Hi John, This issue can only be reproduced on Windows 10. I've observed and
compared the behavior of Windows 10 and Windows 7. It seems Windows 7 wouldn't
disable the PCI_COMMAND_MASTER flag when disabling ahci devices. That's why
this issue won't happen on Win7. Here's the trace log on both
If Windows 10 guests have enabled 'turn off hard disk after idle'
option in power settings, and the guest has a SATA disk plugged in,
the SATA disk will be turned off after a specified idle time.
If the guest is live migrated or saved/loaded with its SATA disk
turned off, the following error will
