howto configuring kernel and modules.conf for automatic loading of ide-scsi

howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Agri]

i'm  confused with module loading.

i have cdrw and configure ide-scsi emulation for it.
doing "modprobe ide-scsi; mount /dev/scd0" is fine.

but, how to configure automatic loading of ide-scsi?
it seems that just "touching" for /dev/scd0 do not
cause kmod to exec modprobe at all. What to do?
i think that loading several modules at boottime are not the best idea,
in that case - why do i use modules at all?

Agri

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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[X-Penguin]

Agri пишет:
> i'm  confused with module loading.
> 
> i have cdrw and configure ide-scsi emulation for it.
> doing "modprobe ide-scsi; mount /dev/scd0" is fine.
> 
> but, how to configure automatic loading of ide-scsi?
> it seems that just "touching" for /dev/scd0 do not
> cause kmod to exec modprobe at all. What to do?
> i think that loading several modules at boottime are not the best idea,
> in that case - why do i use modules at all?
> 
> Agri
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
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> 

You need to change /etc/rc.d/rc.sysinit
---------------------------
# Begin of /etc/rc.d/rc.sysinit
.....
modprobe ide-scsi
# End of /etc/rc.d/rc.sysinit
---------------------------
for load only this module or enable autoloading by kernel

Loadable module support  --->  [*]   Automatic kernel module loading

p.s.
sorry, my english is not good :(

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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Ray Olszewski]

At 04:11 AM 1/25/2004 +0300, Agri wrote:
>i'm  confused with module loading.
>
>i have cdrw and configure ide-scsi emulation for it.
>doing "modprobe ide-scsi; mount /dev/scd0" is fine.
>
>but, how to configure automatic loading of ide-scsi?
>it seems that just "touching" for /dev/scd0 do not
>cause kmod to exec modprobe at all. What to do?

You load them as part of the boot/init process. Exactly how you do that 
depends quite a bit on which Linux distrobution you are using. The advice 
someone else posted, for example, looked like it was for Slackware. In 
Debian, you'd add the module names to /etc/modules . Probably the 
assortment of distros descended from Red Hat has yet another procedure for 
this.

>i think that loading several modules at boottime are not the best idea,
>in that case - why do i use modules at all?

There are many reasons to use modules. The specific reasons depend on the 
specific modules in question. In this instance, though, you should feel 
free to recompile your kernel to incorporate ide-scsi support (of course, 
also compiling in the other modules that ide-scsi needs in order to function).

You are entitled to your opinion ... it is your system after all ... but 
personally I think it is smart to load during init, or compile in, support 
for devices that hold filesystems.





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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[pa3gcu]

On Sunday 25 January 2004 02:11, Agri wrote:
> i'm  confused with module loading.

Understandable.

> i have cdrw and configure ide-scsi emulation for it.
> doing "modprobe ide-scsi; mount /dev/scd0" is fine.
>
> but, how to configure automatic loading of ide-scsi?
> it seems that just "touching" for /dev/scd0 do not
> cause kmod to exec modprobe at all. What to do?

You make no mention of what distro you are using let alone which kernel 
version so that in itsself makes giving a direct answer very hard, i can 
point you to a direction which should automate loading of modules on all 
linux systems tho'.

Backup your /etc/modules.conf file before doing the following.

/sbin/modprobe -c >/etc/modules.conf

That will create entries which will help modpobe load modules upon demand.

> i think that loading several modules at boottime are not the best idea,
> in that case - why do i use modules at all?

Some modules need to be loaded at bootime some not.

The main reason why one has a modular kernel is because of kernel size and 
memory usage, just imagen how large a kernel would be with everything one 
needs compiled into the kernel
Another thing is drivers that have "options" like IRQ I/O adresses, just 
imagen having all that compiled into a kernel and you have an old network 
card which is set to IRQ5 and your kernel has been compiled to look for that 
card on IRQ3, as you see not so handy...

BTW, if you have a slackware system the answer from Mr. X-Penguin is 
incorrect, that should answer Rays comment on slackware as well.

>
> Agri

-- 
If the Linux community is a bunch of theives because they
try to imitate windows programs, then the Windows community
is built on organized crime.

Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/



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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Agri]

thanks for answers, but....
the only thing i get: there is no way to configure loading of ide-scsi "ON DEMAND".
Am i right?

Agri

On Sat, 24 Jan 2004 20:31:06 -0800
Ray Olszewski <ray@comarre.com> wrote:

> At 04:11 AM 1/25/2004 +0300, Agri wrote:
> >i'm  confused with module loading.
> >
> >i have cdrw and configure ide-scsi emulation for it.
> >doing "modprobe ide-scsi; mount /dev/scd0" is fine.
> >
> >but, how to configure automatic loading of ide-scsi?
> >it seems that just "touching" for /dev/scd0 do not
> >cause kmod to exec modprobe at all. What to do?
> 
> You load them as part of the boot/init process. Exactly how you do that 
> depends quite a bit on which Linux distrobution you are using. The advice 
> someone else posted, for example, looked like it was for Slackware. In 
> Debian, you'd add the module names to /etc/modules . Probably the 
> assortment of distros descended from Red Hat has yet another procedure for 
> this.
> 
> >i think that loading several modules at boottime are not the best idea,
> >in that case - why do i use modules at all?
> 
> There are many reasons to use modules. The specific reasons depend on the 
> specific modules in question. In this instance, though, you should feel 
> free to recompile your kernel to incorporate ide-scsi support (of course, 
> also compiling in the other modules that ide-scsi needs in order to function).
> 
> You are entitled to your opinion ... it is your system after all ... but 
> personally I think it is smart to load during init, or compile in, support 
> for devices that hold filesystems.
> 
> 
> 
> 
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Ray Olszewski]

At 02:06 PM 1/25/2004 +0300, Agri wrote:
>thanks for answers, but....
>the only thing i get: there is no way to configure loading of ide-scsi "ON 
>DEMAND".
>Am i right?
[old stuff deleted]

I alswys hate to say that a statement like yours is correct ... there are 
so many different ways of doing things on Linux/Unix systems, it may be 
merely that I do not know the one that will solve your problem ... but I do 
believe that there is no way to use "on demand" loading in this case ... 
or, in fact, any case that involves access to filesystems. The only way for 
you to be certain of that, though, it to wait and see whether someone else, 
someone who knows a different bag of tricks from mine, suggests a method 
that works for you.

I am also sorry if my prior response was so poorly phrased that that is the 
"only thing [you] get" from it. I was attempting to be more helpful than that.



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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Agri]

anyway thanks for answer... it's good answer i think :-)
i just knew it before...

here... i want to mention one strange thing...
if i "touch" for hd? device "hided" by ide-scsi kmod will request for a module and
system will load ide-scsi... curious... don't you think?

Agri

On Sun, 25 Jan 2004 08:28:31 -0800
Ray Olszewski <ray@comarre.com> wrote:

> At 02:06 PM 1/25/2004 +0300, Agri wrote:
> >thanks for answers, but....
> >the only thing i get: there is no way to configure loading of ide-scsi "ON 
> >DEMAND".
> >Am i right?
> [old stuff deleted]
> 
> I alswys hate to say that a statement like yours is correct ... there are 
> so many different ways of doing things on Linux/Unix systems, it may be 
> merely that I do not know the one that will solve your problem ... but I do 
> believe that there is no way to use "on demand" loading in this case ... 
> or, in fact, any case that involves access to filesystems. The only way for 
> you to be certain of that, though, it to wait and see whether someone else, 
> someone who knows a different bag of tricks from mine, suggests a method 
> that works for you.
> 
> I am also sorry if my prior response was so poorly phrased that that is the 
> "only thing [you] get" from it. I was attempting to be more helpful than that.
> 
> 
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[pa3gcu]

On Sunday 25 January 2004 19:10, Agri wrote:
> here... i want to mention one strange thing...
> if i "touch" for hd? device "hided" by ide-scsi kmod will request for a
> module and system will load ide-scsi... curious... don't you think?

Too be honest i have no clue as to what you mean however i never have any 
problem with loading of modules, normally speaking i never have to use 
modprobe, i only use modprobe if i do things via scripts and that only to 
make sure the module is loaded otheriwse the sript would need to do all sorts 
of checks first.

I dont know if you tryed my suggestion i made in my last mail on this subject, 
another is simply add;
append="hdX=ide-scsi"
X= a,b,c or d on your system, to /etc/lilo.conf and rerun lilo or do the 
equivilant under grub if thats what you use.
As you said you did not like the idea of loading modules at boottime but i 
think you should reconsider as that in itself does not hinder or slow down 
your system one bit.

-- 
If the Linux community is a bunch of theives because they
try to imitate windows programs, then the Windows community
is built on organized crime.

Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/



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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Ken Moffat]

On Sun, 25 Jan 2004, Agri wrote:

> thanks for answers, but....
> the only thing i get: there is no way to configure loading of ide-scsi "ON DEMAND".
> Am i right?
>

Following are from my modules.conf.

First, make sure there is a path pointing to the directory where the
actual modules are found (maybe not necessary), such as

path[scsi]=/lib/modules/`uname -r`/kernel/drivers/scsi

The following let me use /dev/scd0 to access the CD for reading, and sg
(I guess) for writing from cdrecord:

alias scsi_hostadapter ide-scsi
alias scd0 sr_mod # load sr_mod upon access of scd0
pre-install sg modprobe ide-scsi # load ide-scsi before sg
pre-install sr_mod modprobe ide-scsi
pre-install ide-scsi modprobe scsi_mod

You'll probably need to rerun depmod after changing modules.conf.
Of course, unless your distro runs a cron job to unload unused modules,
once they've been loaded they stay loaded.

HTH,

Ken
-- 
This is a job for Riviera Kid!
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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Agri]

Oh.... i did everything as you say many times before...
i get success only this time.
i have done a little investigation...
there is no need of
  pre-install sg modprobe ide-scsi # load ide-scsi before sg
  pre-install sr_mod modprobe ide-scsi
moreover these lines breaks loading after "rmmod -a"
lines from logs:
insmod: /lib/modules/2.4.23-rc1/kernel/drivers/cdrom/cdrom.o: pre-install sr_mod failed
insmod: /lib/modules/2.4.23-rc1/kernel/drivers/cdrom/cdrom.o: insmod block-major-11 failed

and line
  pre-install ide-scsi modprobe scsi_mod
breaks everything cause:
  modprobe: Can't locate module scsi_mod

now i'm more confused about modules, and about rmmod because it does not always
remove unused modules.....

thanx a lot for answer.

Agri

On Mon, 26 Jan 2004 00:08:29 +0000 (GMT)
Ken Moffat <ken@kenmoffat.uklinux.net> wrote:

> On Sun, 25 Jan 2004, Agri wrote:
> 
> > thanks for answers, but....
> > the only thing i get: there is no way to configure loading of ide-scsi "ON DEMAND".
> > Am i right?
> >
> 
> Following are from my modules.conf.
> 
> First, make sure there is a path pointing to the directory where the
> actual modules are found (maybe not necessary), such as
> 
> path[scsi]=/lib/modules/`uname -r`/kernel/drivers/scsi
> 
> The following let me use /dev/scd0 to access the CD for reading, and sg
> (I guess) for writing from cdrecord:
> 
> alias scsi_hostadapter ide-scsi
> alias scd0 sr_mod # load sr_mod upon access of scd0
> pre-install sg modprobe ide-scsi # load ide-scsi before sg
> pre-install sr_mod modprobe ide-scsi
> pre-install ide-scsi modprobe scsi_mod
> 
> You'll probably need to rerun depmod after changing modules.conf.
> Of course, unless your distro runs a cron job to unload unused modules,
> once they've been loaded they stay loaded.
> 
> HTH,
> 
> Ken
> -- 
> This is a job for Riviera Kid!
> -
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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[Ken Moffat]

On Mon, 26 Jan 2004, Agri wrote:

> Oh.... i did everything as you say many times before...
> i get success only this time.
> i have done a little investigation...
> there is no need of
>   pre-install sg modprobe ide-scsi # load ide-scsi before sg
>   pre-install sr_mod modprobe ide-scsi
> moreover these lines breaks loading after "rmmod -a"

Ok,

 if you don't need them, don't use them!  At one time they appeared to
be necessary for me (although I was also doing some other stuff for my
ide zip drive, which I cut out of the example).  I've never
intentionally used rmmod for these things, so it doesn't surprise me
that I can break it :)  Maybe you need to tell rmmod to remove each of
these modules, not just the 'top level'.  Module loading has always been
one of the harder things to find accurate information for.

Ken
-- 
This is a job for Riviera Kid!
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Re: howto configuring kernel and modules.conf for automatic loading of ide-scsi

[pa3gcu]

On Monday 26 January 2004 10:46, Agri wrote:
> Oh.... i did everything as you say many times before...
> i get success only this time.
> i have done a little investigation...
> there is no need of
>   pre-install sg modprobe ide-scsi # load ide-scsi before sg
>   pre-install sr_mod modprobe ide-scsi
> moreover these lines breaks loading after "rmmod -a"
> lines from logs:

I think you need to go back to "start" which means, no i will ask, just what 
do you want to do and just what do you have;?

I mean, what sort of cdrom, is it a writer.? or simply just a cdrom device.?
There are many ways under linux of killing the cat, you have been given, 
AFAIK, 3 different examples, all of which should work, however they may not 
work for you because we have to fill in the gaps in the info you provided.

In other words tell me/us what type of cdrom you have, your installed distro 
its version and its kernel, i belive you mentioned 2.4.23-rc1 (BAD) never 
experiment trying to do something you possably never have done before on a 
kernel you built yourself, (unless you know what you are doing of course).
Use the kernel from your distro, i can assure you it has ALL you need.

On top of all that send us the commands used and thier corrisponding error 
messages when there is a problem. 

-- 
If the Linux community is a bunch of theives because they
try to imitate windows programs, then the Windows community
is built on organized crime.

Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/



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