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:floppy_disk: Flash Translation Layer Emulator for Linux

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flashbench
========
SSD firmware emulator for Linux, developed by Seoul National University,
[CARES] Lab.

### Requirements
- [rustup](https://rustup.rs/)
- Linux 4.9.0
- AMD64 CPU

```bash
# Install Rust nightly compiler and download Rust source codes
rustup toolchain install nightly
rustup +nightly component add rust-src
# Install prerequisites
sudo apt-get install make linux-headers-4.9.0-12-amd64

# Build
make -j

# Start flashbench, check `dmesg`
sudo insmod flashbench.ko
# Format the created virtual SSD
sudo mkfs -t ext4 -b 4096 /dev/fbSSD
# Mount the virtual SSD
sudo mkdir -p /vSSD
sudo mount -o discard /dev/fbSSD /vSSD
# Check the status of the virtual SSD
cat /proc/flashbench

# If you want to clear the cache: https://www.kernel.org/doc/Documentation/sysctl/vm.txt
echo 3 | sudo tee /proc/sys/vm/drop_caches
# Infinitely clear the cache
while :; do echo 3 | sudo tee /proc/sys/vm/drop_caches; sleep 1; done

# Unmount the virtual SSD
sudo umount /dev/fbSSD
sudo rmdir /vSSD
# End flashbench
sudo rmmod flashbench

# Static analysis with sparse
sudo apt-get install sparse
make -j C=2
# Static analysis with clang-tidy
sudo apt-get install bear clang-tidy
bear make -j && run-clang-tidy-3.8.py
```

&nbsp;

--------

*flashbench* is distributed under the terms of the [GNU General Public License
v2.0] or any later version. See [COPYRIGHT] for details.

[CARES]: http://davinci.snu.ac.kr
[GNU General Public License v2.0]: LICENSE
[COPYRIGHT]: COPYRIGHT

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