util.mount_cb will create an unused temporary directory if the passed `device` is already mounted

[ubuntu-server-builder]

This bug was originally filed in Launchpad as LP: #1885327

Launchpad details

affected_projects = []
assignee = None
assignee_name = None
date_closed = None
date_created = 2020-06-26T19:41:56.797827+00:00
date_fix_committed = None
date_fix_released = None
id = 1885327
importance = wishlist
is_complete = False
lp_url = https://bugs.launchpad.net/cloud-init/+bug/1885327
milestone = None
owner = oddbloke
owner_name = Dan Watkins
private = False
status = triaged
submitter = oddbloke
submitter_name = Dan Watkins
tags = []
duplicates = []

Launchpad user Dan Watkins(oddbloke) wrote on 2020-06-26T19:41:56.797827+00:00

The tmpdir creation happens before (and around, as a contextmanager) the determination of whether or not a mount will be needed. This could be improved.