Re: [RFC 0/2] target: userspace pass-through backend
On Tue, Jul 1, 2014 at 9:11 PM, Andy Grover agro...@redhat.com wrote: Shaohua Li wrote an initial implementation of this, late last year[1]. Starting from that, I started working on some alternate implementation choices, and ended up with something rather different. Please take a look and let me know what you think. Patch 1 is a design and overview doc, and patch 2 is the actual code, along with implementation rationale. Thanks -- Andy [1] http://thread.gmane.org/gmane.linux.scsi.target.devel/5044 Andy Grover (2): target: Add documentation on the target userspace pass-through driver target: Add a user-passthrough backstore Documentation/target/tcmu-design.txt | 210 +++ drivers/target/Kconfig |5 + drivers/target/Makefile|1 + drivers/target/target_core_transport.c |4 + drivers/target/target_core_user.c | 1078 drivers/target/target_core_user.h | 126 6 files changed, 1424 insertions(+) create mode 100644 Documentation/target/tcmu-design.txt create mode 100644 drivers/target/target_core_user.c create mode 100644 drivers/target/target_core_user.h Hi Andy, Just wanted to let you know that a userspace backstore would potentially be useful for QEMU. QEMU supports a number of disk image formats (VMDK, VHDX, qcow2, and more). Make these available as SCSI LUNs on the host or to remote SCSI initiators is cool. We currently have a tool called qemu-nbd that exports disk images using the Network Block Device protocol. Your userspace backstore provides other options like iSCSI target or loopback access on the host. I took a quick look at the patch and imagine it's not hard to hook up to QEMU. Looks promising! Stefan -- To unsubscribe from this list: send the line unsubscribe linux-scsi in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [RFC 0/2] target: userspace pass-through backend
Hi, here's some additional beginning bits for the configuration and use of this code: Changes to targetcli-fb and rtslib-fb: https://github.com/agrover/targetcli-fb/tree/userback https://github.com/agrover/rtslib-fb/tree/userback An incredibly-crappy stand-in for the user process that will handle requests: https://github.com/agrover/test-userback I look forward to your feedback :) Thanks -- Regards -- Andy p.s. kernel changes are also available here: https://github.com/agrover/linux/tree/userback -- To unsubscribe from this list: send the line unsubscribe linux-scsi in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[RFC 0/2] target: userspace pass-through backend
Shaohua Li wrote an initial implementation of this, late last year[1]. Starting from that, I started working on some alternate implementation choices, and ended up with something rather different. Please take a look and let me know what you think. Patch 1 is a design and overview doc, and patch 2 is the actual code, along with implementation rationale. Thanks -- Andy [1] http://thread.gmane.org/gmane.linux.scsi.target.devel/5044 Andy Grover (2): target: Add documentation on the target userspace pass-through driver target: Add a user-passthrough backstore Documentation/target/tcmu-design.txt | 210 +++ drivers/target/Kconfig |5 + drivers/target/Makefile|1 + drivers/target/target_core_transport.c |4 + drivers/target/target_core_user.c | 1078 drivers/target/target_core_user.h | 126 6 files changed, 1424 insertions(+) create mode 100644 Documentation/target/tcmu-design.txt create mode 100644 drivers/target/target_core_user.c create mode 100644 drivers/target/target_core_user.h -- 1.9.3 -- To unsubscribe from this list: send the line unsubscribe linux-scsi in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
