[Libguestfs] [RFC] lib: allow to specify physical/logical block size for disks

[Nikolay Ivanets]

пн, 10 лют. 2020 о 14:34 Daniel P. Berrangé <berrange at redhat.com> пише:
>
> On Sat, Feb 08, 2020 at 01:25:28AM +0200, Mykola Ivanets wrote:
> > From: Nikolay Ivanets <stenavin at gmail.com>
> >
> > I faced with situation where libguestfs cannot recognize partitions on a
> > disk image which was partitioned on a system with "4K native" sector
> > size support.
>
> What type of partition table is this problem seen with ?  MBR or GPT or
> both ?

I have virtual disk with Win 2019 installed on GPT where LBA1 (GPT
Header) at offset 4096.
I've attached the file where you can read how Windows sees its volumes.

> Regards,
> Daniel
> --
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-------------- next part --------------
********************************************************************
\\?\Volume{fc514c93-0ff8-47c3-8758-886a689928f2}\ 
  |_PartitionStyle       PARTITION_STYLE_GPT (0x1)
  |_StartingOffset       1048576 (0x100000)
  |_PartitionLength      523239424 (0x1F300000)
  |_PartitionNumber      1 (0x1)
  |_GPT_ATTRIBUTE          GPT_ATTRIBUTE_PLATFORM_REQUIRED, GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER (0x8000000000000001)
  |_GPT_PARTITION_TYPE     PARTITION_MSFT_RECOVERY (0x7)
  |_PartitionType          de94bba4-06d1-4d40-a16a-bfd50179d6ac
  |_PartitionId            fc514c93-0ff8-47c3-8758-886a689928f2
  |_Attributes             9223372036854775809 (0x8000000000000001)
  |_Name                   Basic data partition
  SPACE INFO: 
     SectorsPerCluster     : 1 (0x1);
     BytesPerSector        : 4096 (0x1000);
     ClusterSize           : 4096 (0x1000);
     TotalNumberOfClusters : 127743 (0x1F2FF);
     NumberOfFreeClusters  : 23665 (0x5C71);
 _VOLUME_DISK_EXTENTS {#1} 
       |_NumberOfDiskExtents     1 (0x1)
       |_Extents {#2}                 1 item(s)
              |_DISK_EXTENT {#3} 
                     |_DiskNumber         0 (0x0)
                     |_StartingOffset     1048576 (0x100000)
                     |_ExtentLength       523239424 (0x1F300000)
********************************************************************
\\?\Volume{3da5e9ec-72ab-4d9d-9cd0-6c2def57ab15}\
  |_PartitionStyle       PARTITION_STYLE_GPT (0x1)
  |_StartingOffset       524288000 (0x1F400000)
  |_PartitionLength      313524224 (0x12B00000)
  |_PartitionNumber      2 (0x2)
  |_GPT_ATTRIBUTE          GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER (0x8000000000000000)
  |_GPT_PARTITION_TYPE     PARTITION_SYSTEM (0x3)
  |_PartitionType          c12a7328-f81f-11d2-ba4b-00a0c93ec93b
  |_PartitionId            3da5e9ec-72ab-4d9d-9cd0-6c2def57ab15
  |_Attributes             9223372036854775808 (0x8000000000000000)
  |_Name                   EFI system partition
  SPACE INFO: 
     SectorsPerCluster     : 1 (0x1);
     BytesPerSector        : 4096 (0x1000);
     ClusterSize           : 4096 (0x1000);
     TotalNumberOfClusters : 75520 (0x12700);
     NumberOfFreeClusters  : 68834 (0x10CE2);
 _VOLUME_DISK_EXTENTS {#1} 
       |_NumberOfDiskExtents     1 (0x1)
       |_Extents {#2}                 1 item(s)
              |_DISK_EXTENT {#3} 
                     |_DiskNumber         0 (0x0)
                     |_StartingOffset     524288000 (0x1F400000)
                     |_ExtentLength       313524224 (0x12B00000)
********************************************************************
\\?\Volume{db307f1c-f43f-4507-8231-12dc7a481d6e}\
  |_PartitionStyle       PARTITION_STYLE_GPT (0x1)
  |_StartingOffset       854589440 (0x32F00000)
  |_PartitionLength      7999122833408 (0x74670E00000)
  |_PartitionNumber      4 (0x4)
  |_GPT_ATTRIBUTE          0 (0x0)
  |_GPT_PARTITION_TYPE     PARTITION_BASIC_DATA (0x1)
  |_PartitionType          ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
  |_PartitionId            db307f1c-f43f-4507-8231-12dc7a481d6e
  |_Attributes             0 (0x0)
  |_Name                   Basic data partition
_VolumeDescriptor {#1} 
      |_VolType                  Fixed (0x3)
      |_IsCSV                    False (0x0)
      |_VolumeUniqueName         \\?\Volume{db307f1c-f43f-4507-8231-12dc7a481d6e}\
      |_HasMountPoints           True (0x1)
      |_MountPoints {#2}              1 item(s)
            |_String      C:\
  SPACE INFO: 
     SectorsPerCluster     : 1 (0x1);
     BytesPerSector        : 4096 (0x1000);
     ClusterSize           : 4096 (0x1000);
     TotalNumberOfClusters : 1952910847 (0x74670DFF);
     NumberOfFreeClusters  : 1551055871 (0x5C733BFF);
 _VOLUME_DISK_EXTENTS {#1} 
       |_NumberOfDiskExtents     1 (0x1)
       |_Extents {#2}                 1 item(s)
              |_DISK_EXTENT {#3} 
                     |_DiskNumber         0 (0x0)
                     |_StartingOffset     854589440 (0x32F00000)
                     |_ExtentLength       7999122833408 (0x74670E00000)
********************************************************************
\\?\Volume{a6d10051-197c-4e18-8d60-747c2a44aa5c}\
  |_PartitionStyle       PARTITION_STYLE_GPT (0x1)
  |_StartingOffset       837812224 (0x31F00000)
  |_PartitionLength      16777216 (0x1000000)
  |_PartitionNumber      3 (0x3)
  |_GPT_ATTRIBUTE          GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER (0x8000000000000000)
  |_GPT_PARTITION_TYPE     PARTITION_MSFT_RESERVED (0x4)
  |_PartitionType          e3c9e316-0b5c-4db8-817d-f92df00215ae
  |_PartitionId            a6d10051-197c-4e18-8d60-747c2a44aa5c
  |_Attributes             9223372036854775808 (0x8000000000000000)
  |_Name                   Microsoft reserved partition
********************************************************************