General Steps
- freeze the database (flush all tables with read lock)
- freeze the file system (xfs freeze)
- take the snapshot
- unfreeze file system
- unfreeze database
Use xfs on EBS and ephermeral volumes (fast to format and supports freezing)
~20MB/sec for a single stream transfer to S3
Snapshots are incremental, compressed and performed in the background by EBS
Snapshots can be corrupt, take them often
No comments:
Post a Comment