436 lines
14 KiB
Perl
436 lines
14 KiB
Perl
package PVE::Storage::LunCmd::FreeNAS;
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use strict;
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use warnings;
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use Data::Dumper;
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use PVE::SafeSyslog;
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use REST::Client;
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use MIME::Base64;
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use JSON;
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my $MAX_LUNS = 255;
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sub get_base { return '/dev/zvol'; }
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sub run_lun_command {
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my ($scfg, $timeout, $method, @params) = @_;
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# TODO : Move configuration of the storage
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if( ! defined( $scfg->{'freenas_user'} ) ) {
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$scfg->{'freenas_user'} = 'root';
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$scfg->{'freenas_password'} = '*** password ***';
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}
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syslog("info","FreeNAS::lun_command : $method(@params)");
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if( $method eq "create_lu" ) { return run_create_lu($scfg,$timeout,$method,@params); }
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if( $method eq "delete_lu" ) { return run_delete_lu($scfg,$timeout,$method,@params); }
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if( $method eq "import_lu" ) { return run_create_lu($scfg,$timeout,$method,@params); }
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if( $method eq "modify_lu" ) { return run_modify_lu($scfg,$timeout,$method,@params); }
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if( $method eq "add_view" ) { return run_add_view($scfg,$timeout,$method,@params); }
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if( $method eq "list_view" ) { return run_list_view($scfg,$timeout,$method, @params); }
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if( $method eq "list_lu" ) { return run_list_lu($scfg,$timeout,$method,"name", @params); }
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syslog("error","FreeNAS::lun_command : unknown method $method");
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return undef;
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}
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sub run_add_view { return ''; }
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# a modify_lu occur by example on a zvol resize. we just need to destroy and recreate the lun with the same zvol.
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# Be careful, the first param is the new size of the zvol, we must shift params
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sub run_modify_lu {
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my ($scfg, $timeout, $method, @params) = @_;
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shift(@params);
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run_delete_lu($scfg,$timeout,$method,@params);
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return run_create_lu($scfg,$timeout,$method,@params);
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}
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sub run_list_view {
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my ($scfg, $timeout, $method, @params) = @_;
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return run_list_lu($scfg,$timeout,$method,"lun-id", @params);
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}
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sub run_list_lu {
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my ($scfg, $timeout, $method, $result_value_type ,@params) = @_;
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my $object = $params[0];
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my $result = undef;
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my $luns = freenas_list_lu($scfg);
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foreach my $lun ( @$luns ) {
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if ($lun->{'iscsi_target_extent_path'} =~ /^$object$/) {
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$result = $result_value_type eq "lun-id" ? $lun->{'iscsi_lunid'} : $lun->{'iscsi_target_extent_path'};
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syslog("info","FreeNAS::list_lu($object):$result_value_type : lun found $result");
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last;
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}
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}
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if( !defined($result) ) {
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syslog("info","FreeNAS::list_lu($object):$result_value_type : lun not found");
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}
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return $result;
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}
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sub run_create_lu {
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my ($scfg, $timeout, $method, @params) = @_;
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my $lun_path = $params[0];
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my $lun_id = freenas_get_first_available_lunid($scfg);
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die "Maximum number of LUNs per target is $MAX_LUNS" if scalar $lun_id >= $MAX_LUNS;
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die "$params[0]: LUN $lun_path exists" if defined(run_list_lu($scfg,$timeout,$method,"name", @params));
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my $target_id = freenas_get_targetid($scfg);
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die "Unable to find the target id for $scfg->{target}" if !defined($target_id);
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my $bs=$scfg->{blocksize};
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if (index($bs, "k") >= 0 ) {
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chop($bs); $bs = $bs * 1024;
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syslog("info","FreeNAS::create_lu(lun_path=$lun_path, lun_id=$lun_id) : blocksize convert $scfg->{blocksize} = $bs");
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} else {
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syslog("info","FreeNAS::create_lu(lun_path=$lun_path, lun_id=$lun_id) : blocksize $bs");
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}
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# Create the extent
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my $extent = freenas_iscsi_create_extent($scfg, $lun_path, $bs);
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# Associate the new extent to the target
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my $link = freenas_iscsi_create_target_to_extent($scfg , $target_id , $extent->{'id'} , $lun_id );
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if (defined($link) ) {
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syslog("info","FreeNAS::create_lu(lun_path=$lun_path, lun_id=$lun_id) : sucessfull");
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} else {
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die "Unable to create lun $lun_path";
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}
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return "";
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}
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sub run_delete_lu {
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my ($scfg, $timeout, $method, @params) = @_;
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my $lun_path = $params[0];
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my $luns = freenas_list_lu($scfg);
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my $lun = undef;
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my $link = undef;
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foreach my $item ( @$luns ) {
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if( $item->{'iscsi_target_extent_path'} =~ /^$lun_path$/ ) {
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$lun = $item;
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last;
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}
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}
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die "Unable to find the lun $lun_path for $scfg->{target}" if !defined($lun);
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my $target_id = freenas_get_targetid($scfg);
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die "Unable to find the target id for $scfg->{target}" if !defined($target_id);
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# find the target to extent
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my $target2extents = freenas_iscsi_get_target_to_extent($scfg);
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foreach my $item ( @$target2extents ) {
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if( $item->{'iscsi_target'} == $target_id &&
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$item->{'iscsi_lunid'} == $lun->{'iscsi_lunid'} &&
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$item->{'iscsi_extent'} == $lun->{'id'} ) {
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$link = $item;
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last;
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}
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}
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die "Unable to find the link for the lun $lun_path for $scfg->{target}" if !defined($link);
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# Remove the link
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my $remove_link = freenas_iscsi_remove_target_to_extent($scfg,$link->{'id'});
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# Remove the extent
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my $remove_extent = freenas_iscsi_remove_extent($scfg,$lun->{'id'});
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if( $remove_link == 1 && $remove_extent == 1 ) {
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syslog("info","FreeNAS::delete_lu(lun_path=$lun_path) : sucessfull");
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} else {
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die "Unable to delete lun $lun_path";
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}
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return "";
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}
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### FREENAS API CALLING ###
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sub freenas_api_call {
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my ($scfg, $method, $path, $data) = @_;
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my $client = undef;
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$client = REST::Client->new();
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$client->setHost('http://'. $scfg->{portal} );
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$client->addHeader('Content-Type' , 'application/json' );
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$client->addHeader('Authorization' , 'Basic ' . encode_base64( $scfg->{freenas_user} . ':' . $scfg->{freenas_password} ) );
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if ($method eq 'GET') { $client->GET($path); }
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if ($method eq 'DELETE') { $client->DELETE($path); }
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if ($method eq 'POST') { $client->POST($path, encode_json($data) ); }
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return $client
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}
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sub freenas_api_log_error {
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my ($client, $method) = @_;
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syslog("info","[ERROR]FreeNAS::API::" . $method . " : Response code: ".$client->responseCode());
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syslog("info","[ERROR]FreeNAS::API::" . $method . " : Response content: ".$client->responseContent());
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return 1;
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}
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sub freenas_iscsi_get_globalconfiguration {
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my ($scfg) = @_;
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my $client = freenas_api_call($scfg,'GET',"/api/v1.0/services/iscsi/globalconfiguration/",undef);
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my $code = $client->responseCode();
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if ($code == 200) {
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my $result = decode_json($client->responseContent());
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syslog("info","FreeNAS::API::get_globalconfig : target_basename=". $result->{'iscsi_basename'});
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return $result;
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} else {
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freenas_api_log_error($client, "get_globalconfig");
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return undef;
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}
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}
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# Returns a list of all extents.
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# http://api.freenas.org/resources/iscsi/index.html#get--api-v1.0-services-iscsi-extent-
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sub freenas_iscsi_get_extent {
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my ($scfg) = @_;
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my $client = freenas_api_call($scfg,'GET',"/api/v1.0/services/iscsi/extent/?limit=0",undef);
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my $code = $client->responseCode();
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if ($code == 200) {
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my $result = decode_json($client->responseContent());
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syslog("info","FreeNAS::API::get_extent : sucessfull");
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return $result;
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} else {
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freenas_api_log_error($client, "get_extent");
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return undef;
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}
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}
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# Create an extent on FreeNas
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# http://api.freenas.org/resources/iscsi/index.html#create-resource
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# Parameters:
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# - target config (scfg)
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# - lun_path
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# - lun_bs
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sub freenas_iscsi_create_extent {
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my ($scfg, $lun_path, $lun_bs) = @_;
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my $name = $lun_path;
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$name =~ s/^.*\///; # all from last /
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$name = $scfg->{'pool'} . '/' . $name;
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my $device = $lun_path;
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$device =~ s/^\/dev\///; # strip /dev/
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my $request = {
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"iscsi_target_extent_type" => "Disk",
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"iscsi_target_extent_name" => $name,
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"iscsi_target_extent_blocksize" => $lun_bs,
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"iscsi_target_extent_disk" => $device,
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};
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my $client = freenas_api_call($scfg, 'POST', "/api/v1.0/services/iscsi/extent/", $request);
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my $code = $client->responseCode();
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if ($code == 201) {
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my $result = decode_json($client->responseContent());
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syslog("info","FreeNAS::API::create_extent(lun_path=". $result->{'iscsi_target_extent_path'} . ", lun_bs=$lun_bs) : sucessfull");
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return $result;
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} else {
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freenas_api_log_error($client, "create_extent");
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return undef;
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}
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}
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# Remove an extent by it's id
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# http://api.freenas.org/resources/iscsi/index.html#delete-resource
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# Parameters:
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# - scfg
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# - extent_id
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sub freenas_iscsi_remove_extent {
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my ($scfg,$extent_id) = @_;
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my $client = freenas_api_call($scfg, 'DELETE', "/api/v1.0/services/iscsi/extent/$extent_id/", undef);
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my $code = $client->responseCode();
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if ($code == 204) {
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syslog("info","FreeNAS::API::remove_extent(extent_id=$extent_id) : sucessfull");
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return 1;
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} else {
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freenas_api_log_error($client, "remove_extent");
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return 0;
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}
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}
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# Returns a list of all targets
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# http://api.freenas.org/resources/iscsi/index.html#get--api-v1.0-services-iscsi-target-
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sub freenas_iscsi_get_target {
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my ($scfg) = @_;
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my $client = freenas_api_call($scfg,'GET',"/api/v1.0/services/iscsi/target/?limit=0",undef);
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my $code = $client->responseCode();
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if ($code == 200) {
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my $result = decode_json($client->responseContent());
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syslog("info","FreeNAS::API::get_target() : sucessfull");
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return $result;
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} else {
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freenas_api_log_error($client, "get_target");
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return undef;
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}
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}
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# Returns a list of associated extents to targets
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# http://api.freenas.org/resources/iscsi/index.html#get--api-v1.0-services-iscsi-targettoextent-
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sub freenas_iscsi_get_target_to_extent {
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my ($scfg) = @_;
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my $client = freenas_api_call($scfg,'GET',"/api/v1.0/services/iscsi/targettoextent/?limit=0",undef);
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my $code = $client->responseCode();
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if ($code == 200) {
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my $result = decode_json($client->responseContent());
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syslog("info","FreeNAS::API::get_target_to_extent() : sucessfull");
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return $result;
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} else {
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freenas_api_log_error($client, "get_target_to_extent");
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return undef;
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}
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}
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# Associate a FreeNas extent to a FreeNas Target
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# http://api.freenas.org/resources/iscsi/index.html#post--api-v1.0-services-iscsi-targettoextent-
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# Parameters:
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# - target config (scfg)
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# - FreeNas Target ID
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# - FreeNas Extent ID
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# - Lun ID
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sub freenas_iscsi_create_target_to_extent {
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my ($scfg,$target_id,$extent_id,$lun_id) = @_;
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my $request = {
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"iscsi_target" => $target_id,
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"iscsi_extent" => $extent_id,
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"iscsi_lunid" => $lun_id
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};
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my $client = freenas_api_call($scfg, 'POST', "/api/v1.0/services/iscsi/targettoextent/", $request);
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my $code = $client->responseCode();
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if ($code == 201) {
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my $result = decode_json($client->responseContent());
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syslog("info","FreeNAS::API::create_target_to_extent(target_id=$target_id, extent_id=$extent_id, lun_id=$lun_id) : sucessfull");
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return $result;
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} else {
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freenas_api_log_error($client, "create_target_to_extent");
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return undef;
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}
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}
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# Remove a Target to extent by it's id
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# http://api.freenas.org/resources/iscsi/index.html#delete--api-v1.0-services-iscsi-targettoextent-(int-id)-
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# Parameters:
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# - scfg
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# - link_id
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sub freenas_iscsi_remove_target_to_extent {
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my ($scfg,$link_id) = @_;
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my $client = freenas_api_call($scfg, 'DELETE', "/api/v1.0/services/iscsi/targettoextent/$link_id/", undef);
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my $code = $client->responseCode();
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if ($code == 204) {
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syslog("info","FreeNAS::API::remove_target_to_extent(link_id=$link_id) : sucessfull");
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return 1;
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} else {
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freenas_api_log_error($client, "remove_target_to_extent");
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return 0;
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}
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}
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# Returns all luns associated to the current target defined by $scfg->{target}
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# This method returns an array reference like "freenas_iscsi_get_extent" do
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# but with an additionnal hash entry "iscsi_lunid" retrieved from "freenas_iscsi_get_target_to_extent"
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#
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sub freenas_list_lu {
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my ($scfg) = @_;
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my $targets = freenas_iscsi_get_target($scfg);
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my $target_id = freenas_get_targetid($scfg);
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my @luns = ();
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if( defined($target_id) ) {
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my $target2extents = freenas_iscsi_get_target_to_extent($scfg);
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my $extents = freenas_iscsi_get_extent($scfg);
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foreach my $item ( @$target2extents ) {
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if( $item->{'iscsi_target'} == $target_id ) {
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foreach my $node ( @$extents ) {
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if( $node->{'id'} == $item->{'iscsi_extent'} ) {
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$node->{'iscsi_lunid'} .= $item->{'iscsi_lunid'};
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push( @luns , $node );
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}
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}
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}
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}
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}
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syslog("info","FreeNAS::API::freenas_list_lu : sucessfull");
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return \@luns;
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}
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# Returns the first available "lunid" (in all targets namespaces)
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#
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sub freenas_get_first_available_lunid {
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my ($scfg) = @_;
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my $target_id = freenas_get_targetid($scfg);
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my $target2extents = freenas_iscsi_get_target_to_extent($scfg);
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my @luns = ();
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foreach my $item ( @$target2extents ) {
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push(@luns, $item->{'iscsi_lunid'}) if ($item->{'iscsi_target'} == $target_id);
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}
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my @sorted_luns = sort { $a <=> $b } @luns;
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my $lun_id = 0;
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# find the first hole, if not, give the +1 of the last lun
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foreach my $lun ( @sorted_luns ) {
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last if $lun != $lun_id;
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$lun_id = $lun_id + 1;
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}
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syslog("info","FreeNAS::API::freenas_get_first_available_lunid : return $lun_id");
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return $lun_id;
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}
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#
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# Returns the target id on FreeNas of the currently configured target of this PVE storage
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#
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sub freenas_get_targetid {
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my ($scfg) = @_;
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my $global = freenas_iscsi_get_globalconfiguration($scfg);
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my $targets = freenas_iscsi_get_target($scfg);
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my $target_id = undef;
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foreach my $target ( @$targets ) {
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my $iqn = $global->{'iscsi_basename'} . ':' . $target->{'iscsi_target_name'};
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if( $iqn eq $scfg->{target} ) { $target_id = $target->{'id'}; last }
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}
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return $target_id;
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}
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1;
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