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--- services:cephfs [2023/06/08 17:05]
pdonnell created
+++ services:cephfs [2026/08/26 17:07] (current)
pdonnell
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-test
+====== CephFS ======
+There are a few CephFS file systems available in the sepia lab. These reside on the [[services:shortrunningcluster|Short Running Cluster]]. Before the 2026 move, the file systems were on the [[services:longrunningcluster|Long Running Cluster]].
+Access to the [[services:shortrunningcluster|Short Running Cluster]] Ceph cluster is available for any machine on the [[:vpnaccess|sepia VPN]]. You can and **should** mount these file systems on your laptop or development machine. This reduces load on some shared machines, like [[services:teuthology|teuthology]], and usually provides faster access depending on your client or network. However, for everyday use, you may prefer to access CephFS from a machine co-located with the other lab infrastructure, such as a [[:devplayground|Developer Playground]] machine, where OSD latency/bandwidth will be optimal.
+To run the below playbooks, you need to be [[:vpnaccess#requesting_access|given access to the sepia VPN]], the ssh key you shared should allow accessing this machine.
+Please run the Ceph organization private [[https://github.com/ceph/ceph-devplayground|ceph-devplayground ansible playbook]] to configure a node to mount the below CephFS file systems.
+==== The teuthology FS ====
+The majority of CephFS use is directed at the “teuthology” file system which hosts QA artifacts for analysis. Each test run has a directory in ''/teuthology-archive'' which is mounted at ''/teuthology''. There is usually a ''/a'' symlink present pointing to ''/teuthology''.
+==== The scratch FS ====
+This is a general purpose file system for "scratch" space. Do what you want with it but consider all data in it as eligible for deletion at any time. You're encouraged to create a personal top-level directory.
+==== The postfile FS ====
+The [[https://docs.ceph.com/en/latest/man/8/ceph-post-file/|ceph-post-file]] utility dumps results in this file system. Users are encouraged to use this utility to share artifacts with Ceph developers.
+==== The home FS ====
+There is a "home" file system which hosts the home directories of users of teuthology and potentially other development nodes. Its access is restricted to administrators.

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