Features/VirtioSCSI: Difference between revisions
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= Future tasks = | = Future tasks = | ||
* Pick up vhost-scsi work again: | * Pick up vhost-scsi work again: | ||
** Port QEMU hw/virtio-scsi.c vhost-scsi support onto latest code | ** Port QEMU hw/virtio-scsi.c vhost-scsi support onto latest code; add QEMU Object Model (QOM) support | ||
** Port LIO vhost-scsi code onto latest lio.git code | ** to the vhost-scsi device | ||
** Port LIO vhost-scsi code onto latest lio.git code and spec | |||
** Ensure vhost-scsi I/O still works | ** Ensure vhost-scsi I/O still works | ||
** Design libvirt integration for LIO | ** Design libvirt integration for LIO | ||
Revision as of 16:34, 13 February 2012
Overview
A virtio storage interface for efficient I/O that overcomes virtio-blk limitations and supports advanced SCSI hardware.
Status
- Virtio device specification
- Linux guest driver
- Patch on mailing list
- https://lkml.org/lkml/2012/2/5/75
- QEMU hardware emulation using SCSI emulation
- Patches on mailing list
- http://lists.gnu.org/archive/html/qemu-devel/2012-01/msg02012.html
- QEMU hardware emulation using vhost-scsi
- (Stalled) work-in-progress, contact Stefan
- http://repo.or.cz/w/qemu/stefanha.git/shortlog/refs/heads/virtio-scsi
- Libvirt support
- Patches on mailing list
- http://www.redhat.com/archives/libvir-list/2012-January/msg00537.html
Future tasks
- Pick up vhost-scsi work again:
- Port QEMU hw/virtio-scsi.c vhost-scsi support onto latest code; add QEMU Object Model (QOM) support
- to the vhost-scsi device
- Port LIO vhost-scsi code onto latest lio.git code and spec
- Ensure vhost-scsi I/O still works
- Design libvirt integration for LIO
Features
- /dev/sda inside guest
- Multiple LUNs per PCI adapter, solves virtio-blk 1:1 scalability problem
- SCSI passthrough
Links
- KVM Forum 2011 presentation Virtio SCSI: An alternative virtualized storage stack for KVM
- Draft specification v3
- stefanha's vhost-scsi QEMU tree