https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236042
Bug ID: 236042
Summary: Windows Server 2016 Hyper-V snapshot triggers SCSI
errors
Product: Base System
Version: 12.0-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: alex.gacov...@gmail.com
Hi,
Currently running FreeBSD 12.0-RELEASE in a Hyper-V Gen 2 with a SCSI virtual
disk.
When Veeam backup takes a hyperv snapshot of the running vm this is printed on
the console.
Feb 21 08:51:40 8797web01 kernel: hvtimesync0: RTT
Feb 21 08:51:40 8797web01 kernel: (da0:storvsc0:0:0:0): WRITE(10). CDB: 2a 00
0a 6e 5a b0 00 00 08 00
Feb 21 08:51:40 8797web01 kernel: (da0:storvsc0:0:0:0): CAM status: SCSI Status
Error
Feb 21 08:51:40 8797web01 kernel: (da0:storvsc0:0:0:0): SCSI status: Check
Condition
Feb 21 08:51:40 8797web01 kernel: (da0:storvsc0:0:0:0): SCSI sense: UNIT
ATTENTION asc:3f,2 (Changed operating definition)
Feb 21 08:51:40 8797web01 kernel: (da0:storvsc0:0:0:0): Retrying command (per
sense data)
Feb 21 08:54:33 8797web01 kernel: (da0:storvsc0:0:0:0): WRITE(10). CDB: 2a 00
03 b3 14 68 00 00 40 00
Feb 21 08:54:33 8797web01 kernel: (da0:storvsc0:0:0:0): CAM status: SCSI Status
Error
Feb 21 08:54:33 8797web01 kernel: (da0:storvsc0:0:0:0): SCSI status: Check
Condition
Feb 21 08:54:33 8797web01 kernel: (da0:storvsc0:0:0:0): SCSI sense: UNIT
ATTENTION asc:3f,2 (Changed operating definition)
Feb 21 08:54:33 8797web01 kernel: (da0:storvsc0:0:0:0): Retrying command (per
sense data)
Could it be something is still trying to write to the disk when hyperv signals
the HV VSS driver to freeze the file system?
The system has 1 virtual disk with 3 partitions.
* EFI boot
* swap
* UFS root file system
Thank you.
Cheers,
Alex.
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