Flash Storage​

Hello,

I can't delete the LUN path because it is the last path of remote copy.

The status of the GAD Pair looks like :

raidscan -p CL5-B-2  -fx -l 2 -CLI -I50PORT# /ALPA/C TID#  LU# Seq#   Num  LDEV# P/S  Status Fence  P-Seq# P-LDEV#CL5-B-2  dc  0   0    2 480050     1   410 P-VOL PSUS  NEVER   480089    410

The P-Vol is in PSUS and the the related S-Vol is 0x410 on #89.
But the 0x410 on #89 does not any more exist.

# raidcom get ldev -ldev_id 0x410  -fx  -I89Serial#  : 480089LDEV : 410 VIR_LDEV : ffffSL : -CL : -VOL_TYPE : NOT DEFINED       SSID : 0008RSGID : 1

The 0x410 was the old S-Vol that the reason why we see here VIR_LDEV : ffff.

I've tried different pairsplit options, to do a forced GAD pair delete - but always it does not work.

Any idea ? How to recover from this state ?

regards
Sven

Hello,

I can't delete the LUN path because it is the last path of remote copy.

The status of the GAD Pair looks like :

raidscan -p CL5-B-2  -fx -l 2 -CLI -I50PORT# /ALPA/C TID#  LU# Seq#   Num  LDEV# P/S  Status Fence  P-Seq# P-LDEV#CL5-B-2  dc  0   0    2 480050     1   410 P-VOL PSUS  NEVER   480089    410

The P-Vol is in PSUS and the the related S-Vol is 0x410 on #89.
But the 0x410 on #89 does not any more exist.

# raidcom get ldev -ldev_id 0x410  -fx  -I89Serial#  : 480089LDEV : 410 VIR_LDEV : ffffSL : -CL : -VOL_TYPE : NOT DEFINED       SSID : 0008RSGID : 1

The 0x410 was the old S-Vol that the reason why we see here VIR_LDEV : ffff.

I've tried different pairsplit options, to do a forced GAD pair delete - but always it does not work.

Any idea ? How to recover from this state ?

regards
Sven

Hallo Sven,  please post  raidcom get ldev -ldev id... for both p and s vols.
But.. the pairsplit command will do it.

To Split the pair removing the virtual_ldev_id from the SVOL.
pairsplit -g gad00 -RF -l -IH1.
<o:p></o:p>pairdisplay -g gad00 -fcex -IH0  svol is now smplx  and gad reserved.

Now Split the pair leaving  the virtual_ldev_id on the PVOL
<o:p></o:p>PVol is smplx  but has virtual ldev id and is still visible to hosts.
<o:p></o:p>pairsplit -g gad00 -SFV -l -IH0
<o:p></o:p>
Now you can delete the paths to the SVOL and delete the SVOL
<o:p></o:p>svol ldev_id  no longer reserved

-RF  make the Svol simplex , reserved  and no host access  no longer a GAD  in the vol_type
-RFV  make the Svol simplex , still a GAD  in the vol_type, still has virt_ldev id and is accessible to hosts IO.
-SF  make the Pvol simplex , reserved  and no host access  no longer a GAD  in the vol_type
-SFV  make the Pvol simplex , still a GAD  in the vol_type, still has virt_ldev id and is accessible to hosts IO.

Hello,

I can't delete the LUN path because it is the last path of remote copy.

The status of the GAD Pair looks like :

raidscan -p CL5-B-2  -fx -l 2 -CLI -I50PORT# /ALPA/C TID#  LU# Seq#   Num  LDEV# P/S  Status Fence  P-Seq# P-LDEV#CL5-B-2  dc  0   0    2 480050     1   410 P-VOL PSUS  NEVER   480089    410

The P-Vol is in PSUS and the the related S-Vol is 0x410 on #89.
But the 0x410 on #89 does not any more exist.

# raidcom get ldev -ldev_id 0x410  -fx  -I89Serial#  : 480089LDEV : 410 VIR_LDEV : ffffSL : -CL : -VOL_TYPE : NOT DEFINED       SSID : 0008RSGID : 1

The 0x410 was the old S-Vol that the reason why we see here VIR_LDEV : ffff.

I've tried different pairsplit options, to do a forced GAD pair delete - but always it does not work.

Any idea ? How to recover from this state ?

regards
Sven

Hi again, remember to use the -l  (local) .. then you can address only the Svol or Pvol .. both storages do not have to be accessible to horcm.

Hallo Sven,  please post  raidcom get ldev -ldev id... for both p and s vols.
But.. the pairsplit command will do it.

To Split the pair removing the virtual_ldev_id from the SVOL.
pairsplit -g gad00 -RF -l -IH1.
<o:p></o:p>pairdisplay -g gad00 -fcex -IH0  svol is now smplx  and gad reserved.

Now Split the pair leaving  the virtual_ldev_id on the PVOL
<o:p></o:p>PVol is smplx  but has virtual ldev id and is still visible to hosts.
<o:p></o:p>pairsplit -g gad00 -SFV -l -IH0
<o:p></o:p>
Now you can delete the paths to the SVOL and delete the SVOL
<o:p></o:p>svol ldev_id  no longer reserved

-RF  make the Svol simplex , reserved  and no host access  no longer a GAD  in the vol_type
-RFV  make the Svol simplex , still a GAD  in the vol_type, still has virt_ldev id and is accessible to hosts IO.
-SF  make the Pvol simplex , reserved  and no host access  no longer a GAD  in the vol_type
-SFV  make the Pvol simplex , still a GAD  in the vol_type, still has virt_ldev id and is accessible to hosts IO.

Hello,

I can't delete the LUN path because it is the last path of remote copy.

The status of the GAD Pair looks like :

raidscan -p CL5-B-2  -fx -l 2 -CLI -I50PORT# /ALPA/C TID#  LU# Seq#   Num  LDEV# P/S  Status Fence  P-Seq# P-LDEV#CL5-B-2  dc  0   0    2 480050     1   410 P-VOL PSUS  NEVER   480089    410

The P-Vol is in PSUS and the the related S-Vol is 0x410 on #89.
But the 0x410 on #89 does not any more exist.

# raidcom get ldev -ldev_id 0x410  -fx  -I89Serial#  : 480089LDEV : 410 VIR_LDEV : ffffSL : -CL : -VOL_TYPE : NOT DEFINED       SSID : 0008RSGID : 1

The 0x410 was the old S-Vol that the reason why we see here VIR_LDEV : ffff.

I've tried different pairsplit options, to do a forced GAD pair delete - but always it does not work.

Any idea ? How to recover from this state ?

regards
Sven