buildah-mount(1) General Commands Manual buildah-mount(1)
NAME
buildah-mount - Mount a working container's root filesystem.
SYNOPSIS
buildah mount [container ...]
DESCRIPTION
Mounts the specified container's root file system in a location which
can be accessed from the host, and returns its location.
If the mount command is invoked without any arguments, the tool will
list all of the currently mounted containers.
When running in rootless mode, mount runs in a different namespace so
that the mounted volume might not be accessible from the host when using
a driver different than vfs. To be able to access the file system
mounted, you might need to create the mount namespace separately as part
of buildah unshare. In the environment created with buildah unshare you
can then use buildah mount and have access to the mounted file system.
RETURN VALUE
The location of the mounted file system. On error an empty string and
errno is returned.
OPTIONS
--json
Output in JSON format.
EXAMPLE
buildah mount working-container
/var/lib/containers/storage/overlay2/f3ac502d97b5681989dff84dfedc8354239bcecbdc2692f9a639f4e080a02364/merged
buildah mount
working-container /var/lib/containers/storage/overlay2/f3ac502d97b5681989dff84dfedc8354239bcecbdc2692f9a639f4e080a02364/merged
fedora-working-container /var/lib/containers/storage/overlay2/0ff7d7ca68bed1ace424f9df154d2dd7b5a125c19d887f17653cbcd5b6e30ba1/merged
buildah mount working-container fedora-working-container ubi8-working-container
working-container /var/lib/containers/storage/overlay/f8cac5cce73e5102ab321cc5b57c0824035b5cb82b6822e3c86ebaff69fefa9c/merged
fedora-working-container /var/lib/containers/storage/overlay/c3ec418be5bda5b72dca74c4d397e05829fe62ecd577dd7518b5f7fc1ca5f491/merged
ubi8-working-container /var/lib/containers/storage/overlay/03a071f206f70f4fcae5379bd5126be86b5352dc2a0c3449cd6fca01b77ea868/merged
If running in rootless mode, you need to do a buildah unshare first to
use the mount point.
$ buildah unshare
# buildah mount working-container
/var/lib/containers/storage/overlay/f8cac5cce73e5102ab321cc5b57c0824035b5cb82b6822e3c86ebaff69fefa9c/merged
# cp foobar /var/lib/containers/storage/overlay/f8cac5cce73e5102ab321cc5b57c0824035b5cb82b6822e3c86ebaff69fefa9c/merged
# buildah unmount working-container
# exit
$ buildah commit working-container newimage
SEE ALSO
buildah(1), buildah-unshare(1), buildah-umount(1)
buildah March 2017 buildah-mount(1)
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