Can read from a mounted folder but cannot write to it

Ignition
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1

I am running Perspective in v8.1.42 and I have a web dev mounted folder that I can read from but I cannot write to it.

I want to know if this behavior is a permissions issue?

The web dev mountedFolder is linked to the following:

/var/ignition/Photos/

and I can read from that location just fine - for example

/system/webdev/projectName/mountedFolder/image.png

This is the code that actually works. Both options actually indicate success which tells me Ignition thinks it is writing somewhere when using the mountedFolder path below.

pathBase = "/var/ignition/Photos/" #<-- this works
# pathBase = "/system/webdev/projectName/mountedFolder/" #<-- does not work

newPath = pathBase + "image.png"

dest = File(newPath)

parent = dest.getParentFile()
if not parent.exists():
    parent.mkdirs()

event.file.copyTo(dest)

I have no issue setting an image component source property to either of the options presented above indicating I do have read permissions available.

Any input is appreciated.

2

You have a forward slash at both the end of the base, and the beginning of the “/image.png”.
If this isn’t a typo, it could be lending itself to your problem.

You get:” …/Photos//image.png”

I use full UNC file paths when writing to a webdev mounted folder on a shared network drive.
example: ‘//NetworkHostName/ShareName/Folder/Folder/Folder/’

1 Like
3

Good catch but it was just a typo on my end. I took out some of the details when making the post here.

1 Like
4

This URL like path would happen to evaluate to a real path on Unix-ey systems - literally the path pictured. It doesn't surprise me that Ignition thinks it can write there, though it would slightly surprise me if you actually can write to that path.

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5

You nailed it. Ignition creates that path and writes the file to it.