topic Re: Quorum not present in Operating System - HP-UX

Quorum not present

jpcast_real — Fri, 14 Oct 2005 12:39:47 GMT

Hello,

I have a volume group which has LUNs in two virtual Arrays .All our information is mirrored between both virtual arrays . Today after a power failure we have lost just one link to one virtual arrray , the rest of them remains there . Each virtual array has two links to the san . Now the vg from the cluster doest not activate :

Athos:/etc/cmcluster/pkgdb> vgchange -a n -/dev/vgora
Athos:/etc/cmcluster/pkgdb> vgdisplay -v /dev/vgora
vgdisplay: Volume group not activated.
vgdisplay: Cannot display volume group "/dev/vgora".
Athos:/etc/cmcluster/pkgdb> vgchange -a y /dev/vgora
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c20t15d0":
The path of the physical volume refers to a device that does not
exist, or is not configured into the kernel.
vgchange: Activation mode requested for the volume group "/dev/vgora" conflicts with configured mode.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c20t15d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.
Athos:/etc/cmcluster/pkgdb> vgchange -a y -q n /dev/vgora
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c20t15d0":
The path of the physical volume refers to a device that does not
exist, or is not configured into the kernel.
vgchange: Activation mode requested for the volume group "/dev/vgora" conflicts with configured mode.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c20t15d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.
Athos:/etc/cmcluster/pkgdb> vgchange -c n -q n /dev/vgora
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c20t15d0":
The path of the physical volume refers to a device that does not
exist, or is not configured into the kernel.
vgchange: Could not attach to volume group "/dev/vgora" all of
its physical volumes.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c20t15d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.

I really will appreciate your suggestions.

Regards

Re: Quorum not present

Torsten. — Fri, 14 Oct 2005 13:01:48 GMT

Normally, the VG is activated when the package starts.
vgchange -a y vg
doesn't work in cluster configuration.
use vgchange -e y vg

One disk is not accessible.
try ioscan -fn and have a look at /dev/dsk/c20t15d0 if the status is NO_HW

Re: Quorum not present

jpcast_real — Fri, 14 Oct 2005 13:08:16 GMT

Hello,

in fact we have lost some links to the disks because there has been a power failure to one of the for Switches of the SAN . This has made that a lot of physical links has been lost . I have been able rigth now to activate my vg creating a new /etc/lvmtab .

However my question remains the same , in the cluster I have set the -q n option to forget the quorum but when happens a situation as the one we have today we can see that it is completely useless.....

Can anyone give me an explanation ???

I will not hesitate to give points to any good answer....

Re: Quorum not present

Torsten. — Fri, 14 Oct 2005 13:35:49 GMT

It is NOT useless ... you did the wrong commands.

vgchange -e y -q n vg

is the right one. Don't touch the /etc/lvmtab, don't do anything like vgchange -c n or vgchange -a y , because you'll corrupt your vg and cluster configuration!

Re: Quorum not present

jpcast_real — Fri, 14 Oct 2005 13:39:25 GMT

9 points for the last entry . This was the correct format:

Athos:/root> vgchange -a e -q n /dev/vgpkgdb

But anyway thank you very much