[PVE-User] Shrink qemu raw image...

[Gilberto Nunes]

Ok guys...

All those steps I already perform...
I can shrink fs+partition+lvm inside the guest... Everything is ok!
But, when I perform this:

qemu-img resize vm.raw -3100G

the guest crash!

The raw image, on Proxmox fs has 3,9 TB...
Inside the guest, I have this:

df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_bancosiscobra-lv_root
                       50G  4,7G   43G  11% /
tmpfs                 939M     0  939M   0% /dev/shm
/dev/sda2             485M   67M  393M  15% /boot
/dev/mapper/vg_bancosiscobra-lv_home
                      640G  540G   68G  89% /home

With the qemu-img resize command showing above, I managed to shrink raw
image to 800GB, more than sufficient to boot the machine...
But no way! I get error inside the guest...

My next shot will be this tutorial:

http://dnaeon.github.io/resizing-a-kvm-disk-image-on-lvm-the-easy-way/

2015-06-22 9:57 GMT-03:00 Yannis Milios <yannis.milios at gmail.com>:

> First try to shrink fs+partition+lvm inside guest vm with gparted as
> Lindsay suggested.
>
> Reboot the VM to check if resize completed successfully.
> Check actual fs+partition+lvm sizes inside VM and verify their total size.
>
> Shutdown VM and try to resize raw disk so that the total size is bigger at
> least some MB than the actual size.
>
> For example if actual size is 1Tb resize it to 1.2-1.3 Tb just to be safe.
>
> Try booting the VM again.
>  On 22 Jun 2015 13:37, "Gilberto Nunes" <gilberto.nunes32 at gmail.com>
> wrote:
>
>> So, inside the VM I managed to reduce the LVM and the Filesystem...
>> But, when I try to use qemu-img resize, perhaps I mistake something,
>> because the crash down in kernel panic, 'cause not found and partitions,
>> even the LVM!
>>
>> Are you sure that gparted live iso is safe???
>>
>> Thanks
>>
>> 2015-06-22 9:25 GMT-03:00 Lindsay Mathieson <lindsay.mathieson at gmail.com>
>> :
>>
>>> Use the GPartEd Live ISO (http://gparted.org/download.php) to resize
>>> the LVM *and* the partiton, then qemu-img to shrink it.
>>>
>>>
>>>
>>> On 22 June 2015 at 21:50, Gilberto Nunes <gilberto.nunes32 at gmail.com>
>>> wrote:
>>>
>>>> Hi guys
>>>>
>>>> I was able to reduce LVM and root/home partition inside a certain VM,
>>>> runnning on Proxmox.
>>>> The VM has raw image.
>>>> This image was 4 TB of size..
>>>> But, when I try using command:
>>>>
>>>> qemu-img resize vm.raw -XXXXG
>>>>
>>>> The VM get crash! No partition remain....
>>>>
>>>> So I thought use virt-resize to make this operation....
>>>> I can use perhaps, other host, with virt-manager and other virt tools
>>>> installed, shrink the raw image with virt-resize and get use the resulting
>>>> image to new VM on Proxmox...
>>>>
>>>> Or, maybe you guys, has another solution...??
>>>>
>>>> Thanks
>>>>
>>>> --
>>>>
>>>> Gilberto Ferreira
>>>> +55 (47) 9676-7530
>>>> Skype: gilberto.nunes36
>>>>
>>>>
>>>> _______________________________________________
>>>> pve-user mailing list
>>>> pve-user at pve.proxmox.com
>>>> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>>>
>>>>
>>>
>>>
>>> --
>>> Lindsay
>>>
>>> _______________________________________________
>>> pve-user mailing list
>>> pve-user at pve.proxmox.com
>>> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>>
>>>
>>
>>
>> --
>>
>> Gilberto Ferreira
>> +55 (47) 9676-7530
>> Skype: gilberto.nunes36
>>
>>
>> _______________________________________________
>> pve-user mailing list
>> pve-user at pve.proxmox.com
>> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>
>>


-- 

Gilberto Ferreira
+55 (47) 9676-7530
Skype: gilberto.nunes36
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