mirror of
https://github.com/rust-vmm/vhost-device.git
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c31cbfe8e6
Bumps the vhost-device group with 9 updates: | Package | From | To | | --- | --- | --- | | [thiserror](https://github.com/dtolnay/thiserror) | `1.0.68` | `2.0.3` | | [libc](https://github.com/rust-lang/libc) | `0.2.161` | `0.2.162` | | [tempfile](https://github.com/Stebalien/tempfile) | `3.13.0` | `3.14.0` | | [rstest](https://github.com/la10736/rstest) | `0.19.0` | `0.23.0` | | [cc](https://github.com/rust-lang/cc-rs) | `1.1.36` | `1.1.37` | | [fastrand](https://github.com/smol-rs/fastrand) | `2.1.1` | `2.2.0` | | [rstest_macros](https://github.com/la10736/rstest) | `0.19.0` | `0.23.0` | | [rustix](https://github.com/bytecodealliance/rustix) | `0.38.39` | `0.38.40` | | [thiserror-impl](https://github.com/dtolnay/thiserror) | `1.0.68` | `1.0.69` | Updates `thiserror` from 1.0.68 to 2.0.3 - [Release notes](https://github.com/dtolnay/thiserror/releases) - [Commits](https://github.com/dtolnay/thiserror/compare/1.0.68...2.0.3) Updates `libc` from 0.2.161 to 0.2.162 - [Release notes](https://github.com/rust-lang/libc/releases) - [Changelog](https://github.com/rust-lang/libc/blob/0.2.162/CHANGELOG.md) - [Commits](https://github.com/rust-lang/libc/compare/0.2.161...0.2.162) Updates `tempfile` from 3.13.0 to 3.14.0 - [Changelog](https://github.com/Stebalien/tempfile/blob/master/CHANGELOG.md) - [Commits](https://github.com/Stebalien/tempfile/compare/v3.13.0...v3.14.0) Updates `rstest` from 0.19.0 to 0.23.0 - [Release notes](https://github.com/la10736/rstest/releases) - [Changelog](https://github.com/la10736/rstest/blob/master/CHANGELOG.md) - [Commits](https://github.com/la10736/rstest/compare/v0.19.0...v0.23.0) Updates `cc` from 1.1.36 to 1.1.37 - [Release notes](https://github.com/rust-lang/cc-rs/releases) - [Changelog](https://github.com/rust-lang/cc-rs/blob/main/CHANGELOG.md) - [Commits](https://github.com/rust-lang/cc-rs/compare/cc-v1.1.36...cc-v1.1.37) Updates `fastrand` from 2.1.1 to 2.2.0 - [Release notes](https://github.com/smol-rs/fastrand/releases) - [Changelog](https://github.com/smol-rs/fastrand/blob/master/CHANGELOG.md) - [Commits](https://github.com/smol-rs/fastrand/compare/v2.1.1...v2.2.0) Updates `rstest_macros` from 0.19.0 to 0.23.0 - [Release notes](https://github.com/la10736/rstest/releases) - [Changelog](https://github.com/la10736/rstest/blob/master/CHANGELOG.md) - [Commits](https://github.com/la10736/rstest/compare/v0.19.0...v0.23.0) Updates `rustix` from 0.38.39 to 0.38.40 - [Release notes](https://github.com/bytecodealliance/rustix/releases) - [Changelog](https://github.com/bytecodealliance/rustix/blob/main/CHANGELOG.md) - [Commits](https://github.com/bytecodealliance/rustix/compare/v0.38.39...v0.38.40) Updates `thiserror-impl` from 1.0.68 to 1.0.69 - [Release notes](https://github.com/dtolnay/thiserror/releases) - [Commits](https://github.com/dtolnay/thiserror/compare/1.0.68...1.0.69) --- updated-dependencies: - dependency-name: thiserror dependency-type: direct:production update-type: version-update:semver-major dependency-group: vhost-device - dependency-name: libc dependency-type: direct:production update-type: version-update:semver-patch dependency-group: vhost-device - dependency-name: tempfile dependency-type: direct:production update-type: version-update:semver-minor dependency-group: vhost-device - dependency-name: rstest dependency-type: direct:production update-type: version-update:semver-minor dependency-group: vhost-device - dependency-name: cc dependency-type: indirect update-type: version-update:semver-patch dependency-group: vhost-device - dependency-name: fastrand dependency-type: indirect update-type: version-update:semver-minor dependency-group: vhost-device - dependency-name: rstest_macros dependency-type: indirect update-type: version-update:semver-minor dependency-group: vhost-device - dependency-name: rustix dependency-type: indirect update-type: version-update:semver-patch dependency-group: vhost-device - dependency-name: thiserror-impl dependency-type: indirect update-type: version-update:semver-patch dependency-group: vhost-device ... Signed-off-by: dependabot[bot] <support@github.com> |
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| .. | ||
| src | ||
| test | ||
| ARCHITECTURE.md | ||
| Cargo.toml | ||
| CHANGELOG.md | ||
| LICENSE-APACHE | ||
| LICENSE-BSD-3-Clause | ||
| README.md | ||
vhost-device-scsi
This is a Rust implementation of a vhost-device-scsi daemon.
Usage
Run the vhost-device-scsi daemon:
vhost-device-scsi -r --socket-path /tmp/vhost-user-scsi.sock /path/to/image.raw /path/to/second-image.raw ...
Run QEMU:
qemu-system-x86_64 ... \
-device vhost-user-scsi-pci,num_queues=1,param_change=off,chardev=vus \
-chardev socket,id=vus,path=/tmp/vhost-user-scsi.sock \
# must match total guest meory
-object memory-backend-memfd,id=mem,size=384M,share=on \
-numa node,memdev=mem
Limitations
We are currently only supporting a single request queue and do not support dynamic reconfiguration of LUN parameters (VIRTIO_SCSI_F_CHANGE).
Features
This crate is a work-in-progress. Currently, it's possible to mount and read up to 256 read-only raw disk images. Some features we might like to add at some point, roughly ordered from sooner to later:
- Write support. This should just be a matter of implementing the WRITE command, but there's a bit of complexity around writeback caching we need to make sure we get right.
- Support more LUNs. virtio-scsi supports up to 16384 LUNs per target. After 256, the LUN encoding format is different; it's nothing too complicated, but I haven't gotten around to implementing it.
- Concurrency. Currently, we process SCSI commands one at a time. Eventually, it'd be a good idea to use threads or some fancy async/io_uring stuff to concurrently handle multiple commands. virtio-scsi also allows for multiple request queues, allowing the guest to submit requests from multiple cores in parallel; we should support that.
- iSCSI passthrough. This shouldn't be too bad, but it might be a good idea to decide on a concurrency model (threads or async) before we spend too much time here.