Re: [CentOS-virt] CentOS 8 Install as DOMU in PV Environment
AFAIK the support for Xen would not be available in CentOS 8 (Red Hat
has dropped the support).
You can see the differences between the modes here:
https://wiki.xen.org/wiki/Xen_Project_Software_Overview#Guest_Types
PVH seems still to be the fastest one...
You can use the kernel if you add the elrepo kernel repo to the host.
You can find the informations how to do it here:
https://elrepo.org/tiki/kernel-ml
After adding the repo you can install the elrepo kernel like an other
rpm package with "dnf install kernel-ml".
AFAIK this kernel supports all the modes of xen (HVM, PV, PVH etc)
A short howto without details:
1. Start the DomU in HVM mode
2. Install the repo and the kernel-ml pkg
3. Make the kernel-ml as default kernel
4. Reboot the DomU in PVH mode.
The requirement for this is a xen hypervisor install with a grub for xen
what support boot of such a DomU.
The CentOS 8 pkgs from Steven repo ("Xen made easy" project) doesnt have
such a grub bin. I've build it for me here and can share it with you if
you want.
You can of course use CentOS 7 as far as you dont need a newer versions
of the services/applications etc...
A simpler solution is to use Citrix XenServer but not all features are
for free...
---
--
Greetz
Am 27.09.2020 22:23, schrieb 9f9dcad3f78905b03...@bcirpg.com:
Christoph,
I understand this is the better option if HVM is available.. Im not
sure how to make use of this kernel in a non-HVM, PV environment. I'm
a little disturbed by the fact that there isnt PV support in CentOS 8,
I hope it comes later so at least PVH becomes an option.
As for using this kernel in a PV only environment, the only route
would be attempting an in place upgrade and try to install it as part
of the upgrade. I am not willing to spend the time to do this and will
use Centos 7 or other operating systems instead.
Thanks.
___
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Re: [CentOS-virt] CentOS 8 Install as DOMU in PV Environment
the fastest/best mode is still pvh... use the kernel from elrepo it supports the mode --- -- Greetz Am 19.09.2020 19:08, schrieb Radosław Piliszek: Hi, In general, PV tends not to be supported in newer distribution releases. This is mostly due to HVM performance and flexibility nowadays, which just was not the case back in the days when PV ruled. I am curious why you are trying PV. -yoctozepto On Sat, Sep 19, 2020 at 6:41 PM 9f9dcad3f78905b03201--- via CentOS-virt wrote: All, Just wanted to check one last time before letting this thread die. I am curious if anyone has gotten CentOS 8 to work in a PV Xen environment. Thanks. <9f9dcad3f78905b03...@bcirpg.com> wrote: >All, > >I have successfully installed CentOS 7 on a PV environment, and have been trying to see if I can can get a CentOS 8 install running. > >Hardware does not support virtualization extensions, hence the PV environment and I cant do HVM for the install then migrate. > >My understanding is that PV support is in the kernel, and that the distro of Linux shouldn't technically matter. But currently when trying to "PXEBoot" using a CentOS 8 kernel and ram image I get a near instant crash for an invalid kernel. > >I tried to get around the issue by using DOM0 kernel and Ram Disk for the install (DOM0 is Debian 10), having the boot progress until it reaches the following, looping ISCSI error: > >>[ OK ] Reached target Slices. >> Starting Create Static Device Nodes in /dev... >>[ OK ] Started iSCSI UserSpace I/O driver. >>[ OK ] Started Setup Virtual Console. >> Starting dracut cmdline hook... >>[ OK ] Started Apply Kernel Variables. >>[ OK ] Stopped iSCSI UserSpace I/O driver. >> Starting iSCSI UserSpace I/O driver... > >I have also tried the CentOS 7 kernel Ram Disk with the same results. > >I even tried installing CentOS 7 clean, then upgrading in place (by unofficial and unsupported means) and was left with an error that pygrub couldnt find the partition with the kernel. > >Is this is a bug, or is PV just not supported? Or am I doing something wrong? > >Config for the install is below: > >># Kernel paths for install >>#kernel = "/var/opt/xen/ISO_Store/Centos8PXEBoot/vmlinuz" >>kernel = "/vmlinuz" >>#ramdisk = "/var/opt/xen/ISO_Store/Centos8PXEBoot/initrd.img" >>ramdisk = "/initrd.img" >>extra="modules=loop,squashfs console=hvc0" >> >># Path to HDD and iso file >>disk = [ >>#'file:/vmdisk0,xvda,w' >>'format=raw, vdev=xvda, access=w, target=/dev/mapper/vg_1-virtualmachine', >> ] >> >>extra="ksdevice= inst.repo=https://mirror.jaleco.com/centos/8.2.2004/isos/x86_64/ nameserver=1.1.1.1" >> >># Network configuration >>vif = ['bridge=xenbr0'] >> >>#DomU Settings >>memory = 3072 >>name = "centos-8.2" > >Thank you to all. >___ >CentOS-virt mailing list >CentOS-virt@centos.org >https://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] CentOS 8 Install as DOMU in PV Environment
use the kernel from elrepo, it has xen support build in... --- -- Greetz Am 19.09.2020 19:26, schrieb Chris Wik: We tried to get CentOS 8 domU working in PV mode as well but did not have any success and ended up deploying it in HVM mode. The reason OP have was lack of hardware support for HVM. This wasn't our rationale for wanting to run in PV mode. Our rationale was that we prefer to deploy CentOS 7 VMs on LVs which are formatted and deployed from an image on dom0 and don't have any partition table. This makes snapshotting, mounting, backing up and migrating very simple. We have written a number of scripts over the years that needed extensive modification to work with HVM VMs but in the end we ended up doing it because we couldn't get PV mode working. And we accepted that HVM is the future so might as well take the opportunity to adapt our ways. If anyone manages to get PV mode working I'd still like to know. Chris On September 19, 2020 7:08:28 PM GMT+02:00, "Radosław Piliszek" wrote: Hi, In general, PV tends not to be supported in newer distribution releases. This is mostly due to HVM performance and flexibility nowadays, which just was not the case back in the days when PV ruled. I am curious why you are trying PV. -yoctozepto On Sat, Sep 19, 2020 at 6:41 PM 9f9dcad3f78905b03201--- via CentOS-virt wrote: All, Just wanted to check one last time before letting this thread die. I am curious if anyone has gotten CentOS 8 to work in a PV Xen environment. Thanks. <9f9dcad3f78905b03...@bcirpg.com> wrote: All, I have successfully installed CentOS 7 on a PV environment, and have been trying to see if I can can get a CentOS 8 install running. Hardware does not support virtualization extensions, hence the PV environment and I cant do HVM for the install then migrate. My understanding is that PV support is in the kernel, and that the distro of Linux shouldn't technically matter. But currently when trying to "PXEBoot" using a CentOS 8 kernel and ram image I get a near instant crash for an invalid kernel. I tried to get around the issue by using DOM0 kernel and Ram Disk for the install (DOM0 is Debian 10), having the boot progress until it reaches the following, looping ISCSI error: >[ OK ] Reached target Slices. > Starting Create Static Device Nodes in /dev... >[ OK ] Started iSCSI UserSpace I/O driver. >[ OK ] Started Setup Virtual Console. > Starting dracut cmdline hook... >[ OK ] Started Apply Kernel Variables. >[ OK ] Stopped iSCSI UserSpace I/O driver. > Starting iSCSI UserSpace I/O driver... I have also tried the CentOS 7 kernel Ram Disk with the same results. I even tried installing CentOS 7 clean, then upgrading in place (by unofficial and unsupported means) and was left with an error that pygrub couldnt find the partition with the kernel. Is this is a bug, or is PV just not supported? Or am I doing something wrong? Config for the install is below: ># Kernel paths for install >#kernel = "/var/opt/xen/ISO_Store/Centos8PXEBoot/vmlinuz" >kernel = "/vmlinuz" >#ramdisk = "/var/opt/xen/ISO_Store/Centos8PXEBoot/initrd.img" >ramdisk = "/initrd.img" >extra="modules=loop,squashfs console=hvc0" > ># Path to HDD and iso file >disk = [ > #'file:/vmdisk0,xvda,w' > 'format=raw, vdev=xvda, access=w, target=/dev/mapper/vg_1-virtualmachine', > ] > >extra="ksdevice= inst.repo=https://mirror.jaleco.com/centos/8.2.2004/isos/x86_64/ nameserver=1.1.1.1 [1]" > ># Network configuration >vif = ['bridge=xenbr0'] > >#DomU Settings >memory = 3072 >name = "centos-8.2" Thank you to all. - CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt - CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt - CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt -- Chris Wik Anu Internet Services www.cwik.ch [2] | www.anu.net [3] Links: -- [1] http://1.1.1.1 [2] http://www.cwik.ch [3] http://www.anu.net ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen hvm domU and > 3 nic's... bug?
It seems to be a problem with kernel... I use the kernel-ml there (5.5.6)... with kernel from centos-virt repo (4.9.*) it works without this problem... --- -- Greetz Am 27.02.2020 07:50, schrieb Christoph: Hi I cant start a hvm domU with more than 3 nic's configured... why? it is a bug? With previous versions it was possible... here the config - it is an opnsense (openbsd) hvm domU: name = "fenrir.chao5.int" uuid = "7aedcd03-54e8-4055-8d1b-37dd34194859" maxmem = 2048 memory = 2048 loader = '/usr/lib64/xen/boot/hvmloader' type = "hvm" vcpus = 2 rtc_timeoffset = 0 localtime = 1 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" vnc = 1 vncunused = 0 vncdisplay = 100 vnclisten = "0.0.0.0" keymap = "de" vif = [ "mac=00:16:3e:05:30:04,bridge=xenbr5,script=vif-bridge,model=e1000", "mac=00:16:3e:04:30:04,bridge=xenbr4,script=vif-bridge,model=e1000", "mac=00:16:3e:15:30:04,bridge=xenbr15,script=vif-bridge,model=e1000", "mac=00:16:3e:14:30:04,bridge=xenbr14,script=vif-bridge,model=e1000" ] parallel = "none" serial = "none" disk = [ "phy:/dev/vg_lamia/lv_fenrir_root,hda,rw", "phy:/dev/vg_lamia/lv_fenrir_swap,hdb,rw" ] pci_power_mgmt=1 xen_platform_pci=1 pci_msitranslate=1 viridian=0 hpet=1 acpi=1 apic=1 pae=1 pvh=1 with 3 nic's it does work... -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] pvh domU and pvgrub with grub2
Hi it is meanwhile possible to use pvgrub/grub2 inside a pvh domU? -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen hvm domU and > 3 nic's... bug?
Hi I cant start a hvm domU with more than 3 nic's configured... why? it is a bug? With previous versions it was possible... here the config - it is an opnsense (openbsd) hvm domU: name = "fenrir.chao5.int" uuid = "7aedcd03-54e8-4055-8d1b-37dd34194859" maxmem = 2048 memory = 2048 loader = '/usr/lib64/xen/boot/hvmloader' type = "hvm" vcpus = 2 rtc_timeoffset = 0 localtime = 1 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" vnc = 1 vncunused = 0 vncdisplay = 100 vnclisten = "0.0.0.0" keymap = "de" vif = [ "mac=00:16:3e:05:30:04,bridge=xenbr5,script=vif-bridge,model=e1000", "mac=00:16:3e:04:30:04,bridge=xenbr4,script=vif-bridge,model=e1000", "mac=00:16:3e:15:30:04,bridge=xenbr15,script=vif-bridge,model=e1000", "mac=00:16:3e:14:30:04,bridge=xenbr14,script=vif-bridge,model=e1000" ] parallel = "none" serial = "none" disk = [ "phy:/dev/vg_lamia/lv_fenrir_root,hda,rw", "phy:/dev/vg_lamia/lv_fenrir_swap,hdb,rw" ] pci_power_mgmt=1 xen_platform_pci=1 pci_msitranslate=1 viridian=0 hpet=1 acpi=1 apic=1 pae=1 pvh=1 with 3 nic's it does work... -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] pvh domU and pvgrub with grub2
Hi it is meanwhile possible to use pvgrub/grub2 inside a pvh domU? -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen hvm domU and > 3 nic's... bug?
Hi I cant start a hvm domU with more than 3 nic's configured... why? it is a bug? With previous versions it was possible... here the config - it is an opnsense (openbsd) hvm domU: name = "fenrir.chao5.int" uuid = "7aedcd03-54e8-4055-8d1b-37dd34194859" maxmem = 2048 memory = 2048 loader = '/usr/lib64/xen/boot/hvmloader' type = "hvm" vcpus = 2 rtc_timeoffset = 0 localtime = 1 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" vnc = 1 vncunused = 0 vncdisplay = 100 vnclisten = "0.0.0.0" keymap = "de" vif = [ "mac=00:16:3e:05:30:04,bridge=xenbr5,script=vif-bridge,model=e1000", "mac=00:16:3e:04:30:04,bridge=xenbr4,script=vif-bridge,model=e1000", "mac=00:16:3e:15:30:04,bridge=xenbr15,script=vif-bridge,model=e1000", "mac=00:16:3e:14:30:04,bridge=xenbr14,script=vif-bridge,model=e1000" ] parallel = "none" serial = "none" disk = [ "phy:/dev/vg_lamia/lv_fenrir_root,hda,rw", "phy:/dev/vg_lamia/lv_fenrir_swap,hdb,rw" ] pci_power_mgmt=1 xen_platform_pci=1 pci_msitranslate=1 viridian=0 hpet=1 acpi=1 apic=1 pae=1 pvh=1 with 3 nic's it does work... -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Xen Version update policy
It seems to rh/centos has removed the xen code from their kernels... I was able to boot centos8 as domU but only with an elrepo kernel... Look at elrepo kernel I think it should do as dom0 to... --- -- Greetz Am 13.12.2019 13:41, schrieb Steven Haigh: The latest bunch of test packages are available here: http://au1.mirror.crc.id.au/repo/el8/x86_64/ Hopefully, as of a few hours ago, this set should actually install. Currently, networking won't work as they require brctl - which isn't in EL8. I've written patches for this, but they'll probably end up being part of a cleanup of everything in /etc/xen/scripts/ Problem is, they're probably too late for the 4.13.0 release - so I'll have to carry them myself for a while until they hit the git staging area within Xen. I don't have a kernel capable of being a Dom0 as yet - so that's still at a roll your own or obtain elsewhere status. The source for all this is here: https://git.crc.id.au/netwiz/xen413 Yes, I take patches. Steven Haigh 📧 net...@crc.id.au 💻 https://www.crc.id.au ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Xen Version update policy
hi if you need someone to test the centos8 pkgs, Im interested :) --- -- Greetz Am 13.12.2019 01:31, schrieb Steven Haigh: On 2019-12-13 04:54, Kevin Stange wrote: I don't want to burden Steven Haigh any, but I wonder if there's a way we could combine some of our efforts to make both "Xen made easy!" and the Virt SIG Xen easier to manage. I've been thinking about this for a while. The problem has been the workflows between myself and the SIG are so far apart, its hard to look at how to merge them. I have full CI between my own git and packages to the mirrors - which is good, but has its down sides. I also don't have the restrictions of the CentOS build system to deal with - which is great for my workflow ;) I'm prepping packages for CentOS 8 now - but its exposing quite a number of problems around the main toolsets for Xen - and instead of just adding my own patch and moving on (ala Fedora's Xen packages), I'm trying to get fixes in upstream where possible. My todo list currently includes: 1) Replace all #! that include env python to a specific python version/binary. ie /usr/bin/python or /usr/bin/python3. The configure portions of this are complete, but the scripts need to be altered to have the detected python version populated. 2) There's no brctl in CentOS 8. The network scripts need to be re-written to use 'ip' instead. To maintain compatibility, the network scripts need to support both brctl and ip commands and use whichever is present on the system. 3) UEFI support needs to be tested. The preferred UEFI boot method for Dom0 is to use grub to then boot Xen - but this needs to be tested. So while me moving to try and get these fixed upstream is great - it should make everyone's job easier in the long term. Although I have the same problem as the SIG - there's just not enough people to test / patch stuff. The more we deep dive into 4.13, the further away I can see the release happening :( ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen 4.11
Hi is there a reason why xen 4.11 isnt released for centos7 (I cant find it on http://mirror.centos.org/centos/7/virt/)? -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen and libvirt
Hi Does someone know how it is possible these parameters: e820_host max_grant_frames to set with libvirt xml config? I use them with xl config but I want to change to libvirt config/tools. (with libvirt 4.10 it is possible to start pvh domains) -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Wich tuned profile for Dom0 and DomU
Hi wich tuned profile are the best for dom0 and domU? There are virt-host and virt-guest profiles for kvm, should I use them? If yes, should I use in domU ever virt-guest or is for example network-throughput profile better for a nfs/samba fs server inside domU better? -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] how to update ucode with xen
it is working thx a lot... but it has included the GenuineIntel.bin only in actually used kernel... do I need to reinstall microcode_ctl every time I update the kernel? And second question, I quess I still need the ucode = scan as xen parameter right? Am 2018-09-19 20:08, schrieb Kevin Stange: On 9/19/18 1:55 AM, Christoph wrote: Hi can someone say me how to update the µcode of the cpu with xen? I have added the ucode=scan parameter to xen but it does not seem to work... the µcode version of my xeon is really old :/ model name : Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz microcode : 0x10 There is a "caveat" in the current version of microcode_ctl which means it doesn't automatically install the microcode into the initramfs if the kernel isn't "known good" because of various issues with Linux kernel patches being needed for certain microcode features. There is a quick way to get it to force the microcode into the initramfs of any kernel: mkdir -p /etc/microcode_ctl/ucode_with_caveats/ touch /etc/microcode_ctl/ucode_with_caveats/force This only works with the most recent version of microcode_ctl (2.1-29.16.el7_5.x86_64). If you do this, you can then run 'yum reinstall microcode_ctl' and you should get the microcode in the initramfs after it finishes. Note that this will cause it to trust ALL kernels and all microcode versions which might not always be a good thing. See this file for info: /usr/share/doc/microcode_ctl/README.caveats You can test that the initramfs has the microcode by running cpio: cpio -t < /boot/initramfs-4.9.112-32.el7.x86_64.img If there is a GenuineIntel.bin you should be good. If you get spammed with errors, then it isn't included. -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] how to update ucode with xen
Can you write a howto for this? Am 2018-09-19 19:50, schrieb Sarah Newman: On 09/18/2018 11:55 PM, Christoph wrote: Hi can someone say me how to update the µcode of the cpu with xen? I have added the ucode=scan parameter to xen but it does not seem to work... the µcode version of my xeon is really old :/ model name : Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz microcode : 0x10 We use ucode=-1 and provide it as a module for grub. -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] how to update ucode with xen
Hi can someone say me how to update the µcode of the cpu with xen? I have added the ucode=scan parameter to xen but it does not seem to work... the µcode version of my xeon is really old :/ model name : Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz microcode : 0x10 -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] optimal windows xml config for xen
Hi I use this config to start win7 64bit via virsh: marax 6df7f16c-50e1-4541-b5b1-a91ff675a7c2 2097152 2097152 8 hvm /usr/lib64/xen/boot/hvmloader destroy restart restart it is optimal for win7? does someone see any options what I could make better? -- -- Greetz Christoph ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] grub2 for pv
Hi could you add pv grub2 images to the packages? I've tried it following this howto: https://blog.xenproject.org/2015/01/07/using-grub-2-as-a-bootloader-for-xen-pv-guests/ and it works really good... It would be nice to have it in the rpm packages. -- -- Greetz Christoph ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen 4.7 or 4.8
Hi are there somewhere pkgs with xen 4.7 or 4.8 for centos7? -- -- Greetz Christoph ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Problem with convert config file to xml
Hi all, I have a problem to convert a hvm config file to xml: virsh -c xen:/// domxml-from-native xen-xm /etc/xen/marax.cfg > /etc/xen/marax_xml.cfg error: internal error: config value kernel was missing cat /etc/xen/marax.cfg builder = 'hvm' memory = 2048 vcpus=8 boot="c" name= "marax" disk= [ 'phy:/dev/vg_lilith/lv_marax_c,hda,w', 'phy:/dev/vg_lilith/lv_marax_d,hdb,w' ] vif = [ 'bridge=xenbr5,mac=00:16:3e:05:01:10,script=vif-bridge,model=e1000' ] on_poweroff = 'destroy' on_reboot = 'restart' on_crash= 'restart' vnc=0 vga = 'stdvga' spice = 1 spicehost = '0.0.0.0' spiceport = 6000 spicedisable_ticketing=1 spicevdagent=1 spice_clipboard_sharing=1 spiceusbredirection=4 localtime=1 keymap='de' viridian = 1 whats the problem there? I can start the domU with xl without problems... -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and spice problem
Hi till now it are the rpm's with spice support working without problems (spice works to :) ) there is one issue what I have found, after install does grub2-mkconfig make this entry: multiboot /boot/xen-4.6.0-rc-2.el7.gz placeholder... but I think it should be: multiboot /boot/xen.gz placeholder ... with the first one it doesnt boot here, grub cant find it allthough its there in fs... -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] [ovirt-users] CEPH rbd support in EL7 libvirt
hi is ovirt useable with xen? is there any doc/howto how to use it? Am 2015-10-12 15:04, schrieb Sven Kieske: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 12/10/15 10:13, Nux! wrote: Hi Nir, I have not tried to use Ovirt with Ceph, my question was about libvirt and was directed to ask the question here, sorry for the noise; I understand libvirt is not really ovirt's people concern. The thing is qemu can do ceph rbd in EL7, libvirt does not, although support seems to be there and a simple rebuild enables it. Was hoping you guys know more. Lucian I'd suggest to ask this on the virt-sig of centOS (cc'ed). Why is there no rbd support in el7 libvirt? I don't know, maybe the virt repo guys from centos can rebuild it (they already do rebuild libvirt afaik, another flag might not hurt them ). HTH - -- Mit freundlichen Grüßen / Regards Sven Kieske -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and spice problem
Am 2015-10-05 12:39, schrieb George Dunlap: On Mon, Oct 5, 2015 at 10:08 AM, Christoph wrote: Historically, because it wasn't available. Now, simply because it's off by default and before now nobody had asked for it to be enabled. The Virt SIG is a community effort -- adding a configure option and rebuilding is no problem, but the Virt SIG will need help testing / working out bugs in this feature if it's going to be available going forward. If you're up for helping test it / work out any bugs, I can rebuild it with the above arguments today. -George oh sure, if should find any bugs I would report it here -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and spice problem
Am 2015-10-04 17:50, schrieb Mark Pryor:
http://107.185.144.55/xen/cent7/dom0/RPMS/stable-4.6/mock/ [1]
above is a build of upstream xen with this `configure` including spice
support:
./configure --enable-systemd --prefix=/usr --enable-xsmpolicy
--enable-ocamltools \
--libdir=%{_libdir} --enable-efi \
--with-extra-qemuu-configure-args="--enable-spice --enable-usb-redir"
there is no associated libvirt build
Included are patches up to the HEAD of staging-4.6, so its basically
rc5.
--
PryMar56
why is the spice support not in the 'offical' xen centos7 repo built in?
--
-
Greetz
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Re: [CentOS-virt] xen and spice problem
there is an qemu 2.0 ver in EPEL (qemu-2.0.0-1.el7.5 RPM for x86_64) there is the spice support build in... hmm cant install it: Transaction check error: file /usr/share/locale/de_DE/LC_MESSAGES/qemu.mo from install of qemu-common-2:2.0.0-1.el7.5.x86_64 conflicts with file from package xen-runtime-4.6rc3-4.el7.x86_64 file /usr/share/locale/fr_FR/LC_MESSAGES/qemu.mo from install of qemu-common-2:2.0.0-1.el7.5.x86_64 conflicts with file from package xen-runtime-4.6rc3-4.el7.x86_64 file /usr/share/locale/hu/LC_MESSAGES/qemu.mo from install of qemu-common-2:2.0.0-1.el7.5.x86_64 conflicts with file from package xen-runtime-4.6rc3-4.el7.x86_64 file /usr/share/locale/it/LC_MESSAGES/qemu.mo from install of qemu-common-2:2.0.0-1.el7.5.x86_64 conflicts with file from package xen-runtime-4.6rc3-4.el7.x86_64 file /usr/share/locale/tr/LC_MESSAGES/qemu.mo from install of qemu-common-2:2.0.0-1.el7.5.x86_64 conflicts with file from package xen-runtime-4.6rc3-4.el7.x86_64 is there anywhere an xen qemu with enabled spice support for centos7? -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and spice problem
Am 2015-10-01 13:30, schrieb George Dunlap: No, the qemu version will be one that is custom build for the xen package. Fabio, is there a toplevel config option to enable spice when building through the Xen build system? Please manually CC me if you can, as I'm not getting your mails to centos-devel... there is an qemu 2.0 ver in EPEL (qemu-2.0.0-1.el7.5 RPM for x86_64) there is the spice support build in... -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and spice problem
Am 2015-10-01 12:33, schrieb Fabio Fantoni: Should be something like /var/log/xen/qemu-dm-marax.log oh ok: qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,password=test,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,password=test,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu: terminating on signal 1 from pid 25375 qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. qemu-system-i386: -spice port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on: There is no option group 'spice' spice is not supported by this qemu build. seems to be not build in into the pkgs... I use this one: qemu-img-1.5.3-86.el7_1.6.x86_64 Is there one which have spice support build in? -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and spice problem
Am 2015-10-01 12:24, schrieb Fabio Fantoni: Qemu seems crashed, can you post qemu log of this domU for see the exact problem? Also domU's xl cfg can be useful and/or backtrace of qemu crash with gdb depending on the error of qemu crash. thats the config of domU: builder = 'hvm' memory = 2048 vcpus=8 boot="c" name= "marax" disk= [ 'phy:/dev/vg_lilith/lv_marax_c,hda,w' ] vif = [ 'bridge=xenbr5,mac=00:16:3e:05:01:10,script=vif-bridge' ] on_poweroff = 'destroy' on_reboot = 'restart' on_crash= 'restart' vnc=0 vga = 'stdvga' spice = 1 spicehost = '0.0.0.0' spiceport = 6000 spicedisable_ticketing=1 spicevdagent=1 spice_clipboard_sharing=1 localtime=1 keymap='de' viridian = 1 where/how I can see the qemu log? -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen and spice problem
Hi it is possible to use xen and spice already? If yes is there any howto or doc how? If I turn on spice in cfg of a hvm domU, I get this error: Parsing config from /etc/xen/marax.cfg libxl: detail: libxl_dom.c:238:hvm_set_viridian_features: base group enabled libxl: detail: libxl_dom.c:238:hvm_set_viridian_features: freq group enabled libxl: detail: libxl_dom.c:238:hvm_set_viridian_features: time_ref_count group enabled xc: detail: elf_parse_binary: phdr: paddr=0x10 memsz=0xbad04 xc: detail: elf_parse_binary: memory: 0x10 -> 0x1bad04 xc: detail: VIRTUAL MEMORY ARRANGEMENT: xc: detail: Loader: 0010->001bad04 xc: detail: Modules: -> xc: detail: TOTAL:->7f00 xc: detail: ENTRY:00100610 xc: detail: PHYSICAL MEMORY ALLOCATION: xc: detail: 4KB PAGES: 0x0200 xc: detail: 2MB PAGES: 0x03f7 xc: detail: 1GB PAGES: 0x xc: detail: elf_load_binary: phdr 0 at 0x7fab7190a000 -> 0x7fab719bb151 domainbuilder: detail: xc_dom_gnttab_hvm_seed: called, pfn=0xff000 libxl: error: libxl_dm.c:1849:device_model_spawn_outcome: domain 29 device model: spawn failed (rc=-3) libxl: error: libxl_create.c:1340:domcreate_devmodel_started: device model did not start: -3 libxl: error: libxl_dm.c:1959:kill_device_model: Device Model already exited libxl: error: libxl.c:1580:libxl__destroy_domid: non-existant domain 29 libxl: error: libxl.c:1538:domain_destroy_callback: unable to destroy guest with domid 29 libxl: error: libxl.c:1465:domain_destroy_cb: destruction of domain 29 failed (xen-4.6rc3-4.el7.x86_64) -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and centos7
Thanks for the report. Was that because you had the path to the pvgrub image in your config file? right... is there an other better way to use it? If so, it might be a good idea to add a symbolic link from /usr/lib to /usr/lib64 for pvgrub. oh, IMHO it make sense to place it inside lib64 -George -- - Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and centos7
Am 2015-09-25 17:25, schrieb George Dunlap: The code is from the XenProject, which is developed by a number of different companies, not just Citrix. The XenProject has greatly expanded our automated testing over the last few years; additionally, a number of different companies have their own automated test suites (Oracle, XenServer), and test the development branches regularly. The bugs we've found since RC1 have been almost entirely in niche cases -- enabling this feature broke that bit of hardware; switching this caused that obscure configuration not to work quite right; adding this build option breaks things with that particular compiler. All that to say, RC3 is pretty close to what the final release will be. The main thing that needs testing is actually the packaging effort -- is it easy to install? Does it upgrade properly? &c. And the main thing holding up the official C7 release (for either of them) is just testing. The more people install, test it, and say "this works for me" (or report bugs when it doesnt' work), the sooner the release will come. :-) -George it works for me since 2 days without issues... only one thing what I needed to change was the path of pvgrub :) (from /usr/lib... to /usr/lib64...) -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] xen and centos7
Am 2015-09-25 09:53, schrieb Pasi Kärkkäinen: Yeah the testing rpms for centos7/xen are in virt7-xen-44-testing repository (and virt7-xen-46-testing aswell). oh cool... how stable is it? I know the meanig of testing :) but it is stable enough to use it at home? Are there any known bugs/problems? If I want to start to use it, could I take already xen-46 or it is to unstable in comparison to xen-44? -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] xen and centos7
Hi is there already a release of xen for centos7? If not it is on roadmap? If yes when could it be done? -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] poor performance with dom0 on centos7
Am 2015-09-17 09:29, schrieb Pasi Kärkkäinen: Are you using nfs over UDP or TCP ? TCP, but Network cant be the bottleneck, have tested it with iperf between bare metal/domU's and the nfs domU and it was perfectly fast... I don't think. If you used NFS over UDP, try running it over TCP. no I use it over TCP... What does 'top' and/or 'iostat -x 1' say during the 'benchmark' ? top: top - 09:01:12 up 22:45, 1 user, load average: 1,97, 2,01, 1,99 Tasks: 210 total, 1 running, 209 sleeping, 0 stopped, 0 zombie %Cpu0 : 0,3 us, 1,0 sy, 0,0 ni, 91,4 id, 7,3 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu1 : 0,0 us, 0,0 sy, 0,0 ni,100,0 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu2 : 0,0 us, 0,0 sy, 0,0 ni,100,0 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu3 : 0,0 us, 0,3 sy, 0,0 ni, 13,0 id, 86,7 wa, 0,0 hi, 0,0 si, 0,0 st KiB Mem : 1013016 total,19548 free, 591456 used, 402012 buff/cache KiB Swap: 1048572 total, 990776 free,57796 used. 353468 avail Mem iostat: avg-cpu: %user %nice %system %iowait %steal %idle 0,000,000,00 50,000,00 50,00 Device: rrqm/s wrqm/s r/s w/srkB/swkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util xvda 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdb 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdc 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdd 0,00 0,000,00 26,00 0,00 2336,00 179,6969,31 1060,620,00 1060,62 38,46 100,00 xvde 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdf 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdg 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdh 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdi 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 xvdj 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 dm-0 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 dm-1 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 dm-2 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 dm-3 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 dm-4 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 dm-5 0,00 0,000,000,00 0,00 0,00 0,0069,310,000,000,00 0,00 100,00 dm-6 0,00 0,000,000,00 0,00 0,00 0,00 0,000,000,000,00 0,00 0,00 so not really a problem... -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] poor performance with dom0 on centos7
Hi Im now pretty sure the problem is the DomU with NFS Server. If I write on a NFS share from other Host (bare metal or other vm) then I see on my NFS server nearly the whole time 100% io at [jbd2/dm-5-8] process... If I write on a SMB share (same partition as nfs share) from other Host then it is a little bit better but still ever and ever again 100% io load If I write a 1GB file on the same partition (with nfs/samba share) with dd, I dont see the high io load... Is there a known problem with nfs/smb shares and/or dm in xen domU's on centos 7 as dom0? With centos 6 as dom0 I didnt had the problem... (the partition with the shares is a raid5 software partition, soft raid is build in dom0 and as a xvd device passed through to the domU with the shares) could selinux be the problem? I have it in permissive mode on all hosts here (dom0 and domU) not disabled... Any hints for me? Am 2015-09-01 06:47, schrieb Christoph: Hi All it is possible to tune dom0/domU for better IO/network performance? Since I have changed to Cenots7 dom0, I have a really poor IO performance inside a PV VM. I have already done what is described on http://wiki.xenproject.org/wiki/Tuning_Xen_for_Performance It is better now but still significantly worse than with centos6 dom0 my settings: xen parameter: dom0_mem=1024M cpufreq=xen dom0_max_vcpus=2 dom0_vcpus_pin xl sched-credit Cpupool Pool-0: tslice=30ms ratelimit=1000us NameID Weight Cap Domain-0 0 10240 samael 12560 satan25120 amon 32560 leviathan45120 echo 1048576 > /proc/sys/net/ipv4/tcp_limit_output_bytes on dom0 the both domU's satan and leviathan are very IO performance oriented (NFS server and downloading vm) Is there something more what I can do or try? could it be a selinux issue? I have it in permissive mode there, not disabled. But permissive means only to collect the info not enforcing the rules... (I use the xen45 pkgs) -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] poor performance with dom0 on centos7
Hi All it is possible to tune dom0/domU for better IO/network performance? Since I have changed to Cenots7 dom0, I have a really poor IO performance inside a PV VM. I have already done what is described on http://wiki.xenproject.org/wiki/Tuning_Xen_for_Performance It is better now but still significantly worse than with centos6 dom0 my settings: xen parameter: dom0_mem=1024M cpufreq=xen dom0_max_vcpus=2 dom0_vcpus_pin xl sched-credit Cpupool Pool-0: tslice=30ms ratelimit=1000us NameID Weight Cap Domain-0 0 10240 samael 12560 satan25120 amon 32560 leviathan45120 echo 1048576 > /proc/sys/net/ipv4/tcp_limit_output_bytes on dom0 the both domU's satan and leviathan are very IO performance oriented (NFS server and downloading vm) Is there something more what I can do or try? could it be a selinux issue? I have it in permissive mode there, not disabled. But permissive means only to collect the info not enforcing the rules... (I use the xen45 pkgs) -- -- Greetz ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
