topic Removing logical or Volume group in Operating System - HP-UX

Removing logical or Volume group

Gurusuma — Mon, 24 Apr 2006 06:33:14 GMT

Dear Forum friends,

I have a HPUX server with vg00,01 and 02 created.

Now I dont require vg02 and hence to free up the space I removed all the logical volme groups associated with this VG vg02 and removed vg02.

Now if I issue the command vgdisplay or lvdisplay it is displaying the error that "could find the id xxx ..yy..etc ..system is now up and working but I am not sure If I reboot system will comeup..

COuld some someone suggest how to fix this

Gurumurthy

Re: Removing logical or Volume group

Peter Godron — Mon, 24 Apr 2006 06:37:05 GMT

Hi,
would this not be the normal behaviour?
You have removed the lvols and vg, so if you now try to display the removed vg it says, it can not find them.

Please clarify the error message.
Perhaps a list of your commands may help.

If uncertain about command line use, I always recommend SAM.

Re: Removing logical or Volume group

Gurusuma — Mon, 24 Apr 2006 06:48:06 GMT

Hi Peter,

Thanks for the response.

I understand that it would be the normal behaviour,but as I said earlier I had three voume groups vg00,01 and 02,I removed only 02 and its LVMs.

Now question is ,it would have displayed other two vgs and lvms assocaited info right?

Guru.

Re: Removing logical or Volume group

RAC_1 — Mon, 24 Apr 2006 06:56:47 GMT

What are the exact commands that you when you get the error? Do you see vg02 when you do "strings /etc/lvmtab"

Re: Removing logical or Volume group

Gurusuma — Mon, 24 Apr 2006 07:36:03 GMT

I dont see the vg02 with strings command.

I sed lvremove /dev/vg02/lvol1...3

means there were three lvms,since they were mounted I used -f option as switch.

After that I used vgremove /dev/vg02.

Thats all I used,I feel after this it should show the free space added freed up from removing the vg02 .but not happening.

Guru

Re: Removing logical or Volume group

RAC_1 — Mon, 24 Apr 2006 07:51:38 GMT

Give exact steps that you used. Also, do get anything when you do vgdisplay -v vg02? anything (error messages) in syslog.log and in dmesg command?

Re: Removing logical or Volume group

Ninad_1 — Mon, 24 Apr 2006 08:12:33 GMT

Gurusuma,

Please give exact steps - command syntax followed - step by step.
Also post the following outputs - better to attach.

strings /etc/lvmtab
vgdisplay -v
ls -l /dev/vg*/*
grep vg02 /var/adm/syslog/*syslog.log

Then only we would be able to understand a bit more.

Regards,
Ninad

Re: Removing logical or Volume group

Josiah Henline — Mon, 24 Apr 2006 14:52:01 GMT

Please display the exact error message and whether or not that disk is shown in the lvmtab.

Re: Removing logical or Volume group

David Bellamy — Mon, 24 Apr 2006 15:00:25 GMT

You said you had three vg groups and you remove
one. using vgdisplay will not let you view the freed up space because you have remove any reference to the vg group. Do a pvdisplay and see which disk do not belong to a vg and that will be your free space.

Re: Removing logical or Volume group

Sanjay_6 — Mon, 24 Apr 2006 15:25:30 GMT

Hi,

My guess is that the user removed the lv's while they were still being used / mounted using 'lvremove -f" and then did a vgremove. Now the system is confused about the status of the PV's / LV's that were part of the old VG "vg02".

My suggestion would be to forcibly reboot the server, if necessary.

Hope this helps.

regds