How do I tackle with the "[Errno 30] Read-only file system" error, while trying to open an xlsx in a firebase cloud function?

Question

I am trying to attach this fileX to an email using a python-based cloud-function. The code runs fine on localhost while it gives this error when I deploy the cloud-function: [Errno 30] Read-only file system: 'fileX.xlsx'

Have tried writing to the /tmp directory in google cloud storage, but to no resolve.

    df_en.to_excel(writer, sheet_name='en')
    df_hi.to_excel(writer, sheet_name='hi')
    writer.save()

    filename = "fileX.xlsx"
    attachment = open("/tmp/fileX.xlsx", "r+b")

If it's read-only, open it for reading only. `r+` means both reading and writing. — h4z3, May 27 '19 at 09:26

score 1 · Answer 1 · answered May 27 '19 at 09:38

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Depending on your need, you can either change your file's permissions in order to make it both readable and writable or change the way you attach it by changing the "r+b" in "r".

answered May 27 '19 at 09:38

AdriBento

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score 0 · Answer 2 · answered Aug 16 '21 at 10:46

0

Google Cloud Functions runtime is read-only except for /tmp.

Take a look at Google Clould Functions deploy: EROFS: read-only file system

answered Aug 16 '21 at 10:46

Crispy Holiday

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How do I tackle with the "[Errno 30] Read-only file system" error, while trying to open an xlsx in a firebase cloud function?

2 Answers2