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Streamline VM overlays and rootfs packages

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Move the default guest package list into a repo manifest and record a hash beside built rootfs images so run/make-rootfs can warn when the docker-ready image is stale.

Switch the Firecracker launch path to a single sparse root overlay per VM instead of separate /home and /var disks, so many VMs can share the same base image while still installing packages under /var and working from /root.

Keep older images bootable by masking stale home.mount and var.mount units at boot, and scrub those obsolete fstab entries when customize.sh rebuilds an image. Verified with bash -n on the updated scripts; no live VM boot was run in this environment.
This commit is contained in:
Thales Maciel 2026-03-15 19:36:54 -03:00
parent 9191b7e370
commit 3cf33d1e0a
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GPG key ID: 33112E6833C34679
8 changed files with 206 additions and 204 deletions
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5
make-rootfs.sh Normal file → Executable file
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@ -18,6 +18,7 @@ EOF
}
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$DIR/packages.sh"
OUT_ROOTFS="$DIR/rootfs-docker.ext4"
SIZE_SPEC="6G"
BASE_ROOTFS=""
@ -45,6 +46,10 @@ while [[ $# -gt 0 ]]; do
done
if [[ -f "$OUT_ROOTFS" ]]; then
OUT_ROOTFS_WARNING="$(banger_rootfs_manifest_warning "$OUT_ROOTFS" || true)"
if [[ -n "$OUT_ROOTFS_WARNING" ]]; then
log "warning: $OUT_ROOTFS_WARNING"
fi
log "already exists: $OUT_ROOTFS"
exit 0
fi