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3d2f3fb72b
This fixes
commit 38abf9c34d
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Wed Jun 21 13:22:40 2023 +0100
src: set max open file limit to match systemd >= 240 defaults
The bug referenced in that commit had suggested to set
LimitNOFile=512000:1024
on the basis that matches current systemd default behaviour and is
compatible with old systemd. That was good except
* The setting is LimitNOFILE and these are case sensitive
* The hard and soft limits were inverted - soft must come
first and so it would have been ignored even if the
setting name was correct.
* The default hard limit is 524288 not 512000
Reported-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
45 lines
1.4 KiB
SYSTEMD
45 lines
1.4 KiB
SYSTEMD
[Unit]
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Description=Virtualization Cloud-Hypervisor daemon
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Conflicts=libvirtd.service
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Requires=virtchd.socket
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Requires=virtchd-ro.socket
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Requires=virtchd-admin.socket
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Wants=systemd-machined.service
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After=network.target
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After=dbus.service
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After=apparmor.service
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After=remote-fs.target
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After=systemd-machined.service
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Documentation=man:virtchd(8)
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Documentation=https://libvirt.org
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[Service]
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Type=notify
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Environment=VIRTCHD_ARGS="--timeout 120"
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EnvironmentFile=-@initconfdir@/virtchd
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ExecStart=@sbindir@/virtchd $VIRTCHD_ARGS
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ExecReload=/bin/kill -HUP $MAINPID
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KillMode=process
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Restart=on-failure
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# Raise hard limits to match behaviour of systemd >= 240.
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# During startup, daemon will set soft limit to match hard limit
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# per systemd recommendations
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LimitNOFILE=1024:524288
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# The cgroups pids controller can limit the number of tasks started by
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# the daemon, which can limit the number of domains for some hypervisors.
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# A conservative default of 8 tasks per guest results in a TasksMax of
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# 32k to support 4096 guests.
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TasksMax=32768
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# With cgroups v2 there is no devices controller anymore, we have to use
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# eBPF to control access to devices. In order to do that we create a eBPF
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# hash MAP which locks memory. The default map size for 64 devices together
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# with program takes 12k per guest. After rounding up we will get 64M to
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# support 4096 guests.
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LimitMEMLOCK=64M
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[Install]
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WantedBy=multi-user.target
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Also=virtchd.socket
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Also=virtchd-ro.socket
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Also=virtchd-admin.socket
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