Backup System

Policy

Target

List of directories to obtain the backup.

• k1boot
  • /opt
  • /diskless/root
• k1nfs0
  • /export/apps
  • /export/ligo
  • /export/kagra
  • /export/users

Method

• k1boot
  • backup to k1bck0 by using borg
• k1nfs0
  • backup to k1bck0 by using borg
  • backup to local HDD by using rsync

How to backup

Initialization

# borg init -e none /BACKUP_DIR

Backup from source directory

# borg create /BACKUP_DIR::ARCHIVE /SRC

ARCHIVE is name of archive in this time.

Daily

• Once a day the script is executed by cron.
• The script is located at /root/bin/backup_borg.sh
• This script performs backup and organizing past backups.

Policy of prune backup

1. Keep the last seven days of backups
2. Keep the latest backup on each week, up to 8
3. Keep the latest backup on each month, up to 36

Check backup status

• Assign repository

  # borg list /BACKUP_DIR

  This command displays the list of archives.
• Assign archive

  # borg list /BACKUP_DIR::ARCHIVE

  This command displays the list of directories and files of this archive.

Restore from backup

1. Mount disk on k1bck0
2. Change directory to mounted disk
3. Start restore

   # borg extract /BACKUP_DIR::ARCHIVE

   This command write backup data to the current directory.

Mount from backup

1. Mount disk on k1bck0

   $ sudo brog mount /zbackup/BACKUP_DIR::DATE {MOUNT_DIR}

2. Unmount disk

   $ sudo brog umount {MOUNT_DIR}

Backup Japanese

Maintenance

OS update

# freebsd-update fetch
# freebsd-update install
# pkg upgrade
# reboot

Installation

1. Install FreeBSD 11
2. Install packages

   # pkg install tmux py36-borgbackup

3. Configuration
   1. SSH

      /etc/rc/conf
      sshd_enable="YES"

   2. NFS & autofs

      /etc/rc.local
      nfs_client_enable="YES"
      autofs_enable="YES"

      /etc/auto_master
      /-              -noauto

      /etc/fstab
      # NFS
      k1nfs0:/export/users    /export/users   nfs     ro,noauto       0       0
      k1nfs0:/export/ligo     /export/ligo    nfs     ro,noauto       0       0
      k1nfs0:/export/apps     /export/apps    nfs     ro,noauto       0       0
      k1nfs0:/export/kagra    /export/kagra   nfs     ro,noauto       0       0
      k1boot:/opt     /export/opt     nfs     ro,noauto       0       0
      k1boot:/diskless/root     /export/root     nfs     ro,noauto       0       0

4. Create RAID

   # zpool create zbackup raidz2 ada1 ada2 ada3 da0 da1
   # zpool status
     pool: zbackup
    state: ONLINE
     scan: none requested
   config:
   
           NAME        STATE     READ WRITE CKSUM
           zbackup     ONLINE       0     0     0
             raidz2-0  ONLINE       0     0     0
               ada1    ONLINE       0     0     0
               ada2    ONLINE       0     0     0
               ada3    ONLINE       0     0     0
               da0     ONLINE       0     0     0
               da1     ONLINE       0     0     0
   
   errors: No known data errors

5. Reboot

   # reboot

Monitor

EPICS IOC

• Working on k1script1
• Directory: /opt/rtcds/kamioka/k1/target/k1sys/

Script

• /kagra/bin/SYS/backup_status.sh
• Run daily at 9:00 am

HDD list

HDD list