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Number of inotify watches was reached #24

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daemonza opened this issue Apr 24, 2012 · 2 comments
Closed

Number of inotify watches was reached #24

daemonza opened this issue Apr 24, 2012 · 2 comments

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@daemonza
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Not really a issue, but I ran in a problem on Linux where I hit the max number of inotify watches.

Doing the following, seems to fixed the issue :

echo 32000 >> /proc/sys/fs/inotify/max_user_watches

Here is the dump it generates when you hit the limit.

root@node:~/MacBak# /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/watcher.rb:80:in `initialize': No  
space left on device - Failed to watch   "/var/www/apache2//downloads/MapSDKs/Blackberry/1.1.2/Documentation/search":
The user limit on the total  number of inotify  watches was reached or the kernel failed to allocate a needed resource. (Errno::ENOSPC)
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:190:in `new'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:190:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:199:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:195:in `block in watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:192:in `watch'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapters/linux.rb:73:in `block in init_worker'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapters/linux.rb:72:in `each'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapters/linux.rb:72:in `init_worker'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapters/linux.rb:19:in `initialize'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:37:in `new'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:37:in `select_and_initialize'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/listener.rb:183:in `initialize_adapter'
    from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/listener.rb:44:in `block in start'

/usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:132:in ensure in works?': undefined methodstop' for nil:NilClass (NoMethodError)
from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:132:in works?' from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:102:inblock in usable_and_works?'
from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:102:in each' from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:102:inall?'
from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:102:in usable_and_works?' from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/adapter.rb:36:inselect_and_initialize'
from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/listener.rb:183:in initialize_adapter' from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/listen-0.4.1/lib/listen/listener.rb:44:inblock in start'
@Maher4Ever
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Thanks for reporting this. This is actually documented in the guard README file ("Advanced Linux system configuration"), but we will include it in the README of Listen too.

@thibaudgg
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What do you think about rescuing this error and inform the use about the command line to run?

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@thibaudgg @Maher4Ever @daemonza