Part III. Working with DRBD
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This guide describes DRBD version 8.4 and above. For 8.3 please look here.

Part III. Working with DRBD

Table of Contents

6. Common administrative tasks
6.1. Checking DRBD status
6.1.1. Retrieving status with drbd-overview
6.1.2. Status information in /proc/drbd
6.1.3. Connection states
6.1.4. Resource roles
6.1.5. Disk states
6.1.6. I/O state flags
6.1.7. Performance indicators
6.2. Enabling and disabling resources
6.2.1. Enabling resources
6.2.2. Disabling resources
6.3. Reconfiguring resources
6.4. Promoting and demoting resources
6.5. Basic Manual Fail-over
6.6. Upgrading DRBD
6.6.1. Updating your repository
6.6.2. Upgrading the packages
6.6.3. Migrating your configs
6.7. Downgrading DRBD 8.4 to 8.3
6.8. Enabling dual-primary mode
6.8.1. Permanent dual-primary mode
6.8.2. Temporary dual-primary mode
6.8.3. Automating promotion on system startup
6.9. Using on-line device verification
6.9.1. Enabling on-line verification
6.9.2. Invoking on-line verification
6.9.3. Automating on-line verification
6.10. Configuring the rate of synchronization
6.10.1. Permanent fixed sync rate configuration
6.10.2. Temporary fixed sync rate configuration
6.10.3. Variable sync rate configuration
6.11. Configuring checksum-based synchronization
6.12. Configuring congestion policies and suspended replication
6.13. Configuring I/O error handling strategies
6.14. Configuring replication traffic integrity checking
6.15. Resizing resources
6.15.1. Growing on-line
6.15.2. Growing off-line
6.15.3. Shrinking on-line
6.15.4. Shrinking off-line
6.16. Disabling backing device flushes
6.17. Configuring split brain behavior
6.17.1. Split brain notification
6.17.2. Automatic split brain recovery policies
6.18. Creating a three-node setup
6.18.1. Device stacking considerations
6.18.2. Configuring a stacked resource
6.18.3. Enabling stacked resources
6.19. Using DRBD Proxy
6.19.1. DRBD Proxy deployment considerations
6.19.2. Installation
6.19.3. License file
6.19.4. Configuration
6.19.5. Controlling DRBD Proxy
6.19.6. About DRBD Proxy plugins
6.19.7. Troubleshooting
7. Troubleshooting and error recovery
7.1. Dealing with hard drive failure
7.1.1. Manually detaching DRBD from your hard drive
7.1.2. Automatic detach on I/O error
7.1.3. Replacing a failed disk when using internal meta data
7.1.4. Replacing a failed disk when using external meta data
7.2. Dealing with node failure
7.2.1. Dealing with temporary secondary node failure
7.2.2. Dealing with temporary primary node failure
7.2.3. Dealing with permanent node failure
7.3. Manual split brain recovery

This guide describes DRBD version 8.4 and above. For 8.3 please look here.

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5.6. Using truck based replication Home Chapter 6. Common administrative tasks