Date: Sat, 8 Aug 2009 09:32:27 -0800 From: Mel Flynn <mel.flynn+fbsd.questions@mailing.thruhere.net> To: freebsd-questions@freebsd.org Cc: Volodymyr Kostyrko <c.kworr@gmail.com>, "b. f." <bf1783@googlemail.com> Subject: Re: Recovering loss of /var/db/pkg ? Message-ID: <200908080932.27489.mel.flynn%2Bfbsd.questions@mailing.thruhere.net> In-Reply-To: <d873d5be0908080402n47e8ab48o4ec5c1c096005f0c@mail.gmail.com> References: <d873d5be0908080402n47e8ab48o4ec5c1c096005f0c@mail.gmail.com>
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On Saturday 08 August 2009 03:02:05 b. f. wrote:
> 2) write a script to get the names of all files that belonged to ports
> and swing through a ports tree, associating the files with ports via
> the pkg-plist and PLIST_FILES variables; or
This is quite complex, time consuming and prone to error the more ports tree
and installed ports are out of sync. Either way, you will want to compare
files against the generate-plist target (and the resulting contents of
$TMPPLIST), as more and more ports use dynamic package list features.
To prevent this from happening in the future, I've written a small periodic
script that you can put in /usr/local/etc/periodic/daily and backs up the list
of origins of installed ports.
On the first run (or more to the point, if /var/backup/pkglist.prev doesn't
exist), it will dump the current list. Otherwise, it will compare with the
previous run and provide a diff if anything changed. So:
- if you set $daily_backup_pkglist_enable to YES in /etc/periodic.conf
- if you have daily reports mailed to an off-machine address
- and if you keep the first run and all diffs
You can recreate an accurate list of installed ports, when applying all diffs
in sequence, even if you newfs'd /var on the machine.
--
Mel
#!/bin/sh
#
# $Coar: periodic/daily/203.backup-pkglist.sh,v 1.3 2009/08/08 17:04:41 mel
Exp $
#
# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/periodic.conf ]
then
. /etc/defaults/periodic.conf
source_periodic_confs
fi
daily_backup_pkglist_enable=${daily_backup_pkglist_enable:-"NO"}
daily_backup_pkglist_dbdir=${daily_backup_pkglist_dbdir:-"/var/db/pkg"}
create_pkglist()
{
local f
f=$1
for CFILE in ${daily_backup_pkglist_dbdir}/*/+CONTENTS; do
sed -ne 's,^@comment ORIGIN:,,p' ${CFILE}
done | sort > ${f}
}
case "$daily_backup_pkglist_enable" in
[Yy][Ee][Ss])
if [ ! -d ${daily_backup_pkglist_dbdir} ]
then
echo '$daily_backup_pkglist_enable is enabled but' \
"${daily_backup_pkglist_dbdir} doesn't exist"
rc=2
else
bak=/var/backups
rc=0
echo ""
echo "Backing up list of package origins:"
create_pkglist $bak/pkglist.cur
if [ ! -f $bak/pkglist.prev ]
then
echo "no $bak/pkglist.prev. Dumping full list for prosperity:"
cat $bak/pkglist.cur
cp -p $bak/pkglist.cur $bak/pkglist.prev
fi
if ! cmp -s $bak/pkglist.prev $bak/pkglist.cur
then
[ $rc -lt 1 ] && rc=1
echo "$host pkglist diffs:"
diff -u $bak/pkglist.prev $bak/pkglist.cur
mv $bak/pkglist.cur $bak/pkglist.prev
fi
fi;;
*) rc=0;;
esac
exit $rc
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