Recovering from a failure that occurred during phase 3 on the primary storage system of the source GAD pair

Global Active Device for VSP One Block

Version

10.5.x

File Size

25537 KB

Audience

anonymous

Part Number

MK-23VSP1B011-11

ft:lastEdition

2026-06-23

Recover from the failure on the storage system, and then resume the operation on the P-VOL of the source GAD pair.
Suspend the target GAD pair by specifying the P-VOL.
Command example:
```
pairsplit –g oraHA02 –IH2
```

Verify that the target GAD pair has been suspended.

Command example:

pairdisplay –g oraHA02 –fcxe –IH2
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
oraHA02 dev02(L) (CL1-C-0, 0, 0)833333 1111.P-VOL PSUS
NEVER , 55 2222 - - 2 1 - - - L/L - D
N D
oraHA02 dev02(R) (CL1-C-0, 0, 0)844444 2222.S-VOL SSUS
NEVER , 100 1111 - - 2 1 - - - B/B - D
N D

Delete the target GAD pair.
Command example:
```
pairsplit –g oraHA02 –S –IH2
```

Verify that the target GAD pair has been deleted.

Command example:

pairdisplay –g oraHA02 -fcxe –IH2
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
oraHA02 dev02(L) (CL1-C-0, 0, 0)833333 1111.SMPL ----
------,----- ----- - - - - - - - -/- - -
- -
oraHA02 dev02(R) (CL1-C-0, 0, 0)844444 2222.SMPL ----
------,----- ----- - - - - - - - -/- - -
- -

Verify that the pair status (I/O mode) of the temporary GAD pair is PSUE(Local) for the P-VOL and COPY(Block) for the S-VOL.

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 PSUE
NEVER , 55 1111 - - 1 1 - - - L/L - D
N D
oraHA01 dev01(R) (CL1-C-0, 0, 0)833333 1111.S-VOL COPY
NEVER ,----- 1111 - - 1 1 - - - B/B - D
N D

Forcibly delete the S-VOL of the temporary GAD pair by deleting the virtual LDEV ID.
Command example:
```
pairsplit –g oraHA01 –RF –IH2
```
Forcibly delete the P-VOL of the temporary GAD pair by leaving the virtual LDEV ID.
Command example:
```
pairsplit –g oraHA01 –SFV –IH0
```

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 ----
------,----- ----- - - - - - - - -/- - -
- -

Verify that the virtual LDEV ID remains for the P-VOL of the source GAD pair.
Command example:
```
raidcom get ldev –ldev_id 0x1111 –IH0
(Omitted)
LDEV : 1111
(Omitted)
```
Verify that the GAD reserve attribute is assigned to the virtual LDEV ID of the S-VOL of the temporary GAD pair.
Command example:
```
raidcom get ldev –ldev_id 0x1111 –IH2
(Omitted)
LDEV : 1111
VIR_LDEV : ffff
(Omitted)
```
Resynchronize the source GAD pair by specifying the P-VOL.
Command example:
```
pairresync –g oraHA00 –IH0
```

Wait until the copy operation for the source GAD pair is complete, and then verify that the pair status has changed 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

Restart data migration from the beginning.