[Solved] Help getting a Canon Vixia / Legria HFS10 mounted

[koan]

Hello,

I am trying to get a camcorder recognised by my gentoo install, and I suspect I have something missing from the kernel. Here is a dmesg of a working attachment, on an opensuse box with generic kernel:

[bmac]

I had the same problem with the Canon Vixia HF21 which is also a dual flash memory camcorder. I was about to buy a card reader, so I read a few articles about kernel configuration for card readers. As I read, I found that there was one configuration that I needed for the camcorder flash drive to be recognized: The piece that I was missing was the "probe all LUNs" kernel setting: CONFIG_SCSI_MULTI_LUN.

Without this setting, the kernel sees only the external card slot on the camcorder. In my case, it was empty and the SCSI module was reporting media not found.

With CONFIG_SCSI_MULTI_LUN set to Y, the camcorder works! Apparently the setting allows the SCSI module to be able to see both the internal flash memory and the external flash memory on the camcorder.

For reference, here's the article that I found for configuring the kernel for card readers: http://www.cs.sfu.ca/~ggbaker/personal/cf-lin.

Here's the kernel settings related to usb-storage that I'm using.
# SCSI device support
CONFIG_SCSI_MOD=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_PROC_FS is not set
# SCSI support type (disk, tape, CD-ROM)
CONFIG_SCSI_MULTI_LUN=y
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set
CONFIG_SCSI_WAIT_SCAN=m
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_SG=m
CONFIG_USB_HID=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_EHCI_HCD=m
ONFIG_USB_STORAGE=y
CONFIG_USB_STORAGE_DEBUG=y
CONFIG_USB_STORAGE_DATAFAB=y
CONFIG_USB_STORAGE_FREECOM=y
CONFIG_USB_STORAGE_ISD200=y
CONFIG_USB_STORAGE_USBAT=y
CONFIG_USB_STORAGE_SDDR09=y
CONFIG_USB_STORAGE_SDDR55=y
CONFIG_USB_STORAGE_JUMPSHOT=y
CONFIG_USB_STORAGE_ALAUDA=y
CONFIG_USB_STORAGE_ONETOUCH=y
CONFIG_USB_STORAGE_KARMA=y
CONFIG_USB_STORAGE_CYPRESS_ATACB=y

[koan]

Hi bmac,

Thanks for posting this. I had added CONFIG_SCSI_MULTI_LUN as part of a less than scientific approach (enable anything that could potentially fix it) but had only just gotten around to testing.

I think you are right, and this is the one that is key to it working.

Cheers,

Paul