* Linux limitation of amount of SCSI buses
@ 2003-07-29 12:58 Rabeeh Khoury
2003-07-29 15:58 ` Mike Anderson
0 siblings, 1 reply; 3+ messages in thread
From: Rabeeh Khoury @ 2003-07-29 12:58 UTC (permalink / raw)
To: linux-scsi
Hi All,
I'm connecting few cards with 24 buses and Linux gives me only 15 buses.
Is there any limitation in Linux SCSI subsystem within kernel 2.4.x of
the number of SCSI buses ?
Each bus has a single target and a single LUN.
Regards,
Rabeeh
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Linux limitation of amount of SCSI buses
2003-07-29 12:58 Linux limitation of amount of SCSI buses Rabeeh Khoury
@ 2003-07-29 15:58 ` Mike Anderson
2003-07-29 17:34 ` Rabeeh Khoury
0 siblings, 1 reply; 3+ messages in thread
From: Mike Anderson @ 2003-07-29 15:58 UTC (permalink / raw)
To: Rabeeh Khoury; +Cc: linux-scsi
Rabeeh Khoury [rabeeh@il.marvell.com] wrote:
> Hi All,
>
> I'm connecting few cards with 24 buses and Linux gives me only 15 buses.
> Is there any limitation in Linux SCSI subsystem within kernel 2.4.x of
> the number of SCSI buses ?
> Each bus has a single target and a single LUN.
Does each card have multiple channels (i.e., 24)? If so you may need to
set max_channel to a higher value.
If each card has a single bus there may be a instance limit that the
driver you are using will support.
What driver are you using?
-andmike
--
Michael Anderson
andmike@us.ibm.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Linux limitation of amount of SCSI buses
2003-07-29 15:58 ` Mike Anderson
@ 2003-07-29 17:34 ` Rabeeh Khoury
0 siblings, 0 replies; 3+ messages in thread
From: Rabeeh Khoury @ 2003-07-29 17:34 UTC (permalink / raw)
To: Mike Anderson; +Cc: linux-scsi
>
>
>>I'm connecting few cards with 24 buses and Linux gives me only 15 buses.
>>Is there any limitation in Linux SCSI subsystem within kernel 2.4.x of
>>the number of SCSI buses ?
>>Each bus has a single target and a single LUN.
>>
>>
>
>Does each card have multiple channels (i.e., 24)? If so you may need to
>set max_channel to a higher value.
>
Each card has 8 buses ; total 3 cards. On each bus I have a single
target that has single LUN.
If I work with a single adapter I can see 8 buses.
>
>If each card has a single bus there may be a instance limit that the
>driver you are using will support.
>
>What driver are you using?
>
Internal driver that is under development.
>
>-andmike
>--
>Michael Anderson
>andmike@us.ibm.com
>
>
>.
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2003-07-29 12:58 Linux limitation of amount of SCSI buses Rabeeh Khoury
2003-07-29 15:58 ` Mike Anderson
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