Unable to use -cons_exempt to empty an RDF group with consistency enabled

Attempting to run the symrdf deletepair -cons_exempt command on all RDF device pairs an RDF group with consistency enabled fails with the error:

The device does not have a valid RDF Consistency state for this operation.

This is working as designed. You cannot use the -cons_exempt command to remove all SRDF devices from an RDF Group when SRDF consistency is enabled.

Device pairs can be removed from an RDF group with the -cons_exempt parameter when consistency is enabled, except if the device pair being deleted is the last SRDF device pair in the group. To remove all the SRDF device pairs or the last device pair from the group, first you must disable consistency on the group. For example:

# symrdf -sid xxx -f pair.txt disable -rdfg 15 -nop

An RDF 'Disable' operation execution is in progress for device
file 'pair.txt'. Please wait...


The RDF 'Disable' operation successfully executed for device
file 'pair.txt'.

# symrdf -sid xxx -f pair.txt suspend -rdfg 15 -nop

An RDF 'Suspend' operation execution is in progress for device
file 'pair.txt'. Please wait...


The RDF 'Suspend' operation successfully executed for device
file 'pair.txt'.

# symrdf -sid xxx -f pair.txt deletepair -rdfg 15 -nop

An RDF 'Delete Pair' operation execution is in progress for device
file 'pair.txt'. Please wait...

    Delete RDF Pair in (1221,015)....................................Started.
    Delete RDF Pair in (1221,015)....................................Done.

The RDF 'Delete Pair' operation successfully executed for device
file 'pair.txt'.

The -cons_exempt flag has been renamed to -exempt in newer Solutions Enabler versions. The following is an example showing this error condition: 

# symrdf -sid xxx list -rdfg 15 

Symmetrix ID: 000xxxxxxxxx

                              Local Device View
----------------------------------------------------------------------------
                    STATUS     MODES                     RDF  S T A T E S
Sym        RDF      ---------  -----  R1 Inv   R2 Inv ----------------------
Dev  RDev  Typ:G    SA RA LNK  MDATE  Tracks   Tracks Dev RDev Pair
---- ---- --------  ---------  ----- -------  ------- --- ---- -------------

345F 20E5   R1:15   ?? RW NR   A..1X       0        0 RW  WD   Suspended
3460 20E6   R1:15   ?? RW NR   A..1X       0        0 RW  WD   Suspended

Total                               -------- --------
  Track(s)                                 0        0
  MB(s)                                  0.0      0.0


Legend for MODES:

 M(ode of Operation)   : A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
 D(omino)              : X = Enabled, . = Disabled
 A(daptive Copy)       : D = Disk Mode, W = WP Mode, . = ACp off
 (Mirror) T(ype)       : 1 = R1, 2 = R2
 (Consistency) E(xempt): X = Enabled, . = Disabled, M = Mixed, - = N/A

# more pair.txt
345f 20e5
3460 20e6

# symrdf -sid xxx -f pair.txt query -sid xxx -rdfa

Symmetrix ID                       : 000xxxxxxxxx    (Microcode Version: 5874)

RDFA Session Number                : 14
RDFA Cycle Number                  : 10965
RDFA Session Status                : Active
RDFA Consistency Exempt Devices    : Yes
RDFA Minimum Cycle Time            : 00:00:30
RDFA Avg Cycle Time                : 00:00:30
Duration of Last cycle             : 00:00:30
RDFA Session Priority              : 33
Tracks not Committed to the R2 Side: 0
Time that R2 is behind R1          : 00:00:43
R2 Image Capture Time              : Sat May 29 14:15:01 2010
R2 Data is Consistent              : True
RDFA R1 Side Percent Cache In Use  :  0
RDFA R2 Side Percent Cache In Use  :  0
R1 Side DSE Used Tracks            : 0
R2 Side DSE Used Tracks            : 0
Transmit Idle Time                 : 00:00:00

Remote Symmetrix ID                : 000xxxxxxxxx   (Microcode Version: 5874)
RDF (RA) Group Number              :  15 (0E)


       Source (R1) View                 Target (R2) View     MODES
--------------------------------    ------------------------ ----- ------------
             ST                  LI      ST
Standard      A                   N       A
Logical       T  R1 Inv   R2 Inv  K       T  R1 Inv   R2 Inv       RDF Pair
Device  Dev   E  Tracks   Tracks  S Dev   E  Tracks   Tracks MDACE STATE
-------------------------------- -- ------------------------ ----- ------------

N/A     345F RW       0        0 NR 20E5 WD       0        0 A..XX Suspended
N/A     3460 RW       0        0 NR 20E6 WD       0        0 A..XX Suspended

Total          -------- --------           -------- --------
  Track(s)            0        0                  0        0
  MB(s)             0.0      0.0                0.0      0.0

Legend for MODES:

 M(ode of Operation)   : A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
 D(omino)              : X = Enabled, . = Disabled
 A(daptive Copy)       : D = Disk Mode, W = WP Mode, . = ACp off
 C(onsistency State)   : X = Enabled, . = Disabled, M = Mixed, - = N/A
 (Consistency) E(xempt): X = Enabled, . = Disabled, M = Mixed, - = N/A

# symrdf -sid xxx -f pair.txt deletepair -rdfg 15 -nop

An RDF 'Delete Pair' operation execution is in progress for device
file 'pair.txt'. Please wait...


The device does not have a valid RDF Consistency state for this operation