[openfabrics-ewg] open-iscsi update for OFED 1.2

[Erez Zilber]

Michael S. Tsirkin wrote:
>> Quoting r. Erez Zilber <erezz at voltaire.com>:
>> Subject: Re: open-iscsi update for OFED 1.2
>>
>> Michael S. Tsirkin wrote:
>>     
>>>>>> Quoting r. Erez Zilber <erezz at voltaire.com>:
>>>>>>         
>>>>>>             
>>>> We propose the following solution:
>>>>
>>>>     * open-iscsi + iSER will be installed by default.
>>>>     * if open-iscsi (userspace code) with version < our open-iscsi
>>>>       version is installed, the installation will fail and the user will
>>>>       be prompted. The user can decide not to install iSER or uninstall
>>>>       his old open-iscsi package. Then, he can rerun the installation.
>>>>     
>>>>         
>>> Can open-iscsi be installed as out of kernel module?
>>> Patching kernel sources as part of OFED install is really painful.
>>>
>>>   
>>>       
>> Yes. We already have RPMs that do that. We compile open-iscsi out of
>> tree. Our only problem is that because it uses header files from
>> /usr/src/linux/include/scsi/, we need to replace the old h files with
>> the new h files for the compilation time (and then restore the old
>> files). I guess that there might be a better way to do that (without
>> having to replace the h files in the kernel tree). Do you know how?
>>     
>
> Sure. Ofed backports do this all the time.
> You just add your own directory first under LINUXINCLUDE=.
>   
Thanks for the tip. I will use that and it can simplify my work.
> More than this - since ofed really starts from kernel.org kernel,
> just give us the list of files and ofed scripts will check that
> out and build. You'll have to backport open-iscsi to distro kernels though.
>
>   
Which kernel version is OFED 1.2 going to be based on? If I understand
correctly, you'll take open-iscsi files from that kernel version and
we'll need to supply patches to backport this version to fit the distro
kernels. Right?
>> We plan to install 3 packages:
>>
>>    1. open-iscsi - similar to the current open-iscsi package (contains
>>       config files and userspace programs).
>>    2. open-iscsi-kernel - kernel modules
>>    3. open-iscsi-devel - h files. We install it only if the kernel
>>       source code exists. This is necessary if you want to develop for
>>       open-iscsi.
>>     
>
> So I think what you'll want is really just an extra open-iscsi package,
> and kernel and devel will be part of the ofed kernel package.
>   
Yes.