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lxc.container.conf: document the type: lxc.rootfs conventions
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com> Acked-by: Dwight Engen <dwight.engen@oracle.com>
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@ -876,6 +876,20 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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specified, the container shares its root file system
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with the host.
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</para>
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<para>
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For directory or simple block-device backed containers,
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a pathname can be used. If the rootfs is backed by a nbd
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device, then <filename>nbd:file:1</filename> specifies that
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<filename>file</filename> should be attached to a nbd device,
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and partition 1 should be mounted as the rootfs.
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<filename>nbd:file</filename> specifies that the nbd device
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itself should be mounted. <filename>overlayfs:/lower:/upper</filename>
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specifies that the rootfs should be an overlay with <filename>/upper</filename>
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being mounted read-write over a read-only mount of <filename>/lower</filename>.
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<filename>aufs:/lower:/upper</filename> does the same using aufs in place
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of overlayfs. <filename>loop:/file</filename> tells lxc to attach
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<filename>/file</filename> to a loop device and mount the loop device.
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</para>
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</listitem>
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</varlistentry>
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