node.js - App crashes with "Error: ENOENT" even if persistent folder exist -

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lets assume digitalocean/dokku/nodejs/sails app called example.com , (will be) available via corresponding domain.

i have added persistent storage app by:

dokku docker-options:add example.com run "-v /home/dokku/_work_:/_work_" dokku docker-options:add example.com deploy "-v /home/dokku/_work_:/_work_"

if run dokku run example.com "ls /app/_work_" or dokku run example.com "ls /app/_work_/uploads"i can see folder exists , there files/folders there.

ok, in app code want check folders in /app/_work_/uploads folder , delete old ones. first try list of folders in /app/_work_/uploads by:

... var p = path.join(sails.config.rootpath, '_work_/uploads'); var dirs = fs.readdirsync(p); ...

the problem code fails following error:

error: enoent: no such file or directory, scandir '/app/_work_/uploads'     @ error (native)     @ object.fs.readdirsync (fs.js:808:18)     @ cleandirs (/app/config/bootstrap.js:36:16)     @ object.module.exports.bootstrap (/app/config/bootstrap.js:21:2)     @ sails.runbootstrap (/app/node_modules/sails/lib/app/private/bootstrap.js:44:25)     @ sails.wrapper [as runbootstrap] (/app/node_modules/sails/node_modules/lodash/index.js:3095:19)     @ sails.initialize (/app/node_modules/sails/lib/app/private/initialize.js:68:9)     @ wrapper (/app/node_modules/sails/node_modules/lodash/index.js:3095:19)     @ /app/node_modules/sails/node_modules/async/lib/async.js:713:13     @ iterate (/app/node_modules/sails/node_modules/async/lib/async.js:262:13)     @ /app/node_modules/sails/node_modules/async/lib/async.js:274:29     @ /app/node_modules/sails/node_modules/async/lib/async.js:44:16     @ /app/node_modules/sails/node_modules/async/lib/async.js:718:17     @ /app/node_modules/sails/node_modules/async/lib/async.js:167:37     @ /app/node_modules/sails/lib/app/load.js:184:13     @ /app/node_modules/sails/node_modules/async/lib/async.js:52:16     @ /app/node_modules/sails/node_modules/async/lib/async.js:548:17     @ /app/node_modules/sails/node_modules/async/lib/async.js:542:17     @ _arrayeach (/app/node_modules/sails/node_modules/async/lib/async.js:85:13)     @ immediate.taskcomplete (/app/node_modules/sails/node_modules/async/lib/async.js:541:13)     @ processimmediate [as _immediatecallback] (timers.js:383:17)

how can if /app/_work_/uploads , there folders there if check manually?

it turned out event if have files visible via ls command directly , through docker run <app> <command> application cannot see them. in order fix instead of

dokku docker-options:add example.com run "-v /home/dokku/_work_:/_work_"

you have add /app/ second part of command by

dokku docker-options:add example.com run "-v /home/dokku/_work_:/app/_work_"

you same ls or dokku run .. outputs but, important, app able access files.

i appreciate if link me on why ls worked in both cases, adding /app prefix problem solved.


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