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Invisiblesherm
sherman
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Posts: 20,498
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scsi emulation in Debian
    #3699456 - 01/29/05 06:35 PM (19 years, 2 months ago)

i have the ide-scsi module enabled.

i changed the symlink

#rm /dev/cdrom
#ln -s /dev/scd0 /dev/cdrom

i'm using grub, i'm not sure how to edit menu.lst

i tried adding

hdb=scsi hdc=scsi

and

hdc=ide-scsi

at the the end of the kernel line

either way, #cdrecord -scanbus
says
cdrecord: No such file or directory. Cannot open '/dev/pg*'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

yep,
the kernel is vmlinuz-2.4.27-1-386
debian version 3.1


any ideas?
thanks.


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Offlinedelta9
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Re: scsi emulation in Debian [Re: sherm]
    #3699852 - 01/29/05 08:04 PM (19 years, 2 months ago)

Quote:

i'm using grub, i'm not sure how to edit menu.lst



Follow the yellow brick road...
Code:
$ head -3 /boot/grub/menu.lst
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub



Quote:

i tried adding

hdb=scsi hdc=scsi

and

hdc=ide-scsi

at the the end of the kernel line



So, uh, why are you doing this?

Quote:

either way, #cdrecord -scanbus
says
cdrecord: No such file or directory. Cannot open '/dev/pg*'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.



Did you check
Code:
$ more /usr/share/doc/cdrecord/README.ATAPI.setup


or other documentation?

Quote:

yep,
the kernel is vmlinuz-2.4.27-1-386
debian version 3.1



Also include the release, i.e. sarge or sid (both are 3.1 right now)

Quote:

any ideas?



Friendly #debian bot on freenode says
Quote:

21:33 <delta9> any ideas
21:33 <dpkg> Yeah, I have an idea! But I'll need a drawer full of rutabagas, a little WD-40, and 42 rabid hamsters.
And keep the CIA off my back for the next few hours!




Quote:

thanks.



Don't mention it.

dpkg also had this to say:
Quote:

21:49 <delta9> ide cdr scsi
21:49 <dpkg> You need to disable (or compile as a module) ide-cdrom support and enable idescsi (block devices), scsi, scsi cdrom, scsi generic support in a 2.2.x onwards kernel. Check for similar options on a 2.0.x kernel


Don't know if this applies to 2.4 still, the factoid is as old as woody.

... Also, you never explained what it was you are actually trying to do (though I can guess... still, one must never assume).


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Invisiblesherm
sherman
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Registered: 10/02/03
Posts: 20,498
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Re: scsi emulation in Debian [Re: delta9]
    #3705180 - 01/30/05 11:28 PM (19 years, 1 month ago)

READ THE FUCKING MANUAL .............     

haha, sorry
yea, i should have looked at the answer it put if front of my face.

at least i googled it.

now i have to bother you some more. :laugh:

Ok , the output from #grep hd.: /var/log/kern.log says.

hda: WDC WD200EB-00CPF0, ATA DISK drive
hdc: SAMSUNG CD-R/RW SW-248F, ATAPI CD/DVD-ROM drive
hda: attached ide-disk driver.
hda: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(100)
hdc: attached ide-cdrom driver.
hdc: ATAPI 48X CD-ROM CD-R/RW drive, 8192kB Cache, UDMA(33)
ide0: BM-DMA at 0xff00-0xff07, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xff08-0xff0f, BIOS settings: hdc:DMA, hdd:DMA


the cdrecord README says

3. Find a line where you can append additional kernel parameters, eg.
  "append=" in lilo.conf or the loadlin-line in the batch file.
4. Append sth. like this: "hdb=ide-scsi hdc=ide-scsi max_scsi_luns=1"
  The hdX-parameters defines devices that should be mapped to SCSI
  latter. You may do it with non-writers too, since the emulation layer
  is almost complete. Or omit some so the devices will use their
  native drivers (eg. ide-cd).

What does it mean "Append sth." what does it mean "sth."

Do i change my  grub entry like this?

kernel          /boot/vmlinuz-2.4.27-1-386 root=/dev/hda1 ro hdb=ide-scsi hdc=ide-scsi max_scsi_luns=1


or should i just add this because the drive is hdc

kernel          /boot/vmlinuz-2.4.27-1-386 root=/dev/hda1 ro hdc=ide-scsi max_scsi_luns=1

i'll try both, no better way to learn than to break somthing.

what do you think? Do i have the right idea?
:strokebeard:


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Offlinedelta9
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Re: scsi emulation in Debian [Re: sherm]
    #3707071 - 01/31/05 10:38 AM (19 years, 1 month ago)

Quote:

sherm said:
READ THE FUCKING MANUAL .............



At least YOU said it...  This is the first thing any debian user will tell you.  The way to counter it is make sure you actually read the manual and prove so when asking your questions by referencing it :smile:...  Why people get all bitchy that we force people to do this, I don't know as it just makes them better in the end :shrug: . Lazy sods is what I think. :laugh:

Quote:

haha, sorry
yea, i should have looked at the answer it put if front of my face.

at least i googled it.



Yes, you should always do several things on a linux system.  Generally I do them in this order: I check the manpage (`man programname'), check the info page (`info programname'), google.  On debian systems you also have the (awesome, one reason why I *love* debian) option to check in /usr/share/doc/packagename.  This is guaranteed to exist for most every package, as it is a violation of policy for a package to NOT have entries there.  Of course, how helpful it is depends on the maintainer, but that's why there's man, info, and google as well.  Generally, unless I'm in a fix for time, I *only* ask (and believe me, I ask plenty of questions, too!) after doing all of that.  It usually helps you better articulate your problem and it shows the people helping you that you did some research, which makes them feel more like they are helping you than GIVING you the answer...[/rant]

On to things :smile:
Quote:

hdc: SAMSUNG CD-R/RW SW-248F, ATAPI CD/DVD-ROM drive
hdc: attached ide-cdrom driver.
hdc: ATAPI 48X CD-ROM CD-R/RW drive, 8192kB Cache, UDMA(33)
ide1: BM-DMA at 0xff08-0xff0f, BIOS settings: hdc:DMA, hdd:DMA



These are all we're concerned about, and the lack of error messages is a Good Thing :thumbup:

Quote:

3. Find a line where you can append additional kernel parameters, eg.
  "append=" in lilo.conf or the loadlin-line in the batch file.
4. Append sth. like this: "hdb=ide-scsi hdc=ide-scsi max_scsi_luns=1"
  The hdX-parameters defines devices that should be mapped to SCSI
  latter. You may do it with non-writers too, since the emulation layer
  is almost complete. Or omit some so the devices will use their
  native drivers (eg. ide-cd).

What does it mean "Append sth." what does it mean "sth."



Ok, a couple things to note about the nature of debian.  Every package has a maintainer who is personally responsible for that package.  Often, they make mistakes in language, especially if english is their second language.  "Joerg Jaspert" maintains the cdrtools package, in which cdrecord is included.  Joerg also has been using debian for some time, as his information only contains information for LILO and not GRUB (which is now the default debian bootloader).  So what does he mean?  I think he meant "append it", which in GRUB is accomplished as passing commandline paramaters to the kernel image (that is, the way you have been doing it is fine). :laugh:  Report a bug (lowest priority) or contact a maintainer if you are interested in helping (but I would think this could have been reported by now, as it has been quite a while).  Also, check bugs from time to time.

Quote:


Do i change my  grub entry like this?

kernel          /boot/vmlinuz-2.4.27-1-386 root=/dev/hda1 ro hdb=ide-scsi hdc=ide-scsi max_scsi_luns=1


or should i just add this because the drive is hdc

kernel          /boot/vmlinuz-2.4.27-1-386 root=/dev/hda1 ro hdc=ide-scsi max_scsi_luns=1

i'll try both, no better way to learn than to break somthing.

what do you think? Do i have the right idea?
:strokebeard:



You should only need to map hdc to scsi, as this is the drive in question.  And yes! I think you certainly have the right idea and were on the right track to begin with, just needed a little push or point (as we all do) in the right direction :smile:

Also, while I'm ranting about debian, if you haven't already, I highly recommend the package "apt-listbugs" be installed.  It will alert you about current bugs in a program when you install with apt, which can be useful as sometimes you may encounter the same issue but you already knew about it so you don't freak out :smile:.


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InvisibleMarioNett
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Registered: 07/21/03
Posts: 354
Re: scsi emulation in Debian [Re: sherm]
    #3711040 - 01/31/05 11:39 PM (19 years, 1 month ago)

In kernel 2.6 this sort of scsi emulation isn't needed; you can record properly on the /dev/hdc or whatever device. So in case you were considering upgrading, there's one more reason.

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Invisiblesherm
sherman
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Registered: 10/02/03
Posts: 20,498
Loc: Euthanasia
Re: scsi emulation in Debian [Re: MarioNett]
    #3711372 - 02/01/05 12:52 AM (19 years, 1 month ago)

upgrading the kernel sounds like a whole new adventure!!!!
i'm not sure if i'm up to that yet


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Invisiblesherm
sherman
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Posts: 20,498
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Re: scsi emulation in Debian [Re: delta9]
    #3711441 - 02/01/05 01:25 AM (19 years, 1 month ago)

i got it working
if you don't mind, could you tell me if i did this corectly?

the ATAPI setup says

Setup cdrecord's environment - edit /etc/default/cdrecord:
CDR_DEVICE=cdrw
cdrw=1,0,0 4 8m
cdrom=1,2,0 0 0m
Insert the right values, the fields are described in the manpage
of cdrecord. Alternatively, you may use this values as
cdrecord-parameter or take a frontend with an own configuration
scheme, then you don't need to modify /etc/default/cdrecord.
The columns must be separated by tabs.

ths is the output of
#cdrecord -scanbus

scsibus0:
0,0,0 0) 'SAMSUNG ' 'CD-R/RW SW-248F ' 'R602' Removable CD-ROM
0,1,0 1) *
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *


the cdrecord defaut enviroment looked like this

# drive name device speed fifosize driveropts

teac= 1,3,0 -1 -1 ""
panasonic= 1,4,0 -1 -1 ""
plextor= 1,4,0 -1 -1 ""
sanyo= 1,4,0 -1 -1 burnfree
yamaha= 1,5,0 -1 -1 ""
cdrom= 0,6,0 2 1m ""

i changed i tto look like this

# drive name device speed fifosize driveropts
#
SAMSUNG= 0,0,0 -1 -1 ""
#teac= 1,3,0 -1 -1 ""
#panasonic= 1,4,0 -1 -1 ""
#plextor= 1,4,0 -1 -1 ""
#sanyo= 1,4,0 -1 -1 burnfree
#yamaha= 1,5,0 -1 -1 ""
#cdrom= 0,6,0 2 1m ""


have i done this correctly?


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Offlinenife
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Registered: 12/26/03
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Re: scsi emulation in Debian [Re: sherm]
    #3724877 - 02/03/05 02:06 PM (19 years, 1 month ago)

My advice, get the 2.6 kernel. its worth it
Great kernel, I use Linux 2.6.9-ck3


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Invisiblesherm
sherman
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Posts: 20,498
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Re: scsi emulation in Debian [Re: nife]
    #3731469 - 02/04/05 04:32 PM (19 years, 1 month ago)

i reinstalled debian with the 2.6* kernel and it fucked firefox up
it took forever to load anything. I had to use Konquerer. it sucked
i tried twice, no go.............. and back to 2.4*


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Offlinedelta9
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Re: scsi emulation in Debian [Re: sherm]
    #3731571 - 02/04/05 04:52 PM (19 years, 1 month ago)

You shouldn't need to reinstall to try new kernels. Just `apt-cache search kernel-image-2.' and install one of those. Run `update-grub' and reboot.


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