topic Re: I can not remove a volume group in Operating System - HP-UX

I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 07:58:49 GMT

Hello,

I am a HPUX 11.11 administrator.

I have a volume group I can not remove, neither using vgremove or vgexport, because is activated and has still missing logical volumen associated. The logical volumens were deleted by force, removed from directly from /etc/fstab , so the file system associated.

In this way, if I try to execute a vgexport , I get the error :

vgexport: Volume group "/dev/caprep" is still active.

vgexport. Couldn´t export volume group "/dev/caprep"

And if I try to deactivate it, fails too:

vgchange : Couldn´t deactivate volume group "caprep"

Any idea, how can I force the deletion?

Thank you in advance

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 09:25:34 GMT

Hi:

# fuser -u /dev/caprep

# vgdsiplay -v /dev/caprep

rgs

Re: I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 09:34:22 GMT

--- Volume groups ---
VG Name                     /dev/caprep
VG Write Access             read/write
VG Status                   available
Max LV                      255
Cur LV                      5
Open LV                     0
Max PV                      16
Cur PV                      1
Act PV                      1
Max PE per PV               35004
VGDA                        2
PE Size (Mbytes)            8
Total PE                    17499
Alloc PE                    14063
Free PE                     3436
Total PVG                   0
Total Spare PVs             0
Total Spare PVs in use      0

   --- Physical volumes ---
   PV Name                     /dev/dsk/c11t0d0
   PV Status                   available
   Total PE                    17499
   Free PE                     3436
   Autoswitch                  On

and fuser output:

/dev/caprep:

There is not any reference to the old file systems, neither the directory. In this way , I do not know whay it is still busy.

Regards

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 09:37:03 GMT

Hi:

# ll /dev/caprep

rgs,

Re: I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 09:48:48 GMT

#ll /dev/caprep

cr--r--r-- 1 root sys 64 0x020000 Mar 16 2007 group

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 10:00:19 GMT

Hi:

do you have /etc/lvmconf/caprep.mapfile file?

# cat /etc/lvmconf/caprep.mapfile

for each lvol:

mknod /dev/caprep/rlvname1 c 64 0x020001

mknod /dev/caprep/lvname1 b 64 0x020001

mknod /dev/caprep/lvname2 b 64 0x020001

mknod /dev/caprep/rlvname2 c 64 0x020001

...

mknod /dev/caprep/lvname5 b 64 0x020001

mknod /dev/caprep/rlvname5 c 64 0x020001

# vgchange -a n caprep

# vgexport -p -m /tmp/caprep.map caprep

# vgexport -m -m /tmp/caprep.map caprep

rgs,

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 10:01:05 GMT

Hi:

do you have /etc/lvmconf/caprep.mapfile file?

# cat /etc/lvmconf/caprep.mapfile

for each lvol:

mknod /dev/caprep/rlvname1 c 64 0x020001

mknod /dev/caprep/lvname1 b 64 0x020001

mknod /dev/caprep/lvname2 b 64 0x020002

mknod /dev/caprep/rlvname2 c 64 0x020002

...

mknod /dev/caprep/lvname5 b 64 0x020005

mknod /dev/caprep/rlvname5 c 64 0x020005

# vgchange -a n caprep

# vgexport -p -m /tmp/caprep.map caprep

# vgexport -m -m /tmp/caprep.map caprep

rgs,

Re: I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 10:09:50 GMT

There is not mapfile :-(

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 11:35:39 GMT

Hi:

--- Volume groups ---

VG Name /dev/caprep

VG Write Access read/write

VG Status available

Max LV 255

Cur LV 5 <----

mknod /dev/caprep/rlvol1 c 64 0x020001

mknod /dev/caprep/lvol1 b 64 0x020001

mknod /dev/caprep/rlvol2 c 64 0x020002

mknod /dev/caprep/lvol2 b 64 0x020002

mknod /dev/caprep/rlvol3 c 64 0x020003

mknod /dev/caprep/lvol3 b 64 0x020003

mknod /dev/caprep/rlvol4 c 64 0x020004

mknod /dev/caprep/lvol4 b 64 0x020004

mknod /dev/caprep/rlvol5 c 64 0x020005

mknod /dev/caprep/lvol5 b 64 0x020005

# vgchange -a n caprep

rgs,

Re: I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 12:11:33 GMT

Hello, I have created all the special files, but I can not deactivate it, for the same reason:

vgchange: Couldn´t deactivate volume group "Caprep".

Device busy

Thank you, rariasn

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 12:18:47 GMT

Hi:

vgdisplay -v caprep

bdf | grep caprep

fuser /dev/caprep

Verify for errors in /var/adm/syslog/syslog.log file

rgs

Re: I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 12:40:47 GMT

The only purpose to remove the volume group is to use the physical disk (140GB ) , exclusively dedicated to this vg, caprep, composed of missing logical volumens. The hardware path is 0/4/0/0.0.0 and the device files are /dev/dsk/c11t0d0 and /dev/rdsk/c11t0d0.

Is it possible to "initialze" it again? The "Unconfigure" action from teh graphic SAM administrator, can not be applied because " The physycal Voleme PV cannot be removed since some of its physical extents are still in use".

I do not mind to perform any force action if I can use again . I see it is impossible to clean the old lvols and vg data.

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 12:41:28 GMT

Hi:

Do reboot the server will release the affectedVG.

rariasn.

Re: I can not remove a volume group

esmadscc01p — Thu, 28 Jul 2011 12:45:08 GMT

I can not test it until weekend, but I´ll make it.

I let you know.

Thank you very much for your help.

Re: I can not remove a volume group

rariasn — Thu, 28 Jul 2011 12:49:05 GMT

OK. Greetings

rariasn

Re: I can not remove a volume group

Pete Randall — Thu, 28 Jul 2011 12:59:51 GMT

You could try running pvcreate. The -f option is available to force the initialization of a disk that already belongs to another VG.

Re: I can not remove a volume group

esmadscc01p — Tue, 09 Aug 2011 07:02:45 GMT

Hi.

After reboot, nothing changed.

To the 'pvcreate -f /dev/rds/c11t0d0' comand, I get:

pvcreate: The physical volume "/dev/dsk/c11t0d0" is already recorded in thr "/etc/lvmtab" file.

Re: I can not remove a volume group

Hiren N Dave — Tue, 09 Aug 2011 08:25:47 GMT

Try to boot into single user mode and then vgexport the volume group.

You can also try physically detaching the disk from the server and vgexport to remove perticular vg.

Re: I can not remove a volume group

esmadscc01p — Thu, 11 Aug 2011 15:51:46 GMT

Hello,

I have detached the physical disk ( out/put ) and finally it has been released. It has been a dirty operation, with a lot of information left in /etc/lvmconf , etc, and 1 missing volume group, I am trying to restore from backup. I think any information has been corrupted

Thank you for your valious help.