fs.watch fails on v1.8.1

[zj8487]

environment:

os: ubuntu 13.10
iojs: v1.8.1

step

> var assert = require('assert');
undefined
> fs.watch("/home/xxx/test.js", { persistent: true }, assert.fail)
Error: watch ENOSPC
    at exports._errnoException (util.js:749:11)
    at FSWatcher.start (fs.js:1228:11)
    at Object.fs.watch (fs.js:1254:11)
    at repl:1:4
    at REPLServer.defaultEval (repl.js:124:27)
    at bound (domain.js:254:14)
    at REPLServer.runBound [as eval] (domain.js:267:12)
    at REPLServer.<anonymous> (repl.js:277:12)
    at emitOne (events.js:77:13)
    at REPLServer.emit (events.js:166:7)

[evanlucas]

Do you have drive space left?

[zj8487]

how many space it will cost?

KiB Mem:   3010684 total,  2877212 used,   133472 free,   127428 buffers
KiB Swap:  3071996 total,      224 used,  3071772 free.   826616 cached Mem

i free some space it works~~~

[bnoordhuis]

ENOSPC can also mean you're running into one of the system limits:

$ sysctl -a | grep ^fs.inotify
fs.inotify.max_queued_events = 16384
fs.inotify.max_user_instances = 128
fs.inotify.max_user_watches = 8192

I'm going to close this as it's not really a bug. The error message could perhaps be a little nicer but the kernel doesn't tell us anything besides that ENOSPC error.

[zj8487]

thanks a lot