perl-install/raid.pm


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package raid; # $Id$

use diagnostics;
use strict;

#-######################################################################################
#- misc imports
#-######################################################################################
use common;
use partition_table qw(:types);
use run_program;
use devices;
use modules;
use fs;

sub max_nb() { 31 }

sub nb { 
    my ($nb) = @_;
    first((ref($nb) ? $nb->{device} : $nb) =~ /(\d+)/);
}

sub new {
    my ($raids, @parts) = @_;
    my $nb = @$raids; 
    $raids->[$nb] = { 'chunk-size' => "64k", pt_type => 0x483, disks => [ @parts ], device => "md$nb", notFormatted => 1, level => 1 };
    foreach my $part (@parts) {
	$part->{raid} = $nb;
	delete $part->{mntpoint};
    }
    update($raids->[$nb]);
    $nb;
}

sub add {
    my ($raids, $part, $nb) = @_; $nb = nb($nb);
    $raids->[$nb]{isMounted} and die N("Can't add a partition to _formatted_ RAID md%d", $nb);
    inactivate_and_dirty($raids->[$nb]);
    $part->{notFormatted} = 1; $part->{isFormatted} = 0;
    $part->{raid} = $nb;
    delete $part->{mntpoint};
    push @{$raids->[$nb]{disks}}, $part;
    update($raids->[$nb]);
}

sub delete {
    my ($raids, $nb) = @_;
    $nb = nb($nb);
    inactivate_and_dirty($raids->[$nb]);
    delete $_->{raid} foreach @{$raids->[$nb]{disks}};
    undef $raids->[$nb];
}

sub changeNb {
    my ($raids, $oldnb, $newnb) = @_;
    if ($oldnb != $newnb) {
	inactivate_and_dirty($raids->[$_]) foreach $oldnb, $newnb;

	($raids->[$newnb], $raids->[$oldnb]) = ($raids->[$oldnb], undef);
	$raids->[$newnb]{device} = "md$newnb";
	$_->{raid} = $newnb foreach @{$raids->[$newnb]{disks}};
    }
    $newnb;
}

sub removeDisk {
    my ($raids, $part) = @_;
    my $nb = nb($part->{raid});
    inactivate_and_dirty($raids->[$nb]);
    delete $part->{raid};
    my $disks = $raids->[$nb]{disks};
    @$disks = grep { $_ != $part } @$disks;
    if (@$disks) {
	update($raids->[$nb]);
    } else {
	undef $raids->[$nb];
    }
}

sub updateSize {
    my ($part) = @_;
    local $_ = $part->{level};
    my @l = map { $_->{size} } @{$part->{disks}};

    $part->{size} = do {
	if (/0|linear/) { sum @l        }