Removing a vg that is stuck

[Marty Metras]

I had a drive fail.
In most cases I would copy the data and drop the the whole thing amd make sure both drives (Mirror) are good and then recreate the mount point and restor the data. This works even thought I know there other ways.
This time when I try to remover the volume group it is telling me it is busy and it wont let me.
I had this happen a long time ago but cant find my notes.
Can you help.
The mount is gown but the lv and vg are still there. There is no data to be lost. and it is 2 drives mirrored.
I'm stuck!
Marty

[Victor Fridyev]

Hi,

If
vgchange -a n vgname
vgexport vgname
does not work, you have to reboot computer to single user mode and vgexport the volume group.

HTH

[Christian Tremblay]

You say you have two mirrored drive in your vg and one failed.

Why would you have to remove the VG and lvols, I don't understand. You only have to replace the bad drive and resync no ??

[Marty Metras]

I get
root:/ vgchange -a n /dev/vg12
vgchange: Couldn't deactivate volume group "/dev/vg12":
Device busy

root:/ fuser -u /dev/vg12
/dev/vg12:

root:/ fuser -cu /dev/vg12
/dev/vg12: fuser: could not find file system mounted at /dev/vg12.
root:/ fuser -u /dev/vg12/data12
/dev/vg12/data12:

Looks to be a re-boot?
Marty

[Marty Metras]

Christian,
ther server is a 6 hour drive from here. No data on it. And I can stop the allerts by disableing it completelly untile I have time to deal with it. It never has been a problem in the past.

[erics_1 · Accepted solution]

Is the drive still installed and part of the vg? If so, can you vgreduce it and then try and remove the vg?

lvreduce -m 0 /dev/vgxx/lvolxx /dev/dsk/cxtxdx
vgreduce /dev/vgxx /dev/dsk/cxtxdx
vgchange -a n vgxx
vgexport vgxx


Regards,
Eric

[Marty Metras]

Thanks Eric,
It is a done deal.
All is well now.

Marty

[Florian Heigl (new acc)]

There's a few more handy commands for such situations:

vgreduce -u
( get rid of a failed disk that failed during i.e. downtime and was replaced to another scsi ID )

pvchange -a n
( put a PV to LVM 'unavailable' state, that requires 11.11 or 11.23 )

[Torsten.]

@Florian:

vgreduce -u?

It should be "vgreduce -f" or "-l", isn't it?