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06-05-2013 09:31 AM
06-05-2013 09:31 AM
vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Hi,
The other day we had a problem where 4 paths of the 8 to our EMC SAN disk went away. After working with EMC, we made some changes on the frame side and then rebooted. The disks came back but now when I am trying to add some space to a voulume group, I get the following error.
vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Verification of unique LVM disk id on each disk in the volume group
/dev/dsk/c26t0d0 is one of the paths that went away and not one of the disks I am adding with the vgextend command. When I do a pvdisplay, I get the following:
#pvdisplay /dev/dsk/c26t0d0
Device file path "/dev/dsk/c26t0d0" is an alternate path
to the Physical Volume. Using Primary Link "/dev/dsk/c24t0d0".
--- Physical volumes ---
PV Name /dev/dsk/c24t0d0
PV Name /dev/dsk/c25t0d0 Alternate Link
PV Name /dev/dsk/c26t0d0 Alternate Link
PV Name /dev/dsk/c27t0d0 Alternate Link
PV Name /dev/dsk/c28t0d0 Alternate Link
PV Name /dev/dsk/c29t0d0 Alternate Link
PV Name /dev/dsk/c30t0d0 Alternate Link
PV Name /dev/dsk/c31t0d0 Alternate Link
VG Name /dev/vg01
PV Status available
Allocatable yes
VGDA 2
Cur LV 10
PE Size (Mbytes) 32
Total PE 54392
Free PE 0
Allocated PE 54392
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On
strings /etc/lvmtab shows the disk being part of the volume group.
Any ideas?
Thanks,
Ray
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06-05-2013 09:44 AM
06-05-2013 09:44 AM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Can you run a vgdisplay -v vg01 ?
-Bob
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06-05-2013 11:35 AM
06-05-2013 11:35 AM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
#vgdisplay -v vg01
--- Volume groups ---
VG Name /dev/vg01
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 10
Open LV 10
Max PV 50
Cur PV 1
Act PV 1
Max PE per PV 65535
VGDA 2
PE Size (Mbytes) 32
Total PE 54392
Alloc PE 54392
Free PE 0
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
--- Logical volumes ---
LV Name /dev/vg01/lvepic
LV Status available/syncd
LV Size (Mbytes) 14336
Current LE 448
Allocated PE 448
Used PV 1
LV Name /dev/vg01/lvshd08
LV Status available/syncd
LV Size (Mbytes) 278528
Current LE 8704
Allocated PE 8704
Used PV 1
LV Name /dev/vg01/lvshd07
LV Status available/syncd
LV Size (Mbytes) 37632
Current LE 1176
Allocated PE 1176
Used PV 1
LV Name /dev/vg01/lvshd06
LV Status available/syncd
LV Size (Mbytes) 27008
Current LE 844
Allocated PE 844
Used PV 1
LV Name /dev/vg01/lvshd05
LV Status available/syncd
LV Size (Mbytes) 344160
Current LE 10755
Allocated PE 10755
Used PV 1
LV Name /dev/vg01/lvshd04
LV Status available/syncd
LV Size (Mbytes) 238592
Current LE 7456
Allocated PE 7456
Used PV 1
LV Name /dev/vg01/lvshd03
LV Status available/syncd
LV Size (Mbytes) 218112
Current LE 6816
Allocated PE 6816
Used PV 1
LV Name /dev/vg01/lvshd02
LV Status available/syncd
LV Size (Mbytes) 309248
Current LE 9664
Allocated PE 9664
Used PV 1
LV Name /dev/vg01/lvshd01
LV Status available/syncd
LV Size (Mbytes) 252928
Current LE 7904
Allocated PE 7904
Used PV 1
LV Name /dev/vg01/lvshd
LV Status available/syncd
LV Size (Mbytes) 20000
Current LE 625
Allocated PE 625
Used PV 1
--- Physical volumes ---
PV Name /dev/dsk/c24t0d0
PV Name /dev/dsk/c25t0d0 Alternate Link
PV Name /dev/dsk/c26t0d0 Alternate Link
PV Name /dev/dsk/c27t0d0 Alternate Link
PV Name /dev/dsk/c28t0d0 Alternate Link
PV Name /dev/dsk/c29t0d0 Alternate Link
PV Name /dev/dsk/c30t0d0 Alternate Link
PV Name /dev/dsk/c31t0d0 Alternate Link
PV Status available
Total PE 54392
Free PE 0
Autoswitch On
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06-05-2013 12:01 PM
06-05-2013 12:01 PM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Thanks...can you also post the command you are trying to run?
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06-05-2013 12:06 PM
06-05-2013 12:06 PM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
#vgextend /dev/vg01 /dev/dsk/c31t0d2 /dev/dsk/c25t0d2 /dev/dsk/c24t0d2 /dev/d>
vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Verification of unique LVM disk id on each disk in the volume group
/dev/vg01 failed.
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06-05-2013 12:11 PM
06-05-2013 12:11 PM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Well, since /dev/dsk/c26t0d0 is an alternate link, I would just try to first remove it from the configuration...
# vgreduce /dev/vg01 /dev/dsk/c26t0d0
..and then re-add it again:
# vgextend /dev/vg01 /dev/dsk/c26t0d0
See if that helps.
-Bob
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06-05-2013 12:17 PM
06-05-2013 12:17 PM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
It is acting like c26t0d0 is different from the others.
A couple of things I'd like to see:
# diskinfo /dev/rdsk/c24t0d0
# diskinfo /dev/rdsk/c26t0d0
to compare the values.
To do a crude check to see what LVM info is on the disk you can do:
# dd if=/dev/rdsk/c24t0d0 of=/tmp/c24t0d0 bs=1024k count=2
# dd if=/dev/rdsk/c26t0d0 of=/tmp/c26t0d0 bs=1024k count=2
Then do a 'strings' on the files.
You will get output similar to this (this is from an 11.31 system):
# strings /tmp/disk12
LVMREC01f
DEFECT01
LVMREC01f
DEFECT01
*V UVGDA0001
VGSA0001Q
(`n@VGDA0001
VGSA0001Q
);y?VGDA0001
VGSA0001O
OI!q
type 10000 "mkfs"
time 1369163350 588847 (Tue May 21 15:09:10 2013 EDT)
version 7 logsize 16384 fssize 1048576000 fsndevs 1
lost+found
IamMOUNTED
Compare the output from your 2 files. They should be exactly the same since it is from the same physical disk. If there is a difference, then you have problems.
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06-05-2013 12:25 PM
06-05-2013 12:25 PM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Attached is a script that a colleague of mine wrote. It queries disks and displays various LVM information.
Transfer the script to your HP-UX server, make sure it is executable and run it.
For example:
# showLVMinfo /dev/rdsk/c1t0d0 /dev/rdsk/c2t0d0 Local CPU ID (hex=0x69ea86f7) 1776977655 /dev/rdsk/c1t0d0: CPUID=0x69ea86f7 (1776977655), VGID 0x4ae99fd8, PVID 0x4f5d50eb /dev/rdsk/c2t0d0: CPUID=0x69ea86f7 (1776977655), VGID 0x4ae99fd8, PVID 0x4d501e32
In your case, I would run it like:
# ./showLVMinfo /dev/rdsk/c24t0d0 /dev/rdsk/c26t0d0
The PVID should be exactly the same.
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06-06-2013 10:55 AM
06-06-2013 10:55 AM
Re: vgextend: Physical Volume "/dev/dsk/c26t0d0" contains no LVM information
Patrick - thanks for that, I suppose it is better to check that the disks are who they say they are first. Thanks for the sharing the script as well.
-Bob
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