notebook changed on disk message

[dschneiderch]

When I'm working in a notebook jupyter 4.0.6 in Safari, OSX 10.9.5 I periodically get a message saying the file has changed from disk, do I want to reload or overwrite. I"m certain there are no other kernels or notebooks running. I usually just say overwrite but why does this happen?
One more bit of info: I'm running the notebook as a publicly accessible server (so I can access it from my labtop) and all the files live on a locally mounted server.
here is the terminal output:
iMac:~ $ jupyter notebook
[I 15:17:16.737 NotebookApp] Serving notebooks from local directory: /Users/dosc3612
[I 15:17:16.737 NotebookApp] 0 active kernels
[I 15:17:16.737 NotebookApp] The IPython Notebook is running at: https://[all ip addresses on your system]:8888/
[I 15:17:16.738 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[I 15:28:57.760 NotebookApp] Kernel started: ec591d51-c03c-44fc-86bf-a221c0e1b0a7

IRkernel::main()
[1] "Got unhandled msg_type:" "comm_open"
[I 15:30:57.046 NotebookApp] Saving file at /Documents/snotel-regression_project/src/validate_surveygridded.ipynb
[I 15:37:04.133 NotebookApp] Saving file at /Documents/snotel-regression_project/src/validate_surveygridded.ipynb
[I 15:37:05.369 NotebookApp] Saving file at /Documents/snotel-regression_project/src/validate_surveygridded.ipynb

[Carreau]

I"m certain there are no other kernels or notebooks running

Could there be something else accessing the file ? If you get this message it means that there is something else that have modified the file since last save. Could there be a dropbox syncing ? Or could the dates on the mounted filesystem be wrong ?

[dschneiderch]

The dates and times look in sync. There is no dropbox syncing on this
folder. I also don't remember getting this while using ipython3
(pre-jupyter).
[image: Inline image 1]

Dominik Schneider
o 303.735.6296 | c 518.956.3978

On Tue, Sep 22, 2015 at 3:57 PM, Matthias Bussonnier <
notifications@github.com> wrote:

I"m certain there are no other kernels or notebooks running

Could there be something else accessing the file ? If you get this message
it means that there is something else that have modified the file since
last save. Could there be a dropbox syncing ? Or could the dates on the
mounted filesystem be wrong ?

—
Reply to this email directly or view it on GitHub
#484 (comment).

[lithces]

Same situation.

I am running ipython notebook in a Fedora 22 box. The box is running as a vmware guest hosted on M$ windows.

The ipynb file is stored in a directory mounted with vmhgfs in the guest machine, and the corresponding directory on the host Windows machine is a directory in NTFS.

ipython version is 4.0.0.

The issue does not exist if the ipynb file is stored in a naive ext4 partition.

[ellisonbg]

I see this sometime, but usually when the underlying notebook has changed because of git...

[efiring]

This is also happening to me, running ipython notebook on a linux guest under VmWare Fusion, working on a filesystem mounted with vmhgfs. I have suspected that the problem occurs when the OS X clock is slightly out of sync with the linux clock, owing to a suspend; but if so, it involves tiny offsets. I'm using ntp on both OS X and the linux VM.

As a workaround, is there a way to disable this check? It is seriously interfering with work.

[Carreau]

As a workaround, is there a way to disable this check? It is seriously interfering with work.

Not easily. You can modify site-packages/notebook/static/notebook/js/main.min.js:26294

(or notebook/js/notebook.js if running from dev)

and change:

        if (check_last_modified) {
            return this.contents.get(this.notebook_path, {content: false}).then(
                function (data) {

To

if(false) {....

It might be due to an clock offset, you might be right.

[dschneiderch]

this issue hasn't occurred since i switched to chrome from safari.

Dominik Schneider
o 303.735.6296 | c 518.956.3978

On Sat, Nov 7, 2015 at 5:09 PM, Matthias Bussonnier <
notifications@github.com> wrote:

As a workaround, is there a way to disable this check? It is seriously
interfering with work.

Not easily. You can modify
site-packages/notebook/static/notebook/js/main.min.js:26294

(or notebook/js/notebook.js if running from dev)

and change:

    if (check_last_modified) {
        return this.contents.get(this.notebook_path, {content: false}).then(
            function (data) {

To

if(false) {....

It might be due to an clock offset, you might be right.

—
Reply to this email directly or view it on GitHub
#484 (comment).

[Carreau]

We get sufficiently enough bug reports that I'll bump that to 4.1, maybe 4.2.
I see if I can generate a UUID on client, or smth with a hash to do an extra-compare and prevent annoying report.

[Carreau]

#729 add some debug statements in Javascript, it might help us to debug.
If any of you can test, we would appreciate. It can give us more insight of why that's hapenning.