A block device cache in userspace
Project description
🧊 blkcache
Userspace transparent block device cache.
⬇️ Deps
sudo apt install libnbd-bin nbdkit-plugin-python nbdfuse fuse3
ℹ️ Usage
uvx blkcache /dev/sr0 file.iso
Then point tools at file.iso instead of /dev/sr0.
Why?
Copying some CDs and needed a way to do mount in FUSE, dump the filesystem, and
then ddrescue /dev/sr0 to get the image if possible. This means it doesn't
read the disk twice, even if you have a ton of drives attached
How?
It uses nbdkit to create a Network Block Storage device in Python, mounts it
using fuse, then creates a mmapped disk cache of sectors as they're read.
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