QFileSystemWatcher problem

Goffer

Hello community,

I've tried to use the QFileSystemWatcher to watch changes inside a directory, it works fine on my machine but when I go on a colleague's machine and watch the same directory, he doesn't get notified when I edit the content of this directory but he gets notified when HE edits but then I am not notified anymore ... unless I edit again etc etc

The directory is writeable by everyone since we can both write in it.

def test(x):
	print 'file changed', x


from PySide import QtGui, QtCore

fileWatcher = QtCore.QFileSystemWatcher()
fileWatcher.addPath('/path/to/dir')


fileWatcher.directoryChanged.connect(test)

We are on CentOS Gnome 2.28.2

any idea ?

Thx

mrjj

Hi
Are you modifying files over a network share (nfs) or in what way is the situation different for the editing case
he/you make changes ?

As far as i understand QFileSystemWatcher uses inotify and that dont default works with nfs
https://stackoverflow.com/questions/4231243/inotify-with-nfs

Goffer

Hi @mrjj

Yes, files are all stored on a shared network
So, does it mean there is no way to achieve the fileWatcher with Qt if I work on a shared network ?(considering that I am a simple user without any privilege to modify the system)

Thx

mrjj

@Goffer
Hi
only if they fixed that inotify works with NFS as far as i understand it.
Its 7 years old thread but i google at bit and saw post 4
years ago having same issues.
So unless it works now, then i guess it cant work out of the box.
(unless you make it work)

Goffer

@mrjj

Well, I don't have the privileges nor the system knowledge to make it work in my company ...
I will give it a try with Qt5 if installed, maybe it's working.

Otherwise, I will look for alternative solutions and post what I find

Thx for your time ! ;)

mrjj

@Goffer
If you have a linux IT dude there, he might be able to fix it, or know an alternative.

Goffer

@mrjj
Might be worth asking. Will open a ticket ;)

JonB

@Goffer
Just to be clear: this is an NFS/inotify issue/limitation, nothing to do with QFileSystemWatcher per se.