Alex Rivera | Logout

What is the correct way to backup ZODB blobs?

Asked 2009-01-16T20:51:01.910
9

I am using plone.app.blob to store large ZODB objects in a blobstorage directory. This reduces size pressure on Data.fs but I have not been able to find any advice on backing up this data.

I am already backing up Data.fs by pointing a network backup tool at a directory of repozo backups. Should I simply point that tool at the blobstorage directory to backup my blobs?

What if the database is being repacked or blobs are being added and deleted while the copy is taking place? Are there files in the blobstorage directory that must be copied over in a certain order?

python plone zope zodb blobstorage
Edit
Report

1 Answer

2

I have an script that copies for a month the blobs using hard links ( so you have and historial of the blobs as the Data.fs ):

backup.sh 

#!/bin/sh

# per a fer un full : ./cron_nocturn.sh full

ZEO_FOLDER=/var/plone/ZEO

# Zeo port
ZEO_PORT = 8023

# Name of the DB
ZEO_DB = zodb1

BACKUP_FOLDER=/backup/plone

LOGBACKUP=/var/plone/ZEO/backup.log

BACKUPDIR=`date +%d`

echo "INICI BACKUP" >> $LOGBACKUP
echo `date` >> $LOGBACKUP

# Fem el packing

if [ "$1" = "full" ]; then
  $ZEO_FOLDER/bin/zeopack -S $ZEO_DB -p $ZEO_PORT -h 127.0.0.1


echo "   Comprovant folders"
#mirem si existeix el folder de backup
if ! [ -x $BACKUP_FOLDER/$ZEO_DB ]; then
   mkdir $BACKUP_FOLDER/$ZEO_DB
fi

#mirem si existeix el backup folder del dia
if ! [ -x $BACKUP_FOLDER/blobs/$BACKUPDIR/ ] ; then
   mkdir $BACKUP_FOLDER/blobs/$BACKUPDIR/
fi

echo "   Backup Data.fs"
# backup de Data.fs
if  [ "$1" = "full" ]; then
   echo "   Copiant Data.fs"
   $ZEO_FOLDER/bin/repozo -B -F -r $BACKUP_FOLDER/$ZEO_DB/ -f $ZEO_FOLDER/var/filestorage/Data_$ZEO_DB.fs
   echo "   Purgant backups antics"
   $ZEO_FOLDER/neteja.py -l $BACKUP_FOLDER/$ZEO_DB -k 2
else
   $ZEO_FOLDER/bin/repozo -B -r $BACKUP_FOLDER/$ZEO_DB/ -f $ZEO_FOLDER/var/filestorage/Data_$ZEO_DB.fs
fi

echo "   Copiant blobs"
# backup blobs
rm -rf $BACKUP_FOLDER/blobs/$BACKUPDIR
cd $BACKUP_FOLDER/current-blobs && find . -print | cpio -dplm $BACKUP_FOLDER/blobs/$BACKUPDIR
rsync --force --ignore-errors --delete --update -a $ZEO_FOLDER/var/blobs/ $BACKUP_FOLDER/current-blobs/


echo "FI BACKUP" >> $LOGBACKUP
echo `date` >> $LOGBACKUP

neteja.py

#!/usr/bin/python2.4

# neteja.py -l [directori_desti] -k [numero_fulls_a_mantenir]
# Script que neteja un directori amb backups i guarda nomes els ultims fulls que li especifiquis
# Es basa en la utilitzacio de collective.recipe.backup
# Author: Victor Fernandez de Alba <sneridagh@gmail.com>

import sys, getopt
answered 2011-03-10T16:54:01.070

Your Answer