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If available on the system, Cockpit uses storaged
    to configure and monitor storage, disks, mounts etc. on the
    system. This functionality is present in the Cockpit
    storaged package.
The storaged project is originally based on a project called
    udisks
    and added support for many more features such as
    LVM,
    iSCSI,
    Multipath, and
    BTRFS.
    The same tools and backwards compatible API are available between storaged
    and udisks the projects. Cockpit can use udisks but disables
    many of it's storage related features, including updating /etc/fstab
    and /etc/crypttab for stability reasons.
For non root users, storaged controls access to its APIs via Policy Kit and a user logged into Cockpit will have the same permissions as they do from the command line.
To perform similar tasks from the command line, use the storagedctl command:
$ udisksctl dump
...
To perform LVM tasks, you may use the various LVM commands, such as
    vgcreate, lvresize and so on. Cockpit will detect such changes
    made at the command line.
Cockpit recognizes devices with multiple paths and can start
    the multipathd service in case it is not running.  On
    the command line, you can control multipath features with the
    mpathconf, multipathd, and
    multipath commands.
To manage iSCSI initiators from the command line, you can use
    iscsiadm and related tools.