put() ack on deep path returns ENAMETOOLONG err from relay peer

[nsreed]

This is the ack.err I'm receiving in the put() callback:

{
code: "ENAMETOOLONG",
errno: -36,
path: "radata/~7BxxPOfsYoxRoS8MZg4ZToXIgkycgv5fAGMIh2uF18Y.oQwKMmhAN8HQZVSIDtHM6HUuL7FE2B4nn9l34kbH4-A%2Flayers%2Fko1u7yo76w~E3FYy4TjDsp5ayc0GtxLxV73ZMUMtj10eJaHKfPPkhw.GulVqv1RxCny-AqwxemFYFVX4xXzKCgf5wLRT-znSVo%2F%2Fchildren%2Fko2agvjf~E3FYy4TjDsp5ayc0GtxLxV73ZMUMtj10eJaHKfPPkhw.GulVqv1RxCny-AqwxemFYFVX4xXzKCgf5wLRT-znSVo%2F%1BstrokeJoin",
syscall: "open"
}

I believe this is due to a 255 character limit for file names in ext4. I'm in the process of rewriting my app to use a shallower graph structure (i.e., using set() for nested objects wherever possible), but figured it might not hurt to submit an issue for it.

[nsreed]

What's interesting is that every ack.err gives the ENAMETOOLONG error for the same path. Always radata/~7BxxPOfsYoxRoS8MZg4ZToXIgkycgv5fAGMIh2uF18Y.oQwKMmhAN8HQZVSIDtHM6HUuL7FE2B4nn9l34kbH4-A%2Flayers%2Fko1u7yo76w~E3FYy4TjDsp5ayc0GtxLxV73ZMUMtj10eJaHKfPPkhw.GulVqv1RxCny-AqwxemFYFVX4xXzKCgf5wLRT-znSVo%2F%2Fchildren%2Fko2agvjf~E3FYy4TjDsp5ayc0GtxLxV73ZMUMtj10eJaHKfPPkhw.GulVqv1RxCny-AqwxemFYFVX4xXzKCgf5wLRT-znSVo%2F%1BstrokeJoin which might be a useful hint.

I haven't worked on gun internals very much, but I think the error can be traced to radisk.js:20

gun/lib/radisk.js

Line 20 in 2168e3e

function ename(t){ return encodeURIComponent(t).replace(/\*/g, '%2A') }

which seems responsible for resolving the filename to write data out to (I could be totally wrong on that, I haven't found a great way to debug the gun library code). I plan on adding a check to this function to see if the filename exceeds 255 characters, but what to do in that case? no idea.

edit: removed parts of this comment that were problems in my code

[sloev]

i have the same error:

ERROR: [Error: ENAMETOOLONG: name too long, open 'radata/~fcHbrC7D1xZkYihq0G-fmMYw3yjII4rekIxMdzikX34.-bzdl1r7IHZPYFOsjZNw1FO5OQO07iaR5qj0qf-wd0A%2Fusers%2Fee2cbf55012c9bdf69b8324d1907a2fc3467f8cabac683828571213fa5b13f31%2FdU9ybT-uYaJagAtnV-0zblLxHBJbohZYLaCZHRh_i78.I9Um1wQC_okYUi2wi9x0GzUZoGV1q20Jdu1RxNzRPe8%1Busername_hash'] {
  errno: -63,
  code: 'ENAMETOOLONG',
  syscall: 'open',
  path: 'radata/~fcHbrC7D1xZkYihq0G-fmMYw3yjII4rekIxMdzikX34.-bzdl1r7IHZPYFOsjZNw1FO5OQO07iaR5qj0qf-wd0A%2Fusers%2Fee2cbf55012c9bdf69b8324d1907a2fc3467f8cabac683828571213fa5b13f31%2FdU9ybT-uYaJagAtnV-0zblLxHBJbohZYLaCZHRh_i78.I9Um1wQC_okYUi2wi9x0GzUZoGV1q20Jdu1RxNzRPe8%1Busername_hash'
}

[amark]

Yahhhhh there's a fix in one of the branches from 2 years ago but it breaks all previous data stored so >.< it never got published. Since we're switching from radix to binary search and that'll be a breaking change anyways, It'll get published with that, but that is IDK on the ETA.

meanwhile to fix (if can reset data) just add .slice(0, 255) I think to the line linked earlier.