LSI SAS 3008 card - 35 out of 36 disks detected

[Stephen McConnell]

> -----Original Message-----
> From: owner-freebsd-scsi at freebsd.org [mailto:owner-freebsd-
> scsi at freebsd.org] On Behalf Of Graham Allan
> Sent: Friday, February 26, 2016 8:34 AM
> To: freebsd-scsi at freebsd.org
> Subject: Re: LSI SAS 3008 card - 35 out of 36 disks detected
> 
> 
> 
> On 2/26/2016 9:26 AM, kpneal at pobox.com wrote:
> > On Fri, Feb 26, 2016 at 05:44:07AM -0700, crigariba wrote:
> >> We have a Supermicro chassis with a LSI 3008 HBA card. Installed
> >> FreeNas 9.3-RELEASE, but realized there were only 35 disks visible to
> >> the OS. The missing disk is in bay 24 (starting at 0 - 1st disk on rear
> backplane).
> >>
> >> Both in the card bios and booting a live gnu/linux shows all 36 disks
> >> and said disk is functional.

This problem has to do with how the enclosure reports its slots to the HBA's
Firmware. It sounds like you've researched it, so you probably know that.
If it's possible for you to move your HBA to a Windows or Linux system, or
if you can boot up in UEFI, I can give you access to a tool that will allow
you to change the mapping mode on your HBA.  There is a FreeBSD version, but
it's not yet in a licensable form, and you will need to sign an EULA to use
the tool.  Let me know and I can send you a link and instructions.

> >
> > Best practice for ZFS is to have different system and data pools. Your
> > system pool will have a small number of disks compared to your data
> > pools, and that tends to avoid issues like this one. There are other
> > benefits as well.
> 
> Maybe in this case FreeNAS is just on flash, that seems the normal way to
> install it.
> 
> You said sas2ircu saw no adapters, but I think you probably need to use
> sas3ircu for this model of HBA.
> 
> Another quick test I suppose might be to boot with current NAS4Free -
> whether you want to use that or not, it's based on FreeBSD 10.2 so you
might
> see some different behaviour. Though a FreeBSD 10.2 livecd/liveusb would
> achieve the same thing.
> 
> Graham
> --
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