VirtualBox

Ticket #9069 (new defect)

Opened 3 years ago

Last modified 13 days ago

shared folder doesn't seem to update

Reported by: tillk Owned by:
Priority: critical Component: shared folders
Version: VirtualBox 4.0.8 Keywords:
Cc: Guest type: Linux
Host type: Linux

Description

I ran into an issue where when I change a file on/in a shared folder, the change is not seen when I serve up the file through a webserver (e.g. nginx).

I originally reported this with  vagrant, but they directed me here. I tried 4.0.8 of course already. This issue is present on at least two operating systems (Linux und MacOSX).

The guest in both cases was Linux (Ubuntu Karmic 9.10). I can provide my image if necessary --- it's a vagrant box.

Per ticket I previously opened (on github, vagrant), it seems to be an issue related to the syscalls of sendfile.

Let me know if I can provide more information or test.

Change History

comment:1 Changed 2 years ago by Denis Obydennykh

I'm using Virtual Box for development purposes. There I have installed LAMP + nginx. The communication between host Windows and virtual machine is made using virtualbox shared directories.

Some time ago nginx started working wrong - static files were not updated after changes (i've changed them from windows). If the browser tried to retrieve file throw nginx - it recieved old version (also with some special chars at the end of file). At the same time apache was working normal, vim and other programs inside virtualbox were showing right version of file.

The problem was solved by changing virtual machine disk controller from sata to ide.

comment:2 Changed 2 years ago by Denis Obydennykh

IDE solved the problem only for some time.

Seems that stat return wrong timestamp of last modification. And nginx thinks that file didn't changed.

comment:3 Changed 2 years ago by steolo

happens to me all the time...

actually, since my newly built machine, I also get incoherent states where folders or applications inside my ubuntu virtualmachine are listed in red, plenty of question marks, and are actually not-accessible.

comment:4 Changed 2 years ago by billwiens

I had the same issue, with the Apache webserver, and I found a solution on  this StackOverflow post. I'm able to fix the problem by adding "EnableSendfile off" to my Apache configuration.

I'm assuming that the same problem can be fixed in nginx by editing the  sendfile directive.

comment:5 Changed 13 days ago by mpeters

Same issue for several years now. This really needs to be fixed since shared folders between hosts and guests are essential for many work flows. And sendfile is a very useful performance improvement for lots of software. And it's just such an obscure bug that can suck tons of time trying to track down and fix.

Please put some effort into at least investigating this and hopefully it'll be a quick fix.

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