Package: squidguard Severity: normal Hi Joachim,
please Cc: me or use <bugnumber>-submit...@bugs.debian.org, since I didn't receive your email. > > removal of libdb4.7-dev has been scheduled on 2011-06-14 (exactly > > after month after perl transition). > > > If you need help with transition or do you want me to take care of it, > > please don't hesitate to contact me, I'll be happy to help. > > I have a question about transition: The old databases used by squidguard > must be migrated to the new libdb > version 4.8 Don't use db4.8. libdb4.8 is also obsolete. > (I think that libdb 5.1 does not run with squidguard 1.4). There really no reason why it shouldn't work, unless there are some checks for DB_VERSION_MAJOR == 4 as I stated in the original report. The db5.1 is really db4.11, but the upstream probably didn't wanted to use two digits fro DB_VERSION_MINOR. > How should I initiate this migration in the updated squidguard > package? Well, that depends whether the squidguard uses Berkeley DB environment: http://download.oracle.com/docs/cd/E17076_02/html/upgrading/upgrade_process.html And quickly scanning the source code it does. You have two options: 1. if the databases contains only temporary data, you can just remove them and let the squidguard create them from scratch 2. run the upgrade script in the postinst, it's not that hard. You can find the simple version of the upgrade procedure f.e. in the sks where I wrote it. You have to add these lines to debian/rules to note compiled-in version: BDB_VERSION ?= $(shell LC_ALL=C dpkg-query -l 'libdb[45].[0-9]-dev' | grep ^ii | sed -e 's|.*\s\libdb\([45]\.[0-9]\)-dev\s.*|\1|') <the_install_target>: echo $(BDB_VERSION) > debian/<package>/usr/lib/<package>/berkeley_db.txt and then the postinst (you have to adjust paths and users, etc.): # Read the active Berkeley DB version, fall back to 4.7 if not found if [ -r /var/lib/<package>/berkeley_db.active ]; then OLD_BDB=$(cat /usr/lib/<package>/berkeley_db.active) else if dpkg --compare-versions "$2" lt "1.1.1+dpkgv3-1"; then OLD_BDB=4.6 elif dpkg --compare-versions "$2" lt "1.1.1+dpkgv3-6.1"; then OLD_BDB=4.7 else OLD_BDB=4.7 fi fi # Read the compiled-in Berkeley DB version NEW_BDB=$(cat /usr/lib/<package>/berkeley_db.txt) if [ "$OLD_BDB" != "$NEW_BDB" ]; then # Upgrade Berkeley DB in place BACKUP_DIR=/var/backup/<package>/$(date +%Y%m%d-%H%M%S) mkdir -p $BACKUP_DIR chown <username>:<username> ${BACKUP_DIR} for DBHOME in <database directories>; do # Don't run if the database directory doesn't exist [ ! -d ${DBHOME} ] && continue # Create backup directory mkdir -p ${BACKUP_DIR}/${DBHOME} chown <username>:<username> ${BACKUP_DIR}/${DBHOME} # Make sure we own the files chown <username>:<username> -R ${DBHOME} if [ -x /usr/bin/db${OLD_BDB}_recover ]; then # Run recover with old tools su <username> -c "db${OLD_BDB}_recover -h ${DBHOME}" # Backup needed log files LOG_FILES=$(su <username> -c "db${OLD_BDB}_archive -h ${DBHOME} -l") else # If we don't have the Berkeley DB tools then backup all log files LOG_FILES=$(cd ${DBHOME}; ls -1 | grep -E "^log\.") fi # Backup log files for log_file in ${LOG_FILES}; do cp -a ${DBHOME}/$log_file ${BACKUP_DIR}/${DBHOME}/ done # Backup & upgrade database files for db in $(cd ${DBHOME}; ls -1 | grep -Ev "^(__|log\.)"); do # Backup database file su <username> -c "cp ${DBHOME}/${db} ${BACKUP_DIR}/${DBHOME}/" # Upgrade database file su <username> -c "db${NEW_BDB}_upgrade -h ${DBHOME} ${DBHOME}/$db"; done # Set checkpoint and delete old logfiles su <username> -c "db${NEW_BDB}_checkpoint -h ${DBHOME} -1" su <username> -c "db${NEW_BDB}_archive -h ${DBHOME} -d" done # Note the active Berkeley DB version cp -f /usr/lib/<package>/berkeley_db.txt /usr/lib/<package>/berkeley_db.active fi Also don't forget to remove the berkeley_db.active file in the postrm purge target: Something like this: <package>.postrm: if [ "$1" = "purge" ]; then rm -f /usr/lib/<package>/berkeley_db.active rmdir /usr/lib/<package> || true fi -- System Information: Debian Release: 6.0.1 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
