fail to activate volume group in exclusive mode

[anat heilper]

Hi,
I'm running on hpux 11.23.
I've configured volume group through the following steps:
1. created the volume group on 1 of the nodes using SAM
2. vgexport -m /etc/cmcluster/vgsg02.map -s -p vgsg02
3. copied the mapfile to the second node.
on the other node:
4. mkdir /dev/vgsg02
5. mknod /dev/vgsg02/group c 64 0x010000 ( I've checked that this minor number is available)
6. vgimport -m /etc/cmcluster/vgsg02.map -s vgsg02

now, if I try to activate vgchange -a y it succeds.
But, if i try to activate vgchange -a e I recieve the following errors:



# vgchange -a e vgsg02
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c84t0d1":
Too many links
vgchange: Too many links
vgchange: Too many links
vgchange: Too many links
vgchange: Too many links
vgchange: Too many links
vgchange: Too many links
vgchange: Too many links
vgchange: Activation mode requested for the volume group "/dev/vgsg02" conflicts with configured mode.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c84t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c86t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c92t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c94t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c124t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c126t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c132t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c134t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.


Can someone please explain to me what to do?
Thanks,
Anat.

[Sandman!]

LVM only supports 1 primary and 7 alternate paths to a PV for a maximum of 8 total paths. Is it possible that you are running into this situation?

~hope it helps

[David Bellamy]

I think the problem is that you have to many links, try removing one of the alternate links then try again

[A. Clay Stephenson]

Well, despite the errors you are seeing if vgchange -a y is ok and vgchange -a e is not then I would check: 1) Have you asserted the vgchange -c y command to make the VG cluster aware? 2) Is the cluster daemon (cmcld) running on this node? I also assume that you have run vgchange -a n on the other node.

[Steven E. Protter]

Shalom,

Some Non-HP disk arrays do indeed have a limit of 8 LUN's per HBA card.

I would rmsf the device files, re-run ioscan and try insf -C disk

You may need to reboot the system after removing the disk device files.

SEP

[anat heilper]

Hi All,
Hi do I know if I have non-hpux disk array?

[Sandman!]

Could you please attach the output of the following command:

# vgdisplay -v vgsg02

assuming it's activated with "vgchange -a y"

[anat heilper]

Hi,
when I perform vgchange -a y and then vgdisplay -v vgsg02 I receive a lot of warnings of the following type:
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c92t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c94t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c124t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c126t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c132t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c134t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c84t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c86t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c92t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c94t0d1":
The specified path does not correspond to physical volume attached to this volume group.

I looked at sam on the disk devices and I saw that there are 16 paths, which might explain the problems that i have with the physical links. Question is, can someone guide my how to (carefully) remove the unnecessary links?

[anat heilper]

regarding the previous message, after all of the warnings, it displays the logical volumes that belong to the volume group:
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol5
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol6
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol7
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol8
LV Status available/syncd
...skipping...
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol9
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol10
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol11
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol12
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol13
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol14
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol15
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 512
Used PV 1

LV Name /dev/vgsg02/vol16
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512

[anat heilper]

Hi All,
something were strange happened with those disks:
I tried to look through SAM configuration, and I think that i ran "Diagnose missing disk" for vgsg01. after that when I looked at the disk devices folder at the sam in the "use" column it's written "DLVM" instead of "LVM", and vgchange -c y / vgchange -a e succeeds!!

can someone explain me please what is DLVM?
Thanks,
Anat.