vinzenz/hyperhive
vinzenz/hyperhive
Watch
0
0
Fork
You've already forked hyperhive
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

hive-c0re: back agent state dirs with btrfs subvolumes

Browse source 
Progressive enhancement: a brand-new agent's state root under
/var/lib/hyperhive/agents is created as a btrfs subvolume when the host
filesystem is btrfs, otherwise it falls back to a plain directory. No
existing agent is auto-migrated — the new path only fires when the root
does not yet exist, so plain-dir agents are left untouched until an
explicit opt-in upgrade.

Two new privileged ops (subvolume create/delete are root-only):
EnsureAgentSubvolume statfs-gates on btrfs, creates the subvolume, and
chowns it to the hive-core user so the normal state/claude/harness
mkdirs succeed inside it; DeleteAgentSubvolume btrfs-subvolume-deletes
the root iff it is actually a subvolume. hive-c0re calls Ensure before
the per-agent dirs are created (spawn/rebuild/InitConfig) and Delete on
the purge path only — destroy keeps the subvolume for revival, matching
plain-dir semantics. btrfs-progs added to the hive-priv unit PATH.

Per-subvolume usage accounting + optional quota is a separate
follow-up.
This commit is contained in:
atlas 2026-06-19 12:28:17 +02:00 • committed by mara
commit 1f602d5fda
9 changed files with 242 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
Cargo.lock generated
View file

@ -1406,6 +1406,7 @@ version = "0.1.0"
dependencies = [
"anyhow",
"hive-sh4re",
"libc",
"serde_json",
"tokio",
"tracing",