SYSTEMD-FSCKD.SERVICE(8)                 SYSTEMD-FSCKD.SERVICE(8)

     NAME
          systemd-fsckd.service, systemd-fsckd.socket, systemd-fsckd -
          File system check progress reporting

     SYNOPSIS
          systemd-fsckd.service

          systemd-fsckd.socket

          /lib/systemd/systemd-fsckd

     DESCRIPTION
          systemd-fsckd.service is a service responsible for receiving
          file system check progress, and communicating some
          consolidated data to console and plymouth (if running). It
          also handles possible check cancellations.

          systemd-fsckd receives messages about file system check
          progress from fsck through an UNIX domain socket. It can
          display the progress of the least advanced fsck as well as
          the total number of devices being checked in parallel to the
          console. It will also send progress messages to plymouth.
          Both the raw data and translated messages are sent, so
          compiled plymouth themes can use the raw data to display
          custom messages, and scripted themes, not supporting i18n,
          can display the translated versions.

          systemd-fsckd will instruct plymouth to grab Control+C
          keypresses. When the key is pressed, running checks will be
          terminated. It will also cancel any newly connected fsck
          instances for the lifetime of systemd-fsckd.

     PROTOCOL FOR COMMUNICATION WITH PLYMOUTH
          systemd-fsckd passes the following messages to the theme:

          Progress update, sent as a plymouth update message:
          "fsckd:<num_devices>:<progress>:<string>"

          "<num_devices>"
              the current number of devices being checked (int)

          "<progress>"
              the current minimum percentage of all devices being
              checking (float, from 0 to 100)

          "<string>"
              a translated message ready to be displayed by the
              plymouth theme displaying the data above. It can be
              overridden by themes supporting i18n.

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     SYSTEMD-FSCKD.SERVICE(8)                 SYSTEMD-FSCKD.SERVICE(8)

          Cancel message, sent as a traditional plymouth message:
          "fsckd-cancel-msg:<string>"

          "<strings>"
              a translated string ready to be displayed by the
              plymouth theme indicating that Control+C can be used to
              cancel current checks. It can be overridden (matching
              only "fsckd-cancel-msg" prefix) by themes supporting
              i18n.

     OPTIONS
          The following options are understood:

          -h, --help
              Print a short help text and exit.

          --version
              Print a short version string and exit.

     EXIT STATUS
          On success, 0 is returned, a non-zero failure code
          otherwise. Note that the daemon stays idle for a while to
          accept new fsck connections before exiting.

     SEE ALSO
          systemd(1), systemd-fsck(8), fsck(8), systemd-
          quotacheck.service(8), fsck.btrfs(8), fsck.cramfs(8),
          fsck.ext4(8), fsck.fat(8), fsck.hfsplus(8), fsck.minix(8),
          fsck.ntfs(8), fsck.xfs(8)

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