It seems like this is still an issue. It seems like I may be completely unable write data to the mounted shares despite having enabled write with the unsupported flag.
I have attempted to add some docker containers and they appear to install, and then freeze when attempting to access the RAID6 FS.
I attempted to copy a file into one of the other shares on the FS and ran into a similar result.
It seems like RAID6 may not function at all.
Edit:
I have preformed a sanity check using the ISO uploaded and built by pallab in this thread, and it seems like everything has started and imported without issue, however, it still does not allow new file creation.
It seems like I have broken something with the creation of the ISO itself, but something seems to be broken between the filesystem on my pool and the version of BTRFS on the new version of Rockstor.