- Recover from the failure on the storage system.
-
Verify that the pair status (I/O mode) of the target
GAD pair is PSUE(Local) for the P-VOL and COPY(Block) for the S-VOL.
Command example:
pairdisplay -g oraH02 -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 PSUE NEVER , 55 2222 - - 2 1 - - - L/L - D N D oraHA02 dev02(R) (CL1-C-0, 0, 0)844444 2222.S-VOL COPY NEVER ,----- 1111 - - 2 1 - - - B/B - D N D
-
Forcibly delete the S-VOL of the target
GAD pair by deleting the virtual LDEV ID.
Command example:
pairsplit –g oraHA02 –RF –IH3
-
Forcibly delete the P-VOL of the target
GAD pair by leaving the virtual LDEV ID.
Command example:
pairsplit –g oraHA02 –SFV –IH2
-
Verify that the target
GAD pair has been deleted.
Command example:
pairdisplay –g oraHA02 –fcxe –H2 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 virtual LDEV ID remains for the S-VOL of the temporary
GAD pair.
Command example:
raidcom get ldev –ldev_id 0x1111 –IH2 (Omitted) LDEV : 1111 (Omitted)
-
Verify that the
GAD reserve attribute is assigned to the virtual LDEV ID of the S-VOL of the target
GAD pair.
Command example:
raidcom get ldev –ldev_id 0x2222 –IH3 (Omitted) LDEV : 2222 VIR_LDEV : ffff (Omitted)
- Verify that the host path from the host to the P-VOL of the source GAD pair (the P-VOL of the temporary GAD pair) is online.
-
Verify that the pair status (I/O mode) for the P-VOL of the temporary
GAD pair is PSUE(Local).
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 PSUE NEVER , 100 1111 - - 1 1 - - - B/B - D N D
If the pair status (I/O mode) is PAIR(Mirror(RL)), issue an update I/O to the P-VOL of the temporary GAD pair. -
Resynchronize the temporary
GAD pair by specifying the P-VOL.
Command example:
pairresync –g oraHA01 –IH0
-
Verify that the pair status of the temporary
GAD pair has changed to COPY.
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 COPY NEVER , 55 1111 - - 1 1 - - - L/M - 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
The pair status becomes PAIR after the copy operation is complete, however this does not cause any problems. - Continue data migration from the procedure described in Creating a target GAD pair.