install and support rfs v2 with backward compatibility support

[muhamadazmy]

Right now zos uses rfs with v1 (named g8ufs on the zos) we need to also have (and support) v2 on the node. So we ALWAYS need to maintain the 2 binary versions

• v1 (already named g8ufs)
• v2 (we can stick with rfs name)

The flistd daemon need to be able to decide which one of the 2 binaries to use based on the flist name. Right now the best way to do so is by just checking the flist extension of the flist to be mounted.

• v1 flist extension is always (.flist) as done by the hub.
• v2 flist is a completely new format (named fungistore) hence the extension used is .fl

flistd then can detect the type, and based on that either use the old binary, or the new one. Note that they both has different argument lists.

[khaledyoussef24]

where can i verify or check the images of v2 .fl ?

[khaledyoussef24]

• verified

• followed and read the docs of https://github.com/threefoldtech/rfs

• it was clear and followed them and ran rfs pack -m output.fl -s 00-80=dir:///tmp/store0 -s 81-ff=dir:///tmp/store1 ~/Documents

• and the output file created successfully

• then mounting the .fl file to another directory

• then checking the directory from another terminal to check the mounted docs

• the mounted docs copied successfully

• the data found successfully

[khaledyoussef24]

verified deployed a vm using terraform using v2 '.fl' and it worked fine and was reachable it is not supported on playground yet the example used: deployed the VM worked fine

[ramezsaeed]

Note:

• not supported in playground.
• only supported grid client, GO client and terraform