k-space/rawfile-localpv
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Mehran Kholdi b2c4b77911 Implement STAGE_UNSTAGE_VOLUME capability 
Summary: Before this, we directly mounted the the rawfile on the mountpoint. In this revision the `STAGE_UNSTAGE_VOLUME` capability is implemented, meaning that the volume is first mounted to a staging path, and then `bind`-mounted to the actual path. This way we can free up loopback devices when they are not needed.

Test Plan:
- Create a pvc, and use it inside a pod
- Run `losetup -l` on the node running the pod, and assert the creation of a loop device
- Delete the pod, but not the pvc
- Run `losetup -l` on the same node, and assert the removal of the loop device

Reviewers: h.marvi, bghadiri

Differential Revision: https://phab.hamravesh.ir/D806
2020-05-31 13:23:10 +04:30
csi Autogen csi grpc interface 2020-04-24 00:08:36 +04:30
deploy/charts/rawfile-csi Implement STAGE_UNSTAGE_VOLUME capability 2020-05-31 13:23:10 +04:30
orchestrator Use immutable tags for running tasks 2020-05-29 21:04:40 +04:30
protos Autogen csi grpc interface 2020-04-24 00:08:36 +04:30
templates Use immutable tags for running tasks 2020-05-29 21:04:40 +04:30
.dockerignore Configure CI 2020-04-24 19:35:37 +04:30
.gitignore Autogen python gitignore 2020-04-23 04:18:53 +04:30
.gitlab-ci.yml Use immutable tags for running tasks 2020-05-29 21:04:40 +04:30
consts.py Use immutable tags for running tasks 2020-05-29 21:04:40 +04:30
Dockerfile Pin base image version 2020-05-31 13:20:15 +04:30
metrics.py Hardcode block size as 512 instead of using blksize! 2020-04-26 02:02:00 +04:30
rawfile_servicer.py Implement STAGE_UNSTAGE_VOLUME capability 2020-05-31 13:23:10 +04:30
rawfile_util.py Implement STAGE_UNSTAGE_VOLUME capability 2020-05-31 13:23:10 +04:30
rawfile.py Use immutable tags for running tasks 2020-05-29 21:04:40 +04:30
README.md Add installation and usage instructions to readme 2020-04-28 22:54:38 +04:30
remote.py Store metadata file 2020-04-26 01:37:23 +04:30
requirements.in Implement basic metrics 2020-04-26 02:02:00 +04:30
requirements.txt Implement basic metrics 2020-04-26 02:02:00 +04:30
util.py Handle attaching loop devices instead of handing it to mount 2020-04-26 02:01:42 +04:30

README.md

RawFilePV

Kubernetes LocalPVs on Steroids

Install

helm install -n kube-system rawfile-csi ./deploy/charts/rawfile-csi/

Usage

Create a StorageClass with your desired options:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: my-sc
provisioner: rawfile.hamravesh.com
reclaimPolicy: Delete
volumeBindingMode: WaitForFirstConsumer

Features

  • Direct I/O: Near-zero disk performance overhead
  • Dynamic provisioning
  • Enforced volume size limit
  • Thin provisioned
  • Access Modes
    • ReadWriteOnce
    • ReadOnlyMany
    • ReadWriteMany
  • Volume modes
    • Filesystem mode
    • Block mode
  • Volume metrics
  • Supports fsTypes
  • Online expansion: If fs supports it (e.g. ext4, btrfs)
  • Online shrinking: If fs supports it (e.g. btrfs)
  • Offline expansion/shrinking
  • Ephemeral inline volume
  • Snapshots: If the fs supports it (e.g. btrfs)