Hi all!
I just spent a few hours trying to get mount to work like I wanted it to. I
am not mounting anything special, I just want to add the "acl" option to
whatever disk is mounted at "/". This means that I do not know what the
source is.
I got some help in #ansible on how to get the source. With a little help, I
expanded that to being able to extract pass, dump, and options as well. It
turns out I need *all* of these otherwise the mount module will use the
defaults.
For example, if I want to set passno to 1 and dump was previously set to 2
it will be reset dump to the default value of 0. This is not very ideal.
My full final solution was:
- shell: "grep ' / ' /etc/mtab | awk '{print $1}'"
register: root_device
- shell: "grep ' / ' /etc/mtab | awk '{print $3}'"
register: root_fstype
- shell: "OPTS=$(grep ' / ' /etc/mtab | awk '{print $4}'); if ! $( echo
\"$OPTS\" | tr ',' \"\n\" | grep -qx 'acl' ); then OPTS=$OPTS,acl; fi; echo
$OPTS"
register: root_options
- shell: "grep ' / ' /etc/mtab | awk '{print $5}'"
register: root_dump
- shell: "grep ' / ' /etc/mtab | awk '{print $6}'"
register: root_pass
- mount: name=/ src={{ root_device.stdout }} fstype={{ root_fstype.stdout
}} state=mounted opts={{ root_options.stdout }} dump={{ root_dump.stdout }}
passno={{ root_pass.stdout }}
This works well but I end up getting a bunch of change/update requests
every time since the shell tasks always have to run even if nothing
actually changes.
Here are my questions:
1) Could mount be updated to read in existing values and populate defaults
based on those rather than the current hardcoded defaults?
2) Could mount be smart enough to accept either a name or a source and
guess the rest based on that? Ideally I want to just update the information
for whatever is mounted at "/" since I might not know what the source was
if I have several machines.
3) Is there an easier way to do what I'm doing without making any other
changes? Seems like this is something that should be doable already so
maybe I'm just missing something.
4) If I wanted to try and implement this, would it be better to try and
implement it as another module? I'm thinking maybe "mount_option: name=/
state=present value=acl" to add an option or "mount_option:
source=/dev/sdb2 state=missing value=rw" to remove an option.
Thanks!
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