I have an external hard drive connected via USB to an Airport Extreme. I have "sharing" enabled and have created two accounts on the Airport for the drive. The drive has 4 partitions on it (that I created using DiskUtility by first connecting the drive to my desktop system). The 4 partitions collectively cover/consume all space available on the drive.
In the Finder of a macbook on the Airport's network, the Airport shows up in the finder as a "Shared" device. Clicking on it and then connecting (using one of the aforementioned accounts) reveals 5 "sharepoints" -- 4 corresponding to the 4 partitions on the drive and a fifth one that is named after the account used for effecting the connection.
On a different machine, I browse the Airport using the other Airport account and 5 "sharepoints" are revealed -- 4 associated with the drive's partitions and a fifth one that is named after this second account.
From the original macbook, I create a file on the per-user share point and it seems to exist. I unmount the shared devices and remount them -- the copied file is still in the per-user share.
Where is this file actually being stored? I mean, it's presumably on the Airport's hard drive, but where? I checked the other partitions (using
ls -la) and didn't see any obvious new files created or existing files modified in the timeframe of the creation time/date of the per-user-share file. Is there some sort of storage internal to the filesystem being used for these virtual partitions?