Preliminary information

• The backup scripts are stored in /u3/scripts;

• The log files for these scripts are stored in /u3/scripts/logs; These logs are rotated on dafnenfs from logrotate (check last point);

• The script u2_backup.sh is responsible to create a backup of /u2 in /u3/u2_backup and launch nfs_rsync.sh script to rsync data to nascoda1. The u2_backup.sh script is launched by crontab on host dafnenfs every day (see Table 2 for details). The script sends an e-mail to andrea.michelotti@lnf.infn.it francesco.galletti@lnf.infn.it to notify the exit status.
• The script nfs_rsync.sh is responsible to rsync the data from the host where it is launched to nascoda1. It sends an e-mail to andrea.michelotti@lnf.infn.it francesco.galletti@lnf.infn.it to notify the backup exit status. It is launched by crontab on host danteweb and vldafneafp every day (see Table 2 for details);
• The host dafnenfs share /u3/scripts; danteweb and vldafneafp mount that folder via NFS on boot (folder present in /etc/fstab);
• The host dafnenfs has a custom configuration for logrotate present in /etc/logrotate.d/nfs_rsync to rotate log files generated by these scripts. It will rotate all log files every day, keeping them compressed in /u3/scripts/logs/old folder for 5 days.

Git repository for backup scripts

Data

Control system data was saved in a Sun Storagetek 2550 Disk Array (LAT room) connected with two fiber optic paths to beatrix and virgil, the old production cluster. Now it's all stored and exported to us from the IT department of LNF; These are the folders in which data is organized: 

 Page under construction 

Dati

I dati del sistema di controllo sono salvati all'interno del Disk Array Sun Storagetek 2550 installato in sala LAT e connesso con doppio path in fibra ottica verso ognuno dei due nodi del cluster di produzione, virgil e beatrix. I folder condivisi dal cluster e da salvare su backup sono i seguenti:

Configurazioni

Le configurazioni da salvare sono le seguenti:

Date ed orari di backup

I crontab di backup sono i seguenti:

...

Table 1 - data folders

Backup planning

Backup crontab are planned as Table 2 reports:

Table 2 - Backup planning

Snapshot and replica

Backups are planned on

*eseguito solo dal nodo attivo del cluster

Snapshot e repliche

I backup sono effettuati sul NAS nascoda1.lnf.infn.it (Sala LAT ) e replicati sul NAS nascoda2room) and rsynced on NAS nasda.lnf.infn.it (Laboratorio Controlli, Ed. Control Lab, Building 2, Stanza Room 117) con il seguente schema (comprensivo di snapshot dei singoli volumi)with following planning:

Backup manuale mensile

Table 3 - Snapshot and replica planning

Recover data from backup

Read this documentation page.

Backup on disaster recovery USB disk

Image AddedDisaster recovery diskImage AddedBackup notes

To backup DCS from nasda to the disaster recovery disk, this is the procedure to be executed:

1. Connect the disk to the front usb port of nasda and wait for the blue usb led to become steady on;
2. Keep pressed the "Copy" button in front of nasda for about 3 seconds, then release the button and check that the blue usb led begins to blink and a single beep coming from nasda. When the backup is finished, the blue usb led will be steady on;
3. To safely disconnect the disk, keep pressed the "Copy" button for about 6 seconds, until the blue usb led begins to blink and two beeps come from nasda; then release the button and wait for the blue usb led to turn off. Then, disconnect the disk;
4. Write the date and the name of who made the backup on the "backup notes" present inside the disk box and keep the disk in a safe place;

There are two videos showing how to start the backup and how to disconnect the disk: