This repo contains zbase 1.9 multi-vbuckets mode incremental backup, restore and blobrestore tools.

ZBase incremental backup system consists of vbucket level backup server, vbucket restore script, backup merge daemon and blobrestore utilities. Backup daemon runs on storage servers. It contacts vbucketserver and diskmapper to obtain vbucket to zbase server mapping as well as vbucket to storageserver-disk mapping. Every one hour interval, backup daemon connects to zbase servers and all vbuckets are backed up from replica vbucket. A backup merge scheduler runs on all the storage server, which merges and deduplicate incremental backups for the day and converts to daily backups. Every seven days, last seven daily backups are merged to form a master backup. In an event of server down/vbucket down, restore script is executed. The restore script contacts the diskmapper to find out the corresponding storage server and downloads master backup, daily backups and recent incremental backups and performs server/vbucket level restore. The blobrestore utilities provide a way to restore individual blobs to a given date or nearest available backed up time in an event of blobcorruption or for debugging purpose. A blobrestore client is available with this package which can issue a distributed job among storage servers and consolidate the result.

Build package rpm
$ make

Backup tools requires finite amount of tmpfs for its operation. This is an
optimization to avoid disk read/write operations and parallel upload/download.
This package is installed on storage servers as well as zbase servers

Create tmpfs partition
# mkdir /db_backup
# mount -t tmpfs none /db_backup

Install package
# rpm -i zbase-backup-tools.rpm

Edit config
# vim /etc/zbase-backup/default.ini

Storage server setup
# /etc/init.d/zbase_backupd start
# /etc/init.d/backup_merged start
# /etc/init.d/blobrestored start

ZBase server - for restore
# /opt/zbase/zbase-backup/zbase-restore

Backup tools v2.0 has a bit different architecture. IBR 2.0 (Incremental Backups and Restore) operates on server level rather than vbucket level restore. Backup daemon runs on each of the zbase servers. Storage servers run merge daemon and blobrestore daemon. Blobrestore client can be run from anywhere by installing zbase-backup-tools package.