[Libguestfs] Bug: windows server 2012R2 fails to start after virt-resize

[Pino Toscano]

On Thursday 10 December 2015 13:55:26 Maxim Perevedentsev wrote:
> Hello everyone!
> 
> After I ran virt-resize (v1.31.28) on my disk with win2012R2
> (partition table [GPT]: VFAT (100M), unknown (128M), NTFS (64G))
> My VM fails to boot: black screen informing that
> 
> Windows failed to start...
> Status: 0xc000000e
> Info: an unexpected error has occured.
> 
> After some investigations, I realized that Windows remembers the GUID of 
> disk it is installed to.
> If I execute
> 
>  >guestfish -a win2012.hdd -v
> ...
>  ><fs> debug sh 'sgdisk -p /dev/sda'
> guestfsd: main_loop: new request, len 0x54
> /bin/sh -c sgdisk -p /dev/sda
> Disk /dev/sda: 136314880 sectors, 65.0 GiB
> Logical sector size: 512 bytes
> Disk identifier (GUID): B3108127-1775-47B7-ABC1-A56D6761C894
> Partition table holds up to 128 entries
> First usable sector is 34, last usable sector is 136314846
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 2101181 sectors (1.0 GiB)
> 
> Number  Start (sector)    End (sector)  Size       Code  Name
>     1            2048          206847   100.0 MiB   EF00  EFI
>     2          206848          468991   128.0 MiB   0C01  Microsoft
>     3          468992       134215679   63.8 GiB    0700  Basic
> guestfsd: main_loop: proc 76 (debug) took 0.00 seconds
> 
> *set the GUID of original disk*
>  ><fs> debug sh 'sgdisk -U ADAA2225-3F89-4F2C-91DF-02F3E0C2ED67 /dev/sda'
> guestfsd: main_loop: new request, len 0x7c
> /bin/sh -c sgdisk -U ADAA2225-3F89-4F2C-91DF-02F3E0C2ED67 /dev/sda
> [   70.170139]  sda: sda1 sda2 sda3
> The operation has completed successfully.
> guestfsd: main_loop: proc 76 (debug) took 1.02 seconds
> The operation has completed successfully.
> 
> After that Windows successfully boots from resized image.
> 
> I suggest adding get/set disk GUID to API and to virt-resize as well.
> Otherwise it is impossible to resize disks with this particular OS (not 
> only this one, possibly).

This is supposed to be done already, see
  https://bugzilla.redhat.com/show_bug.cgi?id=1189284
(and the commits linked to its comment #9).

Please provide a full log of virt-resize with -v -x.


-- 
Pino Toscano
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