[linux-lvm] merge two lvms on same VG

[Scott Merrilees]

Use vgcfgbackup then edit the backup, then restore the edited backup. You
might have to create a test lv with similar geometry to see how the lv is
represented in the config file.
On Sep 10, 2012 11:40 PM, "tariq wali" <ganaiwali at gmail.com> wrote:

> thanks for the reply , but wouldn't that merge LV's from two different
> volume groups and for some weird requirement I wanted to merge LV's from
> the same VG , say
>
> merge /dev/vg0/data and /dev/vg0/data1 into a  merged volume without any
> data loss .
>
> On Mon, Sep 10, 2012 at 4:02 PM, Fran Garcia <franchu.garcia at gmail.com>wrote:
>
>> On Wed, Sep 5, 2012 at 1:16 PM, tariq wali <ganaiwali at gmail.com> wrote:
>> > Hi, I had a situation to combine two LVM's on the same VG , other than
>> > wiping the existing ones and recreating a new one is there a way to
>> merge
>> > the two on same VG ?
>>
>> vgmerge.  You need to have the source VG with all your LVs inactive
>> and the PE size must be the same in both VGs.
>>
>>
>> Basically this would be:
>>
>> lvchange -a n /dev/vg02/lv01
>> lvchange -a n /dev/vg02/lv02
>> lvchange -a n /dev/vg02/lv03
>> ...
>> vgmerge vg01 vg02
>> vgchange -ay
>>
>>
>> this would put all the LVs from vg02 into the vg01 VG.
>>
>> HTH
>>
>> _______________________________________________
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>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
>
>
>
> --
> *Tariq Wali.*
>
>
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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