Egg: ENOSPC Error

[marswong]

• Node Version: v6.10.0
• Egg Version: 1.0.0-rc.2
• Plugin Name: egg-watcher
• Plugin Version: 2.1.0
• Platform: 4.9.13-200.fc25.x86_64(Fedora 25)

启动官方的 egg hackernews，egg-watcher 执行 watch 的时候栈报错了，暂时未找到错误产生的原因。

错误日志：

2017-03-11 19:42:19,151 ERROR 31670 nodejs.ENOSPCError: watch /home/mwong/Documents/Recruit/interview/egg-example/config ENOSPC
    at exports._errnoException (util.js:1022:11)
    at FSWatcher.start (fs.js:1429:19)
    at Object.fs.watch (fs.js:1456:11)
    at Walk.<anonymous> (/home/mwong/Documents/Recruit/interview/egg-example/node_modules/wt/index.js:186:20)
    at emitTwo (events.js:106:13)
    at Walk.emit (events.js:191:7)
    at /home/mwong/Documents/Recruit/interview/egg-example/node_modules/ndir/lib/ndir.js:107:16
    at FSReqWrap.oncomplete (fs.js:123:15)
code: 'ENOSPC'
errno: 'ENOSPC'
syscall: 'watch /home/mwong/Documents/Recruit/interview/egg-example/config'
filename: '/home/mwong/Documents/Recruit/interview/egg-example/config'
dir: '/home/mwong/Documents/Recruit/interview/egg-example/config'
name: 'ENOSPCError'
pid: 31670
hostname: asus-x550cc

2017-03-11 19:42:19,154 ERROR 31670 nodejs.ENOSPCError: watch /home/mwong/Documents/Recruit/interview/egg-example/app ENOSPC
    at exports._errnoException (util.js:1022:11)
    at FSWatcher.start (fs.js:1429:19)
    at Object.fs.watch (fs.js:1456:11)
    at Walk.<anonymous> (/home/mwong/Documents/Recruit/interview/egg-example/node_modules/wt/index.js:186:20)
    at emitTwo (events.js:106:13)
    at Walk.emit (events.js:191:7)
    at /home/mwong/Documents/Recruit/interview/egg-example/node_modules/ndir/lib/ndir.js:107:16
    at FSReqWrap.oncomplete (fs.js:123:15)
code: 'ENOSPC'
errno: 'ENOSPC'
syscall: 'watch /home/mwong/Documents/Recruit/interview/egg-example/app'
filename: '/home/mwong/Documents/Recruit/interview/egg-example/app'
dir: '/home/mwong/Documents/Recruit/interview/egg-example/app'
name: 'ENOSPCError'
pid: 31670
hostname: asus-x550cc

2017-03-11 19:42:19,156 ERROR 31670 nodejs.ENOSPCError: watch /home/mwong/Documents/Recruit/interview/egg-example/app/public ENOSPC
    at exports._errnoException (util.js:1022:11)
    at FSWatcher.start (fs.js:1429:19)
    at Object.fs.watch (fs.js:1456:11)
    at Walk.<anonymous> (/home/mwong/Documents/Recruit/interview/egg-example/node_modules/wt/index.js:186:20)
    at emitTwo (events.js:106:13)
    at Walk.emit (events.js:191:7)
    at /home/mwong/Documents/Recruit/interview/egg-example/node_modules/ndir/lib/ndir.js:90:12
    at FSReqWrap.oncomplete (fs.js:123:15)
code: 'ENOSPC'
errno: 'ENOSPC'
syscall: 'watch /home/mwong/Documents/Recruit/interview/egg-example/app/public'
filename: '/home/mwong/Documents/Recruit/interview/egg-example/app/public'
dir: '/home/mwong/Documents/Recruit/interview/egg-example/app/public'
name: 'ENOSPCError'
pid: 31670
hostname: asus-x550cc

2017-03-11 19:42:19,158 ERROR 31670 nodejs.ENOSPCError: watch /home/mwong/Documents/Recruit/interview/egg-example/app/controller ENOSPC
    at exports._errnoException (util.js:1022:11)
    at FSWatcher.start (fs.js:1429:19)
    at Object.fs.watch (fs.js:1456:11)
    at Walk.<anonymous> (/home/mwong/Documents/Recruit/interview/egg-example/node_modules/wt/index.js:186:20)
    at emitTwo (events.js:106:13)
    at Walk.emit (events.js:191:7)
    at /home/mwong/Documents/Recruit/interview/egg-example/node_modules/ndir/lib/ndir.js:107:16
    at FSReqWrap.oncomplete (fs.js:123:15)
code: 'ENOSPC'
errno: 'ENOSPC'
syscall: 'watch /home/mwong/Documents/Recruit/interview/egg-example/app/controller'
filename: '/home/mwong/Documents/Recruit/interview/egg-example/app/controller'
dir: '/home/mwong/Documents/Recruit/interview/egg-example/app/controller'
name: 'ENOSPCError'
pid: 31670
hostname: asus-x550cc

[popomore]

这个错是没空间了吧？

[marswong]

但是感觉不太科学啊，我的 nvm 装在用户目录下的，我用户目录 900 多 G，几乎都没怎么用过。

[dead-horse]

http://stackoverflow.com/questions/22475849/node-js-error-enospc

[marswong]

通过修改系统配置：

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

提高监听的文件数确实可行，暂时没有什么问题，thanks：）

[shiny]

遇到了同样的问题，启动时报错：
ERROR 46 nodejs.ENOSPCError: ENOSPC: System limit for number of file watchers reached, watch '/usr/src/app/app/public/static'

[atian25]

@shiny 你是不是在 /app/public 目录下有 node_modules 了。

[shiny]

@atian25 没有。经过排查，疑似服务器上其他进程（类似 vscode remote server进程）引起的问题。重启释放后不再出现此错误信息。