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[stable33] fix(files_external): S3 folder mtime updated on every read-only access - #61978
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normalizePath('') returns '.' for S3 object keys, but the filecache stores the
storage root under the key ''. getDirectoryMetaData() was calling getCache()->get('.')
which looks up by md5('.'), never matching the root entry stored at md5('').
The cache miss caused getDirectoryMetaData to return synthetic data with time() as
mtime/storage_mtime and uniqid() as etag on every call. The scanner then saw a
storage_mtime mismatch and wrote the fabricated timestamps back to the cache on every
occ files:scan run, regardless of whether any S3 content had changed.
Introduce getCachePath() to translate the normalized root path '.' back to '' before
any filecache lookup.
Assisted-by: ClaudeCode:claude-sonnet-4-6
Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>…rs it Common::getMetaData (Common.php:667) always sets storage_mtime = mtime before returning. For S3 virtual directories this is wrong: mtime can be bumped by child propagation while storage_mtime should remain the actual last S3 change. When the scanner later calls getMetaData() it compares data['storage_mtime'] against cacheData['storage_mtime']. If they differ it writes the value back, triggering View::getCacheEntry to fire propagateChange on every read even when nothing on S3 changed. Override getMetaData() to restore storage_mtime from the live cache entry (or, for non-root directories not yet in the cache, from the S3 directory marker LastModified header) after the parent call. Assisted-by: ClaudeCode:claude-sonnet-4-6 Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>
…changed Storage backends like AmazonS3 whose hasUpdated() always returns true (S3 has no cheap global change-detection mechanism) caused propagateChange() to be called on every watcher->update() after a folder was browsed, even when the underlying storage_mtime and etag were identical to the cached values. Before the fix, getCacheEntry() would call watcher->update() and then unconditionally call propagateChange() whenever the watcher reported a change. For S3 directories this meant every read bumped the parent mtime chain. After the fix, getCacheEntry() snapshots the cache entry before watcher->update() and compares it with the entry after. propagateChange() is only invoked when at least one metadata field (mtime, storage_mtime, size, or etag) actually changed. Assisted-by: ClaudeCode:claude-sonnet-4-6 Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>
Add null-safety checks to handle S3 responses that don't include
LastModified and ETag fields. This prevents 'Undefined array key'
warnings and deprecation notices when processing directory metadata
or incomplete S3 responses.
- objectToMetaData(): Check if LastModified/ETag exist before accessing
- getMetaData(): Check if LastModified exists before using in strtotime()
Fixes test failures in testStat where hasUpdated('/', time) would fail
when encountering S3 objects without complete metadata.
Assisted-by: ClaudeCode:claude-sonnet-4-6
Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>Antreesyforce-pushed
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July 15, 2026 08:16
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tested with rustfs as external s3, and occ files:scan
Merged
CarlSchwan
approved these changes
Jul 15, 2026
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Backport of #59539
Warning, This backport's changes differ from the original and might be incomplete⚠️
Todo
Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.