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cwc
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NeddySeagoon
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 Posted: Sat Apr 27, 2024 9:02 pm Post subject: |
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cwc,
I use KVM / QEMU with virt-manager for linux on linux unless it a quick throw away VM, then its VBox.
Windows guests count as quick throwaways :)
In practice, I never throw anything away. so I have to keep getting bigger HDDs every time I get a new PC :)
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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cwc
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| Posted: Sat Apr 27, 2024 9:14 pm Post subject: |
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| NeddySeagoon wrote: | cwc,
I use KVM / QEMU with virt-manager for linux on linux unless it a quick throw away VM, then its VBox.
Windows guests count as quick throwaways 
In practice, I never throw anything away. so I have to keep getting bigger HDDs every time I get a new PC |
thanks for the input Neddy
excellent
"KVM / QEMU with virt-manager"
The following should get me started:
https://wiki.gentoo.org/wiki/QEMU
Enable KVM Support (CONFIG_KVM)
[*] Virtualization --->
<*> Kernel-based Virtual Machine (KVM) support
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NeddySeagoon
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| Posted: Sun Apr 28, 2024 10:02 am Post subject: |
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cwc,
If you want to use virtio devices, both the host and guest kernels need to be able to support virtio.
To run unmodified guests, QEMU will offer the guests some emulated hardware.
virtio is preferred as is does away with the emulated hardware overhead.
I use KVM / QEMU with virt-manager on both arm64 and amd64
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NeddySeagoon
Computer users fall into two groups:-
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cwc
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| Posted: Sun Apr 28, 2024 1:44 pm Post subject: |
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Neddy,
Why a module rather than a kernel build in?
KERNEL Enable KVM support for Intel processors (CONFIG_KVM_INTEL)
[*] Virtualization --->
<M> KVM for Intel processors support
I'm using an intel i7
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NeddySeagoon
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| Posted: Sun Apr 28, 2024 2:12 pm Post subject: |
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cwc,
Nobody told me :)
Has been on my server bare metal for a long time now.
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NeddySeagoon
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cwc
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| Posted: Sun Apr 28, 2024 2:46 pm Post subject: |
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Thanks Neddy
"CONFIG_KVM_INTEL=y"
this is mine
more .config | grep CONFIG_KVM_INTEL
CONFIG_KVM_INTEL=m
I'll update and recompile.
I can not find <*> Mediated device driver framework
Last edited by cwc on Sun Apr 28, 2024 4:50 pm; edited 1 time in total |
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Hu
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cwc
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| Posted: Sun Apr 28, 2024 4:53 pm Post subject: |
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thanks
this is my .config
more .config | grep VFIO_MDEV
CONFIG_VFIO_MDEV=m
yoda /usr/src/linux #
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cwc
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| Posted: Mon Apr 29, 2024 1:48 pm Post subject: kernel notification |
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I instilled QEMU after following the the kernel guide.
https://wiki.gentoo.org/wiki/QEMU
These are the libvirt notifications I recieved:
| Code: |
* Messages for package app-emulation/libvirt-9.8.0-r2:
* CONFIG_BRIDGE_EBT_MARK_T: is not set when it should be.
* CONFIG_BRIDGE_NF_EBTABLES: is not set when it should be.
* CONFIG_NETFILTER_ADVANCED: is not set when it should be.
* CONFIG_NETFILTER_XT_CONNMARK: is not set when it should be.
* CONFIG_NETFILTER_XT_TARGET_CHECKSUM: is not set when it should be.
* CONFIG_IP6_NF_NAT: is not set when it should be.
* CONFIG_BRIDGE_EBT_T_NAT: is not set when it should be.
* CONFIG_NET_ACT_POLICE: is not set when it should be.
* CONFIG_NET_CLS_FW: is not set when it should be.
* CONFIG_NET_CLS_U32: is not set when it should be.
* CONFIG_NET_SCH_HTB: is not set when it should be.
* CONFIG_NET_SCH_INGRESS: is not set when it should be.
* CONFIG_NET_SCH_SFQ: is not set when it should be. |
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Hu
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| Posted: Mon Apr 29, 2024 2:57 pm Post subject: |
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You do not need libvirt to use qemu. I do not have libvirt on the system where I run qemu.
The notifications are telling you about kernel configuration options that are required for certain aspects of the hypervisor to work properly. Depending on what you want to do with the guest, you may or may not need to resolve any or all of these. If you encounter any networking problems with the guest, I would suspect these absences first. If you do not encounter problems, you could choose to ignore these warnings. |
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cwc
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| Posted: Mon Apr 29, 2024 3:05 pm Post subject: |
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| Hu wrote: | You do not need libvirt to use qemu. I do not have libvirt on the system where I run qemu.
. |
equery d libvirt
* These packages depend on libvirt:
app-emulation/libvirt-9.8.0-r2 (policykit ? acct-group/libvirt)
app-emulation/libvirt-glib-4.0.0 (>=app-emulation/libvirt-1.2.
dev-python/libvirt-python-9.8.0 (app-emulation/libvirt:0/9.8.0)
(test ? app-emulation/libvirt:0/9.8.0)
virt-manager pulled libvirt (I think)
| Code: |
emerge virt-manager
The following USE changes are necessary to proceed:
(see "package.use" in the portage(5) man page for more details)
# required by app-emulation/virt-manager-4.1.0-r1::gentoo[-test,gui]
# required by app-emulation/virt-manager (argument)
>=net-misc/spice-gtk-0.42-r3 usbredir
# required by app-emulation/libvirt-9.8.0-r2::gentoo[virt-network]
# required by app-emulation/libvirt-glib-4.0.0::gentoo
# required by app-emulation/virt-manager-4.1.0-r1::gentoo[-test]
# required by app-emulation/virt-manager (argument)
>=net-dns/dnsmasq-2.90 script
# required by app-crypt/swtpm-0.8.1-r2::gentoo
# required by app-emulation/libvirt-9.8.0-r2::gentoo[qemu]
# required by app-emulation/libvirt-glib-4.0.0::gentoo
# required by app-emulation/virt-manager-4.1.0-r1::gentoo[-test]
# required by app-emulation/virt-manager (argument)
>=net-libs/gnutls-3.8.0 pkcs11 tools
I need to look what pulled it. |
thank you!
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cwc
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| Posted: Wed May 01, 2024 6:56 pm Post subject: |
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| Hu wrote: | You do not need libvirt to use qemu. I do not have libvirt on the system where I run qemu.
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Hu,
How to you launch VMS?
I am trying to use a gui? I a little NOOB with command line VMS.
Thanks CWC
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Hu
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| Posted: Wed May 01, 2024 8:37 pm Post subject: |
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| I start qemu from the command line. Usually, I have a helper script that memorizes my standard options for a VM, so I don't need to retype them all every time. |
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cwc
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| Posted: Wed May 01, 2024 10:17 pm Post subject: |
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| Hu wrote: | | I start qemu from the command line. Usually, I have a helper script that memorizes my standard options for a VM, so I don't need to retype them all every time. |
thank you Hu. I'll try to work on that
https://www.qemu.org/docs/master/system/qemu-manpage.html
| Code: |
qemu-
qemu-edid qemu-io qemu-pr-helper qemu-system-arm qemu-system-x86_64
qemu-img qemu-nbd qemu-storage-daemon qemu-system-sparc qemu-x86_64
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Anon-E-moose
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| Posted: Wed May 01, 2024 11:00 pm Post subject: |
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I've always used cmdline qemu, libvirt is probably easier for a newbie.
But anything done in libvirt can be done from the cmd line.
I made a little dialog script, that allows me to choose which vm to start.
| Code: | $DIALOG --title "Qemu Virtual Machines" --clear \
--radiolist "Select?" 45 65 8 \
"0" "Choose ISO" off \
"1" "Choose Linux Distro" off \
"2" "W98se" off \
"3" "XP" off \
"4" "W7" on \
"5" "W8.1" off \
"6" "W11" off 2> $tempfile |
I use taskset to pin certain core/threads for the vm, something libvirt does also.
You learn more about virtual machines using qemu from the cmdlilne, but it's up to you.
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cwc
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| Posted: Fri May 03, 2024 2:24 pm Post subject: |
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I am going to start over from scratch.
I'll use my old kernel .config and start from scratch.
Thank you for all the input.
I've learned a lot!
This is such a wonderful forum . I'm a retired Comp Sci instructor and my gentoo machines are so much fun and challenging at the same time.
Thank again!
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