Zfs replication overview
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This document provides an overview of ZFS replication. It describes the setting and flow, including connecting the primary and secondary systems, creating snapshots on the primary, and using zfs send and receive commands over SSH to replicate snapshots from the primary to the secondary. Software components include utilities for rsync, SSH, and managing ZFS replication through APIs. A simple demonstration shows generating an SSH key, copying it to the secondary, taking a snapshot, and replicating it.
![Step3: Execute zfs Command
Primary Secondary
Snapshot A
Snapshot B
Snapshot C
ZFS Replication
Pool
Command:
zfs send [shapshot]
| ssh –o StrictHostKeyChecking=no IP zfs receive [dataset Path]
zfs send –i [shapshot1] [snapshot2]
| ssh –o StrictHostKeyChecking=no IP receive [dataset Path]](https://image.slidesharecdn.com/zfsreplicationoverview-210226054209/85/Zfs-replication-overview-7-320.jpg)
Zfs replication overview
- 2. Outline 1.Overview 2.Setting && Flow 3.Software Block Diagram 4.AP&&EXE FUN 5.Simple Demo
- 3. Overview Primary Secondary Snapshot A Snapshot B Snapshot C ZFS Replication Pool Based on Snapshot
- 4. Setting && Flow Primary Secondary Command: zfs send zpxxx/dsxxx@sn01 | ssh –o StrictHostKeyChecking=no IP zfs receive zpxxx/dsxxx Step1: Connect Setting Use rsync transfer primary public key to secondary authorized_keys. Step2: Create Snapshot Primary create snapshot which do replication. Step3: Execute zfs command Execute zfs replication command.
- 5. Step1:Connect Setting Primary 1.Install rsync 2.Setting rsync.secrets setting the secondary rsync password in primary rsync.secrets. 1.Install rsync 2.Setting rsync.conf and rsync.secrets (/etc/..) rsync connect setting. 1.Rsync Setting Use ssh-keygen generator public key ssh-keygen -t rsa (/root/.ssh/id_rsa.pub). 2.Primary generator the public key. 3.Primary use rsync command to transfer public key Secondary
- 6. Step2: Create Snapshot Primary Secondary Snapshot A Snapshot B Snapshot C ZFS Replication Pool Command:zfs snapshot zpxxx/dsxxx@snxx
- 7. Step3: Execute zfs Command Primary Secondary Snapshot A Snapshot B Snapshot C ZFS Replication Pool Command: zfs send [shapshot] | ssh –o StrictHostKeyChecking=no IP zfs receive [dataset Path] zfs send –i [shapshot1] [snapshot2] | ssh –o StrictHostKeyChecking=no IP receive [dataset Path]
- 8. Software Block Diagram Connect Setting RPC Exe Fun Put public key to remote SSH Exe Fun Gen Public Key ZFS AP Snapshot Replication Remote Host ~/.ssh/authorized_keys ssh command zfs send && zfs receive sshkey transfer
- 9. AP&&EXE FUN •RSYNC EXE rsync_exe.py •SSH EXE ssh_exe.py •ZFS REPLICATION AP stor_rep_add.py stor_rep_list.py
- 10. Simple Demo Primary Execution: ssh-keygen -t rsa
- 11. Simple Demo Primary Execution: Primary copy id_rsa.pub to secondary
- 12. Simple Demo Primary Execution: zfs snapshot zp146093/ds808450@sn01
- 13. Simple Demo Primary Execution: zfs send zp146093/ds808450@sn01 | ssh -p 234 10.88.3.91 zfs receive zp712879/ds80845
- 14. ＥＮＤ
- 15. Software Block Diagram Connect Setting RSYNC Exe Fun Put public key to remote SSH Exe Fun Gen Public Key ZFS AP Snapshot Replication Remote Host ~/.ssh/authorized_keys ssh command zfs send && zfs receive Rsync transfer