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Questions tagged [openafs]

An open implementation of the Andrew File System (AFS). AFS is a distributed filesystem designed to provide a single file system tree for different participating organizations, potentially spread out across the globe.

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Is it practical to keep home directories on OpenAFS?

I am a sysadmin by trade, and I do what I do at work at home as well for fun. I have a Gentoo Linux laptop, Raspberry Pis running Raspian, a Gentoo server, ARM devices running Debian and have various ...
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pam_afs_session: what does “PAG apparently lost” message in syslog mean?

We access our Debian Linux servers with ssh using GSSAPI. The servers run OpenSSH and take advantage of the pam-stack. In particular, they use pam_afs_session. Every once in a while I see the ...
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1answer
93 views

AFS filesystem volume name length

As far as I know there is/was a limitation for AFS volume name length so one can practically use 22 characters only (we use read only volumes as well so we need to fit into the 31 char limit with ...
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1answer
43 views

How do I get true caller access rights for a directory in afs?

According to the openAFS docs, fs getcalleracces some_path should give me my effective rights to "some_path". When I run this command on some directories I get Callers access to . is rlidwk While ...
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1answer
574 views

NFS vs AFS cache validation

NFS clients revalidate cache blocks on access by evaluating T-Tc < t. If this fails it sends a getattr call to the NFS server asking for the last Tmodified stamp of the relevant file. AFS ...
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1answer
418 views

Can OpenAFS be used as NFS?

I have an application that only runs on Linux, which will generate ~500TB of data over the next year, which all must be kept and backed up each day. It would be temping to go with ZFSonLinux or btrfs,...
4
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2answers
257 views

Distributed storage [closed]

At my University Department we are about to upgrade the computers of our student lab (about 25-30 machines). The machines will be running Linux. One thing about the new machines is that they have ...
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1answer
192 views

How do I find out the current remaining lifetime of my AFS tokens?

I can use klog to renew my AFS token, but I am wondering whether there is an equivalent command to view the remaining lifetime of my AFS token.
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1answer
213 views

finding directories that consume a lot of the AFS volume quota

The AFS volume quota is almost exceeded for one of our computer users. Running fs listquota or fs lq gives him a warning: olifri@ubuntu:~$ fs listquota ~ Volume Name Quota ...
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1answer
160 views

OpenAFS on OpenVZ guest

I'm trying to install and configure an OpenAFS server inside an OpenVZ container. However, when running afs-newcell, it complains that the AFS client cannot be started. It says "AFS module /lib/...
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1answer
140 views

Sudden catastrophic failure of kerberos

I've been playing with my openAFS setup, and adding keys for the afs principle for kerberos. Now, suddenly, Kerberos has gone down (or something). Kadmin gives the following error: kadmin -p admin ...
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2answers
1k views

In search of a network file system with extended caching to speed up file access

I'm running a small home server that stores my documents. The disks in this server are in a RAID 1 configuration (using Linux md) and it's also periodically being backed up to an external hard drive ...
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5answers
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Networked filesystem with user level security for linux

I want to enable file sharing between servers and clients, both linux. I don't want to rely on machine trust like in NFSv4 because client users will have root privileges. What are my options besides ...
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3answers
2k views

OpenAFS on Fedora/CentOS

I am trying to see if OpenAFS fits my needs as a distributed filesystem and is a bit stuck. There are docs but they're all quite hard to understand, so asking for some expert advice here. My questions:...