linux-kernel - Re: PROBLEM: writting files

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Message-ID: <87ps9bro6s.fsf@duaron.myhome.or.jp>
Date:	Sat, 20 Jan 2007 01:11:55 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	condor@...-bg.com
Cc:	"Kasper Sandberg" <lkml@...anurb.dk>, linux-kernel@...r.kernel.org
Subject: Re: PROBLEM: writting files > 100 MB in FAT32

"Condor" <condor@...-bg.com> writes:

>>>From debug log:
> Jan 16 14:56:13 elrond kernel: usb-storage: device found at 4
> Jan 16 14:56:13 elrond kernel: usb-storage: waiting for device to settle
> before scanning
> Jan 16 14:56:18 elrond kernel: sda: Mode Sense: 00 00 00 00
> Jan 16 14:56:18 elrond kernel: sda: Mode Sense: 00 00 00 00
> Jan 16 14:56:18 elrond kernel: usb-storage: device scan complete
>
>>>From syslog:
> Jan 16 14:56:18 elrond kernel: sda: assuming drive cache: write through
> Jan 16 14:56:40 elrond kernel: FAT: Filesystem panic (dev sda1)
> Jan 16 14:56:40 elrond kernel:     invalid access to FAT (entry 0x0fffcf03)
> Jan 16 14:56:40 elrond kernel:     File system has been set read-only

The disk seems flash disk, and this entry may be on the middle of
erasing block. The flash disk might be unplugged before flushing dirty
buffer to disk.  But, it's just my guess.

> Here are from message log:
>
> an 16 14:13:55 elrond kernel: usb 2-1: new full speed USB device using
> uhci_hcd and address 3
> Jan 16 14:13:55 elrond kernel: usb 2-1: configuration #1 chosen from 1 choice
> Jan 16 14:13:56 elrond kernel: Initializing USB Mass Storage driver...
> Jan 16 14:13:56 elrond kernel: scsi0 : SCSI emulation for USB Mass Storage
> devices
> Jan 16 14:13:56 elrond kernel: usbcore: registered new interface driver
> usb-storage
> Jan 16 14:13:56 elrond kernel: USB Mass Storage support registered.
> Jan 16 14:14:01 elrond kernel: scsi 0:0:0:0: Direct-Access     USB 2.0 
> Flash Disk       0.00 PQ: 0 ANSI: 2
> Jan 16 14:14:01 elrond kernel: SCSI device sda: 8060927 512-byte hdwr
> sectors (4127 MB)
> Jan 16 14:14:01 elrond kernel: sda: Write Protect is off
> Jan 16 14:14:01 elrond kernel: SCSI device sda: 8060927 512-byte hdwr
> sectors (4127 MB)
> Jan 16 14:14:01 elrond kernel: sda: Write Protect is off
> Jan 16 14:14:01 elrond kernel:  sda: sda1 sda2
> Jan 16 14:14:01 elrond kernel: sd 0:0:0:0: Attached scsi removable disk sda
> Jan 16 14:14:01 elrond kernel: sd 0:0:0:0: Attached scsi generic sg0 type 0
> Jan 16 14:28:22 elrond -- MARK --
> Jan 16 14:37:52 elrond kernel: usb 2-1: USB disconnect, address 3
> Jan 16 14:48:22 elrond -- MARK --
> Jan 16 14:56:13 elrond kernel: usb 2-1: new full speed USB device using
> uhci_hcd and address 4
> Jan 16 14:56:13 elrond kernel: usb 2-1: configuration #1 chosen from 1 choice
> Jan 16 14:56:13 elrond kernel: scsi1 : SCSI emulation for USB Mass Storage
> devices
> Jan 16 14:56:18 elrond kernel: scsi 1:0:0:0: Direct-Access     USB 2.0 
> Flash Disk       0.00 PQ: 0 ANSI: 2
> Jan 16 14:56:18 elrond kernel: SCSI device sda: 8060927 512-byte hdwr
> sectors (4127 MB)
> Jan 16 14:56:18 elrond kernel: sda: Write Protect is off
> Jan 16 14:56:18 elrond kernel: SCSI device sda: 8060927 512-byte hdwr
> sectors (4127 MB)
> Jan 16 14:56:18 elrond kernel: sda: Write Protect is off
> Jan 16 14:56:18 elrond kernel:  sda: sda1 sda2
> Jan 16 14:56:18 elrond kernel: sd 1:0:0:0: Attached scsi removable disk sda
> Jan 16 14:56:18 elrond kernel: sd 1:0:0:0: Attached scsi generic sg0 type 0
> Jan 16 14:58:14 elrond kernel: usb 2-1: USB disconnect, address 4
> Jan 16 14:59:48 elrond /usr/sbin/gpm[1216]: *** info [mice.c(1766)]:
> Jan 16 14:59:48 elrond /usr/sbin/gpm[1216]: imps2: Auto-detected
> intellimouse PS/2
> Jan 16 15:28:22 elrond -- MARK --
> Jan 16 15:32:04 elrond kernel: usb 2-1: new full speed USB device using
> uhci_hcd and address 5
> Jan 16 15:32:04 elrond kernel: usb 2-1: configuration #1 chosen from 1 choice
> Jan 16 15:32:04 elrond kernel: scsi2 : SCSI emulation for USB Mass Storage
> devices
> Jan 16 15:32:09 elrond kernel: scsi 2:0:0:0: Direct-Access     USB 2.0 
> Flash Disk       0.00 PQ: 0 ANSI: 2
> Jan 16 15:32:09 elrond kernel: SCSI device sda: 8060927 512-byte hdwr
> sectors (4127 MB)
> Jan 16 15:32:09 elrond kernel: sda: Write Protect is off
> Jan 16 15:32:09 elrond kernel: SCSI device sda: 8060927 512-byte hdwr
> sectors (4127 MB)
> Jan 16 15:32:09 elrond kernel: sda: Write Protect is off
> Jan 16 15:32:09 elrond kernel:  sda: sda1 sda2
> Jan 16 15:32:09 elrond kernel: sd 2:0:0:0: Attached scsi removable disk sda
> Jan 16 15:32:09 elrond kernel: sd 2:0:0:0: Attached scsi generic sg0 type 0
> Jan 16 15:39:16 elrond kernel: usb 2-1: reset full speed USB device using
> uhci_hcd and address 5
> Jan 16 15:50:24 elrond kernel: usb 2-1: USB disconnect, address 5
>
>
> These are the logs that i have. I hope that this can help you.
>
> Regards,
> Condor
>
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-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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