[pve-devel] [PATCH v2 qemu-server 6/7] fix vm_resume and allow vm_start with QMP status 'shutdown'
Stefan Reiter
s.reiter at proxmox.com
Mon Oct 19 14:18:41 CEST 2020
When the VM is in status 'shutdown', i.e. after the guest issues a
powerdown while a backup is running, QEMU requires a 'system_reset' to
be issued before 'cont' can boot the guest again.
Additionally, when the VM has been powered down during a backup, the
logically correct call would be a 'vm_start', so automatically vm_resume
from vm_start in case this situation occurs. This also means the GUI can
cope with this almost unchanged.
Signed-off-by: Stefan Reiter <s.reiter at proxmox.com>
---
PVE/QemuServer.pm | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index c712671..22484ca 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -4860,13 +4860,22 @@ sub vm_start {
if !$params->{skiptemplate} && PVE::QemuConfig->is_template($conf);
my $has_suspended_lock = PVE::QemuConfig->has_lock($conf, 'suspended');
+ my $has_backup_lock = PVE::QemuConfig->has_lock($conf, 'backup');
+
+ my $running = check_running($vmid, undef, $migrate_opts->{migratedfrom});
+
+ if ($has_backup_lock && $running) {
+ # a backup is currently running, attempt to start the guest in the
+ # existing QEMU instance
+ return vm_resume($vmid);
+ }
PVE::QemuConfig->check_lock($conf)
if !($params->{skiplock} || $has_suspended_lock);
$params->{resume} = $has_suspended_lock || defined($conf->{vmstate});
- die "VM $vmid already running\n" if check_running($vmid, undef, $migrate_opts->{migratedfrom});
+ die "VM $vmid already running\n" if $running;
if (my $storagemap = $migrate_opts->{storagemap}) {
my $replicated = $migrate_opts->{replicated_volumes};
@@ -5546,9 +5555,12 @@ sub vm_resume {
PVE::QemuConfig->lock_config($vmid, sub {
my $res = mon_cmd($vmid, 'query-status');
my $resume_cmd = 'cont';
+ my $reset = 0;
- if ($res->{status} && $res->{status} eq 'suspended') {
- $resume_cmd = 'system_wakeup';
+ if ($res->{status}) {
+ return if $res->{status} eq 'running'; # job done, go home
+ $resume_cmd = 'system_wakeup' if $res->{status} eq 'suspended';
+ $reset = 1 if $res->{status} eq 'shutdown';
}
if (!$nocheck) {
@@ -5559,6 +5571,11 @@ sub vm_resume {
if !($skiplock || PVE::QemuConfig->has_lock($conf, 'backup'));
}
+ if ($reset) {
+ # required if a VM shuts down during a backup and we get a resume
+ # request before the backup finishes for example
+ mon_cmd($vmid, "system_reset");
+ }
mon_cmd($vmid, $resume_cmd);
});
}
--
2.20.1
More information about the pve-devel
mailing list