This page serves to describe plans for the then-upcoming release of Bedrock Linux, 1.0alpha4 "Flopsie". Flopsie has since been released on 2013/12/30. The following is thus out-of-date, but is kept in case anyone is curious.
All public releases of Bedrock Linux prior to Flopsie have been unable to
properly share several files in
/etc such as
work-arounds have been available but are unsatisfactory in the long term.
Flopsie will include a new FUSE union filesystem (tentatively named "brf")
which should be able to properly handle the /etc issue situation. In theory
this new filesystem could completely replace bind-mounts for Bedrock Linux and
significantly simplify the mount table; however, brf will likely have a
non-negligable performance overhead and is thus only current intended to patch
corner-cases in which bind-mounts are insufficient.
Most of Bedrock Linux's development time has gone towards how it works under-the-hood. Aspects of installation have been extremely low priority. Flopsie will being the efforts to turn this around. It will include a POSIX shell script which will automate some of Flopsie's installation steps. To aid this, several things which were previously up to the end-user will now be standardized. This includes the standard C library for core components (planned to be musl) and the installation location for clients (planned to be /bedrock/clients/)
brs will be updated to include the following capabilities:
brgbelow this should make it relatively easy to spin up a new client.
bri will be updated to include the follow changes:
briwill be able to indicate which client is providing a given process
briwill be able to list all of the process provided by a given client.
As of Bosco,
brw is just a short alias to
bri -n; that is,
indicate which client provides calling program (usually a shell). Flopsie will
brw be an alias for
bri -w (or
-W) if at least one argument is
provided so that
brw will indicate which client will provide a
given executable, since this, like
bri -n, is very commonly used.
Flopsie will include a new Bedrock Linux utility,
brg, which can be used to
acquire a new client. For example (syntax still tentative):
brg debian 6.0 amd64 wheezy
Could be used to install a x86_64 Debian 6.0 client in
This will hopefully be able to get the client from one of the following
Note that it will only provide a client available from sources which are available. If you'd like to install a Linux distribution which is not provided from one of the above sources, you will have to fall back to installing it manually (such as via its normal installation method on another partition or in a VM and then copying the contents out).
The current release of Bedrock Linux, 1.0alpha3 "Bosco", requires users run the
brp utility every time an executable is added or remove from the system.
Bosco also lacks the ability to cleanly ensure that a given executable is always provided by a given client, or that a given executable is always provided only locally.
Flopsie plans to address both of these issues with a new
will be a FUSE filesystem that will effectively populate the brpath directories
on-the-fly and thus always be up-to-date. It will be configurable to ensure a
listed executables are always provided by a given client or never provided
through the brpath system at all.
Additionally, Bosco does not have a clean way to ensure a given executable is
always provided by the same client, irrelevant of what the client may have
natively. These two issues will be addressed with a FUSE virtual filesystem .
It will be mounted at
/bedrock/brpath/ and have something along the following
root-level directory structure:
To improve performance, the contents of the configuration files this new
will utilize will be cached rather than re-read as needed. Thus manual work is
necessary to inform a mounted
brp filesystem that their contents have
changed. Something like this is expected:
echo 1 > /bedrock/brpath/reparse_configs
There were prior plans to include a virtual filesystem which can be accessed to get information about Bedrock-related systems akin to procfs or sysfs. However, this is no longer planned for Flopsie. It may or may not be picked up again in another release.