The vendor specific designator in the Device Identification VPD page has
two problems:
1. It defaults to the BlockBackend name (-drive id=...), which everyone
expected to be a host detail that the guest never sees
2. With -blockdev based setups it defaults to an empty string; if this
default is used with more than one disk, the guest OS will interpret
this as a single multipath disk.
We can address problem 2 immediately, and start running the deprecation
clock for problem 1.
Related bug reports:
https://bugzilla.redhat.com/show_bug.cgi?id=1669446
https://bugzilla.redhat.com/show_bug.cgi?id=1668248
Kevin Wolf (3):
scsi-disk: Don't use empty string as device id
scsi-disk: Add device_id property
scsi-disk: Deprecate device_id fallback to BlockBackend name
hw/scsi/scsi-disk.c | 41 ++++++++++++++++++++++++++++-------------
qemu-deprecated.texi | 22 +++++++++++++++++++++-
2 files changed, 49 insertions(+), 14 deletions(-)
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2.20.1