On Mon, 2009-09-14 at 13:12 -0700, Chetan.Loke@xxxxxxxxxx wrote: > > -----Original Message----- > > From: linux-kernel-owner@xxxxxxxxxxxxxxx [mailto:linux-kernel- > > owner@xxxxxxxxxxxxxxx] On Behalf Of Nicholas A. Bellinger > > Sent: Friday, September 11, 2009 9:55 PM > > To: LKML; linux-scsi > > Cc: Andrew Morton; Greg KH; Douglas Gilbert; James Bottomley; Hannes > > Reinecke; FUJITA Tomonori; Mike Christie; Joel Becker; Martin K. Petersen; > > Christoph Hellwig; Linus Torvalds; Alan Stern; Boaz Harrosh; Florian Haas; > > Philipp Reisner > > Subject: [RFC PATCH 0/19] A kernel-level configfs enabled generic target > > engine for Linux v2.6.32 > > > > Greetings all, > > > > This is my humble request for review and inclusion of > > Target_Core_Mod/ConfigFS v3.2 from lio-core-2.6.git code into mainline > > v2.6.32. With TCM v3.2, the two major SPC-4 SCSI target mode fabric > > features that have now been completed: Persistent Reservation APTPL and > > implict/explict ALUA are the first all optional SPC4 defined feature > > implementation of PR and ALUA in the Linux OSS target theatre using an > > upstream user-driven virtual filesystem directory hierarchy structure > > based on configfs that can be configured in realtime in combination with > > interpreted userspace code. > > > > Both of these new features are now being used to provide Persistent > > Reservations > > across target power loss and asymmetric multipath I/O to both Linux and > > non-Linux > > clients. There is also an optional ALUA transition delay logic that has > > been > > included to futher debug and improve existing upstream client side Linux > > kernel code > > using TCM v3.2. These patches have been diffed against v2.6.31, and tested > > on x86 > > 32-bit HVM, x86_64 KVM, and powerpc. > > > > There is cleanup work continuing to make the TCM code to use dprintk(), > > and some include cleanups, and other minor fixes. The code has also > > been run through checkpatch again since the posting in April, and all > > errors have been removed, with the exception of one ConfigFS macro > > define triggering a checkpatch false positive. > > > > As with the posting of the TCM v3.0 code earlier in April, I have > > decided to break up the submissions into the generic target_core_mod > > piece (this patch series) and then a seperate one that will be appearing > > in the next days for v3.2 of the LIO-Target iSCSI fabric module. > > > > More Information about Target_Core_Mod/ConfigFS, and PR and ALUA: > > > > http://www.linux-iscsi.org/index.php/Target_Core_Mod/ConfigFS > > http://www.linux-iscsi.org/index.php/Persistent_Reservations > > http://www.linux-iscsi.org/index.php/ALUA > > > > The complete v3.x TCM CLI operations set can be found here: > > > > http://www.linux-iscsi.org/index.php/Lio-utils#v3.1_TCM_CLI_operations > > > > Instructions and examples for getting setup: > > > > http://linux-iscsi.org/builds/docs/LIO-3.0-Users_Reference_Manual.pdf > > http://www.linux-iscsi.org/index.php/Howto#Start_target_core_mod > > > > Constructive comments are welcome, > > > > --nab > > > > > > Any pointers/URLs for the design/arch doc? Greetings Chetan, There are various bits and pieces detailing the TCM design on the linux-iscsi.org wiki, but no definitive design document (aside from the comments in the code) is available yet. I will however be putting together a first draft for this (along with the user-level stuff) for Documentation/ soon. Until then, I would be happy to answer any questions you may have. --nab > > > Chetan -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
