[linux-lvm] Unable to convert a broken LVM2 RAID1 to Linear volume

[Marian Csontos]

On 10/23/2013 06:50 PM, Shi Jin wrote:
> Hi there,
>
> I have setup a LVM2 raid1 mirror with
>     lvconvert  -m 1 --type raid1 /dev/vg_data/lv_test /dev/sdd
> and then after I remove one of its legs, the remaining leg keeps on
> working just fine. However, I then want to convert this to a simple
> Linux volume.
>
> it would fail:
>
> [root at shi-rhel63 ~]# lvconvert -m 0 /dev/vg_data/lv_test
>    Couldn't find device with uuid QpjTRd-Cc0o-RC0y-7Gz8-GQ4u-25FM-0vO4xt.
>    Cannot change VG vg_data while PVs are missing.
>    Consider vgreduce --removemissing.

Following worked for me except I ended up with unclean FS:

     lvconvert -m 0 --repair -f vg_data/lv_test

-- Marian

>
> removemissing not working either
>
> [root at shi-rhel63 ~]# vgreduce  --removemissing vg_data
>    Couldn't find device with uuid QpjTRd-Cc0o-RC0y-7Gz8-GQ4u-25FM-0vO4xt.
>    WARNING: Partial LV lv_test needs to be repaired or removed.
>    WARNING: Partial LV lv_test_rmeta_1 needs to be repaired or removed.
>    WARNING: Partial LV lv_test_rimage_1 needs to be repaired or removed.
>    There are still partial LVs in VG vg_data.
>    To remove them unconditionally use: vgreduce --removemissing --force.
>    Proceeding to remove empty missing PVs.
>
> What should I do in my case to convert the LV to linear?
>
> My OS information:
>
> [root at shi-rhel63 ~]#  cat /etc/redhat-release
> Red Hat Enterprise Linux Server release 6.3 (Santiago)
> [root at shi-rhel63 ~]# uname -a
> Linux shi-rhel63 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13 18:24:36 EDT
> 2012 x86_64 x86_64 x86_64 GNU/Linux
> [root at shi-rhel63 ~]# lvm version
>    LVM version:     2.02.95(2)-RHEL6 (2012-05-16)
>    Library version: 1.02.74-RHEL6 (2012-05-16)
>    Driver version:  4.22.6
>
>
> Thanks a lot.
>
> Shi
>
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