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ceph: osd_belongs_to_node: only check tree-entries of type host, refactor

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We want to check explicitly for type host, so filter for that first
and create a hash map for easier usage afterwards.

Drop the error when there's no tree, as either RADOS error'd on bad
command already, or there really is no tree (but RADOS worked OK), in
which case we simply return that the OSD did not belong to this node.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2021-04-20 18:05:56 +02:00
parent e12c5dbf22
commit d7a63207a3
2 changed files with 26 additions and 15 deletions
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15
PVE/API2/Ceph/OSD.pm
View File

@ -482,15 +482,18 @@ __PACKAGE__->register_method ({
# $tree ... rados osd tree (passing the tree makes it easy to test)
sub osd_belongs_to_node {
my ($tree, $nodename, $osdid) = @_;
return 0 if !($tree && $tree->{nodes});
die "No tree nodes found\n" if !($tree && $tree->{nodes});
my $allNodes = $tree->{nodes};
my $node_map = {};
for my $el (grep { defined($_->{type}) && $_->{type} eq 'host' } @{$tree->{nodes}}) {
my $name = $el->{name};
die "internal error: duplicate host name found '$name'\n" if $node_map->{$name};
$node_map->{$name} = $el;
}
my @match = grep($_->{name} eq $nodename, @$allNodes);
my $node = shift @match; # contains rados information about $nodename
die "There must not be more than one such node in the list" if @match;
my $osds = $node_map->{$nodename}->{children};
return 0 if !$osds;
my $osds = $node->{children};
return grep($_ == $osdid, @$osds);
}

24
test/OSD_test.pl
View File

@ -11,20 +11,26 @@ use PVE::API2::Ceph::OSD;
use Data::Dumper;
# NOTE: not exhausive, reduced to actually required fields!
my $tree = {
nodes => [
{
id => -3,
name => 'pveA',
children => [ 0,1,2,3 ],
}, {
type => 'host',
},
{
id => -5,
name => 'pveB',
children => [ 4,5,6,7 ],
}, {
type => 'host',
},
{
id => -7,
name => 'pveC',
children => [ 8,9,10,11 ],
type => 'host',
},
],
};
@ -53,20 +59,22 @@ my $double_nodes_tree = {
nodes => [
{
name => 'pveA',
type => 'host',
},
{
name => 'pveA',
type => 'host',
}
]
};
eval { PVE::API2::Ceph::OSD::osd_belongs_to_node($double_nodes_tree, 'pveA') };
like($@, qr/not be more than one/, "Die if node occurs too often");
like($@, qr/duplicate host name found/, "Die if node occurs too often");
my $tree_without_nodes = {
dummy => 'dummy',
};
eval { PVE::API2::Ceph::OSD::osd_belongs_to_node(undef) };
like($@, qr/No tree nodes/, "Die if tree has no nodes");
is (
PVE::API2::Ceph::OSD::osd_belongs_to_node(undef),
0,
"Early-return false if there's no/empty node tree",
);
done_testing(@belong_to_B + @not_belong_to_B + 2);