You have just executed a manual backup by using this command:
mysqlbackup -u root -p --socket=/tmp/my.sock --backup-dir=/my/backup/ backup
The operation completed without error.
What is the state of this backup and operation required before it is ready to be restored?
A. Backup State = Compressed Backup; Operation = copy-back
B. Backup State = Raw Backup; Operation = apply-log
C. Backup State = Prepared Backup; Operation = validate
D. Backup State = Prepared Backup; Operation = apply-log
E. Backup State = Raw Backup; Operation = backup-dir-to-image
Answer: B
默认 compress 是关闭的,所以 backup state 不是 compressed 的
对于初始的 backup 产生的记录应当是初始记录的,需要使用 apply-log 来使得备份同步
备份其实主要的内容也就是 backup、 restore 和校验。 每个阶段使用的主要参数如下：
· Backup operations: backup, backup-and-apply-log, backup-to-image
· Update operations: apply-log, apply-incremental-backup
· Restore operations: copy-back, copy-back-and-apply-log
· Validation operation: validate Single-file backup
· operations: image-to-backup-dir, backup-dir-to-image, list-image, extract
