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1 | package PVE::Storage::NFSPlugin; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use IO::File; | |
6 | use Net::IP; | |
7 | use File::Path; | |
8 | ||
9 | use PVE::Network; | |
10 | use PVE::Tools qw(run_command); | |
11 | use PVE::ProcFSTools; | |
12 | use PVE::Storage::Plugin; | |
13 | use PVE::JSONSchema qw(get_standard_option); | |
14 | ||
15 | use base qw(PVE::Storage::Plugin); | |
16 | ||
17 | # NFS helper functions | |
18 | ||
19 | sub nfs_is_mounted { | |
20 | my ($server, $export, $mountpoint, $mountdata) = @_; | |
21 | ||
22 | $server = "[$server]" if Net::IP::ip_is_ipv6($server); | |
23 | my $source = "$server:$export"; | |
24 | ||
25 | $mountdata = PVE::ProcFSTools::parse_proc_mounts() if !$mountdata; | |
26 | return $mountpoint if grep { | |
27 | $_->[2] =~ /^nfs/ && | |
28 | $_->[0] =~ m|^\Q$source\E/?$| && | |
29 | $_->[1] eq $mountpoint | |
30 | } @$mountdata; | |
31 | return undef; | |
32 | } | |
33 | ||
34 | sub nfs_mount { | |
35 | my ($server, $export, $mountpoint, $options) = @_; | |
36 | ||
37 | $server = "[$server]" if Net::IP::ip_is_ipv6($server); | |
38 | my $source = "$server:$export"; | |
39 | ||
40 | my $cmd = ['/bin/mount', '-t', 'nfs', $source, $mountpoint]; | |
41 | if ($options) { | |
42 | push @$cmd, '-o', $options; | |
43 | } | |
44 | ||
45 | run_command($cmd, errmsg => "mount error"); | |
46 | } | |
47 | ||
48 | # Configuration | |
49 | ||
50 | sub type { | |
51 | return 'nfs'; | |
52 | } | |
53 | ||
54 | sub plugindata { | |
55 | return { | |
56 | content => [ { images => 1, rootdir => 1, vztmpl => 1, iso => 1, backup => 1, snippets => 1 }, | |
57 | { images => 1 }], | |
58 | format => [ { raw => 1, qcow2 => 1, vmdk => 1 } , 'raw' ], | |
59 | }; | |
60 | } | |
61 | ||
62 | sub properties { | |
63 | return { | |
64 | export => { | |
65 | description => "NFS export path.", | |
66 | type => 'string', format => 'pve-storage-path', | |
67 | }, | |
68 | server => { | |
69 | description => "Server IP or DNS name.", | |
70 | type => 'string', format => 'pve-storage-server', | |
71 | }, | |
72 | options => { | |
73 | description => "NFS mount options (see 'man nfs')", | |
74 | type => 'string', format => 'pve-storage-options', | |
75 | }, | |
76 | }; | |
77 | } | |
78 | ||
79 | sub options { | |
80 | return { | |
81 | path => { fixed => 1 }, | |
82 | server => { fixed => 1 }, | |
83 | export => { fixed => 1 }, | |
84 | nodes => { optional => 1 }, | |
85 | disable => { optional => 1 }, | |
86 | maxfiles => { optional => 1 }, | |
87 | 'prune-backups' => { optional => 1 }, | |
88 | options => { optional => 1 }, | |
89 | content => { optional => 1 }, | |
90 | format => { optional => 1 }, | |
91 | mkdir => { optional => 1 }, | |
92 | bwlimit => { optional => 1 }, | |
93 | }; | |
94 | } | |
95 | ||
96 | ||
97 | sub check_config { | |
98 | my ($class, $sectionId, $config, $create, $skipSchemaCheck) = @_; | |
99 | ||
100 | $config->{path} = "/mnt/pve/$sectionId" if $create && !$config->{path}; | |
101 | ||
102 | return $class->SUPER::check_config($sectionId, $config, $create, $skipSchemaCheck); | |
103 | } | |
104 | ||
105 | # Storage implementation | |
106 | ||
107 | sub status { | |
108 | my ($class, $storeid, $scfg, $cache) = @_; | |
109 | ||
110 | $cache->{mountdata} = PVE::ProcFSTools::parse_proc_mounts() | |
111 | if !$cache->{mountdata}; | |
112 | ||
113 | my $path = $scfg->{path}; | |
114 | my $server = $scfg->{server}; | |
115 | my $export = $scfg->{export}; | |
116 | ||
117 | return undef if !nfs_is_mounted($server, $export, $path, $cache->{mountdata}); | |
118 | ||
119 | return $class->SUPER::status($storeid, $scfg, $cache); | |
120 | } | |
121 | ||
122 | sub activate_storage { | |
123 | my ($class, $storeid, $scfg, $cache) = @_; | |
124 | ||
125 | $cache->{mountdata} = PVE::ProcFSTools::parse_proc_mounts() | |
126 | if !$cache->{mountdata}; | |
127 | ||
128 | my $path = $scfg->{path}; | |
129 | my $server = $scfg->{server}; | |
130 | my $export = $scfg->{export}; | |
131 | ||
132 | if (!nfs_is_mounted($server, $export, $path, $cache->{mountdata})) { | |
133 | # NOTE: only call mkpath when not mounted (avoid hang when NFS server is offline | |
134 | mkpath $path if !(defined($scfg->{mkdir}) && !$scfg->{mkdir}); | |
135 | ||
136 | die "unable to activate storage '$storeid' - " . | |
137 | "directory '$path' does not exist\n" if ! -d $path; | |
138 | ||
139 | nfs_mount($server, $export, $path, $scfg->{options}); | |
140 | } | |
141 | ||
142 | $class->SUPER::activate_storage($storeid, $scfg, $cache); | |
143 | } | |
144 | ||
145 | sub deactivate_storage { | |
146 | my ($class, $storeid, $scfg, $cache) = @_; | |
147 | ||
148 | $cache->{mountdata} = PVE::ProcFSTools::parse_proc_mounts() | |
149 | if !$cache->{mountdata}; | |
150 | ||
151 | my $path = $scfg->{path}; | |
152 | my $server = $scfg->{server}; | |
153 | my $export = $scfg->{export}; | |
154 | ||
155 | if (nfs_is_mounted($server, $export, $path, $cache->{mountdata})) { | |
156 | my $cmd = ['/bin/umount', $path]; | |
157 | run_command($cmd, errmsg => 'umount error'); | |
158 | } | |
159 | } | |
160 | ||
161 | sub check_connection { | |
162 | my ($class, $storeid, $scfg) = @_; | |
163 | ||
164 | my $server = $scfg->{server}; | |
165 | my $opts = $scfg->{options}; | |
166 | ||
167 | my $cmd; | |
168 | if (defined($opts) && $opts =~ /vers=4.*/) { | |
169 | my $ip = PVE::JSONSchema::pve_verify_ip($server, 1); | |
170 | if (!defined($ip)) { | |
171 | $ip = PVE::Network::get_ip_from_hostname($server); | |
172 | } | |
173 | ||
174 | my $transport = PVE::JSONSchema::pve_verify_ipv4($ip, 1) ? 'tcp' : 'tcp6'; | |
175 | ||
176 | # nfsv4 uses a pseudo-filesystem always beginning with / | |
177 | # no exports are listed | |
178 | $cmd = ['/usr/sbin/rpcinfo', '-T', $transport, $ip, 'nfs', '4']; | |
179 | } else { | |
180 | $cmd = ['/sbin/showmount', '--no-headers', '--exports', $server]; | |
181 | } | |
182 | ||
183 | eval { run_command($cmd, timeout => 10, outfunc => sub {}, errfunc => sub {}) }; | |
184 | if (my $err = $@) { | |
185 | return 0; | |
186 | } | |
187 | ||
188 | return 1; | |
189 | } | |
190 | ||
191 | sub get_volume_notes { | |
192 | my $class = shift; | |
193 | PVE::Storage::DirPlugin::get_volume_notes($class, @_); | |
194 | } | |
195 | sub update_volume_notes { | |
196 | my $class = shift; | |
197 | PVE::Storage::DirPlugin::update_volume_notes($class, @_); | |
198 | } | |
199 | ||
200 | 1; |