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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteA CLI daemon does not automatically keep its in-memory state when it restarts. Values held only by the running process disappear with that process; a new process can restore them only if the application rebuilds them from configuration or a persistent store. The practical question is therefore not simply whether the daemon came back, but whether the specific state you depend on was saved and recovered.
Because the title does not identify a particular daemon, operating system, or version, there is no universal persistence rule. Audit the process boundary, state ownership, write and recovery paths, then verify both service readiness and the records that matter to you.
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What happens to a daemon’s in-memory state when it restarts?
Process-local state exists for the lifetime of one running process. When that process exits, its memory is reclaimed. The replacement process starts with fresh memory; it may reconstruct some values from configuration, files, databases, or an external service, but that depends on the daemon’s design.
ZeroClaw documents this distinction explicitly: a full process restart rotates live RPC sessions, health snapshots, actor queues, and an ephemeral tool-receipt key. Those are examples of one product’s behavior, not a rule for every CLI daemon. ZeroClaw’s runtime state and persistence guide also distinguishes runtime state from data that can be backed up and restored.
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Keep two questions separate: did the process restart successfully, and did it restore the durable state you need? A healthy status or successful health probe answers the first question, not necessarily the second.
Which state might be lost, and which might survive?
“State” can refer to several different things. A daemon may keep temporary working data in memory while persisting user data elsewhere. Do not treat all state as one category.
| State class | Typical persistence question | Audit focus |
|---|---|---|
| Caches and health snapshots | Are these disposable and rebuilt, or does another component depend on them? | Find their owner and startup reconstruction path. |
| Queues and in-flight work | Are pending items drained, checkpointed, or lost on stop? | Check graceful-shutdown handling and durable queue storage. |
| Sessions and runtime receipts | Are they process-local, persisted, or recreated after startup? | Check session storage and whether restart invalidates active sessions. |
| Configuration and credentials | Are these loaded from files, a secret store, or another source? | Identify the authoritative source and include it in a protected backup plan. |
| Databases, memory, and user data | Which records are committed durably, and what restores them? | Locate the database or data directory and understand backup and recovery behavior. |
| Audit or operational logs | What actions are recorded, where are records kept, and what is omitted? | Confirm scope, retention, and whether the log itself survives the restart. |
These are audit categories, not guarantees. ZeroClaw’s backup guidance identifies configuration, a secret key, sessions, memory, databases, and selected state and log files as distinct items to consider. Its documentation also warns: “Do not run two daemons against the same install root.” That is product-specific guidance, but it illustrates why ownership and write coordination belong in a persistence audit. Read the ZeroClaw documentation.
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Trace the value from the component that changes it to the component that reloads it. A file or database existing on disk does not, by itself, prove that the state you care about is written there or restored at startup.
- Record the process boundary. Note the exact CLI and daemon versions, operating system, launch command, service manager, process ID or boot identifier if available, and supported restart command. Service wrappers can affect lifecycle behavior. OpenClaw, for example, documents service lifecycle commands and distinguishes normal restart from safe restart behavior. OpenClaw’s daemon CLI reference.
- Inventory state items. For each cache, queue, session, job, credential, health snapshot, or user-data record, identify its owner, in-memory representation, source of truth, persistence format and location, and intended survival across reload, graceful restart, crash, and host reboot.
- Trace writes and recovery. Find where mutations are saved, whether writes are committed atomically, whether shutdown drains or flushes work, and what startup reads or reconstructs. ZeroClaw documents transactional session-import receipts and the durability boundary around migration; RSigma documents optional SQLite snapshots and state restoration. ZeroClaw runtime persistence; RSigma state documentation.
- Identify the source of truth. Decide which file, database, secret store, or external service is authoritative. Record its backup and restore procedure, access controls, and what happens if it is missing or inconsistent. Avoid assuming a cache is the durable copy.
- Inspect shutdown and startup code or documentation. Look for explicit flush, drain, checkpoint, migration, and recovery steps. A successful shutdown message alone does not establish that every outstanding write was committed.
Persistence boundaries can be narrower than the product’s name suggests. RSigma’s optional state database supports a control-plane audit endpoint, while its documentation says data-plane ingest is not recorded there. An audit endpoint therefore should not be assumed to capture every operational event. RSigma’s state documentation.
How do you verify state after a restart?
Use a controlled restart and compare the same representative durable records before and after it. Capture enough evidence to distinguish “the service is up” from “the data was restored.”
- Before restarting: record status and health, relevant logs, and a small set of state identifiers or counts that matter to your workload. Preserve validation errors and note the time and restart method.
- Restart through the supported path: use the daemon’s documented CLI or service-manager command, rather than killing the process as a substitute for a normal stop.
- Check readiness: confirm that the service is installed or running as expected and that its health probe succeeds. OpenClaw’s status command reports service install state plus a gateway health probe; this is useful operational evidence, but it does not prove that arbitrary application records survived. OpenClaw daemon CLI reference.
- Check the records: query the same durable records or identifiers captured before restart. Confirm that expected sessions, jobs, configuration, or user data are present and usable, rather than relying only on a process ID or “started” log line.
- Review logs and backup scope: look for recovery, migration, or validation errors and confirm that the durable store and credentials needed for recovery are included in the backup plan. Signet documents workspace-local runtime state, a CLI log command, and health-probe guidance. Signet operations documentation.
A service can pass its health probe while a data store is empty, stale, or inaccessible to the workload. Conversely, a process-local cache may be absent immediately after startup and populate only as requests arrive. Define the expected post-restart result for each state item before treating either observation as a failure or success.
Why graceful stop, crash, reload, and reboot are different tests
One restart test cannot establish durability under every kind of interruption. A graceful stop may run cleanup code; a forced termination may not. A configuration reload may keep the same process alive, while a host reboot introduces machine-level startup and storage dependencies.
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- Graceful stop: tests the documented shutdown path, including any flush or queue-drain behavior.
- Forced process termination: tests what remains recoverable without normal shutdown handling.
- Daemon reload: tests whether configuration changes are applied in place or trigger process replacement; establish which behavior the product implements.
- Host reboot: tests service enablement, storage availability, credentials, and startup ordering as well as application recovery.
Linux auditd is a specific example of why shutdown semantics are product-dependent: its manual says SIGTERM stops processing, writes a shutdown audit event, and exits. That describes the system audit daemon, not a general promise about application-level CLI daemons. Linux auditd manual.
Keep results distinct by recording which event you tested, the command or signal used, and what state was expected to survive. OpenClaw documents safe-restart behavior with a deferral bounded to five minutes; that setting is specific to OpenClaw, not a general daemon timeout. OpenClaw daemon CLI reference.
What to preserve before repairing a failed restore
Do not delete a database, workspace, secret, or PID file simply because startup failed. First retain the exact error output and make a safe copy of the state needed for diagnosis and recovery. A cleanup step can erase the evidence or the only recoverable copy.
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- Save the daemon’s logs and exact validation or migration errors.
- Preserve the workspace, database, configuration, and required secrets before attempting repair.
- Use the product’s documented recovery path, and confirm that a backup is restorable before replacing the current data.
Signet specifically advises against routine deletion of its SQLite database, auth secret, or PID file. Follow the product’s own recovery instructions rather than applying generic cleanup advice. Signet operations documentation.
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