[U-Boot] ext4: crash when writing a file
Sébastien Szymanski
sebastien.szymanski at armadeus.com
Tue Nov 29 14:10:54 CET 2016
On 11/29/2016 01:14 PM, Brüns, Stefan wrote:
> On Dienstag, 29. November 2016 10:50:45 CET you wrote:
>> Hello,
>>
>> I am working on a i.MX6UL based board with a 4GB eMMC partitioned as
>> following:
>>
>> Device Boot Start End Sectors Size Id Type
>> /dev/sdb1 2048 264191 262144 128M 83 Linux
>> /dev/sdb2 264192 4458495 4194304 2G 83 Linux
>> /dev/sdb3 4458496 7634943 3176448 1.5G 83 Linux
>>
>> On the 2nd partition, I write this ext4 filesystem file generated by
>> Buildroot:
>> Filesystem volume name: "ROOTFS"
>> Last mounted on: <not available>
>> Filesystem UUID: b9833a36-e89d-429a-b120-c3b00bcb7785
>> Filesystem magic number: 0xEF53
>> Filesystem revision #: 1 (dynamic)
>> Filesystem features: has_journal dir_index filetype extent
>> sparse_super uninit_bg
>> Filesystem flags: signed_directory_hash
>> Default mount options: (none)
>> Filesystem state: clean
>> Errors behavior: Unknown (continue)
>> Filesystem OS type: Linux
>> Inode count: 3456
>> Block count: 91756
> 91756 blocks ...
>
>> Reserved block count: 4587
>> Free blocks: 13458
>> Free inodes: 488
>> First block: 1
>> Block size: 1024
> 1k each -> 91 MByte filesystem
Yes. Is there something wrong here ?
>
>> Fragment size: 1024
>> Blocks per group: 7648
>> Fragments per group: 7648
>> Inodes per group: 288
>> Inode blocks per group: 36
>> Last mount time: n/a
>> Last write time: Tue Nov 29 09:44:52 2016
>> Mount count: 0
>> Maximum mount count: -1
>> Last checked: Tue Nov 29 09:44:52 2016
>> Check interval: 0 (<none>)
>> Reserved blocks uid: 0 (user root)
>> Reserved blocks gid: 0 (group root)
>> First inode: 11
>> Inode size: 128
>> Journal inode: 8
>> Default directory hash: half_md4
>> Directory Hash Seed: a583a07f-6b59-442d-8e08-9be305f78d17
>> Journal backup: inode blocks
>>
>> This filesystem is written with the following commands:
>>
>> BIOS> setexpr nbblocks ${filesize} / 0x200
>> BIOS> setexpr nbblocks ${nbblocks} + 1
>> BIOS> mmc write ${loadaddr} 0x40800 ${nbblocks}
>> MMC write: dev # 0, block # 264192, count 183513 ... 183513 blocks
>> written: OK
>>
>> I can boot Linux with it without any issues, however if I try to write a
>> file in it I get the following crash:
>>
>> BIOS> ext4write mmc 0:2 ${loadaddr} /boot/${kernelimg} ${filesize}
>
> What are you trying to achieve here? What is the value of $filesize?
I try to update the kernel image which is /boot/opos6ul-linux.bin. I
download it from a tftp server so $filesize is the size of the kernel image
BIOS> printenv filesize
filesize=518f68
>
> Btw, which u-boot version are you using?
I first noticed the issue on U-Boot 2016.05 so I rebase on master from
http://git.denx.de/u-boot.git
Regards,
>
> Regards,
>
> Stefan
>
--
Sébastien Szymanski
Software Engineer, Armadeus Systems
sebastien.szymanski at armadeus.com
Tel: +33 (0)9 72 29 41 44
Fax: +33 (0)9 72 28 79 26
More information about the U-Boot
mailing list