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Thread: How to configure NTFS-3G to always be in read only mode

  1. #1

    Default How to configure NTFS-3G to always be in read only mode


    Hi All,

    Firstly I'm not really a Linux expert by any stretch but SUSE Studio has
    made my life easier. I'm using it to build a recovery CD. Every is
    working perfectly except the servers that I need to recover from will
    always be in a crash persistent state. NTFS-3G complains when accessing
    these partitions saying it can only access them in read only mode.
    Since I'm accessing these NTFS formatted drives via Dolphin file manager
    everything is pretty much automatic. How can I make changes so that
    NTFS-3G is always accessing these drives in read only mode. Ideally I'd
    like to be in read only mode as the default which the option to change
    it to Read/Write if needed. Since the end users are likely to be non
    technical, these has to be as simple as possible. From what I've seen
    it looks like I need to make changes to the udisks policy?

    Many thanks for any help you can give.

    Regards


    --
    leonardpowers
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  2. #2
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    Default Re: How to configure NTFS-3G to always be in read only mode

    First, welcome to the openSUSE Forums. The udisks2 mount options are hard-coded, leaving your only real options to override the mounting options by using entries in /etc/fstab or perhaps systemd mount units.

    It may be possible to use a udev rule with suitable match attributes and setting the environment variable 'ENV{UDISKS_MOUNT_OPTIONS}="ro"' eg
    Code:
    ENV{ID_FS_TYPE}=="ntfs" , ENV{UDISKS_MOUNT_OPTIONS}="ro"
    however I don't have experience with doing this so uncharted territory.

    https://wiki.archlinux.org/index.php..._.28udisks2.29

  3. #3
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    Default Re: How to configure NTFS-3G to always be in read only mode

    From an Administration and solution architecture perspective,
    Managing access permissions on every individual client machine is both extra unnecessary work and subject to mistakes, possibly leading to an eventual real problem.

    It's standard "Best Practice" to configure access permissions on the Server, and leave the clients in their default configuration unless absolutely necessary.

    I'm guessing that your remote files are being served from a Windows machine, and that you're using Windows File Sharing?

    If that is the case, then depending on whether you are implementing Network Security like Active Directory (I'm to guess you're not) or simple Workgroup File Sharing,

    The simplest solution to set no restrictions at the file level and set your permissions <only> at the file sharing level. You can configure combinations of file level and Share permissions, but that's not advisable in more than 95% of all scenarios I've dealt with.

    At the Share permissions level, set and existing or create a new User Group that has read only permissions. All ordinary Users who need only read only access will use a User Account that is made a member of this User Group.

    Create another or assign an existing User Group with Full Control, ie Read/Write access. User Accounts that will upload and manage (write, delete, change, etc) files are made members of this Group.

    When you have the above set up, you won't have to change a thing when configuring access by any User on any machine in your network.

    Also, note that Share permissions only apply to Users who access your Shares and files from another machine. Anyone who can logon to the Windows machine itself will not be affected by the Share permissions and will have access determined only by the File level permissions.

    HTH,
    TSU
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