本文共 1828 字，大约阅读时间需要 6 分钟。

替换了out/target/product里面system里面的很多文件，本来想make snod重打包img

error: ext4_allocate_best_fit_partial: failed to allocate 302 blocks, out of space?error: failed to build out/target/product/generic_x86/system.img from out/target/product/generic_x86/systemOut of space? the tree size of out/target/product/generic_x86/system is (MB): 727	out/target/product/generic_x86/systemThe max is 750 MB.make: *** [snod] Error 1#### make failed to build some targets (1 seconds) ####

网上百度谷歌搜了很多，都说简单修改 system执行的大小就可以，但我重新source lunch make snod 还是一样的结果。

最后通过阅读 /build/core/Makefile文件发现。makesnod 命令是通过/build/tools/releasetools/build_image.py

生成的。 这个命令在源码编译的环境下需要三个参数。 参数一：system目录（就是手机里面system目录里面所有的文件） 参数二： 一个配置文件system_image_info.txt 这个环境变量是根据源码的环境变量设置的 大概位置out/target/product/generic_x86/obj/PACKAGING/systemimage_intermediates/system_image_info.txt 参数三：指定需要生成的文件 我们这里是system.img

将build_image.py system_image_info.txt文件放在源码根目录

修改system_image_info.txt

fs_type=ext4system_size=802897920   #这里可以改成你需要的system大小userdata_size=576716800cache_fs_type=ext4cache_size=69206016selinux_fc=out/target/product/generic_x86/root/file_contextsskip_fsck=true

执行

python build_image.py out/target/product/generic_x86/system/ system_image_info.txt system.img

Running:  mkuserimg.sh out/target/product/generic_x86/system/ system.img ext4 system 802897920 out/target/product/generic_x86/root/file_contextsmake_ext4fs -T -1 -S out/target/product/generic_x86/root/file_contexts -l 802897920 -a system system.img out/target/product/generic_x86/system/Creating filesystem with parameters:    Size: 802897920    Block size: 4096    Blocks per group: 32768    Inodes per group: 8176    Inode size: 256    Journal blocks: 3062    Label:     Blocks: 196020    Block groups: 6    Reserved block group size: 47Created filesystem with 1462/49056 inodes and 130536/196020 blocks

成功。

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