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...different patch series posted on the mailing list sparked a discussion on block device operations One is Jeff Cody's multiple-device snapshot series, documented [[Features/SnapshotsMultipleDevices|here]].

* the new block-copy feature can assert on unaligned images [https://lists.gnu.org/archive/ == Targeted Features ==

features that change the format in an incompatible way, so that older increase in order to introduce some incompatible features, however it's

=== New deprecated options and features === * Parsing of key,value pair filenames for the RBD block device

...QAPI/GuestAgent Guest Agent]. Please check the guest [http://wiki.qemu.org/Features/QAPI/GuestAgent Guest Agent] page for design and implementation details. The two main guest agent features of interest to live snapshots are:

...ing to I/O errors; patch proposed: https://lists.gnu.org/archive/html/qemu-block/2022-08/msg00375.html == Targeted Features ==

...host-user-blk device backend although the QEMU block layer has a number of features that make QEMU desirable as a software-defined storage appliance in its own

uint64_t features; /* format feature bits */ /* if (features & QED_F_BACKING_FILE) */

...It should integrate into the existing build system. Currently, we allow features to be specified in for inclusion in a boolean fashion (either 'y' or 'n' to ...mechanism to support third party extensions to QEMU or out of tree drivers/features

* The "autoload" parameter of the "block-dirty-bitmap-add" QMP command has been removed (it's no longer needed). === New deprecated options and features ===

Future qemu is expected to support these features (some already implemented): = Live features =

* mps3-an524: Fix MPC setting for SRAM block == Targeted Features ==

...s without a native code generator can use the TCG interpreter (TCI). See [[Features/TCI]] for more information. == Block devices (disks) ==

...cpu-add QMP command. More details [[Features/CPUHotplug#cpu-add_interface|Features/CPUHotplug]]. ...ltered-features" to allow introspection of supported and not supported CPU features.

...registers mean we can boot more recent Linux kernels that probe for these features * Removed dependency on external kernel headers, all supported KVM features are now built into the binary

...[https://qemu-project.gitlab.io/qemu/about/removed-features.html 'Removed features' ] page for details of suggested replacement functionality === New deprecated options and features ===

* Fixed block load instructions regression happened in 1.0 release. ...g a pflash drive. This feature is not supported when KVM is enabled. See [[Features/PC System Flash]] for more information.

== Block subsystem == * Tested all 9p file system ( security models, features like mmap, locking, posixacl, zerocopy) using the basic fs tests, I/O and s

* Host floppy device pass-through (block driver “host_floppy”) has been removed; it is still possible to use the * Block device parameter aio=native has no effect without cache.direct=on. It will

...size configurations, with the logical block size smaller than the physical block size, are rejected. ...eprecated Features"] appendix for the full list of historically deprecated features/options.