Features/SCSI: Difference between revisions
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== Links == | == Links == | ||
* [http://github.com/bonzini/qemu/commits/scsi-addr git tree] (branch scsi-addr) | * [http://github.com/bonzini/qemu/commits/scsi-addr git tree] (branch scsi-addr) | ||
Revision as of 17:05, 30 September 2011
Summary
Improving the SCSI subsystem lays the ground for a more flexible and scalable virtual storage architecture.
Owner
- Name: Paolo Bonzini
- Email: pbonzini@redhat.com
Description
Shortcomings of virtio-blk include a small feature set (requiring frequent updates to both the host and the guests) and limited scalability. Both of these problems can be improved, while preserving virtio-blk's high performance, by basing a next-generation virtual storage architecture on the SCSI command set.
As a prerequisite for implementing the virtio SCSI HBA, several improvements were necessary in the SCSI subsystem of QEMU.
Status
The following improvements were done to the SCSI subsystem:
- Improved (and less buggy) modeling of SCSI requests
- Flexible SCSI addressing (channel/target/LUN)
- Improved consistency with the SCSI specifications (SAM, SPC, SBC)
- Improved support for emulated SCSI CD-ROM drives (MMC)
- Migration support
Links
- git tree (branch scsi-addr)