Error to reduce one disk in my VG

[Harrison M Leal]

When i try remove one disk of my VG. the message is "vgreduce: Physical volume "/dev/dsk/c42t2d4" does not belong to volume group "/dev/sl3vgl39".
this is command vgreduce /dev/sl3vgl39 /dev/dsk/c42t2d4.

I run command pvdisplay -v /dev/dsk/c42t2d4 and see that i have one lost lvol , because i have "???" in status field

[Printaporn_1]

what is the result of

strings /etc/lvmtab

[Harrison M Leal]

/dev/vg00
/dev/dsk/c1t2d0
/dev/dsk/c2t2d0
/dev/sl3vgl39
/dev/dsk/c42t1d4
/dev/dsk/c9t0d2
/dev/dsk/c9t0d3
/dev/dsk/c9t0d4

[Fabio Ettore]

Hi Harrison,

are you sure that /dev/dsk/c42t2d4 is correct? Into /etc/lvmtab it there isn't!
Then either it has already been removed or it doesn't exist.
Anyway '???' in status field means that physical volume/LUN had problems and cannot recognize on system.
Any messages in /var/adm/syslog/syslog.log about disk problems?

It sounds like an hw problem.

Best regards,
Ettore

[RAC_1]

You do not have that PV in /etc/lvmtab.

Missing pv can be removed from that vg.

vgreduce -f vgxx

Anil

[Ashwani Kashyap]

The ghost disks can be removed by :
#vgreduce -f /dev/vg_name .

But first , backup your VG and lvmtab .

[Harrison M Leal]

The disk is c42t1d4

The new meesage is vgreduce: Physical volume "/dev/dsk/c42t1d4" could not be removed since some of its
physical extents are still in use. This message it occurs because i have one lost lvol with status "???"

[Ashwani Kashyap]

if none of the extents in the lost LV is used then remove the LV first with lvremove and then try to do the vgreduce .

[Todd McDaniel_1]

Hopefully you have a good backup of this VG...

Okay, you will need to lvreduce the Lvol and remove any attachment to the disk involved.

lvreduce the lvols which reside on this disk and then you should be able to remove the disk from the VG without doing a vgscan.

[Sanjay_6 · Accepted solution]

Hi Harrison,

Try this link below on how to first get the lost lv back and then remove it using lvremove. Then do a vgreduce.

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000065011327

The ITRC doc id is KBRC00005706

Hope this helps.

Regds