Draft: streamcache: Add support for symlinks
Streamcache.filestore, currently, doesn't work when its directory is a symlink; the cleanup function ends up deleting it (see [1]). This commit fixes it by resolving the symlink to its absolute path during configuration.
The side-effects of this change are:
- The log messages, label values, etc. will use the resolved path instead of the value set in pack_objects_cache.dir, if it was a symlink.
- Since we lstat the path to check if it is a symlink, the errors that might happen during the cleanup (when
cleanWalk()is run) can now happen during configuration.
Fixes: #4845