Known issues with Bedrock Linux 1.0alpha1
- The Perfect Linux Distribution
- /etc/ file sync issue
- Difficulty Statically Compiling
- Man pages do not work across clients
- Debian-based clients: statoverride
- /usr-move'd Clients
- Pacman Filesystem Warnings
- Mount warnings on boot
/etc/ file sync issue
The bind mount sharing system does not allow moving or
renaming on top of mount points. This is a primarily an
issue with files such as
most common ways to update such files involve creating a
temporary new file and move/renaming it over the old one.
This is advantageous as it minimizes the window of time in
which something could go wrong and leave a malformed
/etc/passwd. However, it does not function
with bind mount sharing. One cannot share all of
/etc, as other files in there need to be
unique per client. One can manually update these files,
either by simply editing them with a text editor or by
updating them in core Bedrock Linux. This issue is
particularly troubling when packages in clients attempt to
create users or groups. For the time being, one must
manually add the users/groups in a way which does not
conflict with the bind mount issue and then re-run the
package installation command in the clients.
Possible Solution: This problem is particularly troubling when packages try to add users or groups to shared /etc/passwd and /etc/group. Perhaps we could just ensure that the users/groups are already there, so there is no need to add them. This would require building a database of all possible users/groups that could be added by any package in any distro.
Possible Solution: Look into unionfs-fuse as possible solution.
Difficulty Statically Compiling
Difficulty statically compiling busybox and capchroot have been noted, somewhat dependent on the client/installer host used. This is caused by conscious limitations placed in libraries available in many Linux distributions, particularly glibc.
Possible Solution: Use uclibc to build busybox and capchroot. The downside is that this requires significantly more work for distros which do not have uclibc readily accessible. Look into buildroot.
Man pages do not work across clients
No work has yet been done to ensure man pages work across clients. This might be a single bind mount away from working.
Debian-based clients: statoverride
Occasionally, apt/dpkg will complain about issues with
"statoverride". This most likely occures because it expects
a daemon should be running, but it is not. This can be fixed
in this instance by simply removing the contents of
/var/lib/dpkg/statoverride. Simply leave an
empy file in that location. This may come up repeatedly - no
work has yet been done to find a permanent solution.
A growing number of Linux distributions (such as Arch Linux
and Fedora) have moved many of the root-level directories
/usr. To enable backwards compatibility,
they have symlinked the root-level directories into the
/usr directories. For example,
/lib is now symlinked to
Sadly, Bedrock Linux 1.0alpha1 does not properly handle
bind-mounts into symlinked directories. This means one
cannot use bind-mounts to share
with clients who have undergone the
/usr/lib/modules can be shared just
fine. If all of the clients have been
/usr-moved, one can simply share the directories
/usr However, if one is using a mix of
/usr-moved and non-
clients, difficulties arise. Try simply copying these
directories every time one is updated.
Pacman Filesystem Warnings
Arch Linux's package manager, pacman, attempts to detect if there is sufficient free disk space available before installing or updating packages. However, it fails to successfully do so under this version of Bedrock Linux. So long as sufficient disk space is in fact available, these warnings can be safely ignored.
Mount warnings on boot
DEVICE_MANAGER=udev, one will receive (harmless)
warnings on boot. It is safe to ignore these warnings. This
has been fixed in upcoming versions of Bedrock Linux.