# lxc/lxcfs

FUSE filesystem for LXC

Repository: https://github.com/lxc/lxcfs
Canonical: https://ross.abutalabs.com/products/lxcfs
Homepage: https://linuxcontainers.org/lxcfs
Language: C
License: NOASSERTION
License Family: other
Topics: c, lxc, fuse-filesystem, containers
Last push: 2026-05-15T13:16:04+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 82, release rhythm 57, longevity 100
- inputs: {"age_days": 4282, "days_push": 110, "days_rel": 126, "gap_med": 104, "n_releases_24m": 6}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1194, forks 273 (observed 2026-08-28T04:03:56.527175+00:00)

## What it is
LXCFS is a small FUSE filesystem written in C that makes Linux containers feel more like virtual machines. It bind-mounts container-aware versions of crucial procfs files (cpuinfo, meminfo, uptime, etc.) so values reflect the container rather than the host.

## Use cases
- make containers report correct /proc/uptime and /proc/meminfo
- show cgroup-aware cpu and memory values inside containers
- run systemd in unprivileged LXC containers with cgroup access
- mask host procfs entries for container isolation
- make container resource limits visible to tools reading /proc

## When to choose
- you run LXC or Incus containers and want VM-like /proc visibility
- tools inside containers misreport resources because they read host procfs
- you need cgroup-aware proc values on older kernels without cgroup namespaces

## When to avoid
- you only use Docker or Kubernetes, which have their own proc masking
- your kernel's cgroup namespaces already provide the isolation you need
- you need a general-purpose FUSE filesystem rather than proc masking

## Facets
- artifact type: cli-tool
- maturity: stable
- function: file-system, container-runtime, monitoring
- domain: operating-systems
- platform: c
- tags: fuse-filesystem, lxc, procfs, cgroups, containers, virtualization, linux, fuse

## Member repositories
- lxc/lxcfs (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:56.527175+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:22:09.977243+00:00, confidence not recorded.
  - readme: https://github.com/lxc/lxcfs (fetched 2026-08-28T04:03:56.527175+00:00, sha c83ae3534c0e)
  - homepage: https://linuxcontainers.org/lxcfs (fetched 2026-08-29T12:29:29.846192+00:00, sha bed83d8ee580)
  - site_page: https://linuxcontainers.org/incus/docs/main (fetched 2026-08-29T12:29:29.855332+00:00, sha e7ded83d765b)
  - site_page: https://linuxcontainers.org/incus-os/docs/main (fetched 2026-08-29T12:29:29.857598+00:00, sha 03cf5084e71c)
  - site_page: https://linuxcontainers.org/lxc/getting-started (fetched 2026-08-29T12:29:29.859384+00:00, sha bc8a7ac428c9)
  - site_page: https://linuxcontainers.org/lxc/documentation (fetched 2026-08-29T12:29:29.861559+00:00, sha 12b232992f56)
  - site_page: https://linuxcontainers.org/lxcfs/getting-started (fetched 2026-08-29T12:29:29.864194+00:00, sha da97669c7916)
  - site_page: https://linuxcontainers.org/distrobuilder/docs/latest (fetched 2026-08-29T12:29:29.865937+00:00, sha b769c8605a16)
- Data as of 2026-08-30T08:39:29.467469+00:00.