[linux-lvm] Copying a raw disk image to LVM2

[emmanuel segura]

the lvm metadata is stored in the begining of the physical volume, the
logical volume is simple block device, so using dd you don't overwrite
any lvm header.

2016-07-09 19:33 GMT+02:00 Марк Коренберг <socketpair at gmail.com>:
> One note: `sync` does not syncs written data, since it affects only
> data, written through filesystem. You should use `dd ....
> conv=fdatasync` instead.
>
> 2016-07-09 22:00 GMT+05:00 Digimer <lists at alteeve.ca>:
>> On 08/07/16 11:52 AM, Brian McCullough wrote:
>>>
>>> I have been hunting for some time over the past couple of days, and find
>>> several documentss that talk about converting from an LVM2 volume to a
>>> raw disk image for Xen, but nothing about the reverse.
>>>
>>> I have a VHD disk file that I would like to put on to an LVM2 volume,
>>> like my other DomU guests.
>>>
>>> I can see using dd, but am concerned about overwriting the LVM2 header.
>>>
>>>
>>> Does anybody have any suggestions?
>>
>> I've done this with KVM before just fine. The LV metadata won't be
>> overwritten when you write to the actual LV. So this would work fine;
>>
>> dd if=/path/to/image.raw of=/dev/vg0/lv_foo bs=4M; sync
>>
>> Then just change your server's definition to point at the LV instead of
>> the raw file and voila.
>>
>> --
>> Digimer
>> Papers and Projects: https://alteeve.ca/w/
>> What if the cure for cancer is trapped in the mind of a person without
>> access to education?
>>
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>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>
>
> --
> Segmentation fault
>
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