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authorPascal Rigaux <pixel@mandriva.com>2004-08-08 07:10:15 +0000
committerPascal Rigaux <pixel@mandriva.com>2004-08-08 07:10:15 +0000
commit3c6fbfb082361277877a5dd82f7014eff0afaa92 (patch)
tree08abbcab50b6eecbf5f1f4821ccbbf5865f041df /perl-install/raid.pm
parent98a4be8ec81d7865a4655fc322b52e866e1c64a2 (diff)
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- switch to mdadm (instead of raidtools)
- create mdadm.conf instead of raidtab - internal {raids} is no more indexed by X for mdX, and so don't have holes anymore - internal {chunk-size} is now a number in KiB - internal {raid} is the raid device name, not the number - various cleanup for raid detection
Diffstat (limited to 'perl-install/raid.pm')
-rw-r--r--perl-install/raid.pm204
1 files changed, 128 insertions, 76 deletions
diff --git a/perl-install/raid.pm b/perl-install/raid.pm
index d91f3984b..a91466a6b 100644
--- a/perl-install/raid.pm
+++ b/perl-install/raid.pm
@@ -15,65 +15,60 @@ 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", fs_type => 'ext3', disks => [ @parts ], device => "md$nb", notFormatted => 1, level => 1 };
- foreach my $part (@parts) {
- $part->{raid} = $nb;
- delete $part->{mntpoint};
+ my ($raids, %opts) = @_;
+ my $md_part = { %opts };
+ add2hash_($md_part, { 'chunk-size' => '64', disks => [],
+ device => 'md' . int(@$raids),
+ notFormatted => 1, level => 1 });
+ push @$raids, $md_part;
+ foreach (@{$md_part->{disks}}) {
+ $_->{raid} = $md_part->{device};
+ fs::type::set_pt_type($_, 0xfd);
+ delete $_->{mntpoint};
}
- update($raids->[$nb]);
- $nb;
+ update($md_part);
+ $md_part;
}
sub add {
- my ($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->[$nb]);
+ my ($md_part, $part) = @_;
+ $md_part->{isMounted} and die N("Can't add a partition to _formatted_ RAID %s", $md_part->{device});
+ inactivate_and_dirty($md_part);
set_isFormatted($part, 0);
- $part->{raid} = $nb;
+ $part->{raid} = $md_part->{device};
delete $part->{mntpoint};
- push @{$raids->[$nb]{disks}}, $part;
- update($raids->[$nb]);
+ push @{$md_part->{disks}}, $part;
+ update($md_part);
}
sub delete {
- my ($raids, $nb) = @_;
- $nb = nb($nb);
- inactivate_and_dirty($raids->[$nb]);
- delete $_->{raid} foreach @{$raids->[$nb]{disks}};
- undef $raids->[$nb];
+ my ($raids, $md_part) = @_;
+ inactivate_and_dirty($md_part);
+ delete $_->{raid} foreach @{$md_part->{disks}};
+ @$raids = grep { $_ != $md_part } @$raids;
}
-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->[$newnb]{disks}};
+sub change_device {
+ my ($md_part, $prev_device) = @_;
+ if ($prev_device ne $md_part->{device}) {
+ inactivate_and_dirty({ device => $prev_device });
+ $_->{raid} = $md_part->{device} foreach @{$md_part->{disks}};
}
- $newnb;
}
sub removeDisk {
my ($raids, $part) = @_;
- my $nb = nb($part->{raid});
- inactivate_and_dirty($raids->[$nb]);
+ my $md_part = fs::get::device2part($part->{raid}, $raids);
+ inactivate_and_dirty($md_part);
+ fs::type::set_isFormatted($part, 0);
delete $part->{raid};
- my $disks = $raids->[$nb]{disks};
+ my $disks = $md_part->{disks};
@$disks = grep { $_ != $part } @$disks;
if (@$disks) {
- update($raids->[$nb]);
+ update($md_part);
} else {
- undef $raids->[$nb];
+ @$raids = grep { $_ != $md_part } @$raids;
}
}
@@ -103,27 +98,6 @@ sub update {
updateSize($_) foreach @_;
}
-sub write {
- my ($raids, $file) = @_;
- return if $::testing;
-
- output($file,
- map {
- my $s = sprintf(<<EOF, devices::make($_->{device}), $_->{level}, $_->{'chunk-size'}, int @{$_->{disks}});
-raiddev %s
-raid-level %s
-chunk-size %s
-persistent-superblock 1
-nr-raid-disks %d
-EOF
- my @devs = map_index {
- " device " . devices::make($_->{device}) . "\n raid-disk $::i\n";
- } @{$_->{disks}};
-
- $s, @devs
- } grep { $_ } @$raids);
-}
-
sub make {
my ($raids, $part) = @_;
@@ -132,11 +106,15 @@ sub make {
inactivate_and_dirty($part);
isRAID($_) and make($raids, $_) foreach @{$part->{disks}};
- my $dev = devices::make($part->{device});
eval { modules::load(module($part)) };
- &write($raids, "/etc/raidtab");
- run_program::run("mkraid", "--really-force", $dev) or die
- $::isStandalone ? N("mkraid failed (maybe raidtools are missing?)") : N("mkraid failed");
+
+ whereis_binary('mdadm') or die 'mdadm not installed';
+
+ run_program::run_or_die('mdadm', '--create', '--run', devices::make($part->{device}),
+ '--chunk=' . $part->{'chunk-size'},
+ "--level=$part->{level}",
+ '--raid-devices=' . int(@{$part->{disks}}),
+ map { devices::make($_->{device}) } @{$part->{disks}});
}
sub format_part {
@@ -150,27 +128,18 @@ sub format_part {
sub verify {
my ($raids) = @_;
- $raids or return;
- foreach (grep { $_ } @$raids) {
+ foreach (@$raids) {
@{$_->{disks}} >= ($_->{level} =~ /4|5/ ? 3 : 2) or die N("Not enough partitions for RAID level %d\n", $_->{level});
}
}
sub prepare_prefixed {
- my ($raids, $prefix) = @_;
- $raids or return;
-
- &write($raids, "/etc/raidtab") if ! -e "/etc/raidtab";
-
- eval { cp_af("/etc/raidtab", "$prefix/etc/raidtab") };
- foreach (grep { $_ } @$raids) {
- devices::make("$prefix/dev/$_->{device}") foreach @{$_->{disks}};
- }
+ my ($_raids) = @_;
}
sub inactivate_and_dirty {
my ($part) = @_;
- run_program::run("raidstop", devices::make($part->{device}));
+ run_program::run('mdadm', '--stop', devices::make($part->{device}));
set_isFormatted($part, 0);
}
@@ -178,11 +147,94 @@ sub active_mds() {
map { if_(/^(md\d+) /, $1) } cat_("/proc/mdstat");
}
+sub detect_during_install {
+ my (@parts) = @_;
+ detect_during_install_once(@parts);
+ detect_during_install_once(@parts) if active_mds(); #- try again to detect RAID 10
+}
+
+sub detect_during_install_once {
+ my (@parts) = @_;
+ devices::make("md$_") foreach 0 .. max_nb();
+ output('/etc/mdadm.conf', join(' ', 'DEVICE',
+ (map { "/dev/$_" } active_mds()),
+ map { devices::make($_->{device}) } @parts), "\n");
+ run_program::run('mdadm', '>>', '/etc/mdadm.conf', '--examine', '--scan');
+
+ foreach (@{parse_mdadm_conf(scalar cat_('/etc/mdadm.conf'))->{ARRAY}}) {
+ eval { modules::load($_->{level}) };
+ }
+ run_program::run('mdadm', '--assemble', '--scan');
+}
+
+sub get_existing {
+ my @parts = @_;
+ my $raids = [];
+ foreach my $md (active_mds()) {
+ my $conf = parse_mdadm_conf(scalar run_program::get_stdout('mdadm', '--detail', '--brief', devices::make($md)));
+
+ @{$conf->{ARRAY}} == 1 or internal_error("too many answers");
+ my $raw_part = $conf->{ARRAY}[0];
+
+ $raw_part->{level} =~ s/raid//; #- { linear | raid0 | raid1 | raid5 } -> { linear | 0 | 1 | 5 }
+
+ my @mdparts =
+ map {
+ if (my $part = fs::get::device2part($_, [ @parts, @$raids ])) {
+ $part;
+ } else {
+ log::l("ERROR: unknown raw raid device $_");
+ ();
+ }
+ } split(',', $raw_part->{devices});
+
+ my $md_part = new($raids, device => $md, level => $raw_part->{level}, disks => \@mdparts);
+
+ my $fs_type = fs::type::fs_type_from_magic($md_part);
+ fs::type::set_fs_type($md_part, $fs_type || 'ext3');
+ fs::type::set_isFormatted($md_part, to_bool($fs_type));
+
+ log::l("RAID: found $md (raid $md_part->{level}) type $fs_type with parts $raw_part->{devices}");
+ }
+ $raids;
+}
+
sub is_active {
my ($dev) = @_;
member($dev, active_mds());
}
-sub inactivate_all() { run_program::run("raidstop", devices::make($_)) foreach active_mds() }
+sub inactivate_all() {
+ run_program::run('mdadm', '--stop', devices::make($_)) foreach active_mds();
+}
+
+sub prepare_prefixed {
+ my ($raids) = @_;
+ my %raids = map {
+ devices::make($_->{device}) =>
+ [ map { devices::make($_->{device}) } @{$_->{disks}} ]
+ } @$raids;
+
+ output("$::prefix/etc/mdadm.conf",
+ join(' ', 'DEVICE', uniq(map { @$_ } values %raids)) . "\n",
+ map_each { "ARRAY $::a devices=" . join(',', @$::b) . "\n" } %raids);
+}
+
+sub parse_mdadm_conf {
+ my ($s) = @_;
+ my %conf = (DEVICE => [], ARRAY => []);
+ $s =~ s!^\s*#.*!!gm; #- remove comments
+ $s =~ s!\n(\s)!$1!g; #- join lines starting with a space
+ foreach (split("\n", $s)) {
+ if (/^DEVICE\s+(.*)/) {
+ push @{$conf{DEVICE}}, split(' ', $1);
+ } elsif (my ($md, $md_conf) = /^ARRAY\s+(\S+)\s*(.*)/) {
+ my %md_conf = map { if_(/(.*)=(.*)/, $1 => $2) } split(' ', $md_conf);
+ $md_conf{device} = $md;
+ push @{$conf{ARRAY}}, \%md_conf;
+ }
+ }
+ \%conf
+}
1;