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Commit | Line | Data |
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58a3c91c FG |
1 | package PVE::AbstractMigrate; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use POSIX qw(strftime); | |
6 | use PVE::Tools; | |
7 | ||
8 | my $msg2text = sub { | |
9 | my ($level, $msg) = @_; | |
10 | ||
11 | chomp $msg; | |
12 | ||
13 | return '' if !$msg; | |
14 | ||
15 | my $res = ''; | |
16 | ||
9ed0fe88 | 17 | my $tstr = strftime("%F %H:%M:%S", localtime); |
58a3c91c FG |
18 | |
19 | foreach my $line (split (/\n/, $msg)) { | |
20 | if ($level eq 'err') { | |
21 | $res .= "$tstr ERROR: $line\n"; | |
22 | } else { | |
23 | $res .= "$tstr $line\n"; | |
24 | } | |
25 | } | |
26 | ||
27 | return $res; | |
28 | }; | |
29 | ||
30 | sub log { | |
31 | my ($self, $level, $msg) = @_; | |
32 | ||
33 | chomp $msg; | |
34 | ||
35 | return if !$msg; | |
36 | ||
37 | print &$msg2text($level, $msg); | |
38 | } | |
39 | ||
40 | sub cmd { | |
41 | my ($self, $cmd, %param) = @_; | |
42 | ||
43 | my $logfunc = sub { | |
44 | my $line = shift; | |
45 | $self->log('info', $line); | |
46 | }; | |
47 | ||
48 | $self->log('info', "# " . PVE::Tools::cmd2string($cmd)); | |
49 | ||
50 | PVE::Tools::run_command($cmd, %param, outfunc => $logfunc, errfunc => $logfunc); | |
51 | } | |
52 | ||
53 | my $run_command_quiet_full = sub { | |
54 | my ($self, $cmd, $logerr, %param) = @_; | |
55 | ||
56 | my $log = ''; | |
57 | my $logfunc = sub { | |
58 | my $line = shift; | |
59 | $log .= &$msg2text('info', $line);; | |
60 | }; | |
61 | ||
62 | eval { PVE::Tools::run_command($cmd, %param, outfunc => $logfunc, errfunc => $logfunc); }; | |
63 | if (my $err = $@) { | |
64 | $self->log('info', "# " . PVE::Tools::cmd2string($cmd)); | |
65 | print $log; | |
66 | if ($logerr) { | |
67 | $self->{errors} = 1; | |
68 | $self->log('err', $err); | |
69 | } else { | |
70 | die $err; | |
71 | } | |
72 | } | |
73 | }; | |
74 | ||
75 | sub cmd_quiet { | |
76 | my ($self, $cmd, %param) = @_; | |
77 | return &$run_command_quiet_full($self, $cmd, 0, %param); | |
78 | } | |
79 | ||
80 | sub cmd_logerr { | |
81 | my ($self, $cmd, %param) = @_; | |
82 | return &$run_command_quiet_full($self, $cmd, 1, %param); | |
83 | } | |
84 | ||
85 | sub get_remote_migration_ip { | |
86 | my ($self) = @_; | |
87 | ||
88 | my $ip; | |
89 | ||
90 | my $cmd = [@{$self->{rem_ssh}}, 'pvecm', 'mtunnel', '--get_migration_ip']; | |
91 | ||
92 | push @$cmd, '--migration_network', $self->{opts}->{migration_network} | |
93 | if defined($self->{opts}->{migration_network}); | |
94 | ||
95 | PVE::Tools::run_command($cmd, outfunc => sub { | |
96 | my $line = shift; | |
97 | ||
98 | if ($line =~ m/^ip: '($PVE::Tools::IPRE)'$/) { | |
99 | $ip = $1; | |
100 | } | |
101 | }); | |
102 | ||
103 | return $ip; | |
104 | } | |
105 | ||
106 | my $eval_int = sub { | |
107 | my ($self, $func, @param) = @_; | |
108 | ||
109 | eval { | |
110 | local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = sub { | |
111 | $self->{delayed_interrupt} = 0; | |
112 | die "interrupted by signal\n"; | |
113 | }; | |
114 | local $SIG{PIPE} = sub { | |
115 | $self->{delayed_interrupt} = 0; | |
116 | die "interrupted by signal\n"; | |
117 | }; | |
118 | ||
119 | my $di = $self->{delayed_interrupt}; | |
120 | $self->{delayed_interrupt} = 0; | |
121 | ||
122 | die "interrupted by signal\n" if $di; | |
123 | ||
124 | &$func($self, @param); | |
125 | }; | |
126 | }; | |
127 | ||
128 | my @ssh_opts = ('-o', 'BatchMode=yes'); | |
129 | my @ssh_cmd = ('/usr/bin/ssh', @ssh_opts); | |
58a3c91c FG |
130 | |
131 | sub migrate { | |
132 | my ($class, $node, $nodeip, $vmid, $opts) = @_; | |
133 | ||
134 | $class = ref($class) || $class; | |
135 | ||
136 | my $self = { | |
137 | delayed_interrupt => 0, | |
138 | opts => $opts, | |
139 | vmid => $vmid, | |
140 | node => $node, | |
141 | nodeip => $nodeip, | |
58a3c91c | 142 | rem_ssh => [ @ssh_cmd, "root\@$nodeip" ], |
58a3c91c FG |
143 | }; |
144 | ||
145 | $self = bless $self, $class; | |
146 | ||
147 | my $starttime = time(); | |
148 | ||
58a3c91c FG |
149 | local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = $SIG{PIPE} = sub { |
150 | $self->log('err', "received interrupt - delayed"); | |
151 | $self->{delayed_interrupt} = 1; | |
152 | }; | |
153 | ||
58a3c91c FG |
154 | # lock container during migration |
155 | eval { $self->lock_vm($self->{vmid}, sub { | |
156 | ||
157 | $self->{running} = 0; | |
158 | &$eval_int($self, sub { $self->{running} = $self->prepare($self->{vmid}); }); | |
159 | die $@ if $@; | |
160 | ||
161 | # get dedicated migration address from remote node, if set. | |
162 | # as a side effect this checks also if the other node can be accessed | |
163 | # through ssh and that it has quorum | |
164 | my $remote_migration_ip = $self->get_remote_migration_ip(); | |
165 | ||
166 | if (defined($remote_migration_ip)) { | |
167 | $nodeip = $remote_migration_ip; | |
168 | $self->{nodeip} = $remote_migration_ip; | |
169 | $self->{rem_ssh} = [ @ssh_cmd, "root\@$nodeip" ]; | |
170 | ||
171 | $self->log('info', "use dedicated network address for sending " . | |
172 | "migration traffic ($self->{nodeip})"); | |
173 | ||
174 | # test if we can connect to new IP | |
175 | my $cmd = [ @{$self->{rem_ssh}}, '/bin/true' ]; | |
176 | eval { $self->cmd_quiet($cmd); }; | |
177 | die "Can't connect to destination address ($self->{nodeip}) using " . | |
178 | "public key authentication\n" if $@; | |
179 | } | |
180 | ||
181 | &$eval_int($self, sub { $self->phase1($self->{vmid}); }); | |
182 | my $err = $@; | |
183 | if ($err) { | |
184 | $self->log('err', $err); | |
185 | eval { $self->phase1_cleanup($self->{vmid}, $err); }; | |
186 | if (my $tmperr = $@) { | |
187 | $self->log('err', $tmperr); | |
188 | } | |
189 | eval { $self->final_cleanup($self->{vmid}); }; | |
190 | if (my $tmperr = $@) { | |
191 | $self->log('err', $tmperr); | |
192 | } | |
193 | die $err; | |
194 | } | |
195 | ||
196 | # vm is now owned by other node | |
197 | # Note: there is no VM config file on the local node anymore | |
198 | ||
199 | if ($self->{running}) { | |
200 | ||
201 | &$eval_int($self, sub { $self->phase2($self->{vmid}); }); | |
202 | my $phase2err = $@; | |
203 | if ($phase2err) { | |
204 | $self->{errors} = 1; | |
205 | $self->log('err', "online migrate failure - $phase2err"); | |
206 | } | |
207 | eval { $self->phase2_cleanup($self->{vmid}, $phase2err); }; | |
208 | if (my $err = $@) { | |
209 | $self->log('err', $err); | |
210 | $self->{errors} = 1; | |
211 | } | |
212 | } | |
213 | ||
214 | # phase3 (finalize) | |
215 | &$eval_int($self, sub { $self->phase3($self->{vmid}); }); | |
216 | my $phase3err = $@; | |
217 | if ($phase3err) { | |
218 | $self->log('err', $phase3err); | |
219 | $self->{errors} = 1; | |
220 | } | |
221 | eval { $self->phase3_cleanup($self->{vmid}, $phase3err); }; | |
222 | if (my $err = $@) { | |
223 | $self->log('err', $err); | |
224 | $self->{errors} = 1; | |
225 | } | |
226 | eval { $self->final_cleanup($self->{vmid}); }; | |
227 | if (my $err = $@) { | |
228 | $self->log('err', $err); | |
229 | $self->{errors} = 1; | |
230 | } | |
231 | })}; | |
232 | ||
233 | my $err = $@; | |
234 | ||
235 | my $delay = time() - $starttime; | |
236 | my $mins = int($delay/60); | |
237 | my $secs = $delay - $mins*60; | |
238 | my $hours = int($mins/60); | |
239 | $mins = $mins - $hours*60; | |
240 | ||
241 | my $duration = sprintf "%02d:%02d:%02d", $hours, $mins, $secs; | |
242 | ||
243 | if ($err) { | |
244 | $self->log('err', "migration aborted (duration $duration): $err"); | |
245 | die "migration aborted\n"; | |
246 | } | |
247 | ||
248 | if ($self->{errors}) { | |
249 | $self->log('err', "migration finished with problems (duration $duration)"); | |
250 | die "migration problems\n" | |
251 | } | |
252 | ||
253 | $self->log('info', "migration finished successfully (duration $duration)"); | |
254 | } | |
255 | ||
256 | sub lock_vm { | |
257 | my ($self, $vmid, $code, @param) = @_; | |
258 | ||
259 | die "abstract method - implement me"; | |
260 | } | |
261 | ||
262 | sub prepare { | |
263 | my ($self, $vmid) = @_; | |
264 | ||
265 | die "abstract method - implement me"; | |
266 | ||
267 | # return $running; | |
268 | } | |
269 | ||
270 | # transfer all data and move VM config files | |
271 | sub phase1 { | |
272 | my ($self, $vmid) = @_; | |
273 | die "abstract method - implement me"; | |
274 | } | |
275 | ||
276 | # only called if there are errors in phase1 | |
277 | sub phase1_cleanup { | |
278 | my ($self, $vmid, $err) = @_; | |
279 | die "abstract method - implement me"; | |
280 | } | |
281 | ||
282 | # only called when VM is running and phase1 was successful | |
283 | sub phase2 { | |
284 | my ($self, $vmid) = @_; | |
285 | die "abstract method - implement me"; | |
286 | } | |
287 | ||
288 | # only called when VM is running and phase1 was successful | |
289 | sub phase2_cleanup { | |
290 | my ($self, $vmid, $err) = @_; | |
291 | }; | |
292 | ||
293 | # only called when phase1 was successful | |
294 | sub phase3 { | |
295 | my ($self, $vmid) = @_; | |
296 | } | |
297 | ||
298 | # only called when phase1 was successful | |
299 | sub phase3_cleanup { | |
300 | my ($self, $vmid, $err) = @_; | |
301 | } | |
302 | ||
303 | # final cleanup - always called | |
304 | sub final_cleanup { | |
305 | my ($self, $vmid) = @_; | |
306 | die "abstract method - implement me"; | |
307 | } | |
308 | ||
309 | 1; |