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For right now, say that you don’t want it to start at boot. You can change that later with dpkg-reconfigure openafs-client. If you have already installed openafs-client and configured it for some other cell, you do need to configure it to point to your new cell for these instructions to work. Stop the AFS client on the system with service openafs-client stop and then run: dpkg-reconfigure openafs-client pointing it to the new cell you’re about to create instead.
Remember, your cell name should be in lowercase. Create an AFS principal in Kerberos. Run kadmin. On the db server, download this key into a keytab. If this is the same system as the KDC, you can use kadmin. In the message that results, note the kvno number reported, since you’ll need it later it will normally be 3. Don’t forget the -e des-cbc-crc:v4 to force the afs key to be DES. You can verify this with: getprinc afs and checking to be sure that the only key listed is a DES key.
If your AFS cell and Kerberos realm have the same name, this is unnecessary. Create some space to use for AFS volumes. You can set up a separate AFS file server on a different system from the Kerberos KDC and AFS db server, and for a larger cell you will want to do so, but when getting started you can make the db server a file server as well.
Run afs-newcell. This will prompt you to be sure that the above steps have been complete and will ask you for the Kerberos principal to use for AFS administrative access. At the completion of this step, you should see bosserver and several other AFS server processes running, and you should be able to see the status of those processes with: bos status localhost -local bosserver is a master server that starts and monitors all the individual AFS servers, and bos is the program used to send it commands.
This tests authenticated bos access as your admin principal rather than using the local KeyFile to authenticate. Run afs-rootvol. This creates the basic AFS volume structure for your new cell, including the top-level volume, the mount point for your cell in the AFS root volume, and the mount points for all known public cells. It will prompt you to be sure that the above steps are complete and then will ask you what file server and partition to create the volume on.
Currently, there isn’t anything in your cell except two volumes, user and service, created by afs-rootvol. Note the trailing periods to prevent the DNS server from appending the origin.
You can, of course, choose what you prefer for the lifetime. The 1 is not a priority; it’s a special indicator saying that this record is for an AFS database server. If you have multiple db servers see below for adding new ones , you should create multiple records of this type, one per db server.
You now have an AFS cell. If any of the above steps failed, please check the steps carefully and make sure that you’ve done them all in order. If that doesn’t reveal the cause of the problem, please feel free to submit a bug report with reportbug.
Include as many details as possible on exactly what you typed and exactly what you saw as a result, particularly any error messages.
Adding Additional Servers If you decide one server is not enough, or if you’re adding a server to an existing cell, here is roughly what you should do: 1. Install the openafs-fileserver package on the new server. The above uses the default fileserver options, however, which are not particularly well-tuned for modern systems. This creates a demand-attach fileserver, which is recommended for new installations. You can also create a regular fileserver if you prefer. If you are using buserver, you will need to do the same thing for it as with ptserver and vlserver.
Note that you do not need to run a file server on a db server if you don’t want to and larger sites probably will not want to , but you always need to have the openafs-fileserver package installed on db servers. It contains the bosserver binary and some of the shared infrastructure.
If you added a new db server, configure your clients to use it. The standard rule of thumb is that all of your database servers and file servers should ideally be running the same version of OpenAFS. However, in practice OpenAFS is fairly good at backward compatibility and you can generally mix and match different versions. Be careful, though, to ensure that all of your database servers are built the same when it comes to options like –enable-supergroups enabled in the Debian packages.
Upgrades Currently, during an upgrade of the openafs-fileserver package, all services will be stopped and restarted. If openafs-dbserver is upgraded without upgrading openafs-fileserver, those server binaries will not be stopped and restarted; that restart will have to be done by hand. Upgrades would then not replace the old binaries, but instead a script will be provided to roll the links forward to the new versions.
The intent is that people could install the new package on all their servers and then quickly move the links before restarting the bosserver.
This has not yet been implemented. Salsa is used only for repository access control and not for any of its other features.
Since we often pull up many upstream fixes from the upstream stable branch due to slow upstream release frequencies, we use Git to handle merging and patch pullups and do not attempt to export the Git repository state as a patch set.
This package uses 3. Ideally, any changes that are not strictly Debian packaging changes should be submitted upstream first. Upstream uses Gerrit for patch review, which makes it very easy for anyone who wishes to submit patches for review using Git.
Starting from OpenAFS 1. Importing a New Upstream Release We want to be able to use Git to cherry-pick fixes from upstream, but we want to base the Debian packages on the upstream tarball releases. This means we follow a slightly complicated method for importing a new upstream release. Follow the following procedure to import a new upstream release: 1. Determine the release tag corresponding to this tarball. This convention may change, so double-check with git tag.
Flesh out the changelog entry for the new version with a summary of what changed in that release, and continue as normal with Debian packaging. Pulling Upstream Changes Upstream releases, particularly stable releases, are relatively infrequent, so it’s often desirable to pull upstream changes from the stable branch into the Debian package.
This should always be done using git cherry-pick -x so that we can use git cherry to see which changes on the stable branch have not been picked up. The procedure is therefore: 0. Identify the hash of the commit that you want to pull up using git log or other information.
Note that the upstream commits on the stable branch will generally already have a line like this from upstream’s cherry-pick. This will be a second line. Add a changelog entry and commit it along with the added patch files.
Dept, University of Stuttgart. KG, Germany. This subroutine takes a command to run in case of failure. OpenAFS for Debian. For an OpenAFS client system, install openafs-client and a kernel. The openafs-client package will. There are also other. If you are using FAM,. Instead of FAM, install. You will want the openafs-fileserver package for a file server and,.
For the complete OpenAFS manual, install openafs-doc. This is the same. The procedure outlined in these two files is much simpler and more. Build Options. The OpenAFS file server has been built with –enable-demand-attach-fs,. Volumes will. This file server mode is. The OpenAFS servers have been built with –enable-supergroups, which.
Be aware that the PT database created by. In other words, if. The OpenAFS client and kernel module have been built with. This support is still experimental and known. Long-time AFS users may be confused by the directory layout. The files. The cache should. The server files have been moved.
The OpenAFS kernel module is named openafs, not libafs, to better match. The Debian source package. The AFS up utility is installed as afs-up, since the standard name is. The libopenafs-dev package only includes static libraries and there are. The shared libraries built by AFS are not. They do not have a stable ABI or an. New AFS cells should use Kerberos v5 rather.
Debugging and Bug Reporting. The current OpenAFS installation process installs fileserver and. For the Debian packages, the fileserver and volserver binaries in the. If it is installed, gdb will find that debugging. Eventually the openafs-dbg package will contain debugging information. When reporting a bug in the OpenAFS client, please include your exact. When reporting a bug in the OpenAFS file server, please include.
If the file server is. The file server is threaded, so use the. You can. If you do want to report a bug directly.
PAM Authentication. There are, of course, many variations depending on what different. I’ve had mixed results. Obviously, converting to Kerberos v5 authentication is.
If you are using the kaserver as your KDC, you may also want to install. Building Kernel Modules. The easiest way to get AFS modules is to install prebuilt modules. Pre-built modules are not provided with Debian building and maintaining. When following any of these methods, be aware that the Debian package. DKMS has some caveats, but it’s the easiest method of building modules.
It provides infrastructure that will automatically rebuild kernel. The OpenAFS kernel modules. Please note that DKMS will only build modules for kernels that have the. Linux headers installed.
When you upgrade your kernel, you need to. If you’re using the. This method is the best method for manually building kernel modules for. Generally, all you should have to do is:. This combines all of the following steps, taking the defaults. If you. If you want to build modules for a different kernel than your currently. Once you’ve finished with. You may prefer to pass module-assistant the -t flag to get more.
If everything works correctly, the openafs-modules. If you have ever previously built a module with module-assistant, always.
OpenAFS can cause serious problems with the resulting module. This method may work better than module-assistant if you’re also. Then, install. Next, unpack openafs-modules-source:. Now, change into your kernel source tree. Debian kernel packages store a copy of their kernel configuration in. The kernel configuration needs to be identical to the configuration that.
Ideally, you would build the. A better approach, if you’re using pre-built kernels, may be to use. Finally, build the modules:. Be aware that. Use dpkg -i to. If you are not already familiar with the basic concepts of. OpenAFS, you should review the documentation at:. This documentation is. AFS administrators may be used to.
In the first column below are the. When setting up a new cell, you should therefore. Creating a New Cell. For documentation on adding a server to an existing cell, see below.
These instructions assume that you are using MIT Kerberos and the. If you are using Heimdal instead, some of the. If you do not have a. Kerberos realm set up already, you can do so in Debian with:. This will install a KDC and kadmind server the server that handles. The name of your Kerberos realm should, for various reasons, be in.
It is traditional and recommended in AFS and for Kerberos to. This is similar to the distinction. If you have not already created such an admin principal for yourself.
Also create a. You’ll be prompted for passwords for both. That line gives you full admin access. You can be more restrictive if you want;. Install the OpenAFS db server package on an appropriate system with:.
As part of this installation, you will need to configure. This name. Enter the name of the local system when prompted. Don’t start the client;. For right now, say that you don’t want it. You can change that later with dpkg-reconfigure. If you have already installed openafs-client and configured it for. Stop the AFS client on the.
If you have had to. In order to complete the AFS installation, you will also need a. Please see:. This is the AFS service. And that’s it. Now you can commit your large files, and GitHub will automatically track which ones get sent over to LFS.
With more than 10 years of experience in gaming, mobile and spatial computing, Matt focuses on bringing the latest virtual, augmented and mixed reality solutions to enterprise clients.
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Being a Unity3D developer, I’m used to some of the hindrances to Unity, including compression qualities, native embedding issues and the topic of this article: large file storage. Our Git clients were also not impressed with these files. For our purposes, we usually use a GitLab setup in-house, but for the purpose of this system, we tested it with GitHub and Sourcetree.
The issue As my scenes and assets grew, so did the file sizes: 3D assets, movies files, large degree photos. How to The process of getting these files to the large file storage is fairly simple to set up. Then this popup shows up.
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For the casual or new user the simplest is to get a packaged version for your distribution. • Optionally configure wine using the winecfg command. Wine should. job stream fails. You can create a Java plug-in to perform this service, implement it in Tivoli Workload Scheduler and combine it in an event rule with the.
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