Try to correct any confusion about QEMU's Byzantine disk options by
laying out the preferred "modern" options as-per:
"<danpb> (best: -device + -blockdev, 2nd obsolete syntax: -device +
-drive, 3rd obsolete syntax: -drive, 4th obsolete syntax: -hdNN)"
Signed-off-by: Alex Bennée <[email protected]>
Cc: [email protected]
Cc: Kevin Wolf <[email protected]>
Cc: Hanna Reitz <[email protected]>
Cc: Daniel P. Berrange <[email protected]>
Cc: Thomas Huth <[email protected]>
---
qemu-options.hx | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/qemu-options.hx b/qemu-options.hx
index 3f23a42fa8..d57239d364 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1105,6 +1105,19 @@ DEFHEADING()
DEFHEADING(Block device options:)
+SRST
+The QEMU block device handling options have a long history and
+have gone through several iterations as the feature set and complexity
+of the block layer have grown. Many online guides to QEMU often
+reference older and deprecated options which can lead to confusion.
+
+The recommended modern way to describe disks is to use combination of
+``-device`` to specify the hardware device and ``-blockdev`` to
+describe the backend. The device defines what the guest sees and the
+backend describes how QEMU handles the data.
+
+ERST
+
DEF("fda", HAS_ARG, QEMU_OPTION_fda,
"-fda/-fdb file use 'file' as floppy disk 0/1 image\n", QEMU_ARCH_ALL)
DEF("fdb", HAS_ARG, QEMU_OPTION_fdb, "", QEMU_ARCH_ALL)
--
2.30.2
