Hi, I am facing problem with mentor usb host mode. I am doing mass storage emulation using pen driver with bulk only transport protocol. Device is detected. I am able to run mkdosfs and fdisk over it. I checked that file systems are correctly create with scsi write and read operations successfully done.
Mkdosfs /dev/sdb or fdisk /dev/sdb work correctly. However while mounting ( mount -t vfat /dev/sdb /new/ ) give error "No such device. I checked the major no as per documentation. I am finding them correct. brw-r--r-- 1 root root 8, 0 Aug 14 2006 sda brw-r--r-- 1 root root 8, 1 Aug 14 2006 sda1 brw-r--r-- 1 root root 8, 2 Aug 14 2006 sda2 brw-r--r-- 1 root root 8, 16 Jan 1 00:10 sdb brw-r--r-- 1 root root 8, 17 Aug 17 2006 sdb1 brw-r--r-- 1 root root 8, 18 Aug 17 2006 sdb2 brw-r--r-- 1 root root 8, 32 Aug 14 2006 sdc brw-r--r-- 1 root root 8, 33 Aug 17 2006 sdc1 brw-r--r-- 1 root root 8, 34 Aug 17 2006 sdc2 brw-r--r-- 1 root root 8, 35 Aug 17 2006 sdc3 brw-r--r-- 1 root root 8, 36 Aug 17 2006 sdc4 crw-r--r-- 1 root root 21, 0 Aug 14 2006 sg0 crw-r--r-- 1 root root 21, 3 Aug 14 2006 sg3 I've checked major_names[] for index 8, there device name is "sd". Pls note that mount give same error for sdb1, sdc1, sdc4, sdc2, sda, sda1. Can you give me any clue? I also checked in sysfs that major & minor numbers for sdb are 8, 15. I am using 2.6.16 kernel in static compilation for scsi and mass storage. Have any one used usb mass storage over 2.6.16 in static mode rather than modules? Thanks Regards Manish -----Original Message----- From: Alan Stern [mailto:[EMAIL PROTECTED] Sent: Monday, August 14, 2006 8:06 PM To: Manish RATHI Cc: linux-usb-devel@lists.sourceforge.net Subject: Re: [linux-usb-devel] Usb storage mount problem On Mon, 14 Aug 2006, Manish RATHI wrote: > Hi, > I am using my usb controller driver in host mode for mass torage > emulation. Mass torage device is detected and I got following prints > SCSI device sdb: 1024 512-byte hdwr sectors (1 MB) > > > sdb: Write Protect is off > > sdb: assuming drive cache: write through > > sdb:<7>usb-storage: queuecommand called > > unknown partition table ... > SCSI device sdc: 1024 512-byte hdwr sectors (1 MB) > > > sdc: Write Protect is on > > sdc: assuming drive cache: write through > > sdc:<7>usb-storage: queuecommand called > > > > sdc1 sdc4 > I mounted usbfs and able to see mass storage in /proc/bus/usb/devices > > However when I try to mount by > Mount -t vfat /dev/sda /mnt/pendrive then > I get error "Mounting /dev/sda on /mems failed: No such device" I > tried it on sdb and sdc as well but it's not mounted. > > Can any one tell me abt possible problem? You have two USB mass storage devices: /dev/sdb and /dev/sdc. So of course trying to mount /dev/sda doesn't work. If mounting /dev/sdb doesn't work, it could be that the device isn't formatted. You might have to run mkdosfs /dev/sdb You shouldn't try to mount /dev/sdc; instead you should try to mount either /dev/sdc1 or /dev/sdc4. But first you will have to create entries for sdc1 and sdc4 in /dev, because they don't exist already: mknod b 8 33 /dev/sdc1 mknod b 8 36 /dev/sdc4 BTW, this would be much easier if you used udev. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
