KAGRA Logbook

CAL (General)

dan.chen - 17:02 Monday 27 May 2024 (29655)

Preparation for Tcam data backup

With Ikeda-san, Oshino-san

Summary

Until now, Tcam data had only been stored in data2 of calcenter01 and had not been backed up.
So we decided to make a backup system for this data.
Today, we put two new HDDs in the calcenter01 and mounted them: Tcam_BU_001, Tcam_BU_002.
We plan to use rsync and crontab for backup later.

Details

Checked the current status of calcenter01 about the mounted HDD.
As the new HDDs were not recognized by the calcenter01, we did the followings:
1. Format the HDDs by another machine.
2. Cleaned inside of calcenter01 machine. There was a lot of dust in it.
3. Replaced the CMOS battery.
4. Then, finally, the calcenter01 recognized the new HDDs.
Mounted the new HDDs on /Tcam_BU_001 and /Tcam_BU_002

Next time, we will test rsync and make crontabs for the backup.

Comments to this report:

dan.chen - 6:59 Friday 31 May 2024 (29702)

We rsynced "/data2/" which contains all Tcam data to "/Tcam_BU_001/".

So, the first test backup was completed.

dan.chen - 12:37 Friday 31 May 2024 (29709)

I rsynced "/data2/" to "/Tcam_BU_002/20240531_110000/" too.

The idea is that rsync to Tea_BU_001 every day, and to Tcam_BU_002 every 2 weeks with several versions.

I made scripts for cron, but have not activated them.
The scripts are in "calcenter01:/home/dchen/Tcam_data_BU/"

dan.chen - 11:47 Tuesday 04 June 2024 (29745)

With advice from YamaT-san and Ikeda-san, I have set up cron jobs at calcenter01 for the Tcam backup.

We think bi-weekly backups do not help much, so we decided to back up almost every other day for the two HDDs.

Scripts and log location: /home/dchen/Tcam_data_BU/

The backup will be performed at 2:00 am everyday.
The target HDD is Tcam_BU_001 or Tcam_BU_002 depending on the day of the week.