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[Qemu-devel] [Bug 985288] Re: scsi disk emulation doesn't enforce FUA (F
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [Bug 985288] Re: scsi disk emulation doesn't enforce FUA (Force Unit Access) in write-back mode |
Date: |
Thu, 19 Apr 2012 07:51:32 -0000 |
** Changed in: qemu
Assignee: (unassigned) => Paolo Bonzini (bonzini)
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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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