[gentoo-user] IDE/USB problem : not both disks recognized on same IDE channel

[gentoo-user] IDE/USB problem : not both disks recognized on same IDE channel

[Rohit]

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Hi there,

I rejoin the list after 5-6 years. Was able to fix most of the things myself
but this one has me totally bowled over.

I have an IDE disk enclosure (can house 2 disks per IDE channel, a total of
4 currently plugged in) which makes IDE disks available to the main computer
via 2x USB 2.0 connection (One USB 2.0 port connected to IDE adapter).
The problem I have is that the computer is able to see only 1 IDE disk per
channel. At a time, as a result, my server can only see 2 disks instead of 4
connected, one disk per channel only.

I have tried all possible combinations of jumpers (master/slave,
cable-select, force-slave-present) for each pair.

Interestingly - Windows XP / YetAnotherReiserFS GUI is able to see/read all
4 (2 pairs) disks so I think it is something that needs fixing in Linux
kernel/drivers and the enclosure box is not the source of problem.
I confirm individual disks are fine as well.
I am currently running Linux 2.6.27-gentoo-r8.

Has anyone else encountered this problem before ? /proc/config.gz is also
attached.

Thanks in advance,
Rohit

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Re: [gentoo-user] IDE/USB problem : not both disks recognized on same IDE channel

[Volker Armin Hemmann]

On Samstag 05 September 2009, Rohit wrote:
> Hi there,
> 
> I rejoin the list after 5-6 years. Was able to fix most of the things
>  myself but this one has me totally bowled over.
> 
> I have an IDE disk enclosure (can house 2 disks per IDE channel, a total of
> 4 currently plugged in) which makes IDE disks available to the main
>  computer via 2x USB 2.0 connection (One USB 2.0 port connected to IDE
>  adapter). The problem I have is that the computer is able to see only 1
>  IDE disk per channel. At a time, as a result, my server can only see 2
>  disks instead of 4 connected, one disk per channel only.
> 
> I have tried all possible combinations of jumpers (master/slave,
> cable-select, force-slave-present) for each pair.
> 
> Interestingly - Windows XP / YetAnotherReiserFS GUI is able to see/read all
> 4 (2 pairs) disks so I think it is something that needs fixing in Linux
> kernel/drivers and the enclosure box is not the source of problem.
> I confirm individual disks are fine as well.
> I am currently running Linux 2.6.27-gentoo-r8.
> 
> Has anyone else encountered this problem before ? /proc/config.gz is also
> attached.
> 
> Thanks in advance,
> Rohit
> 

# CONFIG_SCSI_MULTI_LUN is not set

enable that.

Re: [gentoo-user] IDE/USB problem : not both disks recognized on same IDE channel

[Willie Wong]

On Sat, Sep 05, 2009 at 10:46:00AM +0100, Penguin Lover Rohit squawked:
> I have an IDE disk enclosure (can house 2 disks per IDE channel, a total of
> 4 currently plugged in) which makes IDE disks available to the main computer
> via 2x USB 2.0 connection (One USB 2.0 port connected to IDE adapter).
> The problem I have is that the computer is able to see only 1 IDE disk per
> channel. At a time, as a result, my server can only see 2 disks instead of 4
> connected, one disk per channel only.
> 

Not an IDE problem. A SCSI problem. Those USB enclosures makes it so. 

In menuconfigs, go to 

Device Drivers -> SCSI device Support

and check Probe all LUNs on each SCSI device.

W
-- 
Q: What's yellow and depends on the Axiom of Choice? 
A: Zorn's Lemmon
Sortir en Pantoufles: up 1002 days, 12:33

[gentoo-user] Re: IDE/USB problem : not both disks recognized on same IDE channel

[Rohit]

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To Volkerarmin and Wwong,

Thanks for your inputs - both of you. I will try these both right away and
let you know.

Best regards,
Rohit

2009/9/5 Rohit <rohit.sharma@iitbombay.org>

> Hi there,
>
> I rejoin the list after 5-6 years. Was able to fix most of the things
> myself but this one has me totally bowled over.
>
> I have an IDE disk enclosure (can house 2 disks per IDE channel, a total of
> 4 currently plugged in) which makes IDE disks available to the main computer
> via 2x USB 2.0 connection (One USB 2.0 port connected to IDE adapter).
> The problem I have is that the computer is able to see only 1 IDE disk per
> channel. At a time, as a result, my server can only see 2 disks instead of 4
> connected, one disk per channel only.
>
> I have tried all possible combinations of jumpers (master/slave,
> cable-select, force-slave-present) for each pair.
>
> Interestingly - Windows XP / YetAnotherReiserFS GUI is able to see/read all
> 4 (2 pairs) disks so I think it is something that needs fixing in Linux
> kernel/drivers and the enclosure box is not the source of problem.
> I confirm individual disks are fine as well.
> I am currently running Linux 2.6.27-gentoo-r8.
>
> Has anyone else encountered this problem before ? /proc/config.gz is also
> attached.
>
> Thanks in advance,
> Rohit
>



-- 
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http://anglianphotos.com

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[gentoo-user] Re: IDE/USB problem : not both disks recognized on same IDE channel

[Rohit]

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The results are encouraging !
I am able to see both disks on at least 1 IDE channel, so we have surely
fixed the problem with the kernel.
Will check cabling etc for the other IDE channel.

Thanks very much !
Rohit

2009/9/6 Rohit <rohit.sharma@iitbombay.org>

> To Volkerarmin and Wwong,
>
> Thanks for your inputs - both of you. I will try these both right away and
> let you know.
>
> Best regards,
> Rohit
>
> 2009/9/5 Rohit <rohit.sharma@iitbombay.org>
>
> Hi there,
>>
>> I rejoin the list after 5-6 years. Was able to fix most of the things
>> myself but this one has me totally bowled over.
>>
>> I have an IDE disk enclosure (can house 2 disks per IDE channel, a total
>> of 4 currently plugged in) which makes IDE disks available to the main
>> computer via 2x USB 2.0 connection (One USB 2.0 port connected to IDE
>> adapter).
>> The problem I have is that the computer is able to see only 1 IDE disk per
>> channel. At a time, as a result, my server can only see 2 disks instead of 4
>> connected, one disk per channel only.
>>
>> I have tried all possible combinations of jumpers (master/slave,
>> cable-select, force-slave-present) for each pair.
>>
>> Interestingly - Windows XP / YetAnotherReiserFS GUI is able to see/read
>> all 4 (2 pairs) disks so I think it is something that needs fixing in Linux
>> kernel/drivers and the enclosure box is not the source of problem.
>> I confirm individual disks are fine as well.
>> I am currently running Linux 2.6.27-gentoo-r8.
>>
>> Has anyone else encountered this problem before ? /proc/config.gz is also
>> attached.
>>
>> Thanks in advance,
>> Rohit
>>
>
>
>

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