{"record":{"id":"ef0f3ef8a4591eea","repo":"BerriAI/litellm","slug":"backup-path-already-exists-lite-up-looks-li","errorCode":null,"errorMessage":"{BACKUP_PATH} already exists -- `lite up` looks like it's already running (or crashed without cleanup). Run `lite down` first.","messagePattern":"(.+?) already exists -- `lite up` looks like it's already running \\(or crashed without cleanup\\)\\. Run `lite down` first\\.","errorType":"exception","errorClass":"UpError","httpStatus":null,"severity":"error","filePath":"litellm/proxy/client/cli/commands/up.py","lineNumber":208,"sourceCode":"@click.pass_context\ndef up(ctx: click.Context) -> None:\n    \"\"\"Route every Claude Code session through your LiteLLM proxy until stopped.\n\n    Patches ~/.claude/settings.json so Claude Code picks up the proxy on its own\n    next startup, from any terminal -- no need to launch it through `lite`.\n    Press Ctrl-C to stop and restore your original settings. Assumes the proxy\n    is already running (this does not start one for you). Cursor is not\n    supported: it has no equivalent file-based config to patch.\n    \"\"\"\n    base_url: Final = ctx.obj[\"base_url\"]\n\n    try:\n        _ensure_fresh_login(ctx)\n        api_key: Final = resolve_api_key(ctx)\n        verify_proxy_key(base_url, api_key)\n\n        if BACKUP_PATH.exists():\n            raise UpError(\n                f\"{BACKUP_PATH} already exists -- `lite up` looks like it's already \"\n                \"running (or crashed without cleanup). Run `lite down` first.\"\n            )\n\n        api_key_helper: Final = resolve_api_key_helper(base_url)\n        original_existed: Final = CLAUDE_SETTINGS_PATH.exists()\n        original_settings: Final = load_json_or_empty(CLAUDE_SETTINGS_PATH)\n        write_backup(\n            BackupRecord(\n                existed=original_existed,\n                content=original_settings if original_existed else None,\n            )\n        )\n\n        CLAUDE_SETTINGS_PATH.parent.mkdir(exist_ok=True)\n        merged: Final = merge_claude_settings(original_settings, base_url, api_key_helper)\n        with open(CLAUDE_SETTINGS_PATH, \"w\") as f:\n            json.dump(merged, f, indent=2)","sourceCodeStart":190,"sourceCodeEnd":226,"githubUrl":"https://github.com/BerriAI/litellm/blob/77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8/litellm/proxy/client/cli/commands/up.py#L190-L226","documentation":"Raised by `lite up` when it is about to snapshot ~/.claude/settings.json but the backup file ~/.litellm/claude_settings_backup.json (BACKUP_PATH) already exists. The backup doubles as a run marker: a live `up` keeps it until it restores on exit, so an existing file means another `up` is running or a previous one died without cleanup (kill -9, closed terminal, crash). Refusing to overwrite it protects the original Claude settings from being lost.","triggerScenarios":"Starting a second `lite up` while one is already running; a previous `up` killed with SIGKILL or by a terminal/SSH disconnect so its atexit/SIGTERM restore never ran; leftover backup from an earlier crashed session; reboot or sleep killing the foreground `up` process.","commonSituations":"tmux/SSH session was killed while `up` was in the foreground; CI box reused across runs after a hard timeout; developer forgot a `lite up` running in another terminal; machine crashed mid-session.","solutions":["Run `lite down` — it restores ~/.claude/settings.json from the backup and deletes the backup — then retry `lite up`","Before forcing anything, confirm no other `lite up` is alive: `pgrep -af 'lite up'`","If `lite down` says nothing to restore but the file persists, inspect ~/.litellm/claude_settings_backup.json, hand-restore its `content` into ~/.claude/settings.json if it holds your real settings, then delete the backup file"],"exampleFix":"# before\nlite up   # UpError: /home/me/.litellm/claude_settings_backup.json already exists ...\n\n# after\nlite down   # restores original settings, removes backup\nlite up","handlingStrategy":"validation","validationCode":"import subprocess, sys\nfrom pathlib import Path\n\nbackup = Path.home() / \".litellm\" / \"claude_settings_backup.json\"\nif backup.exists():\n    print(\"stale `lite up` state detected — restoring before start\")\n    raise SystemExit(subprocess.call([\"lite\", \"down\"]))\nraise SystemExit(subprocess.call([\"lite\", \"up\"]))","typeGuard":null,"tryCatchPattern":"try:\n    start_lite_up()\nexcept UpError as e:  # or click.ClickException when driving the CLI\n    if \"already exists\" in str(e):\n        run_lite_down_then_retry()\n    raise","preventionTips":["Stop `lite up` with Ctrl-C or SIGTERM (never kill -9) so its atexit restore removes the backup","Run `lite down` as the first recovery step on any box where `up` died uncleanly","Before starting `up`, check for a running instance: pgrep -af 'lite up'"],"tags":["litellm","cli","lock-file","claude-code","stale-state"],"backgroundTag":"stale-lock-file","analyzedSha":"77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8","analyzedAt":"2026-08-18T11:44:31.656Z","schemaVersion":2},"datasetVersion":"2026-08-21T13:17:26.733Z"}