Hi, I have cloned the repo /system/extras on master branch. git clone https://android.googlesource.com/platform/system/extras && (cd extras && curl -Lo `git rev-parse --git-dir`/hooks/commit-msg https://gerrit-review.googlesource.com/tools/hooks/commit-msg ; chmod +x `git rev-parse --git-dir`/hooks/commit-msg) and git checkout git checkout 9c27970d142dc14b1e82b1d6f9fa827f994609b6 -b tmp //this means rollback to the version before make_ext4fs code was deleted on Jun 21th 2018. And copy the codes to android project, then compile, and produce the image. Like below, ./host/linux-x86/bin/make_ext4fs -s -l 20M -b 1024 gaoming.img Creating filesystem with parameters: Size: 20971520 Block size: 1024 Blocks per group: 8192 Inodes per group: 1708 Inode size: 256 Journal blocks: 1024 Label: Blocks: 20480 Block groups: 3 Reserved block group size: 95 Created filesystem with 11/5124 inodes and 2509/20480 blocks You see, Inodes per group is 1708,which is illegal as you said. So, the problem exists a long time until Jun 21th 2018. You complained the problem in 2011, they do not fix it till 2018. Just as I complained, fix it, and you do not accept it. ^_^ Regards, Ming -----邮件原件----- 发件人: Theodore Y. Ts'o [mailto:tytso@xxxxxxx] 发送时间: 2018年6月28日 10:29 收件人: Gaoming (ming, consumer BG) 抄送: linux-ext4@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Liqingchao (sorp); Shenchen (harry); miaoxie (A); yangfei (D) 主题: Re: 答复: [PATCH] ext4: e2fsprogs: fix inode bitmap num not integer,incompatible for ancient android devices On Thu, Jun 28, 2018 at 01:40:30AM +0000, Gaoming (ming, consumer BG) wrote: > Hi tytso, > > I have checked that make_ext4fs code was deleted o Jun 21th 2018 on master branch of /system/extras repository. > e.g. > https://android-review.googlesource.com/c/platform/system/extras/+/708003 Make_ext4fs was fixed not create invalid file systems a *long* time ago. What I'm not sure about is why the patch hasn't gotten out to more Android manufacters sooner. It should have been fixed by sometime in 2012 --- I complained to the Android team in early 2011. What I don't understand is why people are coming out of the woodwork *now*. - Ted