topic Re: Emulex LP10000 on Linux not detecting Multiple Luns.. in Operating System - Linux

Emulex LP10000 on Linux not detecting Multiple Luns..

Nagaraj_9 — Thu, 09 Dec 2004 01:04:22 GMT

hi All,
i am trying to use Emulex LP10000 card as a client. i have downloaded
driver from net and inserted. i have made LUN0_MISSING as true and
also set the grub to scan multiple LUNs. but, even after building the
system with all these changes, i am not entries displayed in
/proc/scsi/scsi for all the LUNs. please suggest me something, as are
there any other changes to be made in conf file and so..

thanks in advance,
Nagaraj

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Slawomir Gora — Thu, 09 Dec 2004 04:54:35 GMT

Hi,

do you have in you kernel "Probe all LunS on each SCSI device" set to yes ?

to check run:
cat /boot/config | grep CONFIG_SCSI_MULTI_LUN

if no you have to compile your kernel.

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Nagaraj_9 — Thu, 09 Dec 2004 05:58:52 GMT

hi Slawomir,
thanks 4 reply. but, I have changed the config file to detect multiple LUNs and have rebuilt the kernel. i have made change in grub/lilo also. but even after these changes, i am not getting multiple entries in /proc/scsi/scsi/. i have 4 virtula deveices on target machine.
thanks,

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

xyko_1 — Thu, 09 Dec 2004 06:08:38 GMT

Hi Nagaraj,

when you set "Probe All Luns ..." I think you have to set also SCSI Support and SCSI disk support as static.

Did you ?

regards,
Xyko

Ps.: My coment is about 2.4.x series kernels.

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Nagaraj_9 — Thu, 09 Dec 2004 06:16:02 GMT

Hi Xyko,
thanks. by default these parameters will be set to moduler and i have used same thing.

I am having kernel configured to SCSI support n SCSI disk support as moduler.

thanks,

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

xyko_1 — Thu, 09 Dec 2004 06:40:14 GMT

Hi Nagaraj,

I have emulex lp9000 not 10000 connecting to a SAN (switch mac data with EMC cx600) and I have to configure "persistent binding" on emulex module.

To set persistent binding I have to edit and compile lpfc.conf.c, for the following parameters: lpfc_bind_entries, lpfc_automap, lpfc_scandown and a line for each zooning. You may find instructions as comments on the module itself.

I don't know if it is your case but ....

Hope it helps.
Xyko

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Chris Xu — Thu, 09 Dec 2004 09:27:49 GMT

Take a look at your /etc/modules.conf and see if you have similar entries like below:

alias eth0 e100
alias eth1 e100
alias eth2 e100
alias scsi_hostadapter1 megaraid
alias scsi_hostadapter2 lpfcdd
options scsi_mod max_scsi_luns=256 scsi_allow_ghost_devices=1

And here is a good doc on this.
http://www.emulex.com/ts/docoem/emc/pdfs/linux.pdf

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Nagaraj_9 — Thu, 09 Dec 2004 09:36:12 GMT

hi Chris,
i am trying with the changes Xyko had mentioned. and in my /etc/modules.conf, i have only one entry for hostadapter as lpfc. other eth0 are ok.

thanks for the doc, i will go through and try out other changes and let you people the results.
thanks again..

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Chris Xu — Thu, 09 Dec 2004 10:04:31 GMT

It is good that you are trying the method Xyko suggested. However, there is one point worth mentioning here. To change parameters in the lpfc.c and re-compile the driver is one way to fix the problem. However, the same parameters are available for modifications in the modules.conf and you don't need to re-compile anything. I would highly recommend you to go through the related chapter in the doc first.

For example, these are the some parameters in the modules.conf:
options lpfcdd lpfc_lun_skip=1 lpfc_network_on=0 lpfc_topology=0x02 lpfc_use_data_direction=0 lpfc_bind_entries=1 lpfc_scandown=0 lpfc_automap=0 lpfc_fcp_bind_WWPN=50060482bcc335dd:lpfc0t0 lpfc_log_verbose=0x1fff

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

xyko_1 — Thu, 09 Dec 2004 10:43:15 GMT

Hi Nagaraj and Chris,

I did not find the documentation Chris mentioned ( http://www.emulex.com/ts/docoem/emc/pdfs/linux.pdf ) but I found others at http://www.emulex.com/ts/docfc/frame10000.htm

If my help does not solve your problem Nagaraj, try to find better instructions on these documents. There are a Troubleshooting one that seems to be very useful.

regards,
xyko

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Chris Xu — Thu, 09 Dec 2004 10:54:21 GMT

Hi, xyko

I checked the link again, and it worked. I got the pdf file.

Chris

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Nagaraj_9 — Fri, 10 Dec 2004 05:15:13 GMT

Hi Xyko n Chris,
i went through the doc (i got PDF). i nade the required changes for persistent binding, but i didnt get what i need to do with lpfc_fcp_bind_WWPN[]!! is it that i need to bind it with all the WWPN i have and after this, it will recognise only those many LUNS(lpfc_bind_entries got to this with this i suppose). is it right?? let me know..

thanks for kind co-operation..
Nagaraj

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

xyko_1 — Fri, 10 Dec 2004 05:59:53 GMT

Hi Nagaraj & Hi Chris,

I got access to Chris doc too, pehaps I have had browser problems for the first time I tried.

I have worked (my team, not me) with emulex a long time ago and now I see that the installation process is better and that thera are a lot of configuration software to do the job.

Nagaraj, did you read all the installation manual and followed all the instructions ? Did you read the configuration one and did all the configurations steps ?

I'm sory but I can't help you more because my knows ended here.

I stongly suggest that you beging the process again following all the instructions of the installation/configuration manual using the newest driver possible (7.1).

Hope you solve your problems.

Regards,
Xyko

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Nagaraj_9 — Fri, 10 Dec 2004 06:15:41 GMT

hi Xyko,
thanks a lot for ur time. i have followed all the steps tht were there in the doc, but if u insist i will try that again next weekdays nad will let u know the results for sure.

Re: Emulex LP10000 on Linux not detecting Multiple Luns..

Chris Xu — Fri, 10 Dec 2004 09:44:49 GMT

At this point, I feel you should talk to your SAN admin if you are not the one taking care of the SAN that your system is connected to. I think you should make sure the LUN's are indeed presented to your system in the SAN config. I had a similar case in the past. My Linux system had one fibre connection to one of two fabrics, but the 4 LUN's were evenly presented in the two fabrics via zoning. My system could only see 2 LUN's, of course, until I figured it out.

Chris