rp5430 vgreduce error/ failed mirror boot disk replacement

[bmelzow]

I am having a problem replacing a failed disk on an rp5430 HP-UX 11.11 system.  I have gone through the "When good disks go bad" documentation and other guides on finding the failed disk and removing it from the volume group.  I thought that the disk was completely gone and put in a replacement disk but it looks like there may be some remnants of the old disk somewhere.  I was able to lvreduce all of the mirrors to the failed disk.  The failed disk was at location /dev/dsk/c1t2d0 and the replacement disk showed up in the same location after reboot.

A couple issues I see are as follows:

Ghost Logical Volume:
Vgreduce –f vg00 results in
Not all extents are free. i.e. Out of 4340 PEs, only 3340 are free.
You must free all PEs using lvreduce/lvremove before the PV can be removed.
Example: lvreduce -A n -m 0 /dev/vg01/lvol1.
         lvremove -A n /dev/vg01/lvol1
Here's the map of used PEs

         --- Logical extents ---
         LE      LV              PE     Status 1
         0000    lvol9           1591     ???
         0001    lvol9           1592     ???
         0002    lvol9           1593     ???
         0003    lvol9           1594     ???
         0004    lvol9           1595     ???
...

I can find no such reference to lvol9 anywhere in the system.


Vgdisplay –v 00 (shows 2 active PV but it looks like there is only one attached to the volume group.  Is this because I have not been able to sucessfully reduce the VG?)
root@rupert # vgdisplay -v vg00
--- Volume groups ---
VG Name                     /dev/vg00
VG Write Access             read/write
VG Status                   available
Max LV                      255
Cur LV                      10
Open LV                     10
Max PV                      16
Cur PV                      2
Act PV                      1
Max PE per PV               4350
VGDA                        2
PE Size (Mbytes)            8
Total PE                    4340
Alloc PE                    3655
Free PE                     685
Total PVG                   1
Total Spare PVs             0
Total Spare PVs in use      0

   --- Logical volumes ---
   LV Name                     /dev/vg00/lvol1
   LV Status                   available/syncd
   LV Size (Mbytes)            304
   Current LE                  38
   Allocated PE                38
   Used PV                     1

   LV Name                     /dev/vg00/lvol2
   LV Status                   available/syncd
   LV Size (Mbytes)            4096
   Current LE                  512
   Allocated PE                512
   Used PV                     1

   LV Name                     /dev/vg00/lvol3
   LV Status                   available/syncd
   LV Size (Mbytes)            400
   Current LE                  50
   Allocated PE                50
   Used PV                     1

   LV Name                     /dev/vg00/lvol4
   LV Status                   available/syncd
   LV Size (Mbytes)            200
   Current LE                  25
   Allocated PE                25
   Used PV                     1

   LV Name                     /dev/vg00/lvol5
   LV Status                   available/syncd
   LV Size (Mbytes)            2000
   Current LE                  250
   Allocated PE                250
   Used PV                     1

   LV Name                     /dev/vg00/lvol6
   LV Status                   available/syncd
   LV Size (Mbytes)            8000
   Current LE                  1000
   Allocated PE                1000
   Used PV                     1

   LV Name                     /dev/vg00/lvol7
   LV Status                   available/syncd
   LV Size (Mbytes)            1640
   Current LE                  205
   Allocated PE                205
   Used PV                     1

   LV Name                     /dev/vg00/lvol8
   LV Status                   available/syncd
   LV Size (Mbytes)            4600
   Current LE                  575
   Allocated PE                575
   Used PV                     1

   LV Name                     /dev/vg00/lvdmp
   LV Status                   available/syncd
   LV Size (Mbytes)            8000
   Current LE                  1000
   Allocated PE                1000
   Used PV                     0

   LV Name                     /dev/vg00/lvnodmp
   LV Status                   available/syncd
   LV Size (Mbytes)            8000
   Current LE                  1000
   Allocated PE                1000
   Used PV                     1


   --- Physical volumes ---
   PV Name                     /dev/dsk/c2t2d0
   PV Status                   available
   Total PE                    4340
   Free PE                     685
   Autoswitch                  On


   --- Physical volume groups ---
   PVG Name                    pvg0
   PV Name                     /dev/dsk/c2t2d0

[bmelzow]

In reference to my previous post about ghost logical volume (lvol9), it looks like the LE and PEs correspond to the logical volume lvnodmp.

Here is an example:

root@rupert # vgreduce -f vg00
Not all extents are free. i.e. Out of 4340 PEs, only 3340 are free.
You must free all PEs using lvreduce/lvremove before the PV can be removed.
Example: lvreduce -A n -m 0 /dev/vg01/lvol1.
lvremove -A n /dev/vg01/lvol1
Here's the map of used PEs

--- Logical extents ---
LE LV PE Status 1
0000 lvol9 1591 ???
0001 lvol9 1592 ???
0002 lvol9 1593 ???
0003 lvol9 1594 ???
0004 lvol9 1595 ???
0005 lvol9 1596 ???
0006 lvol9 1597 ???
0007 lvol9 1598 ???
0008 lvol9 1599 ???
0009 lvol9 1600 ???

...

root@rupert # lvdisplay -v -k /dev/vg00/lvnodmp
--- Logical volumes ---
LV Name /dev/vg00/lvnodmp
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 8000
Current LE 1000
Allocated PE 1000
Stripes 0
Stripe Size (Kbytes) 0
Bad block off
Allocation strict/contiguous
IO Timeout (Seconds) default

--- Distribution of logical volume ---
PV Name LE on PV PE on PV
/dev/dsk/c2t2d0 1000 1000

--- Logical extents ---
LE PV1 PE1 Status 1
00000 1 01591 current
00001 1 01592 current
00002 1 01593 current
00003 1 01594 current
00004 1 01595 current
00005 1 01596 current
00006 1 01597 current
00007 1 01598 current
00008 1 01599 current
00009 1 01600 current

...

It also looks like I have two dump locations but only lvnodmp is active.  

root@rupert # vgdisplay -v vg00

...

LV Name /dev/vg00/lvdmp
LV Status available/syncd
LV Size (Mbytes) 8000
Current LE 1000
Allocated PE 1000
Used PV 0

LV Name /dev/vg00/lvnodmp
LV Status available/syncd
LV Size (Mbytes) 8000
Current LE 1000
Allocated PE 1000
Used PV 1

root@rupert # lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c2t2d0 (0/0/2/0.2.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c2t2d0
Root: lvol3 on: /dev/dsk/c2t2d0
Swap: lvol2 on: /dev/dsk/c2t2d0
Dump: lvdmp on: /dev/dsk/c2t2d0, 0
Dump: lvnodmp on: /dev/dsk/c2t2d0, 1

How hard is it to move the dump location to lvdmp and remove the lvnodmp logical volume?

[Ajin_1]

Follow the below steps:--

 vgreduce -f vg00

 lvreduce -A n -m 1 /dev/vg01/lvol1

lvremove -A n /dev/vg01/lvol1

[bmelzow]

Thanks for he reply, but unfortunately i have already tried all of these commands previously and they do not correct the issue.

 vgreduce -f vg00      < Does not work and errors out.  See my previous two posts

 lvreduce -A n -m 1 /dev/vg01/lvol1      < Does not work because the volume lvol9 does not exist anywhere

lvremove -A n /dev/vg01/lvol1     < Does not work because the volume lvol9 does not exist anywhere

I am still in need of assistance if anyone can help.

Thanks

[Ajin_1]

The failed disk was at location /dev/dsk/c1t2d0 and the replacement disk showed up in the same location after reboot.------------------------------------->>>>>>>>>Remove the disk  Physically from srver .run vgscan -v  to recreate the lvm tab .Then connect the  disk and pvcreate.

[bmelzow]

I shutdown the server, removed the disk, powered server back on and tried vgscan but it gives the error "

vgscan: has no correspoding valid raw device file under /dev/rdsk.
Verification of unique LVM disk id on each disk in the volume group
/dev/vg00 failed."

Does anyone have any more ideas?