Dear sir,

I'm writing to you since you're in the linux kernel maintainers list as the
SCSI and block device subsystem guys.
I'm not sure you guys are really maintainers anymore, so I take the risk of
cc-ing the mailing list.

I just downloaded linux kernel 2.4.20 sources and compiled them to upgrade from
2.4.18.

I'm seeing a problem with the scsi subsystem: there is no block-major-8 device
registered. I am using a laptop with scsi-pcmcia adapter, and usb-storage scsi
emulation, but no low-level driver. I can use my usb cdrom drive (sr device
used by usb-storage).
But, after inserting my pcmcia adapter or pluging in my usb-storage devive, I
cannot mount the disk (/dev/sda1 in my case) as I used to with 2.4.18.
The only error message is:
modprobe: modprobe: Can't locate module block-major-8

Here's the information I think is relevant to the problem. If you need more,
please let me know.

My configuration file shows the following:
#
# SCSI support
#
CONFIG_SCSI=y
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
CONFIG_SD_EXTRA_DEVS=40
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_SR_VENDOR is not set
CONFIG_SR_EXTRA_DEVS=4
CONFIG_CHR_DEV_SG=m   
#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
CONFIG_SCSI_DEBUG_QUEUES=y
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
#
# SCSI low-level drivers
#
(none set)

A cat /proc/devices gives me:
Block devices:
  2 fd
  3 ide0
  7 loop
 11 sr
 43 nbd

A lsmod:
Module                  Size  Used by    Not tainted
sg                     28796   0  (unused)
usb-storage            22968   0 

Dmesg gives:
...
SCSI subsystem driver Revision: 1.00
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
Linux Kernel Card Services 3.1.22
  options:  [pci] [cardbus] [pm]
...

A cat /proc/scsi/scsi gives me;
Attached devices: 
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: PHILIPS  Model: PCRW406          Rev: I2,2
  Type:   CD-ROM                           ANSI SCSI revision: 02

When pluging my usb-storage hard drive, itīs recognized by usb-storage just
fine and shows as scsi1.

Compiling sd as a module instead of in the kernel does not seem to change
anything. Nor compiling with a scsi low-level driver. It seems that I need an
actual scsi device at boot time in order to see block device 8 (not tested, I
donīt have such a device)

Thanks,
------------------------------------------------------------------------
Eric GAUDET <eric@rti-zone.org>
Le 01-Dec-2002 a 18:32:24
------------------------------------------------------------------------

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