# Fix resilio sync permissions on synology raid pool 1. Group membership: rslsync wasn't in the users group. Added it by editing /etc/group directly (synogroup and usermod both failed on DSM): ```bash sudo sed -i 's/^users:x:100:$/users:x:100:rslsync/' /etc/group sudo synopkg restart resiliosync ``` 2. Synology ACLs: The + on directory permissions indicated ACLs were in effect, which overrode the permissive POSIX bits. The ACL only allowed guest and administrators. Added an explicit entry for rslsync: ```bash sudo synoacltool -add /volume1/shares user:rslsync:allow:rwxpdDaARWcCo:fd-- sudo synoacltool -enforce-inherit /volume1/shares ```