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[Bug 985288] Re: scsi disk emulation doesn't enforce FUA (Force Unit Acc
From: |
Paolo Bonzini |
Subject: |
[Bug 985288] Re: scsi disk emulation doesn't enforce FUA (Force Unit Access) in write-back mode |
Date: |
Wed, 08 Sep 2021 15:24:04 -0000 |
Fixed in 1.1 (commit 7e8c49c56154ab5c45d4f07edf0c22728735da35). :)
** Changed in: qemu
Status: Won't Fix => Fix Released
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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:
Fix Released
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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