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1608 discussions

Centos 7 Xen Release!
by George Dunlap 10 Feb '16

10 Feb '16

I am pleased to announce the official release of Virt SIG Xen packages for CentOS 7. To install: * Install centos-release-xen from centos-extras yum install centos-release-xen * Update to get the new kernel: yum update * Install the Xen packages from the centos-virt-xen repo: yum install xen There are also packages for libvirt 1.3.0 (which should be compatible with openstack) and virt-manager. Please report any bugs you find in the packaging here. -George

2 2

CentOS 6 Virt SIG Xen 4.6 packages available in centos-virt-xen-testing
by George Dunlap 10 Feb '16

10 Feb '16

As mentioned yesterday, Xen 4.6 packages are now available for testing. These also include an update to libvirt 1.3.0, in line with what's available for CentOS 7. Please test, particularly the upgrade if you can, and report any problems here. To upgrade: yum update --enablerepo=centos-virt-xen-testing To install from scratch: * Install centos-release-xen from centos-extras yum install centos-release-xen * Update to get the new kernel: yum update * Install the Xen packages from the centos-virt-xen-testing repo: yum install --enablerepo=centos-virt-xen-testing xen Keep in mind that there is still a bug in the upstream CentOS new-kernel script which for some people consistently fails to add an "initird" line to the Xen boot stanza. Check /boot/grub/grub.conf; the Xen stanza should look something like this: title CentOS (3.18.21-17.el6.x86_64) root (hd0,0) kernel /xen.gz dom0_mem=1024M,max:1024M cpuinfo com1=115200,8n1 console=com1,tty loglvl=all guest_loglvl=all module /vmlinuz-3.18.21-17.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet module /initramfs-3.18.21-17.el6.x86_64.img -George

5 9

LXC on CentOS 7 HowTo: PAM Configuration
by Jochen Wiedmann 09 Feb '16

09 Feb '16

Hi, I am trying to implement something like an "LXC on CentOS 7 HowTo" for internal use. (Might as well get public afterwards.) I am following the HowTo for CentOS 6 (https://wiki.centos.org/HowTos/LXC-on-CentOS6). So, here's what I did so far (Steps 1-6 can easily be omitted, but I am trying to be complete.) 1.) Disable delta RPM's in /etc/yum.conf 2.) Remove LibreOffice sudo yum remove "libreoffice*" 3.) System update sudo yum -y update 4.) Install some niceties sudo yum -y install emacs emacs-nox "@Development Tools" git subversion 5.) Reboot 6.) Install VirtualBox Guest Additions 7.) Install libvirt sudo yum -y install libvirt libvirt-client libvirt-install 8.) Setting up root fs for a container: sudo su - mkdir -p /var/lib/libvirt/lxc/centos01/etc/yum.repos.d cat cat /etc/yum.repos.d/CentOS-Base.repo | sed s/'$releasever'/7/g >/var/lib/libvirt/lxc/centos01/etc/yum.repos.d/CentOS-Base.repo yum groupinstall core --installroot=/var/lib/libvirt/lxc/centos01 # The following command seems to be redundant, as both packages are already installed as part of the core group. yum -y install plymouth libselinux-python --installroot=/var/lib/libvirt/lxc/centos01 Now, according to the old howto, I am to configure PAM in the new root fs. Reading through that; I don't really understand what I am to do. For example, I am to replace a line with "session required pam_selinux.so close". However, the matching line is a comment line, which makes me unsure. Are those PAM configurations still required? If so, could someone help me on what to do exactly? Thanks, Jochen -- The next time you hear: "Don't reinvent the wheel!" http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-o…

3 2

KVM
by Gokan Atmaca 08 Feb '16

08 Feb '16

Hello I use KVM. In a virtual machine "jbd2 dm-0" disk I / O is very increases. It consumes up to 99%. For this reason, slowing down the other virtual machine. What should I do to solve the problem. ? Thanks..

7 12

Mouse and display issues with Windows 10 guest
by Robert Nichols 07 Feb '16

07 Feb '16

Anyone managed to get a Windows 10 guest running well under qemu/kvm? I can get it up and running, but there is a major issue with losing use of the mouse, plus my display resolution is stuck at 1024x768. The mouse will work for a short time (a few seconds to a few minutes), but then stops responding. That's with the mouse coming in as the recommended QEMU tablet device. I can assign a USB mouse to the guest as a USB host device, but it also stops responding after a short time. At least with the USB mouse I can remove it from the guest and then reassign it again. That gives me use of the mouse, but again only for a short time. Trying run Windows 10 from just a keyboard is an exercise in frustration. I can't get Windows 10 to believe that any screen resolution besides 1024x768 is available. That's the case both with VNC/vga and Spice/qxl. This is in contrast with Windows 7, which offers a good selection of resolutions with VNC/vga. Any suggestions or success reports would be appreciated. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.

3 5

Where is QXL driver for Windows?
by C. L. Martinez 04 Feb '16

04 Feb '16

Hi all, Where can I found QXL driver for Windows 2012 R2/Windows 8.1? I don't see inside latest/stable iso images from fedoraproject ... Thanks. -- Greetings, C. L. Martinez

2 3

c7 xen-4.6 crash.
by Alvin Starr 04 Feb '16

04 Feb '16

Installing xen on a fairly clean c7.2 system. I get a xen kernel panic. (XEN) Bad console= option 'tty' Xen 4.6.0-9.el7 (XEN) Xen version 4.6.0-9.el7 (mockbuild(a)centos.org) (gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-4)) debug=n Wed Jan 20 12:25:53 UTC 2016 (XEN) Latest ChangeSet: Thu Jan 14 15:35:35 2016 +0000 git:6e8597a-dirty (XEN) Bootloader: GRUB 2.02~beta2 (XEN) Command line: placeholder dom0_mem=1024M,max:1024M cpuinfo com1=115200,8n1 console=com1,tty loglvl=all guest_loglvl=all (XEN) Video information: (XEN) VGA is text mode 80x25, font 8x16 (XEN) VBE/DDC methods: V2; EDID transfer time: 2 seconds (XEN) Disc information: (XEN) Found 1 MBR signatures (XEN) Found 1 EDD information structures (XEN) Xen-e820 RAM map: (XEN) 0000000000000000 - 000000000009ac00 (usable) (XEN) 000000000009ac00 - 00000000000a0000 (reserved) (XEN) 00000000000e0000 - 0000000000100000 (reserved) (XEN) 0000000000100000 - 00000000bffc7280 (usable) (XEN) 00000000bffc7280 - 00000000bffceac0 (ACPI data) (XEN) 00000000bffceac0 - 00000000c0000000 (reserved) (XEN) 00000000e0000000 - 00000000f0000000 (reserved) (XEN) 00000000fec00000 - 0000000100000000 (reserved) (XEN) 0000000100000000 - 0000000840000000 (usable) (XEN) ACPI: RSDP 000FDFD0, 0024 (r2 IBM ) (XEN) ACPI: XSDT BFFCE980, 0054 (r1 IBM SERVALNT 1000 IBM 45444F43) (XEN) ACPI: FACP BFFCE8C0, 0084 (r2 IBM SERVALNT 1000 IBM 45444F43) (XEN) ACPI: DSDT BFFC7280, 2F12 (r2 IBM SERVALNT 1000 INTL 20041203) (XEN) ACPI: FACS BFFCA7C0, 0040 (XEN) ACPI: APIC BFFCE800, 0084 (r1 IBM SERVALNT 1000 IBM 45444F43) (XEN) ACPI: SRAT BFFCE6C0, 00E8 (r1 IBM SERVALNT 1000 IBM 45444F43) (XEN) ACPI: HPET BFFCE680, 0038 (r1 IBM SERVALNT 1000 IBM 45444F43) (XEN) ACPI: MCFG BFFCE640, 003C (r1 IBM SERVALNT 1000 IBM 45444F43) (XEN) ACPI: ERST BFFCA800, 0230 (r1 IBM SERVALNT 1000 IBM 45444F43) (XEN) System RAM: 32767MB (33553796kB) (XEN) SRAT: PXM 0 -> APIC 0 -> Node 0 (XEN) SRAT: PXM 0 -> APIC 1 -> Node 0 (XEN) SRAT: PXM 0 -> APIC 6 -> Node 0 (XEN) SRAT: PXM 0 -> APIC 7 -> Node 0 (XEN) SRAT: Node 0 PXM 0 0-c0000000 (XEN) SRAT: Node 0 PXM 0 100000000-840000000 (XEN) SRAT: Node 0 PXM 0 840000000-841000000 (hotplug) (XEN) NUMA: Using 18 for the hash shift. (XEN) Domain heap initialised (XEN) found SMP MP-table at 0009ad40 (XEN) DMI 2.4 present. (XEN) Using APIC driver default (XEN) ACPI: PM-Timer IO Port: 0x588 (XEN) ACPI: SLEEP INFO: pm1x_cnt[1:584,1:0], pm1x_evt[1:580,1:0] (XEN) ACPI: wakeup_vec[bffca7cc], vec_size[20] (XEN) ACPI: Local APIC address 0xfee00000 (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) (XEN) Processor #0 6:15 APIC version 20 (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) (XEN) Processor #1 6:15 APIC version 20 (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled) (XEN) Processor #6 6:15 APIC version 20 (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x07] enabled) (XEN) Processor #7 6:15 APIC version 20 (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1]) (XEN) ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1]) (XEN) ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1]) (XEN) ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1]) (XEN) ACPI: IOAPIC (id[0x0e] address[0xfec00000] gsi_base[0]) (XEN) IOAPIC[0]: apic_id 14, version 32, address 0xfec00000, GSI 0-23 (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) (XEN) ACPI: IRQ0 used by override. (XEN) ACPI: IRQ2 used by override. (XEN) ACPI: IRQ9 used by override. (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs (XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000 (XEN) Invalid bit width in GAR (XEN) Using ACPI (MADT) for SMP configuration information (XEN) SMP: Allowing 4 CPUs (0 hotplug CPUs) (XEN) IRQ limits: 24 GSI, 760 MSI/MSI-X (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K (XEN) CPU: L2 cache: 4096K (XEN) CPU: Physical Processor ID: 0 (XEN) CPU: Processor Core ID: 0 (XEN) CMCI: CPU0 has no CMCI support (XEN) CPU0: Thermal monitoring enabled (TM2) (XEN) Intel machine check reporting enabled (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN) Initializing CPU#0 (XEN) Detected 2992.543 MHz processor. (XEN) Initing memory sharing. (XEN) alt table ffff82d0802b8c50 -> ffff82d0802b9ff4 (XEN) PCI: MCFG configuration 0: base e0000000 segment 0000 buses 00 - 25 (XEN) PCI: MCFG area at e0000000 reserved in E820 (XEN) PCI: Using MCFG for segment 0000 bus 00-25 (XEN) I/O virtualisation disabled (XEN) CPU0: Intel(R) Xeon(R) CPU 5160 @ 3.00GHz stepping 06 (XEN) ENABLING IO-APIC IRQs (XEN) -> Using new ACK method (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pde. (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs (XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000 (XEN) Invalid bit width in GAR (XEN) Using ACPI (MADT) for SMP configuration information (XEN) SMP: Allowing 4 CPUs (0 hotplug CPUs) (XEN) IRQ limits: 24 GSI, 760 MSI/MSI-X (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K (XEN) CPU: L2 cache: 4096K (XEN) CPU: Physical Processor ID: 0 (XEN) CPU: Processor Core ID: 0 (XEN) CMCI: CPU0 has no CMCI support (XEN) CPU0: Thermal monitoring enabled (TM2) (XEN) Intel machine check reporting enabled (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN) Initializing CPU#0 (XEN) Detected 2992.579 MHz processor. (XEN) Initing memory sharing. (XEN) alt table ffff82d0802b8c50 -> ffff82d0802b9ff4 (XEN) PCI: MCFG configuration 0: base e0000000 segment 0000 buses 00 - 25 (XEN) PCI: MCFG area at e0000000 reserved in E820 (XEN) PCI: Using MCFG for segment 0000 bus 00-25 (XEN) I/O virtualisation disabled (XEN) CPU0: Intel(R) Xeon(R) CPU 5160 @ 3.00GHz stepping 06 (XEN) ENABLING IO-APIC IRQs (XEN) -> Using new ACK method (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1 (XEN) Platform timer is 14.318MHz HPET (XEN) Allocated console ring of 32 KiB. (XEN) mwait-idle: does not run on family 6 model 15 (XEN) VMX: Supported advanced features:ing 06 (XEN) CPU 2 APIC 6 -> Node 0 (XEN) Booting processor 2/6 eip 8a000 (XEN) Initializing CPU#2 (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K (XEN) CPU: L2 cache: 4096K (XEN) CPU: Physical Processor ID: 3 (XEN) CPU: Processor Core ID: 0 (XEN) CMCI: CPU2 has no CMCI support (XEN) CPU2: Thermal monitoring enabled (TM2) (XEN) CPU2: Intel(R) Xeon(R) CPU 5160 @ 3.00GHz stepping 06 (XEN) ----[ Xen-4.6.0-9.el7 x86_64 debug=n Not tainted ]---- (XEN) CPU: 2 (XEN) RIP: e008:[<ffff82d080181c79>] set_cpu_sibling_map+0x39/0x340 (XEN) RFLAGS: 0000000000010006 CONTEXT: hypervisor (XEN) rax: 0000000000000020 rbx: 0000000000000200 rcx: 00000037a6cb1580 (XEN) rdx: 0000000000000003 rsi: 0000000000000000 rdi: 0000000000000002 (XEN) rbp: 00000000000000c8 rsp: ffff830826fb7e90 r8: 00000037a6cb1580 (XEN) r9: 00000037a6cb1580 r10: 0000000000000007 r11: 0000000000000001 (XEN) r12: 0000000000000002 r13: 0000000000000002 r14: 0000000000000000 (XEN) r15: 0000000000000000 cr0: 000000008005003b cr4: 00000000000026e0 (XEN) cr3: 00000000bfc70000 cr2: 0000000000000020 (XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: 0000 cs: e008 (XEN) Xen stack trace from rsp=ffff830826fb7e90: (XEN) ffff82d0802f4380 0000000000000012 0000000000000000 00000100801ad2d1 (XEN) ffff82d0802f4380 0000000000000000 00000000000000c8 0000000000000002 (XEN) 0000000000000002 0000000000000000 0000000000000000 ffff82d08018213c (XEN) 0000000000000000 0000000000000001 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) 0000000000000000 0000000000000000 0000000000000002 ffff8300bffa5000 (XEN) 00000037a6cb1580 0000000000000000 (XEN) Xen call trace: (XEN) [<ffff82d080181c79>] set_cpu_sibling_map+0x39/0x340 (XEN) [<ffff82d08018213c>] start_secondary+0x1bc/0x260 (XEN) (XEN) Pagetable walk from 0000000000000020: (XEN) L4[0x000] = 000000083d21c063 ffffffffffffffff (XEN) L3[0x000] = 000000083d21b063 ffffffffffffffff (XEN) L2[0x000] = 000000083d21a063 ffffffffffffffff (XEN) L1[0x000] = 0000000000000000 ffffffffffffffff (XEN) (XEN) **************************************** (XEN) Panic on CPU 2: (XEN) FATAL PAGE FAULT (XEN) [error_code=0002] (XEN) Faulting linear address: 0000000000000020 (XEN) **************************************** (XEN) (XEN) Reboot in five seconds... (XEN) Resetting with ACPI MEMORY or I/O RESET_REG. -- Alvin Starr || voice: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin(a)netvel.net ||

1 0

virtio not installing correctly
by isdtor 02 Feb '16

02 Feb '16

I have converted a physical machine to kvm, following instructions on the proxmox wiki. So far so good. Now I'm attempting to convert the vm from ide to virtio following the instructions here, http://www.linux-kvm.org/page/Boot_from_virtio_block_device, with virtio-win-stable from Fedora. The guest is running Windows XP. When the new hardware wizard popped up finding the RedHat VirtIO SCSI controller, I pointed it to the viostor/xp directory on the iso. It appears as if all files have been copied, viostor.sys to C:\Windows\system32\DRIVERS, the green progress bar goes all the way to the right, but it's been sitting there over night with no further progress. There is a vioscsi directory on the iso, but it contains no drivers for XP. >From a previous attempt, I know that if I reboot the vm now and try to enter safe mode, it will hang after loading the agp driver. Host OS is CentOS 6.7.

3 7

When will CentOS 7.1 become available as an AWS AMI?
by Peter Weissbrod 02 Feb '16

02 Feb '16

I am in need of some AWS instances of this version. There are "community" instances of 7.1 but I would strongly prefer an official release from CentOS team over trusting my base image to an unknown publisher. Is there any plan/projection of when CentOS will publish 7.1 to the AWS marketplace?

2 2

How to build CentOS 7 AMI
by Alan Ivey 01 Feb '16

01 Feb '16

I'd like to revisit the thread about how the CentOS 7 AMIs are created ( https://lists.centos.org/pipermail/centos-devel/2015-July/013652.html) and see if the process can be published in the https://github.com/CentOS/sig-cloud-instance-build repository or another relevant location. With CentOS 7 AMIs only being available in the Marketplace, all resulting EC2 instances have the Marketplace codes attached to the EBS volumes. A significant restriction of this is that a resulting image cannot be the non-primary volume of an instance unless it is powered down. This presents itself to be a problem in at least the following scenarios: - Unable to attach a CentOS 7 boot volume to another instance for repair without either creating a temporary instance or shutting down an existing one. For example, if you messed up the /etc/sudoers file and logged out, and wanted to repair, you would not be able to repair by mounting to another instance and editing the file without incurring additional (albeit small) cost, or having an existing instance be temporarily unavailable. - The "amazon-chroot" Packer Builder ( https://www.packer.io/docs/builders/amazon-chroot.html) does not work because it starts by mounting a copy of the snapshot tied to the AMI as part of a scripted operation and therefore cannot power off to do so Custom AMIs, snapshots, copied EBS volumes, etc, all have the marketplace codes copied to them and inherit the restrictions. If an org was to use these features for automating environments and was disconnected from the original Marketplace agreement, they may be unaware of this limitation. I would also appreciate being able to have the additional transparency of seeing how an AWS AMI is created as the docker/openstack/etc images from the repository referenced above. This would be useful in environments with regulatory compliance concerns, such as AWS GovCloud, HIPAA, FedRAMP, etc. I understand the benefit that Marketplace registrations allow for the ability to notify users of any changes, and I am not necessarily advocating for switching away from the Marketplace as the primary AMI location. I would like to be provided the opportunity to build a private AMI in the exact same procedure as the official image so as to avert the restrictions provided by the Marketplace. Thank you, Alan

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