[Libguestfs] [PATCHv2 3/3] resize: preserve GPT disk GUID.

Changed disk GUID makes some OSes fail to boot. To enable virt-resize to support such OSes we have to preserve disk GUID. --- resize/resize.ml | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/resize/resize.ml b/resize/resize.ml index d6dd9a5..8ff4793 100644 --- a/resize/resize.ml +++ b/resize/resize.ml @@ -407,6 +407,13 @@ read the man page virt-resize(1). error (f_"%s: unknown partition table type\nvirt-resize only supports MBR (DOS) and GPT partition tables.") (fst infile) in + let disk_guid = + match parttype with + | MBR -> None + | GPT -> + try Some (g#part_get_disk_guid "/dev/sda") + with G.Error _ -> None in + (* Build a data structure describing the source disk's partition layout. *) let get_partition_content = let pvs_full = Array.to_list (g#pvs_full ()) in @@ -977,7 +984,10 @@ read the man page virt-resize(1). let last_error = ref "" in let rec initialize_partition_table g attempts = let ok = - try g#part_init "/dev/sdb" parttype_string; true + try + g#part_init "/dev/sdb" parttype_string; + may (g#part_set_disk_guid "/dev/sdb") disk_guid; + true with G.Error error -> last_error := error; false in if ok then g, true else if attempts > 0 then ( -- 1.8.3.1