Hi,
I have noticed an issue with writing to a USB mass storage device, which is
a flash-rom-based mp3 player.
I first noticed this issue with kernel 2.6.5 and the -mm6 patchset. I have
verified that this issue still occurs with 2.6.6-rc1-bk4, as requested by
Andrew Morton. This error was never noticed in any kernel v2.6.3 or less;
including v2.4.x kernels; both stock and with -wolk and -mm patchsets.
The errors occur similar to this in my kernel logs:
Apr 19 15:16:04 pc196344 kernel: usb 3-2: new full speed USB device using
address 2
Apr 19 15:16:04 pc196344 kernel: Initializing USB Mass Storage driver...
Apr 19 15:16:04 pc196344 kernel: scsi0 : SCSI emulation for USB Mass Storage
devices
Apr 19 15:16:05 pc196344 kernel: Vendor: DIVA USB Model: Media Reader
Rev: 2.22
Apr 19 15:16:05 pc196344 kernel: Type: Direct-Access
ANSI SCSI revision: 02
Apr 19 15:16:05 pc196344 kernel: Attached scsi generic sg0 at scsi0, channel
0, id 0, lun 0, type 0
Apr 19 15:16:05 pc196344 kernel: USB Mass Storage device found at 2
Apr 19 15:16:05 pc196344 kernel: usbcore: registered new driver usb-storage
Apr 19 15:16:05 pc196344 kernel: USB Mass Storage support registered.
Apr 19 15:16:05 pc196344 kernel: SCSI device sda: 446976 512-byte hdwr
sectors (229 MB)
Apr 19 15:16:05 pc196344 kernel: sda: assuming Write Enabled
Apr 19 15:16:05 pc196344 kernel: sda: assuming drive cache: write through
Apr 19 15:16:05 pc196344 kernel: /dev/scsi/host0/bus0/target0/lun0: p1
Apr 19 15:16:05 pc196344 kernel: Attached scsi removable disk sda at scsi0,
channel 0, id 0, lun 0
Apr 19 15:19:07 pc196344 kernel: SCSI error : <0 0 0 0> return code =
0x6000000
Apr 19 15:19:07 pc196344 kernel: end_request: I/O error, dev sda, sector 112
Apr 19 15:19:07 pc196344 kernel: Buffer I/O error on device sda1, logical
block 111
Apr 19 15:19:07 pc196344 kernel: lost page write due to I/O error on sda1
Apr 19 15:21:37 pc196344 kernel: SCSI error : <0 0 0 0> return code =
0x6000000
Apr 19 15:21:37 pc196344 kernel: end_request: I/O error, dev sda, sector 160
Apr 19 15:21:37 pc196344 kernel: Buffer I/O error on device sda1, logical
block 159
Apr 19 15:21:37 pc196344 kernel: lost page write due to I/O error on sda1
I have recompiled a kernel with usb-storage verbose logging and SCSI
logging; and can provide output from these logs upon request.
I'm using a Gentoo distribution. The output from the "ver_linux" script in
the kernel tree is:
Linux pc196344 2.6.6-rc1-bk4 #1 Tue Apr 20 16:08:49 NZST 2004 i686 Intel(R)
Pentium(R) 4 CPU 2.00GHz GenuineIntel GNU/Linux
Gnu C 3.3.2
Gnu make 3.80
binutils 2.14.90.0.7
util-linux 2.12
mount 2.12
module-init-tools 3.0
e2fsprogs 1.34
xfsprogs 2.3.9
PPP 2.4.1
nfs-utils 1.0.6
Linux C Library 2.3.3
Dynamic linker (ldd) 2.3.3
Procps 3.1.15
Net-tools 1.60
Kbd 1.08
Sh-utils 5.0.91
Modules Loaded sd_mod usb_storage sg nfsd exportfs lockd sunrpc
vmnet parport_pc parport vmmon usbhid uhci_hcd ehci_hcd e100 mii
snd_intel8x0 snd_ac97_codec snd_mpu401_uart snd_rawmidi snd_seq_oss
snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_pcm snd_page_alloc
snd_timer snd_mixer_oss snd soundcore rtc nvidia usbcore dm_mod st ide_cd
sr_mod scsi_mod cdrom
I don't know if it matters, but my glibc has been compiled with NPTL
support, thus:
GNU C Library stable release version 2.3.3, by Roland McGrath et al.
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 3.3.2 20031218 (Gentoo Linux 3.3.2-r5,
propolice-3.3-7).
Compiled on a Linux 2.6.2-jrt1 system on 2004-02-20.
Available extensions:
GNU libio by Per Bothner
crypt add-on version 2.1 by Michael Glad and others
NPTL 0.60 by Ulrich Drepper
BIND-8.2.3-T5B
NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk
Thread-local storage support included.
Report bugs using the `glibcbug' script to <[EMAIL PROTECTED]>.
If there is any more information that can be of use, please let me know.
Thanks,
James Roberts-Thomson
Senior Systems Engineer DDI +64 4 494 4436
Infrastructure Projects Tel +64 4 494 4000
The National Bank of New Zealand Limited Fax +64 4 802 8509
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