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

[Eneko Lacunza]

What about:

vgs
sfdisk -l <your disk path>

El 22/06/15 a las 15:05, Gilberto Nunes escribió:
> 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 
> <mailto: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
>     <mailto: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
>         <mailto: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
>             <mailto: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 <tel:%2B55%20%2847%29%209676-7530>
>                 Skype: gilberto.nunes36
>
>
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>
>
>
>
>             -- 
>             Lindsay
>
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>
>
>
>
>         -- 
>
>         Gilberto Ferreira
>         +55 (47) 9676-7530 <tel:%2B55%20%2847%29%209676-7530>
>         Skype: gilberto.nunes36
>
>
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>
>
>
>
> -- 
>
> Gilberto Ferreira
> +55 (47) 9676-7530
> Skype: gilberto.nunes36
>
>
>
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