Nicholas A. Bellinger, on 09/19/2009 02:07 AM wrote:
Greetings all,
This is the second round of request for comments for TCM/ConfigFS v3.2 from lio-core-2.6.git.
Thanks to the folks who made comments, and I again invite people to take a look and make
recommendations on how the code can be futher improved to use the best available upstream
interfaces.
Also, the standalone patches for TCM v3.2 are now available from:
http://kernel.org/pub/linux/kernel/people/nab/target_core_mod-patches/
The first posting from 09112009 can be found here:
http://marc.info/?l=linux-kernel&m=125272088024636
The changelog since the posting on 09112009, which can be found here:
*) Convert to struct mutex for struct sempahore initialized with init_MUTEX() (mentioned by Daniel Walker)
*) Convert to struct completion for struct semaphore initialized with init_MUTEX_LOCKED() (mentioned by Daniel Walker)
*) Convert to use Kbuild instead of Makefile for drivers/target/ (mentioned by Boaz Harrosh)
*) Use include/asm-generic/div64.h for unsigned long long division on 32-bit architectures
*) Use include/linux/math64.h for unsigned long long modulo on 32-bit architectures
The lio-core-2.6.git tree can be found here:
http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=summary
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://www.linux-iscsi.org/builds/docs/LIO-3.0-Users_Reference_Manual.pdf
http://www.linux-iscsi.org/index.php/Howto#Start_target_core_mod
Nicholas,
In the previous iteration of this patchset I asked you some essential
questions about what advantages TCM has over STGT which can't be
implemented in STGT and can justify the move from it to TCM, as well as
how did you test TCM to claim that TCM is generic and, hence, can work
with hardware target adapters (http://lkml.org/lkml/2009/9/15/315).
There was no reply answering those questions, instead you keep pushing
your patches. (In fact, I received privately even 2 very emotional and
offensive replies from Nicholas Bellinger.)
So, since there is no reply, I didn't miss anything and there are no
points to justify the move from STGT to TCM, and TCM is "generic" only
for software iSCSI targets.
For sake of completeness, I should also mention that the move from STGT
to TCM is not a move forward, it's a move backward, because TCM doesn't
allow creation of backend and target drivers in user space.
Hopefully, somebody more authoritative than I will ask you to stop
pushing your patches until you address the above questions.
Vlad
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