[linux-lvm] Forcibly remove broken disk from LV

[linux-lvm] Forcibly remove broken disk from LV

[Turbo Fredriksson]

I have a disk that only gives SCSI errors etc which
I want to remove from the VG. But vgreduce only hangs
and so does pvremove...

If I physically remove the disk, the vg/pv/lv etc isn't
accessible so the vgreduce won't work (claims that it
can't find any PV's etc).

So how do I remove the disk?

Re: [linux-lvm] Forcibly remove broken disk from LV

[Bryn M. Reeves]

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Turbo Fredriksson wrote:
> I have a disk that only gives SCSI errors etc which
> I want to remove from the VG. But vgreduce only hangs
> and so does pvremove...
> 
> If I physically remove the disk, the vg/pv/lv etc isn't
> accessible so the vgreduce won't work (claims that it
> can't find any PV's etc).
> 
> So how do I remove the disk?
> 

You can activate what's left of the volume group with:

vgchange --partial -ay <VolGroup>

You can remove the missing PV from the VG with:

vgreduce --removemissing <VolGroup>

Note that this will also remove any logical volumes that were using the
missing physical volume. You can run it with --test first to see what
effect it will have.

Regards,
Bryn.
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Re: [linux-lvm] Forcibly remove broken disk from LV

[Turbo Fredriksson]

Quoting "Bryn M. Reeves" <breeves@redhat.com>:

> You can activate what's left of the volume group with:
> vgchange --partial -ay <VolGroup>

Tried that but it didn't seem to be working:

----- s n i p -----
root@pegasos:~# vgchange --partial -ay movies
  Partial mode. Incomplete volume groups will be activated read-only.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Device /dev/ioerror not found.
  device-mapper: reload ioctl failed: Invalid argument
  device-mapper: reload ioctl failed: Invalid argument
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Device /dev/ioerror not found.
  device-mapper: reload ioctl failed: Invalid argument
  1 logical volume(s) in volume group "movies" now active
root@pegasos:~# vgdisplay
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find all physical volumes for volume group movies.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find all physical volumes for volume group movies.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find all physical volumes for volume group movies.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find all physical volumes for volume group movies.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find all physical volumes for volume group movies.
  Couldn't find device with uuid 'nqj4V1-CxT3-At8I-Vc0h-E6iu-6jY3-a6z0A3'.
  Couldn't find all physical volumes for volume group movies.
  Volume group "movies" not found
----- s n i p -----

I was supposed to do this after physically removing/disconnecting the
broken disk, right?


Also, i noticed that I had the /dev/mapper/movies-pvmove0 block device.
How do i cancel the pvmove I initiated a couple of days ago (tried
to move hdb to availible space on VG - this availible space is/was
on the - now - broken disk)? The command 'pvmove --abort' won't
work - it also hangs...