On Mon, 18 Jul 2005 [EMAIL PROTECTED] wrote:

> Hi, 
> 
> I've stumbled across a bit of a wierd problem: 
> 
> I've got the following: 
> 
> Mitac 5026 P200MMX Laptop (Kernel 2.6.12.2)
> + Cirrus Logic PD 6832 PCMCIA/CardBus Controller
> ++ Nec Cardbus USB 2.0 4 Port Cardbus Card
> +++ External USB 2.0 Harddisk caddy (Prolific ATAPI-6 Bridge Controller) 
> 
> 1. When I plug the external harddisk into the USB card (pre-formatted DOS 
> FAT).. it gets registered correctly (/dev/sd0). 
> 
> 2. when you fdisk it.. you get the partition information ok... 
> 
> 3. In this instance I changed the tag from DOS to LINUX on the partition and 
> wrote to disk at which point fdisk stops at: "Calling Ioctl...." (Screen 
> capture 1) 
> 
> 4. When it eventually returns after syncing disks, another fdisk reveals no 
> partitions on the disk (Screen capture 2). At which point I have to 
> disconnect and reformat (via the usb) on a Winblows box. 
> 
> 5. A similar issue arises if I mount the DOS partition and try to copy stuff 
> to it.. the copying just stops part way though. 
> 
> 6. Another very wierd thing is... it does the same with NetBSD. 
> 
> I've included the dmesg, the lspci -v, lsusb -v, and the screen captures. 
> The debug/syslog/message logs are pretty big.. I can post them here or email 
> if necessary. Any testing, debugging or patches I can test, I am more than 
> happy to ablige! 

What would help most is the usb-storage debugging output for the fdisk 
sessions.  The logs that you posted looked quite normal.

Alan Stern



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