd/subr_prf.c : 895
   4 printf               src/kernel/bsd/subr_prf.c : 423
   5 panic                src/kernel/bsd/subr_prf.c : 804
   6 closef               src/kernel/bsd/kern_descrip.c : 1973
   7 exit                 src/kernel/bsd/kern_exit.c : 1021
   8 rexit                src/kernel/bsd/kern_exit.c : 822
   9 syscall              src/kernel/arch/alpha/syscall_trap.c : 627
  10 _Xsyscall            src/kernel/arch/alpha/locore.s : 1505

Panic "closef: f_count not 1" due to corruption of 'file' structure
PROBLEM: (MGO64536A) (PATCH ID: OSF445-252)
********
When the "aseagent" starts a service, it pings the all the devices associated
the service. In case of a tape device, the stacktrace of the "aseagent" looks
like this while it is waiting for a response from the device ...
   0 thread_block
   1 mpsleep     
   2 CAM_CCMN_send_ccb_wait
   3 cam_rci_send_ccb     
   4 cam_rci_ping_dev    
   5 cam_rci_process_ccb
   6 cam_process_rci   
   7 ctape_ioctl
   8 SCSI_ping_tape 
   9 PING_device   
  10 am_handle_ioctl
  11 am_ioctl      
  12 spec_ioctl
  13 vn_ioctl
  14 ioctl_base
  15 ioctl
  16 syscall
  17 _Xsyscall

If the aseagent is interrupted with a signal at this point, some devices can
freeze up as seen in the following entries in "daemon.log"

  es5701a_mc Agent Notice: starting service es5799

  es5701a_mc Agent Notice: didn't reserve device
  es5701a_mc Agent Error: AM can't reserve device /dev/rmt1h
  es5701a_mc Agent Warning: can't reserve /dev/rmt1h

  es5701a_mc Agent Warning: AM can't ping /dev/rmt5h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt5h'
  es5701a_mc Agent Warning: can't reserve /dev/rmt5h

  es5701a_mc Agent Notice: didn't reserve device
  es5701a_mc Agent Error: AM can't reserve device /dev/rmt6h
  es5701a_mc Agent Warning: can't reserve /dev/rmt6h

  es5701a_mc Agent Warning: AM can't ping /dev/rmt11h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt11h'
  es5701a_mc Agent Warning: can't reserve /dev/rmt11h

  es5701a_mc Agent Warning: AM can't ping /dev/rmt1h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt1h'

  es5701a_mc Agent Warning: AM can't ping /dev/rmt5h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt5h'

  es5701a_mc Agent Warning: AM can't ping /dev/rmt6h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt6h'

  es5701a_mc Agent Warning: AM can't ping /dev/rmt11h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt11h'

  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt1h
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt5h
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt6h
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt11h

  es5701a_mc Agent Error: can't unreserve device (5)
  es5701a_mc Agent Warning: AM can't ping /dev/rmt1h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt1h'
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt1h
  es5701a_mc Agent Error: can't unreserve device /dev/rmt1h

  es5701a_mc Agent Error: can't unreserve device (5)
  es5701a_mc Agent Warning: AM can't ping /dev/rmt5h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt5h'
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt5h
  es5701a_mc Agent Error: can't unreserve device /dev/rmt5h

  es5701a_mc Agent Error: can't unreserve device (5)
  es5701a_mc Agent Warning: AM can't ping /dev/rmt6h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt6h'
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt6h
  es5701a_mc Agent Error: can't unreserve device /dev/rmt6h

  es5701a_mc Agent Error: can't unreserve device (5)
  es5701a_mc Agent Warning: AM can't ping /dev/rmt11h
  es5701a_mc Agent Warning: can't reach device '/dev/rmt11h'
  es5701a_mc Agent ***ALERT: possible device failure: /dev/rmt11h
  es5701a_mc Agent Error: can't unreserve device /dev/rmt11h


PROBLEM: (MGO67636A) (PATCH ID: OSF445-251)
********
This patch fixes the problem where tape read/write operations fail with
 following repetitive binary.errorlog message:
 Entry type                      199. CAM SCSI Event Type
 .
 Class                           x01  Tape
 Subsystem                       x01  Tape
 Number of Packets                 4.
 .
 Routine Name                         ctape_strategy

 ------ Packet Type ------       256. Generic String

                                      Device state flags indicate a Reserve is
                                      Pending


PROBLEM: () (PATCH ID: OSF445-723)
********
Tapes with SCSI versions greater than 2 will not function properly
without these changes.