[libvirt-users] Resizing lvm fails with fedora20

[Alex Regan]

Hi,

On 01/12/2015 03:13 AM, Michal Privoznik wrote:
> On 11.01.2015 02:57, Alex Regan wrote:
>> Hi,
>> I'm trying to resize a 15GB LVM root partition on a fedora20 server with
>> a fedora20 guest and I'm having a problem. Is this supported on fedora20?
>>
>> I recall having a similar problem (maybe even exact same problem) all
>> the way back in fedora16 or fedora17, but hoped/thought it would be
>> fixed by now?
>>
>> # virt-df -h test1-011015.img
>> Filesystem                          Size       Used  Available  Use%
>> test1-011015.img:/dev/prop/boot  476M       109M       338M   23%
>> test1-011015.img:/dev/prop/root   14G        10G       3.3G   72%
>>
>> # truncate -s 50G newimg
>> # virt-resize test1-011015.img newimg --expand /dev/sda1 --LV-expand
>> /dev/prop/root
>> Examining test1-011015.img ...
>> virt-resize: libguestfs error: lvm_set_filter: vgchange -ay:
>> /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    WARNING: Failed to connect to lvmetad: No such file or directory.
>> Falling back to internal scanning.
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    Couldn't find device with uuid uA2ju5-EElD-xgB3-EE7J-gJ55-UnkY-Vq2l6H.
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    /run/lvm/lvmetad.socket: connect failed: No such file or directory
>>    Refusing activation of partial LV home. Use --partial to override.
>>
>
> I thought this has been already fixed:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1016218

It looks like that only applies to RHEL6?

Can you track down whether there was a fedora20 update for this?

>> What are my alternatives for resizing a root partition on LVM?
>
> I guess updating lvm2. Seems like you won't be able to use pure vgchange
> and do thing by hand anyway.

Do you know where there is a HOWTO of some sort to do it using lvm from 
within the virtual machine? Is that even possible?

Thanks,
Alex



>
> Michal