Control: block 823020 by 823500 Control: tags 823500 confirmed On 2016-05-05, Heinrich Schuchardt wrote: > u-boot-imx fails to read file > /dtbs/4.5.0-1-armmp/imx6q-wandboard-revb1.dtb > from an ext4 partition though the file exists. > > lsext4 mmc 0 dtbs > does not show the subdirectories in the directory dtbs.
Thanks for the report! I've seen similar behavior on a wandboard and novena. Was this partition created with debian-installer? In my experience debugging this issue, an ext4 partition created with mkfs.ext4 from stretch works fine. Reported the issue here, since I could only trigger it with debian-installer: https://bugs.debian.org/823020 > Booting from ext2 is possible with the same partition content. But of > cause it would be preferable to have a journaling file system. Marex was kind enough to help debug this issue; the problem may be the flex_bg filesystem feature: < Marex> vagrantc: I _think_ flexbg is what breaks the ext4 for you < Marex> vagrantc: u-boot does not support flex_bg (mkfs.ext4 -G option) < vagrantc> Marex: flex_bg, eh? < Marex> vagrantc: yeah, flexible block group < Marex> vagrantc: try without it < Marex> vagrantc: flexible BG packs multiple block bitmaps at the beginning of the block supergroup instead of having one bitmap per block, it improves locality, but uboot doesn't support it < Marex> vagrantc: and I think there is about zero performance gain from having this enabled for DI Although I *thought* I also saw a filesystem with flex_bg that worked fine... so I'm not 100% sure at this point. I haven't had time to follow up on the issue, but hope to be able to further this coming week. Any further troubleshooting would be really helpful! live well, vagrant
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