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Update "Root Filesystem Overlay" section about default rootfs overlay.

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Fixes #11559

PiperOrigin-RevId: 738072702
This commit is contained in:
Ayush Ranjan
2025-03-18 11:11:59 -07:00
committed by gVisor bot
parent 25d30ccc2c
commit 1da6370925
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g3doc/user_guide/filesystem.md
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@@ -54,6 +54,10 @@ filesystem is important because k8s scans the container's root filesystem from
the host to enforce local ephemeral storage limits. You can also place the
overlay host file in another directory using `--overlay2=root:/path/dir`.
Self-backed rootfs overlay (`--overlay2=root:self`) is enabled by default in
runsc for performance. If you need to propagate rootfs changes to the host
filesystem, then disable it with `--overlay2=none`.
## Directfs
Directfs is a feature that allows the sandbox process to directly access the