commit | b853870db92b087584b2e904e8846f9832916e27 | [log] [tgz] |
---|---|---|
author | Ashish Bijlani <ashish.bijlani@gmail.com> | Tue Sep 08 22:51:27 2020 -0500 |
committer | Ashish Bijlani <ashish.bijlani@gmail.com> | Tue Sep 08 22:51:27 2020 -0500 |
tree | ffedb55227949e44978d045390cf252e15450b4e | |
parent | 2fbf37608be28269f2597cb148f1d8a03d78d834 [diff] | |
parent | 18291ef49fba78354341f774f9754d66d4d32852 [diff] |
Merge branch 'master' of https://github.com/extfuse/extfuse
We have modifed the FUSE driver to support ExtFUSE feature. Therefore, you will have to install and run a our modified kernel. To clone the kernel sources do:
$ git clone --branch ExtFUSE-1.0 https://github.com/extfuse/linux $ cd linux $ make menuconfig --> General setup [*] Enable bpf() system call --> File systems <*> FUSE (Filesystem in Userspace) support [*] Extension framework for FUSE $ make -j4 $ sudo make install -j4 $ make headers_install
In menuconfig step, DO NOT select FUSE as a kernel module as it will cause the kernel compilation to fail; instead, build FUSE into the kernel.
Boot into the new kernel. Clone ExtFUSE library sources and build. Export the path to repo as EXTFUSE_REPO_PATH. You will need LLVM/Clang toolchain to build.
$ git clone https://github.com/extfuse/extfuse $ cd extfuse $ export EXTFUSE_REPO_PATH=$(pwd) $ LLC=llc-3.8 CLANG=clang-3.8 make
The eBPF code for handling FUSE requests in the kernel can be found in bpf/extfuse.c
. Once you build the library, compiled eBPF bytecode can be found in src/extfuse.o
.
Finally, you will also need a modified FUSE library. To clone its source repo:
$ git clone --branch ExtFUSE-1.0 https://github.com/extfuse/libfuse
Follow instructions here to build libfuse. NOTE that you will need to run ./makeconf.sh
to create the configure
script.
You can test ExtFUSE functionality with a simple stackable FUSE file system here. NOTE that you will need to copy $EXTFUSE_REPO_PATH/src/extfuse.o
to /tmp
before you test StackFS because the name and path is hard-coded in StackFS_LL.c
.
$ git clone https://github.com/ashishbijlani/StackFS $ cd StackFS $ make $ cp $EXTFUSE_REPO_PATH/bpf/extfuse.o /tmp/. $ sudo sh -c "LD_LIBRARY_PATH=$EXTFUSE_REPO_PATH ./StackFS_ll -o max_write=131072 -o writeback_cache -o splice_read -o splice_write -o splice_move -r $ROOT_DIR $MNT_DIR -o allow_other"
If you use this work for your research, we would deep appreciate a citation to our USENIX ATC '19 Paper
@inproceedings {234870, author = {Ashish Bijlani and Umakishore Ramachandran}, title = {Extension Framework for File Systems in User space}, booktitle = {2019 {USENIX} Annual Technical Conference ({USENIX} {ATC} 19)}, year = {2019}, isbn = {978-1-939133-03-8}, address = {Renton, WA}, pages = {121--134}, url = {https://www.usenix.org/conference/atc19/presentation/bijlani}, publisher = {{USENIX} Association}, }