I have a large BTRFS disk on my Linux Samba server. The content of the disk is rarely accessed, so most of the time the disk is sleeping. When I need to check if to see basic properties, not the file content, like file name/date/size using Windows File Explorer, there is a significant delay before the directory opens because the disk begins to spin up.
But if all I need are directory structure, file name/date/size, the size of those data is relatively small, so can't it be cached and shown to the SMB client without waking up the disk? I wonder if there is a way to cache those data for sleeping disks.
