i documented this issue on october 1, 2014. the issue still exists, so i'm now reporting it again. i'm creating a new forum topic because it's been so long, because i'm running on more recent versions of software, and because the original issue was reported with bittorrent sync and that's since morphed into resilio sync.
i'm using sync to transfer files from a home server to a remote server, using my iphone as an intermediary/bridge.
the issue is that storage on the iPhone is seemingly not freed when a file is deleted by a peer.
there are three systems involved:
DESKTOP1: OS X 10.9.5; sync 2.4.1
MOBILE1: iOS 10.1.1; sync 2.4.5
DESKTOP2: OS X 10.9.5; sync 2.4.1
here's the process:
DESKTOP1 and MOBILE1 are on the same wifi network
a file is created on DESKTOP1
sync is started on DESKTOP1 and MOBILE1 and the file gets synced to MOBILE1
sync is stopped on DESKTOP1 and MOBILE1
MOBILE1 is switched from the wifi network to the cellular data network
sync is started on MOBILE1 and DESKTOP2
file is synced to DESKTOP2
sync is started on DESKTOP1
file is manually deleted from DESKTOP1 and subsequently deleted via sync from MOBILE1 and DESKTOP2
the problem is that the storage on MOBILE1 does not get freed when a synced file is deleted by a peer. for example, i have approximately 75GB of free space on MOBILE1. i just today transferred an approximately 73GB file using the process outlined above. after step 9, the storage is reclaimed on both desktops, but is not reclaimed on the mobile.
on the mobile: [settings > general > about] shows approximately 2GB of free space. it should be about 75GB . but if i open sync and display the one and only folder, it shows that there are zero files in the folder and that they are taking up 0KB of space.
so my question is: why is the storage not freed on the mobile? i'm either missing some iOS or sync archive-type setting, or there's an iOS or sync bug.
the only way i've seen thus far to immediately reclaim the storage is to delete the app and reinstall it, but that's a pain. i have noticed that if i wait several days and check the space again that the space has been reclaimed but i have not determined how many days need to pass before that happens, or what it is during that time that happens to cause the space to be reclaimed.
any insights will be greatly appreciated. thanks.