Whether you can stop migrating the GAD pair and return
the operations to the source GAD pair depends on if you are attempting to stop the
data migration before or after you suspend the temporary GAD pair by specifying
the S-VOL.
Stopping data migration after suspending the temporary GAD pair by specifying
the S-VOL
If you are stopping data migration after suspending the temporary GAD pair by specifying
the S-VOL, the operations cannot be returned to the source GAD pair.
After the completion of the copy operation for the target GAD pair created on
the target storage systems, the operation is enabled on the target storage
systems
Stopping data migration before suspending the temporary GAD pair by specifying
the S-VOL
If you are stopping data migration before suspending the temporary GAD pair by specifying
the S-VOL, the operations can be returned to the source GAD pair by performing
the following procedure
-
Suspend the temporary GAD pair by specifying the P-VOL.
Command example:
pairsplit -g oraHA01 -IH0
-
Verify that the temporary GAD pair has been suspended.
Command
example:
pairdisplay -g oraHA01 -fcxe -IH0
Group PairVol(L/R) (Port#,TID, LU),Seq#, LDEV#.P/S,
Status,Fence,%, P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W
QM DM P PR
oraHA01 dev01(L) (CL1-C-0, 0, 0)411111 1111.P-VOL PSUS
NEVER , 55 1111 - - 1 1 - - - L/L - D
N D
oraHA01 dev01(R) (CL1-C-0, 0, 0)833333 1111.S-VOL SSUS
NEVER , 100 1111 - - 1 1 - - - B/B - D
N D
-
Resynchronize the source GAD pair by specifying the P-VOL.
Command example:
pairresync -g oraHA00 -IH0
-
Verify that the resynchronization of the source GAD pair is
complete and the pair status has been migrated to PAIR.
Command
example:
pairdisplay -g oraHA00 -fcxe -IH0
Group PairVol(L/R) (Port#,TID, LU),Seq#, LDEV#.P/S,
Status,Fence,%, P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W
QM DM P PR
oraHA00 dev00(L) (CL1-C-0, 0, 0)411111 1111.P-VOL PAIR
NEVER , 100 2222 - - 0 1 - - - L/M - D
N D
oraHA00 dev00(R) (CL1-C-0, 0, 0)422222 2222.S-VOL PAIR
NEVER , 100 1111 - - 0 1 - - - L/M - D
N D
-
If you want to cancel the GAD pair migration completely, delete the suspended
temporary GAD
pair.
Command example:
pairsplit -g oraHA01 -S -IH0
-
If you perform step 5, verify that the temporary GAD pair has been
deleted.
Command
example:
pairdisplay -g oraHA01 -fcxe -IH0
Group PairVol(L/R) (Port#,TID, LU),Seq#, LDEV#.P/S,
Status,Fence,%, P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W
QM DM P PR
oraHA01 dev01(L) (CL1-C-0, 0, 0)411111 1111.SMPL ----
------,----- ----- - - - - - - - -/- - -
- -
oraHA01 dev01(R) (CL1-C-0, 0, 0)833333 1111.SMPL ----
------,----- ----- - - - - - - - -/- - -
- -
Note: If you skip step 1 and
perform step 3, the source GAD pair is not migrated to the PAIR status. In
this case, perform step 3, and then step 1.