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1 | package PVE::Storage::NFSPlugin; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use IO::File; | |
6 | use File::Path; | |
7 | use PVE::Tools qw(run_command); | |
8 | use PVE::Storage::Plugin; | |
9 | use PVE::JSONSchema qw(get_standard_option); | |
10 | ||
11 | use base qw(PVE::Storage::Plugin); | |
12 | ||
13 | # NFS helper functions | |
14 | ||
15 | sub read_proc_mounts { | |
16 | ||
17 | local $/; # enable slurp mode | |
18 | ||
19 | my $data = ""; | |
20 | if (my $fd = IO::File->new("/proc/mounts", "r")) { | |
21 | $data = <$fd>; | |
22 | close ($fd); | |
23 | } | |
24 | ||
25 | return $data; | |
26 | } | |
27 | ||
28 | sub nfs_is_mounted { | |
29 | my ($server, $export, $mountpoint, $mountdata) = @_; | |
30 | ||
31 | my $source = "$server:$export"; | |
32 | ||
33 | $mountdata = read_proc_mounts() if !$mountdata; | |
34 | ||
35 | if ($mountdata =~ m|^$source/?\s$mountpoint\snfs|m) { | |
36 | return $mountpoint; | |
37 | } | |
38 | ||
39 | return undef; | |
40 | } | |
41 | ||
42 | sub nfs_mount { | |
43 | my ($server, $export, $mountpoint, $options) = @_; | |
44 | ||
45 | my $source = "$server:$export"; | |
46 | ||
47 | my $cmd = ['/bin/mount', '-t', 'nfs', $source, $mountpoint]; | |
48 | if ($options) { | |
49 | push @$cmd, '-o', $options; | |
50 | } | |
51 | ||
52 | run_command($cmd, errmsg => "mount error"); | |
53 | } | |
54 | ||
55 | # Configuration | |
56 | ||
57 | sub type { | |
58 | return 'nfs'; | |
59 | } | |
60 | ||
61 | sub plugindata { | |
62 | return { | |
63 | content => [ { images => 1, rootdir => 1, vztmpl => 1, iso => 1, backup => 1}, | |
64 | { images => 1 }], | |
65 | format => [ { raw => 1, qcow2 => 1, vmdk => 1 } , 'raw' ], | |
66 | }; | |
67 | } | |
68 | ||
69 | sub properties { | |
70 | return { | |
71 | export => { | |
72 | description => "NFS export path.", | |
73 | type => 'string', format => 'pve-storage-path', | |
74 | }, | |
75 | server => { | |
76 | description => "Server IP or DNS name.", | |
77 | type => 'string', format => 'pve-storage-server', | |
78 | }, | |
79 | options => { | |
80 | description => "NFS mount options (see 'man nfs')", | |
81 | type => 'string', format => 'pve-storage-options', | |
82 | }, | |
83 | }; | |
84 | } | |
85 | ||
86 | sub options { | |
87 | return { | |
88 | path => { fixed => 1 }, | |
89 | server => { fixed => 1 }, | |
90 | export => { fixed => 1 }, | |
91 | nodes => { optional => 1 }, | |
92 | disable => { optional => 1 }, | |
93 | maxfiles => { optional => 1 }, | |
94 | options => { optional => 1 }, | |
95 | content => { optional => 1 }, | |
96 | format => { optional => 1 }, | |
97 | }; | |
98 | } | |
99 | ||
100 | ||
101 | sub check_config { | |
102 | my ($class, $sectionId, $config, $create, $skipSchemaCheck) = @_; | |
103 | ||
104 | $config->{path} = "/mnt/pve/$sectionId" if $create && !$config->{path}; | |
105 | ||
106 | return $class->SUPER::check_config($sectionId, $config, $create, $skipSchemaCheck); | |
107 | } | |
108 | ||
109 | # Storage implementation | |
110 | ||
111 | sub status { | |
112 | my ($class, $storeid, $scfg, $cache) = @_; | |
113 | ||
114 | $cache->{mountdata} = read_proc_mounts() if !$cache->{mountdata}; | |
115 | ||
116 | my $path = $scfg->{path}; | |
117 | my $server = $scfg->{server}; | |
118 | my $export = $scfg->{export}; | |
119 | ||
120 | return undef if !nfs_is_mounted($server, $export, $path, $cache->{mountdata}); | |
121 | ||
122 | return $class->SUPER::status($storeid, $scfg, $cache); | |
123 | } | |
124 | ||
125 | sub activate_storage { | |
126 | my ($class, $storeid, $scfg, $cache) = @_; | |
127 | ||
128 | $cache->{mountdata} = read_proc_mounts() if !$cache->{mountdata}; | |
129 | ||
130 | my $path = $scfg->{path}; | |
131 | my $server = $scfg->{server}; | |
132 | my $export = $scfg->{export}; | |
133 | ||
134 | if (!nfs_is_mounted($server, $export, $path, $cache->{mountdata})) { | |
135 | ||
136 | # NOTE: only call mkpath when not mounted (avoid hang | |
137 | # when NFS server is offline | |
138 | ||
139 | mkpath $path; | |
140 | ||
141 | die "unable to activate storage '$storeid' - " . | |
142 | "directory '$path' does not exist\n" if ! -d $path; | |
143 | ||
144 | nfs_mount($server, $export, $path, $scfg->{options}); | |
145 | } | |
146 | ||
147 | $class->SUPER::activate_storage($storeid, $scfg, $cache); | |
148 | } | |
149 | ||
150 | sub deactivate_storage { | |
151 | my ($class, $storeid, $scfg, $cache) = @_; | |
152 | ||
153 | $cache->{mountdata} = read_proc_mounts() if !$cache->{mountdata}; | |
154 | ||
155 | my $path = $scfg->{path}; | |
156 | my $server = $scfg->{server}; | |
157 | my $export = $scfg->{export}; | |
158 | ||
159 | if (nfs_is_mounted($server, $export, $path, $cache->{mountdata})) { | |
160 | my $cmd = ['/bin/umount', $path]; | |
161 | run_command($cmd, errmsg => 'umount error'); | |
162 | } | |
163 | } | |
164 | ||
165 | sub check_connection { | |
166 | my ($class, $storeid, $scfg) = @_; | |
167 | ||
168 | my $server = $scfg->{server}; | |
169 | my $p = Net::Ping->new(); | |
170 | return $p->ping($server, 2); | |
171 | ||
172 | } | |
173 | 1; |