Need Help - Urgent

[S.S.]

Hi experts,

I have tried to extend the volume group.
For this, i have destroyed the unused 100gb volume group and have tried to extend that volume group to the required volume group 150gb current size.

After removing the vg test3working, i have extended those physical device files to the test4db4.
Here is the output i got:

# vgdisplay -v test4db4
--- Volume groups ---
VG Name /dev/test4db4
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 65535
VGDA 4
PE Size (Mbytes) 32
Total PE 7998
Alloc PE 4799
Free PE 3199
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

--- Logical volumes ---
LV Name /dev/test4db4/test4db4
LV Status available/syncd
LV Size (Mbytes) 153568
Current LE 4799
Allocated PE 4799
Used PV 1


--- Physical volumes ---
PV Name /dev/dsk/c4t2d2
PV Name /dev/dsk/c8t2d2 Alternate Link
PV Name /dev/dsk/c14t2d2 Alternate Link
PV Name /dev/dsk/c18t2d2 Alternate Link
PV Name /dev/dsk/c22t2d2 Alternate Link
PV Name /dev/dsk/c26t2d2 Alternate Link
PV Name /dev/dsk/c32t2d2 Alternate Link
PV Name /dev/dsk/c36t2d2 Alternate Link
PV Status available
Total PE 4799
Free PE 0
Autoswitch On
Proactive Polling On

PV Name /dev/dsk/c4t1d5
PV Name /dev/dsk/c6t1d5 Alternate Link
PV Name /dev/dsk/c14t1d5 Alternate Link
PV Name /dev/dsk/c18t1d5 Alternate Link
PV Name /dev/dsk/c24t1d5 Alternate Link
PV Name /dev/dsk/c28t1d5 Alternate Link
PV Name /dev/dsk/c32t1d5 Alternate Link
PV Status available
Total PE 3199
Free PE 3199
Autoswitch On
Proactive Polling On

The device files:

PV Name /dev/dsk/c4t1d5 Alternate Link
PV Name /dev/dsk/c6t1d5 Alternate Link
PV Name /dev/dsk/c14t1d5 Alternate Link
PV Name /dev/dsk/c18t1d5 Alternate Link
PV Name /dev/dsk/c24t1d5 Alternate Link
PV Name /dev/dsk/c28t1d5 Alternate Link
PV Name /dev/dsk/c32t1d5 Alternate Link

are the destroyed volume group files which i have extended the required volume group test4db4.
After i tried to increase the size in sam but i have encountered the error.

vgcfgbackup: Invalid LVMREC on Physical Volume /dev/rdsk/c4t1d5

Due to that i have rechecked the vg device files, the device which i have extended are with the not available status.

After that i have performed the vgscan of /etc/lvmtab and now the vgdisplay is showing the following:


# vgdisplay -v /dev/test4db4
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c6t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c10t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c12t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c16t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c24t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c28t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c30t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c34t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Volume groups ---
VG Name /dev/test4db4
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 2
Act PV 1
Max PE per PV 65535
VGDA 2
PE Size (Mbytes) 32
Total PE 4799
Alloc PE 4799
Free PE 0
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c6t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c10t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c12t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c16t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c24t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c28t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c30t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c34t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/test4db4/test4db4
LV Status available/syncd
LV Size (Mbytes) 255936
Current LE 7998
Allocated PE 7998
Used PV 1


--- Physical volumes ---
PV Name /dev/dsk/c4t2d2
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c6t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c10t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c12t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c16t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c24t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c28t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c30t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c34t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Name /dev/dsk/c8t2d2 Alternate Link
PV Name /dev/dsk/c14t2d2 Alternate Link
PV Name /dev/dsk/c18t2d2 Alternate Link
PV Name /dev/dsk/c22t2d2 Alternate Link
PV Name /dev/dsk/c26t2d2 Alternate Link
PV Name /dev/dsk/c32t2d2 Alternate Link
PV Name /dev/dsk/c36t2d2 Alternate Link
PV Status available
Total PE 4799
Free PE 0
Autoswitch On
Proactive Polling On


Kindly help me, now i am afraid what to do.

Waiting for your quick reply.

[Kapil Jha]

did you reduce the volume properly
what i have understood from your post if
you removed one vg and extends the device to other VG.
What exact steps you followed?

BR,
Kapil+

[S.S.]

Hi experts,

Now, i switched back to original /etc/lvmtab file.
and the vgdisplay of test4db4 is looking fine and after that i have extended the vg with the device files and also i have created the alternate links also.

The output of vgdisplay test4db4 is:

# vgextend test4db4 /dev/dsk/c18t1d5 /dev/dsk/c14t1d5 /dev/dsk/c6t1d5# # vgdisplay -v test4db4 #
--- Volume groups ---
VG Name /dev/test4db4
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 4
Act PV 4
Max PE per PV 65535
VGDA 8
PE Size (Mbytes) 32
Total PE 14396
Alloc PE 14396
Free PE 0
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

--- Logical volumes ---
LV Name /dev/test4db4/test4db4
LV Status available/syncd
LV Size (Mbytes) 460672
Current LE 14396
Allocated PE 14396
Used PV 4


--- Physical volumes ---
PV Name /dev/dsk/c4t2d2
PV Name /dev/dsk/c8t2d2 Alternate Link
PV Name /dev/dsk/c14t2d2 Alternate Link
PV Name /dev/dsk/c18t2d2 Alternate Link
PV Name /dev/dsk/c22t2d2 Alternate Link
PV Name /dev/dsk/c26t2d2 Alternate Link
PV Name /dev/dsk/c32t2d2 Alternate Link
PV Name /dev/dsk/c36t2d2 Alternate Link
PV Status available
Total PE 4799
Free PE 0
Autoswitch On
Proactive Polling On

PV Name /dev/dsk/c32t1d5
PV Status unavailable
Total PE 3199
Free PE 0
Autoswitch On
Proactive Polling On

PV Name /dev/dsk/c36t1d5
PV Status unavailable
Total PE 3199
Free PE 0
Autoswitch On
Proactive Polling On

PV Name /dev/dsk/c4t1d5
PV Name /dev/dsk/c28t1d5 Alternate Link
PV Name /dev/dsk/c24t1d5 Alternate Link
PV Name /dev/dsk/c18t1d5 Alternate Link
PV Name /dev/dsk/c14t1d5 Alternate Link
PV Name /dev/dsk/c6t1d5 Alternate Link
PV Status available
Total PE 3199
Free PE 0
Autoswitch On
Proactive Polling On


Two device files are showing as Unavailable PV status.
When i tried to reduce those device files the following error is encountered:

# vgreduce test4db4 /dev/dsk/c32t1d5
vgreduce: Physical volume "/dev/dsk/c32t1d5" could not be removed since some of its
physical extents are still in use.

Kindly help me how can we turn the status of pv to available.
The diskinfo output is showing correct info for above two device files and also those device files are in CLAIMED status of ioscan output.

[Kapil Jha]

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=942766

This might help you point the missing step see the last post.

BR,
Kapil+

[Kapil Jha]

as per my last post did you removed the LV earlier, destoyed old VG properly.

check all the lvdisplay -v lv
to see if this disk has any LVs spanned on it,
If yes move them with
pvmove -n lv_name disk_from disk_to

and reduce the VG.

BR,
Kapil+

[S.S.]

Hi Kapil,

I have performed the following steps for this entire task.

# umount /dir_name



# vgchange -a n /dev/test3working



# vgexport /dev/test3working



# ll mapfile
# rm mapfile



# rm /dir_name
# cd /etc/lvmconf
# rm test3work*


Edited /etc/fstab file to remove the destroyed FS.




# strings /etc/lvmtab <==vg01 and it's associated disks has been removed from lvmtab file
# ll -d /dev/test3working <==System should prompt dir not found
# ll /dev/test3working/group <==System should prompt file not found


#vgextend test4db4

[S.S.]

Hi Kapil,

Except the unavailable pv links, still there should not be any data loss & can access this vg without any problem right because the alternative links are available.

Am i right?

[Kapil Jha]

did you do pvcreate before adding to other VG.
I do not see in your steps.
BR,
Kapil+

[S.S.]

Hi Kapil,

I did the pvcreate command before extending the vg.

Used pvcreate -f

[Kapil Jha]

ok so m so confused :)
if you want to reduce a disk from a VG it should not have any LV spanned on it
ie if you do
lvdisplay -v /dev/vg_name/lv*|grep disk_device

you should not get anything

reduce LV and remove VG and do pvcreate and use the disk anywhere else.

What you doing is exporting the VG and doing pvcrete and adding the PV to new VG.
So I suppose there should be noting wrong in what u doing.

Can you please let me know if my understaing is right and if yes in which steps out of above you facing issue.

BR,
Kapil+