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1 | package PVE::QemuServer::Helpers; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
6 | use File::stat; | |
7 | use JSON; | |
8 | ||
9 | use PVE::INotify; | |
10 | use PVE::ProcFSTools; | |
11 | ||
12 | use base 'Exporter'; | |
13 | our @EXPORT_OK = qw( | |
14 | min_version | |
15 | config_aware_timeout | |
16 | parse_number_sets | |
17 | windows_version | |
18 | ); | |
19 | ||
20 | my $nodename = PVE::INotify::nodename(); | |
21 | ||
22 | # Paths and directories | |
23 | ||
24 | our $var_run_tmpdir = "/var/run/qemu-server"; | |
25 | mkdir $var_run_tmpdir; | |
26 | ||
27 | sub qmp_socket { | |
28 | my ($vmid, $qga) = @_; | |
29 | my $sockettype = $qga ? 'qga' : 'qmp'; | |
30 | return "${var_run_tmpdir}/$vmid.$sockettype"; | |
31 | } | |
32 | ||
33 | sub pidfile_name { | |
34 | my ($vmid) = @_; | |
35 | return "${var_run_tmpdir}/$vmid.pid"; | |
36 | } | |
37 | ||
38 | sub vnc_socket { | |
39 | my ($vmid) = @_; | |
40 | return "${var_run_tmpdir}/$vmid.vnc"; | |
41 | } | |
42 | ||
43 | # Parse the cmdline of a running kvm/qemu process and return arguments as hash | |
44 | sub parse_cmdline { | |
45 | my ($pid) = @_; | |
46 | ||
47 | my $fh = IO::File->new("/proc/$pid/cmdline", "r"); | |
48 | if (defined($fh)) { | |
49 | my $line = <$fh>; | |
50 | $fh->close; | |
51 | return if !$line; | |
52 | my @param = split(/\0/, $line); | |
53 | ||
54 | my $cmd = $param[0]; | |
55 | return if !$cmd || ($cmd !~ m|kvm$| && $cmd !~ m@(?:^|/)qemu-system-[^/]+$@); | |
56 | ||
57 | my $phash = {}; | |
58 | my $pending_cmd; | |
59 | for (my $i = 0; $i < scalar (@param); $i++) { | |
60 | my $p = $param[$i]; | |
61 | next if !$p; | |
62 | ||
63 | if ($p =~ m/^--?(.*)$/) { | |
64 | if ($pending_cmd) { | |
65 | $phash->{$pending_cmd} = {}; | |
66 | } | |
67 | $pending_cmd = $1; | |
68 | } elsif ($pending_cmd) { | |
69 | $phash->{$pending_cmd} = { value => $p }; | |
70 | $pending_cmd = undef; | |
71 | } | |
72 | } | |
73 | ||
74 | return $phash; | |
75 | } | |
76 | return; | |
77 | } | |
78 | ||
79 | sub vm_running_locally { | |
80 | my ($vmid) = @_; | |
81 | ||
82 | my $pidfile = pidfile_name($vmid); | |
83 | ||
84 | if (my $fd = IO::File->new("<$pidfile")) { | |
85 | my $st = stat($fd); | |
86 | my $line = <$fd>; | |
87 | close($fd); | |
88 | ||
89 | my $mtime = $st->mtime; | |
90 | if ($mtime > time()) { | |
91 | warn "file '$pidfile' modified in future\n"; | |
92 | } | |
93 | ||
94 | if ($line =~ m/^(\d+)$/) { | |
95 | my $pid = $1; | |
96 | my $cmdline = parse_cmdline($pid); | |
97 | if ($cmdline && defined($cmdline->{pidfile}) && $cmdline->{pidfile}->{value} | |
98 | && $cmdline->{pidfile}->{value} eq $pidfile) { | |
99 | if (my $pinfo = PVE::ProcFSTools::check_process_running($pid)) { | |
100 | return $pid; | |
101 | } | |
102 | } | |
103 | } | |
104 | } | |
105 | ||
106 | return; | |
107 | } | |
108 | ||
109 | sub min_version { | |
110 | my ($verstr, $major, $minor, $pve) = @_; | |
111 | ||
112 | if ($verstr =~ m/^(\d+)\.(\d+)(?:\.(\d+))?(?:\+pve(\d+))?/) { | |
113 | return 1 if version_cmp($1, $major, $2, $minor, $4, $pve) >= 0; | |
114 | return 0; | |
115 | } | |
116 | ||
117 | die "internal error: cannot check version of invalid string '$verstr'"; | |
118 | } | |
119 | ||
120 | # gets in pairs the versions you want to compares, i.e.: | |
121 | # ($a-major, $b-major, $a-minor, $b-minor, $a-extra, $b-extra, ...) | |
122 | # returns 0 if same, -1 if $a is older than $b, +1 if $a is newer than $b | |
123 | sub version_cmp { | |
124 | my @versions = @_; | |
125 | ||
126 | my $size = scalar(@versions); | |
127 | ||
128 | return 0 if $size == 0; | |
129 | ||
130 | if ($size & 1) { | |
131 | my (undef, $fn, $line) = caller(0); | |
132 | die "cannot compare odd count of versions, called from $fn:$line\n"; | |
133 | } | |
134 | ||
135 | for (my $i = 0; $i < $size; $i += 2) { | |
136 | my ($a, $b) = splice(@versions, 0, 2); | |
137 | $a //= 0; | |
138 | $b //= 0; | |
139 | ||
140 | return 1 if $a > $b; | |
141 | return -1 if $a < $b; | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
146 | sub config_aware_timeout { | |
147 | my ($config, $memory, $is_suspended) = @_; | |
148 | my $timeout = 30; | |
149 | ||
150 | # Based on user reported startup time for vm with 512GiB @ 4-5 minutes | |
151 | if (defined($memory) && $memory > 30720) { | |
152 | $timeout = int($memory/1024); | |
153 | } | |
154 | ||
155 | # When using PCI passthrough, users reported much higher startup times, | |
156 | # growing with the amount of memory configured. Constant factor chosen | |
157 | # based on user reports. | |
158 | if (grep(/^hostpci[0-9]+$/, keys %$config)) { | |
159 | $timeout *= 4; | |
160 | } | |
161 | ||
162 | if ($is_suspended && $timeout < 300) { | |
163 | $timeout = 300; | |
164 | } | |
165 | ||
166 | if ($config->{hugepages} && $timeout < 150) { | |
167 | $timeout = 150; | |
168 | } | |
169 | ||
170 | return $timeout; | |
171 | } | |
172 | ||
173 | sub get_node_pvecfg_version { | |
174 | my ($node) = @_; | |
175 | ||
176 | my $nodes_version_info = PVE::Cluster::get_node_kv('version-info', $node); | |
177 | return if !$nodes_version_info->{$node}; | |
178 | ||
179 | my $version_info = decode_json($nodes_version_info->{$node}); | |
180 | return $version_info->{version}; | |
181 | } | |
182 | ||
183 | sub pvecfg_min_version { | |
184 | my ($verstr, $major, $minor, $release) = @_; | |
185 | ||
186 | return 0 if !$verstr; | |
187 | ||
188 | if ($verstr =~ m/^(\d+)\.(\d+)(?:[.-](\d+))?/) { | |
189 | return 1 if version_cmp($1, $major, $2, $minor, $3 // 0, $release) >= 0; | |
190 | return 0; | |
191 | } | |
192 | ||
193 | die "internal error: cannot check version of invalid string '$verstr'"; | |
194 | } | |
195 | ||
196 | sub parse_number_sets { | |
197 | my ($set) = @_; | |
198 | my $res = []; | |
199 | foreach my $part (split(/;/, $set)) { | |
200 | if ($part =~ /^\s*(\d+)(?:-(\d+))?\s*$/) { | |
201 | die "invalid range: $part ($2 < $1)\n" if defined($2) && $2 < $1; | |
202 | push @$res, [ $1, $2 ]; | |
203 | } else { | |
204 | die "invalid range: $part\n"; | |
205 | } | |
206 | } | |
207 | return $res; | |
208 | } | |
209 | ||
210 | sub windows_version { | |
211 | my ($ostype) = @_; | |
212 | ||
213 | return 0 if !$ostype; | |
214 | ||
215 | my $winversion = 0; | |
216 | ||
217 | if($ostype eq 'wxp' || $ostype eq 'w2k3' || $ostype eq 'w2k') { | |
218 | $winversion = 5; | |
219 | } elsif($ostype eq 'w2k8' || $ostype eq 'wvista') { | |
220 | $winversion = 6; | |
221 | } elsif ($ostype =~ m/^win(\d+)$/) { | |
222 | $winversion = $1; | |
223 | } | |
224 | ||
225 | return $winversion; | |
226 | } | |
227 | ||
228 | 1; |