From a1b40bda089e39b4dfad3cea72a696eb7bdef58e Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Mon, 22 Jun 2020 11:42:19 +0200 Subject: blockdev: Deprecate -drive with bogus interface type Drives with interface types other than if=none are for onboard devices. Unfortunately, any such drives the board doesn't pick up can still be used with -device, like this: $ qemu-system-x86_64 -nodefaults -display none -S -drive if=floppy,id=bogus,unit=7 -device ide-cd,drive=bogus -monitor stdio QEMU 5.0.50 monitor - type 'help' for more information (qemu) info block bogus: [not inserted] Attached to: /machine/peripheral-anon/device[0] Removable device: not locked, tray closed (qemu) info qtree bus: main-system-bus type System [...] bus: ide.1 type IDE dev: ide-cd, id "" ---> drive = "bogus" [...] unit = 0 (0x0) [...] This kind of abuse has always worked. Deprecate it: qemu-system-x86_64: -drive if=floppy,id=bogus,unit=7: warning: bogus if=floppy is deprecated, use if=none Signed-off-by: Markus Armbruster Message-Id: <20200622094227.1271650-9-armbru@redhat.com> --- docs/system/deprecated.rst | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'docs/system') diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index 6f8bf19d37..728233a8ff 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -190,6 +190,14 @@ become -device floppy,unit=1,drive=... +``-drive`` with bogus interface type +'''''''''''''''''''''''''''''''''''' + +Drives with interface types other than ``if=none`` are for onboard +devices. It is possible to use drives the board doesn't pick up with +-device. This usage is now deprecated. Use ``if=none`` instead. + + QEMU Machine Protocol (QMP) commands ------------------------------------ -- cgit 1.4.1