[Qemu-devel] [Bug 985288] [NEW] scsi disk emulation doesn't enforce FUA (Force Unit Access) in write-back mode

[Asad Saeed]

Public bug reported:

Microsoft NTFS utilizes the FUA bit in SCSI WRITE CDBs to insure
integrity when a device advertises that it has write caching enabled.
The FUA bit is meant to ensure a write is written to non-volatile
storage before returning.  This seems to not be enforced by QEMU's SCSI
emulation code.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/985288

Title:
  scsi disk emulation doesn't enforce FUA (Force Unit Access) in write-
  back mode

Status in QEMU:
  New

Bug description:
  Microsoft NTFS utilizes the FUA bit in SCSI WRITE CDBs to insure
  integrity when a device advertises that it has write caching enabled.
  The FUA bit is meant to ensure a write is written to non-volatile
  storage before returning.  This seems to not be enforced by QEMU's
  SCSI emulation code.

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