recepies/zfs/zfs-expire-snapshot.pl

#!/usr/bin/perl

use warnings;
use strict;

use DateTime;
use Data::Dump qw/dump/;

my $debug = 0;

my $config = {
        'default' => {
                21 => 5,
                30 => 10,
                60 => 30,
        },
        '212052' => {   # koha-dev
                7 => 10,
                14 => 30,
        },
        '212056' => {   # webpac2
                7 => 5,
        }
};

my $now = DateTime->now();

my $last_backup;

open(my $fs, '-|', 'zfs list -H');
while(<$fs>) {
        chomp;
        my ( $name, $used, $avail, $refer, $mountpoint ) = split(/\t/,$_,6);

        next unless $name =~ m{(.+)@(\d\d\d\d)-(\d\d)-(\d\d)};

        my $host = $1;

        my $date = DateTime->new( year => $2, month => $3, day => $4 );

        my $age = $now->delta_days( $date )->delta_days;

        my $op = ' ';
        my $last = 0;

        my $c = (grep { $host =~ m{\Q$_\E} } keys %$config)[0];
        $c = 'default' unless defined $c;

        warn "# config: $c\n" if $debug;

        my $h = $host;
        $h =~ s{,+/([^/]+)$}{}; # just hostname without path

        $c = $config->{$c} || die "can't find config for $c";

        warn "# c = ",dump($c) if $debug;

        my $keep_every_days;
        my $older_than_days;
        foreach ( sort keys %$c ) {
                $older_than_days = $_;
                $keep_every_days = $c->{$_};
                warn "## $host $age > $older_than_days" if $debug;
                last if $age > $older_than_days;
        }

        my $config_applied = '';

        if ( $age > $older_than_days ) {

                $config_applied = "> $older_than_days keep $keep_every_days";

                $last_backup->{$host} ||= $date;
                $last = $last_backup->{$host}->delta_days( $date )->delta_days;

                if ( $last && $last < $keep_every_days ) {
                        $op = 'D';
                } else {
                        $op = ' ';
                        $last_backup->{$host} = $date;
                }
        } else {
                $config_applied = 'none';
        }

        print "$op $name\t$used\t$refer\t$age\t$last\t$config_applied\n";

        system "zfs destroy $name" if $op eq 'D' && @ARGV;
}
1	#!/usr/bin/perl
2
3	use warnings;
4	use strict;
5
6	use DateTime;
7	use Data::Dump qw/dump/;
8
9	my $debug = 0;
10
11	my $config = {
12	'default' => {
13	21 => 5,
14	30 => 10,
15	60 => 30,
16	},
17	'212052' => { # koha-dev
18	7 => 10,
19	14 => 30,
20	},
21	'212056' => { # webpac2
22	7 => 5,
23	}
24	};
25
26	my $now = DateTime->now();
27
28	my $last_backup;
29
30	open(my $fs, '-\|', 'zfs list -H');
31	while(<$fs>) {
32	chomp;
33	my ( $name, $used, $avail, $refer, $mountpoint ) = split(/\t/,$_,6);
34
35	next unless $name =~ m{(.+)@(\d\d\d\d)-(\d\d)-(\d\d)};
36
37	my $host = $1;
38
39	my $date = DateTime->new( year => $2, month => $3, day => $4 );
40
41	my $age = $now->delta_days( $date )->delta_days;
42
43	my $op = ' ';
44	my $last = 0;
45
46	my $c = (grep { $host =~ m{\Q$_\E} } keys %$config)[0];
47	$c = 'default' unless defined $c;
48
49	warn "# config: $c\n" if $debug;
50
51	my $h = $host;
52	$h =~ s{,+/([^/]+)$}{}; # just hostname without path
53
54	$c = $config->{$c} \|\| die "can't find config for $c";
55
56	warn "# c = ",dump($c) if $debug;
57
58	my $keep_every_days;
59	my $older_than_days;
60	foreach ( sort keys %$c ) {
61	$older_than_days = $_;
62	$keep_every_days = $c->{$_};
63	warn "## $host $age > $older_than_days" if $debug;
64	last if $age > $older_than_days;
65	}
66
67	my $config_applied = '';
68
69	if ( $age > $older_than_days ) {
70
71	$config_applied = "> $older_than_days keep $keep_every_days";
72
73	$last_backup->{$host} \|\|= $date;
74	$last = $last_backup->{$host}->delta_days( $date )->delta_days;
75
76	if ( $last && $last < $keep_every_days ) {
77	$op = 'D';
78	} else {
79	$op = ' ';
80	$last_backup->{$host} = $date;
81	}
82	} else {
83	$config_applied = 'none';
84	}
85
86	print "$op $name\t$used\t$refer\t$age\t$last\t$config_applied\n";
87
88	system "zfs destroy $name" if $op eq 'D' && @ARGV;
89	}