VMware vSphere SDKs and Tools 7.0

8.0 7.0 6.7 6.5

Updating Applications for Advanced Transport

To update your applications for advanced transport with managed disk, follow these steps:
  1. Find all instances of
    VixDiskLib_Connect()
     and change them to
    VixDiskLib_ConnectEx()
    .
    The vixDiskLib sample program was extended to use
    VixDiskLib_ConnectEx()
     with the
    -mod
     option.
  2. Likewise, change
    VixDiskLib_Init()
     to
    VixDiskLib_InitEx()
     and be sure to call it only once.
  3. Disable virtual machine relocation with the
    VixDiskLib_PrepareForAccess()
     call.
  4. Add parameters in the middle:
    • TRUE
       for high performance read-only access,
      FALSE
       for read/write access.
    • Snapshot
      moRef
      , if applicable.
    • NULL
       to accept transport method defaults (recommended).
  5. Re-enable virtual machine relocation with the
    VixDiskLib_EndAccess()
     call.
  6. Find
    VixDiskLib_Disconnect()
     near the end of program, and for safety add a
    VixDiskLib_Cleanup()
     call immediately afterwards.
  7. Compile with the new flexible-transport-enabled version of VixDiskLib.
    The advanced transport functions are useful for backing up or restoring data on virtual disks managed by VMware vSphere. Backup is based on the snapshot mechanism, which provides a data view at a certain point in time, and allows access to quiescent data on the parent disk while the child disk continues changing.

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