PowerEdge 1850, PERC 4e/Si not visible in OMSA

Thu Jun 4 04:40:18 CDT 2009

It works on 2.6.24.7 (last versión 2.6.24) and it doesn’t work on 2.6.25.1
(first versión 2.6.25)

The Changelog of 2.6.25 

“

    [SCSI] MegaRAID driver management char device moved to misc

    The MegaRAID driver's common management module (megaraid_mm.c) creates a

    char device used by the management tool "megarc" from LSI Logic (and

    possibly other management tools).

    In 2.6 with udev, this device doesn't get created because it is not

    registered in sysfs.

    I first fixed this by registering a class "megaraid_mm", but realized
that

    this should probably be moved to misc devices, instead of taking up a
char

    major.  This is because only 1 device is used, even if there are
multiple

    adapters - the minor is never used (the adapter info is in the ioctl
block

    sent to the driver, not detected based on the minor number as one might

    think).  So it is a complete waste to have an entire major taken by
this.

    So it now uses a misc device which I named "megadev0" (the name that
megarc

    expects), and has a dynamic minor (previoulsy a dynamic major was used).

    I have tested this on my own system with the megarc tool, and it works
just

    as fine as before (only now the device gets created correctly by udev).”

Any solution, any idea?

Thanks

De: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] En nombre de Johan Sjöberg
Enviado el: lunes, 11 de mayo de 2009 13:16
Para: Linux-PowerEdge at dell.com
Asunto: RE: PowerEdge 1850, PERC 4e/Si not visible in OMSA

It works on 2.6.24 (Debian etchnhalf, Ubuntu 8.04), so it seems the problem
appeared sometime between 2.6.24 and 2.6.26.

/Johan

From: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] On Behalf Of Johan Sjöberg
Sent: den 29 april 2009 10:57
To: Linux-PowerEdge at dell.com
Subject: RE: PowerEdge 1850, PERC 4e/Si not visible in OMSA

I had the same problem with Debian Lenny, and Ubuntu 8.10, and did some more
testing.

It seems to be related to kernel version. OMSA does not detect the PERC4 on
Fedora 10 (2.6.27) either. Maybe Dell will fix it now that SLES 11 (2.6.27)
is out? Or is it maybe a problem with the kernel, that makes it impossible?

/Johan

From: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] On Behalf Of Francisco Javier
Romero Muñoz
Sent: den 29 april 2009 10:33
To: Linux-PowerEdge at dell.com
Subject: RE: PowerEdge 1850, PERC 4e/Si not visible in OMSA

Hi

The problem is the kernel and Lenny

I have the same hardware and with 2.6.18-6-686 debian standard kernel, it
works OMSA 5.5

The same hardware and software, with 2.6.26-2-686 kernel it doesn’t work

Any idea?

Any solution?

Thanks

De: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] En nombre de Dean Manners
Enviado el: miércoles, 29 de abril de 2009 10:14
Para: Linux-PowerEdge at dell.com
Asunto: PowerEdge 1850, PERC 4e/Si not visible in OMSA

Hey guys, wondering if anyone has come across this one.

Recycling a retired-from-service PE1850 with a PERC4 4e/Si scsi RAID card.
The raid is all good, operating system (Debian) is running fine, and
otherwise everythings koshure.  However OMSA does not recognize that there
is a PERC card in the chassis, so we are unable to monitor storage/RAID.

----

# omreport storage controller

No controllers found

----

Logging in via the LSI/RAID utility at boot, everything looks normal even
performed a drive rebuild to really test things.  But alas, OMSA doesn’t see
the controller.

System is running: 

- Debian 5.0 (Lenny)

- 2.6.26-2 kernel

- OMSA 5.5.0 (a sara.nl build)

- Latest Dell supplied firmware for the PERC 4e/Si card (5B2D, A19)

Whats confusing about this, is that Im quite sure this machine (running an
older Debian, an older PERC firmware, and older OMSA) did used to operate
fine with OMSA/storage.  All I can think on trying is going back to an older
PERC firmware to see if theres something in that (not that I would want to
run the older firmware long term).

Any ideas ?

Regards
__________________________________________ 
Dean Manners

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