From: Daniel Kral <d.kral@proxmox.com>
To: f.gruenbichler@proxmox.com
Cc: pve-devel@lists.proxmox.com
Subject: Re: [pve-devel] [PATCH v2 qemu-server 5/6] start: handle pool limits
Date: Thu, 19 Dec 2024 17:09:28 +0100 [thread overview]
Message-ID: <20241219160928.187737-1-d.kral@proxmox.com> (raw)
In-Reply-To: <20240416122054.733817-19-f.gruenbichler@proxmox.com>
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On 16/04/2024 14:20, Fabian Grünbichler wrote:
> if the start is not part of an incoming migration, check the VM against its
> pool's run limit.
>
> Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
> ---
> PVE/QemuServer.pm | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
> index be937ec1..78b6ff96 100644
> --- a/PVE/QemuServer.pm
> +++ b/PVE/QemuServer.pm
> @@ -5704,6 +5704,19 @@ sub vm_start_nolock {
> # But we do it above, so for now let's be consistent.
> $conf = PVE::QemuConfig->load_config($vmid); # update/reload
> }
> +
> + my $cpu_count = 1;
> + $cpu_count = $conf->{sockets} if $conf->{sockets};
> + $cpu_count *= ($conf->{cores} || 1);
> + $cpu_count = $conf->{vcpus} if $conf->{vcpus} && $conf->{vcpus} < $cpu_count;
> +
> + my $changes = {
> + absolute => 1,
> + running => 1,
> + mem => get_current_memory($conf->{memory}),
Bug: The memory value here should be converted from MiB to bytes, else
the pool limit will not be enforced as `check_guest_pool_limit` expects
the value to be in bytes, i.e. `get_current_memory(...) * 1024 * 1024`.
Spotted it by starting a second VM (which would've raised the memory
usage over the limit) and wondered why it didn't fail. For the third VM
I got:
```
pool limits exhausted: (run) mem: 4096 + 0.001953125 over 3072
```
> + cpu => $cpu_count,
> + };
> + PVE::GuestHelpers::check_guest_pool_limit($vmid, $changes);
> }
>
> # override offline migrated volumes, conf is out of date still
> --
> 2.39.2
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next prev parent reply other threads:[~2024-12-19 16:10 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 12:20 [pve-devel] [PATCH v2 qemu-server/pve-container 0/19] pool resource limits Fabian Grünbichler
2024-04-16 12:20 ` [pve-devel] [PATCH v2 access-control 1/1] pools: define " Fabian Grünbichler
2024-12-19 16:01 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 1/7] config: add pool usage helper Fabian Grünbichler
2024-12-19 16:01 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 2/7] status: add pool usage fields Fabian Grünbichler
2024-12-19 16:02 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 3/7] create/restore/clone: handle pool limits Fabian Grünbichler
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 4/7] start: " Fabian Grünbichler
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 5/7] hotplug: " Fabian Grünbichler
2024-12-19 16:03 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 6/7] rollback: " Fabian Grünbichler
2024-04-16 12:20 ` [pve-devel] [PATCH v2 container 7/7] update: " Fabian Grünbichler
2024-12-19 16:04 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 guest-common 1/1] helpers: add pool limit/usage helpers Fabian Grünbichler
2024-12-19 16:04 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 manager 1/4] api: pools: add limits management Fabian Grünbichler
2024-12-19 16:05 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 manager 2/4] pvestatd: collect and broadcast pool usage Fabian Grünbichler
2024-12-19 16:06 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 manager 3/4] api: return pool usage when queried Fabian Grünbichler
2024-04-16 12:20 ` [pve-devel] [PATCH v2 manager 4/4] ui: add pool limits and usage Fabian Grünbichler
2024-12-19 16:07 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 qemu-server 1/6] config: add pool usage helper Fabian Grünbichler
2024-12-19 16:08 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 qemu-server 2/6] vmstatus: add usage values for pool limits Fabian Grünbichler
2024-12-19 16:08 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 qemu-server 3/6] create/restore/clone: handle " Fabian Grünbichler
2024-04-16 12:20 ` [pve-devel] [PATCH v2 qemu-server 4/6] update/hotplug: " Fabian Grünbichler
2024-12-19 16:09 ` Daniel Kral
2024-04-16 12:20 ` [pve-devel] [PATCH v2 qemu-server 5/6] start: " Fabian Grünbichler
2024-12-19 16:09 ` Daniel Kral [this message]
2024-04-16 12:20 ` [pve-devel] [PATCH v2 qemu-server 6/6] rollback: " Fabian Grünbichler
2024-12-19 15:59 ` [pve-devel] [PATCH v2 qemu-server/pve-container 0/19] pool resource limits Daniel Kral
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