...contains block layer and storage features that have been proposed. These features may not be in active development and questions about them should be address
== Core block layer ==
1 KB (196 words) - 10:51, 11 November 2020
Supporting asynchronous I/O in the NBD block device and qemu-nbd server makes it easier to use high-performance remote s
...for using remote storage within QEMU. NBD can also be coupled with other features such as streaming or copy-on-read. However, the NBD implementation in QEMU
932 bytes (132 words) - 14:56, 11 October 2016
..., Ceph). On Linux the cgroups blkio-controller supports I/O throttling on block devices but is a relatively recent feature. More importantly, there is no
The disk I/O limits feature introduces QEMU block layer I/O limits together with command-line and QMP interfaces for configur
1 KB (211 words) - 14:54, 11 October 2016
=== Removed features and incompatible changes ===
...[https://qemu-project.gitlab.io/qemu/about/removed-features.html 'Removed features'] page for details of suggested replacement functionality.
2 KB (214 words) - 15:30, 15 April 2024
...scales to several hundreds nodes, and supports advanced volume management features such as snapshot, cloning, and thin provisioning.
...no central node such as a meta-data server. This design enables following features.
2 KB (247 words) - 14:55, 11 October 2016
'''ICH9 block diagram'''
'''Intel Edison block diagram'''
2 KB (269 words) - 14:56, 9 July 2020
...arushi Mehta is working on the project for Outreachy. Project status is [[Features/IOUring|here]].
* Extending block/file-posix.c to use io_uring
2 KB (365 words) - 15:12, 17 May 2019
Block jobs, and other QAPI operations, may modify and impact the
operations safely, we need a mechanism to block and gate operations,
4 KB (709 words) - 18:15, 14 September 2016
| '''1 - Extend block/file-posix.c to use io_uring.'''
| '''6 - Add a fast path when QEMU block layer features are not in use .'''
2 KB (234 words) - 18:17, 23 May 2019
...out how much coverage of library functions you are doing. As QEMU's basic block boundaries are naturally at branch points you could do all of this pretty e
* See [[Features/TCGPlugins]]
891 bytes (140 words) - 22:19, 17 February 2021
==== Block devices ====
...and can be used by firmware directly. This will in the future enable new features without modifications of all firmware components (SeaBIOS, OVMF, CoreBoot)
4 KB (563 words) - 11:31, 10 December 2013
* Both to be solved by block-queue
...when the old one is full - and that one we don't even read, but write, so block-queue will help
4 KB (552 words) - 08:57, 12 October 2016
..., and the bit is 1 if the block is in the FVD image. The default size of a block is 64KB, same as the cluster size of QCOW2. To represent the state of a 1TB
=Important Features=
4 KB (688 words) - 14:45, 11 October 2016
...ts/qemu-iotests/. It contains test for disk image formats and block layer features.
...lative to the build directory) is the script to run tests. Tests exercise block I/O operations using qemu-img(1), qemu-io(1), and sometimes by running QEMU
2 KB (298 words) - 10:00, 12 October 2016
* Various minor bugfixes; no new features in this release.
=== Block devices ===
4 KB (589 words) - 12:24, 19 February 2013
| [[Planning/SoftFeatureFreeze|Soft feature freeze]]. All features
should have patches on the list by this date; major features should
4 KB (636 words) - 08:31, 12 October 2016
...or Mode Execution Prevention) and SMAP (Supervisor Mode Access Prevention) features of newer x86 processors.
...se, bmi1, hle, avx2, smep, bmi2, erms, invpcid, rtm) and "Opteron_G5" (new features: tbm, f16c, fma)
6 KB (951 words) - 16:38, 15 January 2013
* snowridge cpu name/features
* coverity issue in block/nvme
3 KB (488 words) - 20:51, 5 November 2019
To record and replay block operations the drive must be configured
==Features to add==
4 KB (568 words) - 08:17, 2 March 2017
...l future writes will be redirected into a separate location. The previous block device has a consistent state whereas it represents a point-in-time snapsho
The merge_disk command will copy the allocated block content into the backing file and once the image is empty, reopen the backi
4 KB (663 words) - 14:43, 11 October 2016
