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From: Dominik Csapak <d.csapak@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Thu, 25 Aug 2022 11:24:15 +0200
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Subject: [pve-devel] [PATCH qemu-server v2 01/13] cleanup pci devices in
more situations
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if the preparing of pci devices or the start of the vm fails, we need
to cleanup the pci devices (reservations *and* mdevs), or else
it might happen that there are leftovers which must be manually removed.
to include also mdevs now, refactor the cleanup code from 'vm_stop_cleanup'
into it's own function, and call that instead of only 'remove_pci_reservation'
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
PVE/QemuServer.pm | 34 ++++++++++++++++++----------------
PVE/QemuServer/PCI.pm | 12 +++++++-----
2 files changed, 25 insertions(+), 21 deletions(-)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index c706653..b3c3ce0 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -5609,7 +5609,7 @@ sub vm_start_nolock {
push @$cmd, '-uuid', $uuid if defined($uuid);
};
if (my $err = $@) {
- eval { PVE::QemuServer::PCI::remove_pci_reservation($pci_id_list) };
+ eval { cleanup_pci_devices($vmid, $conf) };
warn $@ if $@;
die $err;
}
@@ -5705,7 +5705,9 @@ sub vm_start_nolock {
if (my $err = $@) {
# deactivate volumes if start fails
eval { PVE::Storage::deactivate_volumes($storecfg, $vollist); };
- eval { PVE::QemuServer::PCI::remove_pci_reservation($pci_id_list) };
+ warn $@ if $@;
+ eval { cleanup_pci_devices($vmid, $conf) };
+ warn $@ if $@;
die "start failed: $err";
}
@@ -5870,6 +5872,19 @@ sub get_vm_volumes {
return $vollist;
}
+sub cleanup_pci_devices {
+ my ($vmid, $conf) = @_;
+
+ foreach my $key (keys %$conf) {
+ next if $key !~ m/^hostpci(\d+)$/;
+ my $hostpciindex = $1;
+ my $uuid = PVE::SysFSTools::generate_mdev_uuid($vmid, $hostpciindex);
+ my $d = parse_hostpci($conf->{$key});
+ PVE::SysFSTools::pci_cleanup_mdev_device($uuid) if $d->{mdev};
+ }
+ PVE::QemuServer::PCI::remove_pci_reservation($vmid);
+}
+
sub vm_stop_cleanup {
my ($storecfg, $vmid, $conf, $keepActive, $apply_pending_changes) = @_;
@@ -5901,20 +5916,7 @@ sub vm_stop_cleanup {
unlink '/dev/shm/pve-shm-' . ($ivshmem->{name} // $vmid);
}
- my $ids = [];
- foreach my $key (keys %$conf) {
- next if $key !~ m/^hostpci(\d+)$/;
- my $hostpciindex = $1;
- my $d = parse_hostpci($conf->{$key});
- my $uuid = PVE::SysFSTools::generate_mdev_uuid($vmid, $hostpciindex);
-
- foreach my $pci (@{$d->{pciid}}) {
- my $pciid = $pci->{id};
- push @$ids, $pci->{id};
- PVE::SysFSTools::pci_cleanup_mdev_device($pciid, $uuid);
- }
- }
- PVE::QemuServer::PCI::remove_pci_reservation($ids);
+ cleanup_pci_devices($vmid, $conf);
vmconfig_apply_pending($vmid, $conf, $storecfg) if $apply_pending_changes;
};
diff --git a/PVE/QemuServer/PCI.pm b/PVE/QemuServer/PCI.pm
index 3d0e70e..788ab2a 100644
--- a/PVE/QemuServer/PCI.pm
+++ b/PVE/QemuServer/PCI.pm
@@ -552,15 +552,17 @@ my $write_pci_reservation_unlocked = sub {
PVE::Tools::file_set_contents($PCIID_RESERVATION_FILE, $data);
};
+# removes all pci reservations of the given vmid
sub remove_pci_reservation {
- my ($dropped_ids) = @_;
-
- $dropped_ids = [ $dropped_ids ] if !ref($dropped_ids);
- return if !scalar(@$dropped_ids); # do nothing for empty list
+ my ($vmid) = @_;
PVE::Tools::lock_file($PCIID_RESERVATION_LOCK, 2, sub {
my $reservation_list = $parse_pci_reservation_unlocked->();
- delete $reservation_list->@{$dropped_ids->@*};
+ for my $id (keys %$reservation_list) {
+ my $reservation = $reservation_list->{$id};
+ next if $reservation->{vmid} != $vmid;
+ delete $reservation_list->{$id};
+ }
$write_pci_reservation_unlocked->($reservation_list);
});
die $@ if $@;
--
2.30.2