hangs when using the GUI “Files" to try to browse the mounted SAFE drive

[happybeing]

Reported by tmark on dev forum here.

OS: Ubuntu 18.4.1

[happybeing]

This might be due to the Ubuntu file manager causing FUSE to call operations which are not yet supported (e.g. statfs).

Needs replicating and the above cause confirming.

[JPL1]

I'm also getting this in Debian 9.

On trying to open ~/SAFE from with a file manager (eg Thunar), or trying to open a file in the mounted FS with another application from the command line application (eg firefox index.html) the terminal used to launch mount-safe shows the following message and all terminals become unresponsive to the ls command. I think this must be some sort of service crash because it affects various other applications too, necessitating a PC reboot.

node:1642) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'gt' of undefined
    at module.exports.statfs.safeVfs.getHandler.statfs.then (/snapshot/safenetwork-fuse-v0.1.0/src/fuse-operations/statfs.js:0:0)
    at <anonymous>
(node:1642) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 19)
(node:1642) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[JPL1]

Also on closing everything down and running ls -l ~ the SAFE directory properties are d??? ??? ??? and trying to access it throws an error about no transport being available

[JPL1]

Also on closing everything down and running ls -l ~ the SAFE directory properties are d??? ??? ??? and trying to access it throws an error 'transport endpoint not connected'

[JPL1]

Also on closing everything down and running ls -l ~ the SAFE directory properties are d??? ??? ??? and trying to access it throws an error 'transport endpoint not connected'

[JPL1]

Hmm. I just tried this again from the terminal and I'm able to open a SAFE location using Thunar and files using firefox and mousepad, but closing Thunar (file manager) caused it to crash with the error above. Not sure what I did differently this time.

[happybeing]

Thanks for the reports John. I have an idea what causes this but haven't looked into it yet.

I think this must be some sort of service crash because it affects various other applications too, necessitating a PC reboot.

I have found the following very reliable in recovering after a hang avoiding the need to reboot:

pkill mount-safe ; sudo unmount ~/SAFE

[happybeing]

I'm making this a good first issue on the assumption it is due to the GUI invoking FUSE operations that are not yet supported by safenetwork-fuse. In that case, a first fix will be to review ./src/safe-vfs and make sure that any unimplemented fuse operations fail without causing the operation to 'hang'.

I think that would best be done by having a dummy implementation in ./src/safe-vfs for everything, which fails politely, and which will be replaced when the FUSE op is implemented.

[happybeing]

Believed fixed.