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Red Hat Enterprise Linux 5 5.3 Release Notes - Red Hat Customer ...

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30 Inhaltsverzeichnis<br />

Migrating paravirtualized guests through xm migrate [domain] [dom0 IP address] does not<br />

work.<br />

When installing <strong>Red</strong> <strong>Hat</strong> <strong>Enterprise</strong> <strong>Linux</strong> 5 on a fully virtualized SMP guest, the installation may<br />

freeze. This can occur when the host (dom0) is running <strong>Red</strong> <strong>Hat</strong> <strong>Enterprise</strong> <strong>Linux</strong> 5.2.<br />

Stellen Sie den Gast so ein, dass er nur einen Prozessor während der Installation verwendet. Dies<br />

können Sie mit der Option --vcpus=1 in virt-install tun. Sobald die Installation abgeschlossen<br />

ist, können Sie den Gast auf SMP setzen, indem Sie die zugewiesenen vcpus in virt-manager<br />

anpassen.<br />

6.3.3. x86_64 Architectures<br />

Migrating paravirtualized guests through xm migrate [domain] [dom0 IP address] does not<br />

work.<br />

Installing the Virtualization feature may cause a time went backwards warning on HP systems<br />

with model numbers xw9300 and xw9400.<br />

Um dieses Problem auf xw9400-Maschinen zu umgehen, aktivieren Sie in den BIOS-Einstellungen<br />

den HPET-Timer. Beachten Sie, dass diese Option für xw9300-Maschinen nicht zur Verfügung steht.<br />

Installing <strong>Red</strong> <strong>Hat</strong> <strong>Enterprise</strong> <strong>Linux</strong> 3.9 on a fully virtualized guest may be extremely slow. In addition,<br />

booting up the guest after installation may result in hda: lost interrupt errors.<br />

Um diesen Bootup-Fehler zu vermeiden, konfigurieren Sie den Gast so, dass er den SMP-Kernel<br />

verwendet.<br />

Upgrading a host (dom0) system to <strong>Red</strong> <strong>Hat</strong> <strong>Enterprise</strong> <strong>Linux</strong> 5.2 may render existing <strong>Red</strong> <strong>Hat</strong><br />

<strong>Enterprise</strong> <strong>Linux</strong> 4.5 SMP paravirtualized guests unbootable. This is more likely to occur when the<br />

host system has more than 4GB of RAM.<br />

Booten Sie als provisorische Lösung jeden <strong>Red</strong> <strong>Hat</strong> <strong>Enterprise</strong> <strong>Linux</strong> 4.5 Gast in Single-CPU-Modus<br />

und aktualisieren dessen Kernel auf die aktuellste Version (für <strong>Red</strong> <strong>Hat</strong> <strong>Enterprise</strong> <strong>Linux</strong> 4.5.z).<br />

6.3.4 . ia64 Architecture<br />

Migrating paravirtualized guests through xm migrate [domain] [dom0 IP address] does not<br />

work.<br />

On some Itanium systems configured for console output to VGA, the dom0 virtualized kernel may fail<br />

to boot. This is because the virtualized kernel failed to properly detect the default console device<br />

from the Extensible Firmware Interface (EFI) settings.<br />

Falls dies auftritt, können Sie, um dies zu umgehen, den Boot-Parameter console=tty zu den<br />

Kernel-Boot-Optionen in /boot/efi/elilo.conf hinzufügen.<br />

On some Itanium systems (such as the Hitachi Cold Fusion 3e), the serial port cannot be detected in<br />

dom0 when VGA is enabled by the EFI Maintenance Manager. As such, you need to supply the<br />

following serial port information to the dom0 kernel:<br />

Geschwindigkeit in Bits/Sekunde<br />

Anzahl der Daten-Bits<br />

Parität<br />

io_base-Adresse<br />

Diese Details müssen in der Zeile append= des dom0-Kernels in /boot/efi/elilo.conf<br />

angegeben werden. Zum Beispiel:<br />

append="com1=19200,8n1,0x3f8 -- quiet rhgb console=tty0<br />

console=ttyS0,19200n8"<br />

In diesem Beispiel ist com1 der serielle Port, 19200 die Geschwindigkeit (in Bits/Sekunde), 8n1 gibt<br />

die Einstellungen bezüglich der Anzahl der Daten-Bits/Parität an und 0x3f8 ist die io_base-<br />

Adresse.<br />

Virtualization does not work on some architectures that use Non-Uniform Memory Access (NUMA).<br />

As such, installing the virtualized kernel on systems that use NUMA will result in a boot failure.

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