> when i delete the files which are on the stick and do an umount/mount cycle, > the files are there again. >[... other mail ...]
> I did the usbmon thing (hopefully correctly). Attached is the output. Yes, that was perfect, thanks a lot. Unfortunately, I do not see a lot of interesting things. The last write before the disconnect is a FAT update: c31650b8 1617078003 S Bo:006:01 -115 31 = 55534243 c6000000 00020000 00000a2a 00000000 30000001 00000000 000000 c31650b8 1617078987 C Bo:006:01 0 31 > c31650b8 1617078997 S Bo:006:01 -115 512 = f8ffffff ffffffff ffffffff 00000000 00000000 00000000 00000000 00000000 c31650b8 1617080988 C Bo:006:01 0 512 > c31650b8 1617080998 S Bi:006:02 -115 13 < c31650b8 1617084987 C Bi:006:02 0 13 = 55534253 c6000000 00000000 00 Only one cluster was taken, when compared with the FAT that was read. Everything seems to be in order. But the next trace (after replug - see the device number changing from 6 to 7) shows FAT with old contents being read (same block number 0x30): > cd6960b8 1874976301 S Bo:007:01 -115 31 = 55534243 0b000000 00020000 80000a28 > 00000000 30000001 00000000 000000 > cd6960b8 1874977274 C Bo:007:01 0 31 > > cd6960b8 1874977288 S Bi:007:02 -115 512 < > cd6960b8 1874979271 C Bi:007:02 0 512 = f8ffffff ffffffff ffff0000 00000000 > 00000000 00000000 00000000 00000000 > cd6960b8 1874979282 S Bi:007:02 -115 13 < > cd6960b8 1874981271 C Bi:007:02 0 13 = 55534253 0b000000 00000000 00 So, the device replies that writes were successful, but does not actually commit them to the stable storage. I suspect that this device may require some delays. I seem to recall that we added delayes to usb-storage when we worked with Genesys Logic. But ub contains no delays. How about this: --- linux-2.6.13-rc4/drivers/block/ub.c 2005-07-29 19:51:00.000000000 -0700 +++ linux-2.6.13-rc4-lem/drivers/block/ub.c 2005-08-07 13:48:11.000000000 -0700 @@ -1209,6 +1279,8 @@ return; } + udelay(125); // XXX for Martin Maurer <[EMAIL PROTECTED]> + UB_INIT_COMPLETION(sc->work_done); if (cmd->dir == UB_DIR_READ) Please try this patchlet and let us know how it went. -- Pete - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/