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Delete preview files when emergency storage cleanup removes recordings

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When reduce_storage_consumption deletes old recording segments to free
disk space, it now also deletes preview files that overlap the same
time range. Without this, preview mp4 files on the same disk continued
to consume space, causing the storage maintainer to delete progressively
newer recordings while old previews accumulated — resulting in archives
where older periods had previews but no video.

This is particularly impactful for multi-path setups where each camera's
preview directory shares a disk with its recordings.

https://claude.ai/code/session_016bxjbVpx8DqpjysnGYmXdx
This commit is contained in:
Claude 2026-03-13 08:51:42 +00:00
parent 8433e16558
commit 6248dbf12f
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1 changed files with 27 additions and 1 deletions
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28
frigate/storage.py
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@ -10,7 +10,7 @@ from peewee import SQL, fn
from frigate.config import FrigateConfig
from frigate.const import RECORD_DIR, REPLAY_CAMERA_PREFIX
from frigate.models import Event, Recordings
from frigate.models import Event, Previews, Recordings
from frigate.util.builtin import clear_and_unlink
logger = logging.getLogger(__name__)
@ -390,6 +390,32 @@ class StorageMaintainer(threading.Thread):
f"Updated has_clip to False for {len(events_to_update)} events"
)
# Also delete preview files that overlap with deleted recordings so they
# don't continue to consume space on the same disk after the recordings
# are gone (especially important for multi-path setups where preview and
# recordings share the same disk).
if deleted_recordings:
deleted_previews = []
for camera, time_range in camera_recordings.items():
overlapping_previews = (
Previews.select(Previews.id, Previews.path)
.where(
Previews.camera == camera,
Previews.start_time < time_range["max_end"],
Previews.end_time > time_range["min_start"],
)
.namedtuples()
)
for preview in overlapping_previews:
clear_and_unlink(Path(preview.path), missing_ok=True)
deleted_previews.append(preview.id)
logger.debug(f"Expiring {len(deleted_previews)} previews")
for i in range(0, len(deleted_previews), max_deletes):
Previews.delete().where(
Previews.id << deleted_previews[i : i + max_deletes]
).execute()
deleted_recordings_list = [r.id for r in deleted_recordings]
for i in range(0, len(deleted_recordings_list), max_deletes):
Recordings.delete().where(