mirror of
https://git.proxmox.com/git/qemu-server
synced 2025-05-01 02:30:05 +00:00
140 lines
4.0 KiB
Perl
140 lines
4.0 KiB
Perl
package PVE::QemuServer::Memory;
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use strict;
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use warnings;
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use PVE::QemuServer;
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my $MAX_MEM = 4194304;
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my $STATICMEM = 1024;
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sub foreach_dimm{
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my ($conf, $vmid, $memory, $sockets, $func) = @_;
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my $dimm_id = 0;
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my $current_size = 1024;
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my $dimm_size = 512;
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return if $current_size == $memory;
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for (my $j = 0; $j < 8; $j++) {
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for (my $i = 0; $i < 32; $i++) {
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my $name = "dimm${dimm_id}";
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$dimm_id++;
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my $numanode = $i % $sockets;
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$current_size += $dimm_size;
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&$func($conf, $vmid, $name, $dimm_size, $numanode, $current_size, $memory);
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return $current_size if $current_size >= $memory;
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}
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$dimm_size *= 2;
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}
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}
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sub foreach_reverse_dimm {
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my ($conf, $vmid, $memory, $sockets, $func) = @_;
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my $dimm_id = 253;
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my $current_size = 4177920;
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my $dimm_size = 65536;
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return if $current_size == $memory;
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for (my $j = 0; $j < 8; $j++) {
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for (my $i = 0; $i < 32; $i++) {
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my $name = "dimm${dimm_id}";
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$dimm_id--;
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my $numanode = $i % $sockets;
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$current_size -= $dimm_size;
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&$func($conf, $vmid, $name, $dimm_size, $numanode, $current_size, $memory);
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return $current_size if $current_size <= $memory;
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}
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$dimm_size /= 2;
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}
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}
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sub qemu_memory_hotplug {
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my ($vmid, $conf, $defaults, $opt, $value) = @_;
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return $value if !check_running($vmid);
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my $memory = $conf->{memory} || $defaults->{memory};
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$value = $defaults->{memory} if !$value;
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return $value if $value == $memory;
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my $static_memory = $STATICMEM;
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my $dimm_memory = $memory - $static_memory;
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die "memory can't be lower than $static_memory MB" if $value < $static_memory;
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die "you cannot add more memory than $MAX_MEM MB!\n" if $memory > $MAX_MEM;
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my $sockets = 1;
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$sockets = $conf->{sockets} if $conf->{sockets};
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if($value > $memory) {
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foreach_dimm($conf, $vmid, $value, $sockets, sub {
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my ($conf, $vmid, $name, $dimm_size, $numanode, $current_size, $memory) = @_;
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return if $current_size <= $conf->{memory};
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eval { PVE::QemuServer::vm_mon_cmd($vmid, "object-add", 'qom-type' => "memory-backend-ram", id => "mem-$name", props => { size => int($dimm_size*1024*1024) } ) };
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if (my $err = $@) {
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eval { PVE::QemuServer::qemu_objectdel($vmid, "mem-$name"); };
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die $err;
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}
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eval { PVE::QemuServer::vm_mon_cmd($vmid, "device_add", driver => "pc-dimm", id => "$name", memdev => "mem-$name", node => $numanode) };
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if (my $err = $@) {
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eval { PVE::QemuServer::qemu_objectdel($vmid, "mem-$name"); };
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die $err;
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}
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#update conf after each succesful module hotplug
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$conf->{memory} = $current_size;
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PVE::QemuConfig->write_config($vmid, $conf);
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});
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} else {
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foreach_reverse_dimm($conf, $vmid, $value, $sockets, sub {
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my ($conf, $vmid, $name, $dimm_size, $numanode, $current_size, $memory) = @_;
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return if $current_size >= $conf->{memory};
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print "try to unplug memory dimm $name\n";
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my $retry = 0;
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while (1) {
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eval { PVE::QemuServer::qemu_devicedel($vmid, $name) };
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sleep 3;
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my $dimm_list = qemu_dimm_list($vmid);
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last if !$dimm_list->{$name};
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raise_param_exc({ $name => "error unplug memory module" }) if $retry > 5;
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$retry++;
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}
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#update conf after each succesful module unplug
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$conf->{memory} = $current_size;
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eval { PVE::QemuServer::qemu_objectdel($vmid, "mem-$name"); };
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PVE::QemuConfig->write_config($vmid, $conf);
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});
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}
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}
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sub qemu_dimm_list {
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my ($vmid) = @_;
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my $dimmarray = PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "query-memory-devices");
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my $dimms = {};
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foreach my $dimm (@$dimmarray) {
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$dimms->{$dimm->{data}->{id}}->{id} = $dimm->{data}->{id};
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$dimms->{$dimm->{data}->{id}}->{node} = $dimm->{data}->{node};
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$dimms->{$dimm->{data}->{id}}->{addr} = $dimm->{data}->{addr};
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$dimms->{$dimm->{data}->{id}}->{size} = $dimm->{data}->{size};
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$dimms->{$dimm->{data}->{id}}->{slot} = $dimm->{data}->{slot};
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}
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return $dimms;
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}
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1;
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