Message-ID: <AANLkTinHUQkBvcvh9APVutOqcKOug6CA066kS_O4p4Tq@mail.gmail.com>
Date:	Wed, 23 Mar 2011 07:30:53 +0100
From:	Belisko Marek <marek.belisko@...il.com>
To:	Chuck Lever <chuck.lever@...cle.com>
Cc:	Trond.Myklebust@...app.com, broonie@...nsource.wolfsonmicro.com,
	bdowning@...os.net, linux-nfs@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [bisect] kernel 2.6.38 regression with root nfs mounting

Added linux-nfs to CC (to keep history) add added log with nfsdebugroot enabled.

On Tue, Mar 22, 2011 at 1:34 PM, Chuck Lever <chuck.lever@...cle.com> wrote:
>
> On Mar 22, 2011, at 3:51 AM, Belisko Marek wrote:
>
>> After update from 2.6.38-rc8 to 2.6.38 is mounting rootfs over nfs not possible.
>> Log:
>> VFS: Mounted root (nfs filesystem) on device 0:14.
>> Freeing init memory: 132K
>> nfs: server 10.146.1.21 not responding, still trying
>> nfs: server 10.146.1.21 not responding, still trying
>>
>> This is never ending. I make short bisect (not too much commits
>> between versions)
>> and bad commit was reported: 53d4737580535e073963b91ce87d4216e434fab5
>>
>> NFS: NFSROOT should default to "proto=udp"
>>
>> I've tested on mini2440 board (DM9000, static IP).
>> Is there some missing option or something else to be checked?
>
> NFSROOT is supposed to work as it did before 2.6.37.
>
> Enable NFSROOT debugging (see the description of nfsrootdebug in Documentation/filesystems/nfs/nfsroot.txt), try your boot, and then post the contents of your system log to linux-nfs@...r.kernel.org.
>
> --
> Chuck Lever
> chuck[dot]lever[at]oracle[dot]com
>
>
>
>
>

Linux version 2.6.38-rc7+ (open-nandra@...t) (gcc version 4.5.1
(Sourcery G++ Lite 2010.09-50) ) #1 Wed Mar 23 07:23:36 CET 2011
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: MINI2440
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, Copyright 2004 Simtec Electronics
S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: console=ttySAC0,115200 noinitrd init=/sbin/init
mini2440=1b nfsrootdebug root=/dev/nfs rw
nfsroot=10.146.1.21:/home/open-nandra/rootfs
ip=10.146.1.199:10.146.1.21::255.20
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 60536k/60536k available, 5000k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    DMA     : 0xffc00000 - 0xffe00000   (   2 MB)
    vmalloc : 0xc4800000 - 0xf6000000   ( 792 MB)
    lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
    modules : 0xbf000000 - 0xc0000000   (  16 MB)
      .init : 0xc0008000 - 0xc0029000   ( 132 kB)
      .text : 0xc0029000 - 0xc03e9bb4   (3843 kB)
      .data : 0xc03ea000 - 0xc040e220   ( 145 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:85
irq: clearing pending status 02000000
irq: clearing subpending status 00000002
Console: colour dummy device 80x30
console [ttySAC0] enabled
Calibrating delay loop... 201.93 BogoMIPS (lpj=504832)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
gpiochip_add: gpios 288..303 (GPIOK) failed to register
gpiochip_add: gpios 320..334 (GPIOL) failed to register
gpiochip_add: gpios 352..353 (GPIOM) failed to register
NET: Registered protocol family 16
MINI2440: Option string mini2440=1b
MINI2440: LCD 0:240x320 [1:800x480] 2:1024x768
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c-i2c s3c2440-i2c: slave address 0x10
s3c-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
Advanced Linux Sound Architecture Driver Version 1.0.23.
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
JFFS2 version 2.2. (NAND) �© 2001-2006 Red Hat, Inc.
ROMFS MTD (C) 2007 Red Hat, Inc.
msgmni has been set to 118
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Console: switching to colour frame buffer device 200x80
fb0: s3c2410fb frame buffer device
s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440
brd: module loaded
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 16 bytes/write
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c24xx-nand s3c2440-nand: Tacls=1, 9ns Twrph0=3 29ns, Twrph1=2 19ns
s3c24xx-nand s3c2440-nand: NAND soft ECC
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB
3,3V 8-bit)
Creating 4 MTD partitions on "nand":
0x000000000000-0x000000040000 : "u-boot"
ftl_cs: FTL header not found.
0x000000040000-0x000000060000 : "u-boot-env"
ftl_cs: FTL header not found.
0x000000060000-0x000000560000 : "kernel"
ftl_cs: FTL header not found.
0x000000560000-0x000010000000 : "root"
ftl_cs: FTL header not found.
dm9000 Ethernet Driver, V1.31
eth0: dm9000e at c486a300,c486e304 IRQ 51 MAC: 08:08:11:18:12:27 (chip)
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usbcore: registered new interface driver libusual
s3c2440-usbgadget s3c2440-usbgadget: S3C2440: increasing FIFO to 128 bytes
mousedev: PS/2 mouse device common for all mice
input: gpio-keys as /devices/platform/gpio-keys/input/input0
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq enabled
cpuidle: using governor ladder
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdi s3c2440-sdi: powered down.
s3c-sdi s3c2440-sdi: mmc0 - using pio, sw SDIO IRQ
s3c-sdi s3c2440-sdi: running at 0kHz (requested: 0kHz).
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
ALSA device list:
  No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
s3c-rtc s3c2410-rtc: setting system clock to 2011-03-23 06:01:06 UTC
(1300860066)
s3c-sdi s3c2440-sdi: running at 398kHz (requested: 400kHz).
s3c-sdi s3c2440-sdi: running at 16875kHz (requested: 25000kHz).
s3c-sdi s3c2440-sdi: running at 16875kHz (requested: 25000kHz).
mmc0: new SD card at address b368
mmcblk0: mmc0:b368 SD    970 MiB
 mmcblk0: p1 p2 p3
eth0: link down
IP-Config: Complete:
     device=eth0, addr=10.146.1.199, mask=255.255.255.0, gw=255.255.255.255,
     host=mini2440, domain=, nis-domain=(none),
     bootserver=10.146.1.21, rootserver=10.146.1.21, rootpath=
Root-NFS: nfsroot=/home/open-nandra/rootfs
NFS: nfs mount opts='udp,nolock,addr=10.146.1.21'
NFS:   parsing nfs mount option 'udp'
NFS:   parsing nfs mount option 'nolock'
NFS:   parsing nfs mount option 'addr=10.146.1.21'
NFS: MNTPATH: '/home/open-nandra/rootfs'
NFS: sending MNT request for 10.146.1.21:/home/open-nandra/rootfs
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
NFS: received 1 auth flavors
NFS:   auth flavor[0]: 1
NFS: MNT request succeeded
NFS: using auth flavor 1
VFS: Mounted root (nfs filesystem) on device 0:14.
Freeing init memory: 132K
nfs: server 10.146.1.21 not responding, still trying
nfs: server 10.146.1.21 not responding, still trying

This is behavior for commit 53d4737580535e073963b91ce87d4216e434fab5
For commit before it works properly.


regards,

marek

-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
skype: marekwhite
icq: 290551086
web: http://open-nandra.com
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