2010-02-24 03:06:15     cramfs : mount failure

2010-02-24 03:06:15     cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 86419   

Hi,

Am trying to use cramfs file system for my flash in BF527 board.

Enabled cramfs support in File Systems->Miscellaneous filesystems->Compressed ROM file system support (cramfs)

Also enable mkcramfs utility in File System Applications.

Am facing following problems, Not able to identify its a configuration issue or cramfs utility issue. Please let us know if there are any problems in my configuartion

1) Mount failure

mount -t cramfs /dev/mtdblock2 /mnt/test

mount: mounting /dev/mtdblock2 on /mnt/test failed: Invalid argument

2) cramfs image creation results in crash

mkcramfs mycramfs mycramfs.cramfs

Log attached below,

## Booting kernel from Legacy Image at 02000000 ...

   Image Name:   Linux-2.6.28.10-ADI-2009R1

   Created:      2010-02-23  10:29:08 UTC

   Image Type:   Blackfin Linux Kernel Image (gzip compressed)

   Data Size:    6360001 Bytes =  6.1 MB

   Load Address: 00180000

   Entry Point:  0040cd74

   Verifying Checksum ... OK

   Uncompressing Kernel Image ... OK

Starting Kernel at = 0040cd74

Linux version 2.6.28.10-ADI-2009R1 (santhosh@host_120) (gcc version 4.1.2 (ADI svn)) #742 Tue Feb 23 15:58:54 IST 2010

Board Memory: 128MB

Kernel Managed Memory: 128MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00180000-0x002a4570

  rodata    = 0x002a4570-0x0038b074

  bss       = 0x0038c000-0x003e95b4

  data      = 0x003e95b4-0x00400000

    stack   = 0x003fe000-0x00400000

  init      = 0x00400000-0x00dfc000

  available = 0x00dfc000-0x07fff000

Hardware Trace Active and Enabled

Boot Mode: 1

Blackfin support (C) 2004-2009 Analog Devices, Inc.

Compiled for ADSP-BF527 Rev 0.2

Blackfin Linux support by   blackfin.uclinux.org/

Processor Speed: 600 MHz core clock and 120 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

Data Cache Enabled for CPU0 (write-back)

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 32511

Kernel command line: console=ttyBF1,57600

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 512 (order: 9, 2048 bytes)

Console: colour dummy device 80x25

console [ttyBF1] enabled

Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)

Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)

Memory available: 115616k/131072k RAM, (10224k init code, 1169k kernel code, 1391k data, 0k dma, 2668k reserved)

Calibrating delay loop... 1187.84 BogoMIPS (lpj=593920)

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (6 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 48 KB (38 KB free)

net_namespace: 288 bytes

NET: Registered protocol family 16

Blackfin DMA Controller

ezkit_init(): registering device resources

SCSI subsystem initialized

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 4096 (order: 3, 32768 bytes)

TCP bind hash table entries: 4096 (order: 2, 16384 bytes)

TCP: Hash tables configured (established 4096 bind 4096)

TCP reno registered

NET: Registered protocol family 1

JFFS2 version 2.2. (NAND) Copyright 2001-2006 Red Hat, Inc.

msgmni has been set to 225

io scheduler noop registered (default)

CHIMEI LCD Driver Initialised

adau1361 register major 246

/* Flash Driver */

--------------------

Numonyx Flash device

Top Boot M58LT128HS Flash device

Flash Size : 16MB

Single Core  Loader Module enabled

mci900_pwm /dev entries driver

mci900_pwm driver initialized successfully

mci900_ad7999 /dev entries driver

mci900_ad7999 driver initialized successfully

bfin-otp: initialized

Serial: Blackfin serial driver

bfin-uart.1: ttyBF0 at MMIO 0xffc00400 (irq = 29) is a BFIN-UART

bfin-uart.1: ttyBF1 at MMIO 0xffc02000 (irq = 31) is a BFIN-UART

brd: module loaded

bfin_mii_bus: probed

bfin_mac: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=23)@sclk=120MHz)

bfin_mac bfin_mac.0: Blackfin on-chip Ethernet MAC driver, Version 1.1

Driver 'sd' needs updating - please use bus_type methods

gpio-latch-addr-flash: probing 16-bit flash bus

gpio-latch-addr-flash: Found 1 x16 devices at 0x0 in 16-bit bank

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Using buffer write method

cfi_cmdset_0001: Erase suspend on write enabled

cmdlinepart partition parsing not available

RedBoot partition parsing not available

gpio-latch-addr-flash: Using board partition definition

Creating 5 MTD partitions on "gpio-latch-addr-flash":

0x00000000-0x00040000 : "UBoot Bootloader"

0x00040000-0x000a0000 : "VDSP Fallback Binary"

0x000a0000-0x00800000 : "NP Kernel+App Binary"

0x00800000-0x00f80000 : "Persistent Storage through MTD"

0x00f80000-0x01000000 : "Persistent Storage custom driver"

r8a66597_hcd: driver r8a66597_hcd, 10 Apr 2008

r8a66597_hcd r8a66597_hcd: USB Host Controller

r8a66597_hcd r8a66597_hcd: new USB bus registered, assigned bus number 1

r8a66597_hcd r8a66597_hcd: irq 99, io base 0x20100000

usb usb1: configuration #1 chosen from 1 choice

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 2 ports detected

usb usb1: New USB device found, idVendor=1d6b, idProduct=0002

usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

usb usb1: Product: USB Host Controller

usb usb1: Manufacturer: Linux 2.6.28.10-ADI-2009R1 r8a66597_hcd

usb usb1: SerialNumber: r8a66597_hcd

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

usbcore: registered new interface driver libusual

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

i2c /dev entries driver

i2c-bfin-twi i2c-bfin-twi.0: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc01400

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 2008-04-01 07:29:05 UTC (1207034945)

Freeing unused kernel memory: 10224k freed

usb 1-1: new high speed USB device using r8a66597_hcd and address 2

usb 1-1: configuration #1 chosen from 1 choice

usb 1-1: New USB device found, idVendor=148f, idProduct=2770

usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3

usb 1-1: Product: 802.11 n WLAN

usb 1-1: Manufacturer: Ralink

usb 1-1: SerialNumber: 1.0

                           _____________________________________

        a8888b.           / Welcome to the uClinux distribution \

       d888888b.         /       _     _                         \

       8P"YP"Y88        /       | |   |_|            __  __ (TM)  |

       8|o||o|88  _____/        | |    _ ____  _   _ \ \/ /       |

       8'    .88       \        | |   | |  _ \| | | | \  /        |

       8`._.' Y8.       \       | |__ | | | | | |_| | /  \        |

      d/      `8b.       \      \____||_|_| |_|\____|/_/\_\       |

     dP   .    Y8b.       \   For embedded processors including   |

    d8:'  "  `::88b        \    the Analog Devices Blackfin      /

   d8"         'Y88b        \___________________________________/

  :8P    '      :888

   8a.   :     _a88P         For further information, check out:

._/"Yaa_:   .| 88P|            -   blackfin.uclinux.org/

\    YP"    `| 8P  `.          -   docs.blackfin.uclinux.org/

/     \.___.d|    .'           -   www.uclinux.org/

`--..__)8888P`._.'  jgs/a:f    -   www.analog.com/blackfin

Have a lot of fun...

insmod: cannot insert 'rt2870sta.ko': unknown symbol in module, or unknown parameter

cp: cannot stat '/smb.conf': No such file or directory

chmod: /etc/config/inetd.conf: No such file or directory

chmod: Philips_NP: No such file or directory

./Philips_NP: not found

BusyBox v1.13.4 (2010-02-23 15:52:39 IST) built-in shell (msh)

Enter 'help' for a list of built-in commands.

root:/> Netbios nameserver version 3.0.25a started.

Copyright Andrew Tridgell and the Samba Team 1992-2007

standard input is not a socket, assuming -D option

create_subnets: No local interfaces !

create_subnets: Waiting for an interface to appear ...

root:/>

root:/> ifconfig eth0 10.142.14.146

root:/> PHY: 0:01 - Link is Up - 100/Half

root:/> tftp -g -r rootfs.cramfs 10.142.14.126

root:/>

root:/>

root:/> mkdir /mnt/cramfs_test

root:/> flash_unlock /dev/mtd2

root:/> flash_eraseall -j /dev/mtd2

Erasing 128 Kibyte @ 760000 -- 100 % complete.Cleanmarker written at 740000.

root:/> dd if=rootfs.cramfs of=/dev/mtd2

10920+0 records in

10920+0 records out

root:/> mount -t cramfs /dev/mtdblock2 /mnt

mount: mounting /dev/mtdblock2 on /mnt failed: Invalid argument

root:/> mount -t cramfs /dev/mtdblock2/ /mnt

mount: mounting /dev/mtdblock2/ on /mnt failed: Not a directory

root:/> mkdir /mnt/test

root:/> mount -t cramfs /dev/mtdblock2 /mnt/test

mount: mounting /dev/mtdblock2 on /mnt/test failed: Invalid argument

root:/> mount

rootfs on / type rootfs (rw)

proc on /proc type proc (rw,nosuid,nodev,noexec)

sysfs on /sys type sysfs (rw,nosuid,nodev,noexec)

mdev on /dev type tmpfs (rw,nosuid)

devpts on /dev/pts type devpts (rw,nosuid,noexec,mode=600)

var on /var type ramfs (rw)

tmp on /tmp type tmpfs (rw,nosuid,nodev)

usbfs on /proc/bus/usb type usbfs (rw)

debugfs on /sys/kernel/debug type debugfs (rw)

root:/> mount -help

mount: invalid option -- h

BusyBox v1.13.4 (2010-02-23 15:52:39 IST) multi-call binary

Usage: mount [flags] DEVICE NODE [-o options,more-options]

Mount a filesystem. Filesystem autodetection requires /proc be mounted.

Options:

        -a              Mount all filesystems in fstab

        -r              Read-only mount

        -t fs-type      Filesystem type

        -w              Read-write mount (default)

-o option:

        loop            Ignored (loop devices are autodetected)

        [a]sync         Writes are asynchronous / synchronous

        [no]atime       Disable / enable updates to inode access times

        [no]diratime    Disable / enable atime updates to directories

        [no]relatime    Disable / enable atime updates relative to modification time

        [no]dev         Allow use of special device files / disallow them

        [no]exec        Allow use of executable files / disallow them

        [no]suid        Allow set-user-id-root programs / disallow them

        [r]shared       Convert [recursively] to a shared subtree

        [r]slave        Convert [recursively] to a slave subtree

        [r]private      Convert [recursively] to a private subtree

        [un]bindable    Make mount point [un]able to be bind mounted

        bind            Bind a directory to an additional location

        move            Relocate an existing mount point

        remount         Remount a mounted filesystem, changing its flags

        ro/rw           Mount for read-only / read-write

There are EVEN MORE flags that are specific to each filesystem

You'll have to see the written documentation for those filesystems

root:/>

root:/>

root:/>

root:/> mkdir mycramfs

root:/> cd mycramfs/

root:/mycramfs> vi 1.txt

Testing cramfs

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

root:/mycramfs> cd ..

root:/> mkcramfs mycramfs mycramfs.cramfs

mkInstruction fetch misaligned address violation

- Attempted misaligned instruction cache fetch.

Deferred Exception context

CURRENT PROCESS:

COMM=mkcramfs PID=345

CPU = 0

TEXT = 0x00460040-0x0046cca0        DATA = 0x0046ccc0-0x00471a1c

BSS = 0x00471a1c-0x00471d20  USER-STACK = 0x00472f60

return address: [0x00468638]; contents of:

0x00468610:  3007  0062  e140  0047  e14a  0046  e10a  8e00

0x00468620:  e100  19d0  0062  e14a  0047  e10a  1cb4  9152

0x00468630:  0c42  1804  0000  3006 [0062] e14a  0046  e10a

0x00468640:  8e10  3007  6009  0062  e300  03aa  e14a  0046

ADSP-BF527-0.2 600(MHz CCLK) 120(MHz SCLK) (mpu off)

Linux version 2.6.28.10-ADI-2009R1

Built with gcc version 4.1.2 (ADI svn)

SEQUENCER STATUS:               Not tainted

SEQSTAT: 0006002a  IPEND: 0030  SYSCFG: 0006

  EXCAUSE   : 0x2a

  interrupts disabled

  physical IVG5 asserted : <0xffa00b78> { _evt_ivhw + 0x0 }

RETE: <0x00000000> /* Maybe null pointer? */

RETN: <0x00444000> /* kernel dynamic memory */

RETX: <0x00000480> /* Maybe fixed code section */

RETS: <0x00468626> [ mkcramfs + 0x85e6 ]

PC  : <0x00468638> [ mkcramfs + 0x85f8 ]

DCPLB_FAULT_ADDR: <0x00471cb4> [ mkcramfs + 0x11cb4 ]

ICPLB_FAULT_ADDR: <0x00468638> [ mkcramfs + 0x85f8 ]

PROCESSOR STATE:

R0 : 00000008    R1 : 00468e00    R2 : 004719d0    R3 : 00472c3c

R4 : 00000003    R5 : 00000034    R6 : 00000008    R7 : 00472d08

P0 : 00000004    P1 : 00000000    P2 : 00000569    P3 : 00472eb0

P4 : 00000002    P5 : 004719e8    FP : 00472d18    SP : 00443f24

LB0: 004677d9    LT0: 004677d8    LC0: 00000000

LB1: 00466abd    LT1: 00466abc    LC1: 00000000

B0 : 00000000    L0 : 00000000    M0 : 00000000    I0 : 0044a054

B1 : 00000000    L1 : 00000000    M1 : 00000000    I1 : 00000000

B2 : 00000000    L2 : 00000000    M2 : 00000000    I2 : 00000000

B3 : 00000000    L3 : 00000000    M3 : 00000000    I3 : 00000000

A0.w: 00000000   A0.x: 00000000   A1.w: 00000000   A1.x: 00000000

USP : 00472cfc  ASTAT: 02003004

Hardware Trace:

   0 Target : <0x00183914> { _trap_c + 0x0 }

     Source : <0xffa005d2> { _exception_to_level5 + 0x9e } CALL pcrel

   1 Target : <0xffa00534> { _exception_to_level5 + 0x0 }

     Source : <0xffa00414> { _bfin_return_from_exception + 0x18 } RTX

   2 Target : <0xffa003fc> { _bfin_return_from_exception + 0x0 }

     Source : <0xffa0048a> { _ex_trap_c + 0x46 } JUMP.S

   3 Target : <0xffa00444> { _ex_trap_c + 0x0 }

     Source : <0xffa0069c> { _trap + 0x58 } JUMP (P4)

   4 Target : <0xffa00644> { _trap + 0x0 }

     Source : <0x00468636> [ mkcramfs + 0x85f6 ] 0x3006

   5 Target : <0x00468626> [ mkcramfs + 0x85e6 ]

     Source : <0x00468e0c> [ mkcramfs + 0x8dcc ] RTS

   6 Target : <0x00468e00> [ mkcramfs + 0x8dc0 ]

     Source : <0x00468624> [ mkcramfs + 0x85e4 ] CALL (P2)

   7 Target : <0x00468614> [ mkcramfs + 0x85d4 ]

     Source : <0x00468e1c> [ mkcramfs + 0x8ddc ] RTS

   8 Target : <0x00468e10> [ mkcramfs + 0x8dd0 ]

     Source : <0x00468612> [ mkcramfs + 0x85d2 ] CALL (P2)

   9 Target : <0x004685ec> [ mkcramfs + 0x85ac ]

     Source : <0x004603fc> [ mkcramfs + 0x3bc ] CALL pcrel

  10 Target : <0x004603fa> [ mkcramfs + 0x3ba ]

     Source : <0x00460408> [ mkcramfs + 0x3c8 ] JUMP.S

  11 Target : <0x00460408> [ mkcramfs + 0x3c8 ]

     Source : <0x004675b6> [ mkcramfs + 0x7576 ] RTS

  12 Target : <0x004675ae> [ mkcramfs + 0x756e ]

     Source : <0x00467604> [ mkcramfs + 0x75c4 ] JUMP.S

  13 Target : <0x004675fe> [ mkcramfs + 0x75be ]

     Source : <0x004695a6> [ mkcramfs + 0x9566 ] RTS

  14 Target : <0x0046959e> [ mkcramfs + 0x955e ]

     Source : <0x0046953c> [ mkcramfs + 0x94fc ] IF !CC JUMP

  15 Target : <0x00469538> [ mkcramfs + 0x94f8 ]

     Source : <0x00469558> [ mkcramfs + 0x9518 ] IF CC JUMP

Userspace Stack

Stack info:

SP: [0x00472cfc] <0x00472cfc> [ mkcramfs + 0x12cfc ]

FP: (0x00472cec)

Memory from 0x00472cf0 to 00473000

00472cf0:<004675fe> 00472d18 <00468626>[0000000a] 00000001  00000034 <00467f2c> 00472d38

00472d10:<004603d6> 0a4719e8  00472d38 <00460400> 00000000  00000001  00001000  00000008

00472d30: 00472d4c  00472d44  00472d4c <004608f6> 38cda040  00000000  00000003  00472ddc

00472d50:<00460c64> 00000005  0043f1bf  0043f004 <0046b0bc> 00472dd8  00000000  004602cc

00472d70: 00000000  0043f00d  00000001  00000000  00000000  0000056a  000081a4  00000001

00472d90: 00000000  00000000  00000000  00000000  00000000  00000010  00000000  00001000

00472db0: 00000008  00000000  47f1e76b  00000000  47f1e76b  00000000  47f1e76b  00000000

00472dd0: 0000056a  00000000  0043f148  00472ef0 <00460fd8> 004719e8  00472eb0  00000000

00472df0:<00472f92> 00472f9b  00472f64  00000003  004718d4  00000000  00471900  00472eb0

00472e10: 00000000  00000000  00000000  00000000  00000000  00000000  00000000  00000000

00472e30: 00000000  004718d4  00000000  00000003  00000000  00000001  00000000  00000000

00472e50: 00000569  000041ed  00000002  00000000  00000000  00000000  00000000  00000000

00472e70: 00000000  00000000  00001000  00000000  00000000  47f1e756  00000000  47f1e76b

00472e90: 00000000  47f1e76b  00000000  00000569  00000000  00000000  00000500  00000005

00472eb0: 0000004c  00000000  081c0300  01000415  1a131100  170f1200  00000016  00000000

00472ed0: 00000000  00000000  00000000  00000000  00000000  00472f04 <0046b07c> 0000002f

00472ef0: 00472f20 <00468f9c> 0046ccc0  00471a18  00472f64  00000000  00471ce4  0046cc70

00472f10: 00000003  00000000  00000000  00000000  00000000 <00d20538> 0046ccc0  00dd0004

00472f30: 00da0220  00000000  00da07bc  00da02c4  00000001  00460ee0  00000000  00000000

00472f50: 0046cc70  0046cc82  00000000  00dd0783  00000003  00472f89 <00472f92> 00472f9b

00472f70: 00000000  00472fab  00472fb2  00472fc0  00472fe3  00000000  636b6d00  666d6172

00472f90: 796d0073  6d617263  6d007366  61726379  2e73666d  6d617263  48007366  3d454d4f

00472fb0: 4853002f  3d4c4c45  6e69622f  0068732f  48544150  69622f3d  752f3a6e  622f7273

00472fd0: 2f3a6e69  6e696273  73752f3a  62732f72  54006e69  3d4d5245  756e696c  622f0078

00472ff0: 6d2f6e69  6172636b  0073666d  00000000  67c0bbd1

Return addresses in stack:

    address : <0x004675fe> [ mkcramfs + 0x75be ]

    address : <0x00468626> [ mkcramfs + 0x85e6 ]

    address : <0x00467f2c> [ mkcramfs + 0x7eec ]

    address : <0x004603d6> [ mkcramfs + 0x396 ]

    address : <0x00460400> [ mkcramfs + 0x3c0 ]

    address : <0x004608f6> [ mkcramfs + 0x8b6 ]

    address : <0x00460c64> [ mkcramfs + 0xc24 ]

    address : <0x0046b0bc> [ mkcramfs + 0xb07c ]

    address : <0x00460fd8> [ mkcramfs + 0xf98 ]

    address : <0x00472f92> [ mkcramfs + 0x12f92 ]

    address : <0x0046b07c> [ mkcramfs + 0xb03c ]

    address : <0x00468f9c> [ mkcramfs + 0x8f5c ]

    address : <0x00d20538> [ sh + 0x20538 ]

    address : <0x00472f92> [ mkcramfs + 0x12f92 ]

cramfs: memory exhausted

Bus error

root:/> free

              total         used         free       shared      buffers

  Mem:       125840        19640       106200            0            0

QuoteReplyEditDelete

2010-02-24 08:15:27     Re: cramfs : mount failure

Mike Frysinger (UNITED STATES)

Message: 86451   

it doesnt make sense to create cramfs images on the board.  do it on the host and copy the image over to the board.

QuoteReplyEditDelete

2010-02-25 07:16:00     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 86537   

Ok Mike. I tried cramfs image created at the host side too(rootfs.cramfs) and mounted the same.

Mount fails.

root:/> chmod 777 rootfs.cramfs

root:/>

root:/> ls

bin            home           mnt            rootfs.cramfs  tmp

dev            init           proc           sbin           usr

etc            lib            root           sys            var

root:/> dd if=rootfs.cramfs of=/dev/mtd2

10920+0 records in

10920+0 records out

root:/> ls /dev/mtd*

/dev/mtd0       /dev/mtd1ro     /dev/mtd3       /dev/mtd4ro     /dev/mtdblock2

/dev/mtd0ro     /dev/mtd2       /dev/mtd3ro     /dev/mtdblock0  /dev/mtdblock3

/dev/mtd1       /dev/mtd2ro     /dev/mtd4       /dev/mtdblock1  /dev/mtdblock4

root:/> cat /proc/iomem

20000000-200fffff : cfi_probe

20100000-20100100 : r8a66597_hcd

ffc00400-ffc004ff : bfin-uart.1

ffc01400-ffc01400 : i2c-bfin-twi.0

ffc02000-ffc020ff : bfin-uart.1

root:/> mkdir /mnt/test_cramfs

root:/> mount -t cramfs /dev/mtdblock2 /mnt/test_cramfs

mount: mounting /dev/mtdblock2 on /mnt/test_cramfs failed: Invalid argument

QuoteReplyEditDelete

2010-02-25 21:54:18     Re: cramfs : mount failure

Sonic Zhang (CHINA)

Message: 86562   

Did you enabled the cramfs support in your kernel configuration?

How did you build the rootfs.cramfs on your host?

QuoteReplyEditDelete

2010-02-26 02:08:00     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 86568   

Yes, enabled through menuconfig

Enabled cramfs support in File Systems->Miscellaneous filesystems->Compressed ROM file system support (cramfs)

Also enabled mkcramfs utility in File System Applications.

QuoteReplyEditDelete

2010-02-28 14:19:10     Re: cramfs : mount failure

Mike Frysinger (UNITED STATES)

Message: 86643   

you write files to mtdblock#, not to mtd#

read `dmesg` to see if there is anything useful and verify that /proc/filesystems lists cramfs

QuoteReplyEditDelete

2010-03-03 02:28:19     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 86739   

But cramfs requires block device, so i used mtdblock#.

Also /proc/filesystems list cramfs, but without any physical device association.

dmesg not giving any usefull info for mount failure.

root:/> cat /proc/filesystems

nodev   sysfs

nodev   rootfs

nodev   bdev

nodev   proc

nodev   debugfs

nodev   sockfs

nodev   usbfs

nodev   pipefs

nodev   anon_inodefs

nodev   tmpfs

nodev   inotifyfs

nodev   devpts

              cramfs

nodev   ramfs

nodev   jffs2

root:/> flash_unlock /dev/mtd2

root:/> flash_eraseall -j /dev/mtd2

Erasing 128 Kibyte @ 760000 -- 100 % complete.Cleanmarker written at 740000.

root:/> ifconfig eth0 10.142.14.146

root:/> PHY: 0:01 - Link is Up - 100/Half

root:/> tftp -g -r rootfs.cramfs 10.142.14.126

root:/> ls

bin            home           mnt            rootfs.cramfs  tmp

dev            init           proc           sbin           usr

etc            lib            root           sys            var

root:/> chmod 777 rootfs.cramfs

root:/> dd if=rootfs.cramfs of=/dev/mtd2

10920+0 records in

10920+0 records out

root:/> mount -t cramfs /dev/mtd2 /mnt

mount: mounting /dev/mtd2 on /mnt failed: Block device required

root:/> mount -t cramfs /dev/mtdblock2 /mnt

mount: mounting /dev/mtdblock2 on /mnt failed: Invalid argument

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2010-03-09 02:43:08     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 86966   

Any suggestion for this mount failure ?

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2010-03-10 04:09:59     Re: cramfs : mount failure

Sonic Zhang (CHINA)

Message: 87036   

Could you please try a loop mount to your cramfs image in your ramfs?

root/> mount -t cramfs -o loop=/dev/loop your_cramfs_img /mnt

What's the result?

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2010-03-10 06:56:50     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 87039   

Hi Sonic,

Tried the same, different error shown

root:/> ls

bin            home           mnt            rootfs.cramfs  tmp

dev            init           proc           sbin           usr

etc            lib            root           sys            var

root:/> mount -t cramfs -o loop=/dev/loop rootfs.cramfs /mnt

mount: cannot setup loop device: No such file or directory

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2010-03-10 09:05:09     Re: cramfs : mount failure

Mike Frysinger (UNITED STATES)

Message: 87045   

things mount fine for me:

root:/> grep cramfs /proc/filesystems

        cramfs

root:/> mount -o loop /rootfs.cramfs /mnt/

root:/> ls /mnt/

bin   dev   etc   home  lib   mnt   proc  root  sbin  sys   tmp   usr   var

root:/> grep cramfs /proc/mounts

/dev/loop0 /mnt cramfs ro,relatime 0 0

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2010-03-10 22:06:05     Re: cramfs : mount failure

Sonic Zhang (CHINA)

Message: 87065   

You need to enable loop device option in your kernel configure.

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2010-03-11 07:53:17     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 87093   

Hi Sonic,

Thanks, after enabling loop device option cramfs image mounts successfully.

But if the same image written to one of my MTD partition, and if mounted "Invalid argument error " shown

root:/> cat /proc/mtd

dev:    size   erasesize  name

mtd0: 00040000 00020000 "UBoot Bootloader"

mtd1: 00060000 00020000 "VDSP Fallback Binary"

mtd2: 00760000 00020000 "NP Kernel+App Binary"

mtd3: 00780000 00020000 "Persistent Storage through MTD"

mtd4: 00080000 00020000 "Persistent Storage custom driver"

root:/> flash_unlock /dev/mtd2

root:/> flash_eraseall -j /dev/mtd2

Erasing 128 Kibyte @ 760000 -- 100 % complete.Cleanmarker written at 740000.

root:/>

root:/>

root:/> dd if=rootfs.cramfs of=/dev/mtd2

10920+0 records in

10920+0 records out

root:/> mount -t cramfs -o loop=/dev/loop /dev/mtdblock2 /mnt

mount: mounting /dev/mtdblock2 on /mnt failed: Invalid argument

root:/> mount -t cramfs -o loop=/dev/loop /dev/mtd2 /mnt

mount: mounting /dev/mtd2 on /mnt failed: Block device required

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2010-03-11 11:20:34     Re: cramfs : mount failure

Mike Frysinger (UNITED STATES)

Message: 87100   

you've already been told how to handle the mtd layers.  if you cant follow directions, then there isnt anything we can do to help.

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2010-03-15 03:33:44     Re: cramfs : mount failure

Santhosh Kumar (INDIA)

Message: 87204   

Mike

Now I have written my cramfs image to mtdblock2 and mounted using the same that, mount is successfull and i am able to see the contents.

I went through mtd home page, and it says mtdblock emulates block devices over mtd devices

But the same thing works fine for an JFFS2 image, ie

dd if=rootfs.jffs2 of=/dev/mtd2

mount -t jffs2 /dev/mtdblock2 /mnt , works fine and i am able to read/write in this partition.

Thought i dont know how writing to a mtd device and mount the same using its block driver(mtdblock) works for JFFS2

But the same not working for cramfs.

Please let me know if you have any pointers for better understanding of the same.

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