can this error could be ignored? is lwext4 port somhow usable in general on 21.11?
Increasing a file via truncation is not supported by this version of the lwext4 library (I have not checked if this is addressed upstream by now). If your use-case depends on this feature, e.g. sparse files, 'lwext4_fs' cannot be used (also, 'cp(1)' from coreutils assumes it may use lseek/ftruncate to prevent unncessary I/O which will not work either).
not sure - I just consider it as a base for compilation. it includes a lot of different apps manipulating files (gcc/cc1/cpp/as/ls/objcopy/ar…)
*Iff* you are fine with debugging problems that arise from using it I suggest you rather take a look at 'vfs/lwext4' [1] as starting point because most file-system servers besides the 'vfs' component are on their way out.
thanks! will try…
Sincerely, Alexander