On Nov 22, 2007, at 12:03 PM, Selim Daoud wrote:
> sumit,
>
> thanks for the update
> we ready to give it a try, but our test environement has only emlx HBA
> or qlc 2340
> so I will have to wait a bit...when do you think you'll release a
> emlx version?
Emulex has been working on a COMSTAR driver for some time now. I
expect the work to be done before the end of this quarter but cannot
say that for sure. I know they have most of the functionality working
already.
>
> one think I've noticed: to change a HBA port between initiator and
> target, a reboot is necessary
> is there any work been done to avoid a reboot? (the same way
> Falconstor's ipstor does?)
For now it is not possible but that might change in future. The
qlogic target mode driver is different from qlogic initiator mode
driver. Switching drivers without a reboot doesn't always work well.
The best way to do this is to use the same driver for both initiator
and target mode. That is a possibility (and I dont know how Emulex is
going to layout their drivers) but nothing is being done in that
direction for now.
>
> I suppose it's too early for any published benchmark?
We need to do formal benchmarks in near future. I did some basic
performance testing a while ago but the code has changed somewhat
since then. On a thumper I was able to get line rate (407 MB/sec) on
the READ side with 1 LUN to 128 LUNs (raidz zvols) with only 32K
blocksize and less than 20% CPU utilization. On WRITE side the HBA
would give 360 MB/sec to a regular file on the root disk but with
zvols it was not constant. Also the CPU utilization would vary
significantly. Hopefully we will have formal results next quarter.
Sumit
>
> selim
>
> On Nov 22, 2007 8:42 PM, Sumit Gupta <[EMAIL PROTECTED]> wrote:
>>
>> The release notes section lists the initial feature set we are
>> working on in the short term. We will definitely be adding more port
>> providers like iSCSI and SAS. There are a few groups in the company
>> who are looking into adding their own LU providers but I dont have
>> details around when they will be done or release their source.
>>
>> Is there anything you find missing or would like to see, please let
>> us know.
>>
>> Thanks
>> Sumit
>>
>>
>> On Nov 22, 2007, at 9:38 AM, Selim Daoud wrote:
>>
>>> this project is really exciting...it's only the begining thought
>>> Is it there a roadmap somewhere or a list of features being
>>> introduced
>>> into Comstar?
>>>
>>> thanks
>>>
>>> selim
>>>
>>> --
>>> ------------------------------------------------------
>>> Blog: http://fakoli.blogspot.com/
>>> _______________________________________________
>>> storage-discuss mailing list
>>> [email protected]
>>> http://mail.opensolaris.org/mailman/listinfo/storage-discuss
>>
>> _______________________________________________
>> storage-discuss mailing list
>> [email protected]
>> http://mail.opensolaris.org/mailman/listinfo/storage-discuss
>>
>
>
>
> --
> ------------------------------------------------------
> Blog: http://fakoli.blogspot.com/
_______________________________________________
storage-discuss mailing list
[email protected]
http://mail.opensolaris.org/mailman/listinfo/storage-discuss
