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Questions tagged [domu]

This tag is for questions related to 'unprivileged domain', managed by the dom0 or 'most privileged domain' of the hypervisor Xen.

domU means 'unprivileged domain', managed by the dom0 or 'most privileged domain' of the hypervisor Xen.

19 questions
4
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3 answers

Easiest way to convert HVM DomU to PVM?

I've got a bunch of Xen 3.4 DomUs that are currently running as HVM because of our infrastructure (Kickstart which doesn't handle Xen PVM yet). Both DomU and Dom0 are RHEL5 machines. If I understand the documentation and configuration correctly, it…
Nikolai Prokoschenko
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4
votes
3 answers

Xen HVM guest has severe clock drift

I am seeing a very severe clock drift on my Xen HVM VPS, rented from a hosting provider, so I don't have access to the dom0 system. I continuously run ntpd, but the clock drifts by as much as 30 seconds in 5 minutes and NTP cannot keep up. Has…
ipartola
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4
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6 answers

What do you recommend? OpenVZ or Xen DomU?

I’m looking for a new server at the moment and a fitting virtualization solution. On my recent server I’m using VMware server but don’t what this one anymore as it is very very slow. I have the opportunity to work on a cluster which is using Proxmox…
Ulf Klose
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2
votes
1 answer

Xen SATA PCI Passthrough to Ubutnu DomU not recognising disks

I have a Xen 4.1 server with a Debian Wheezy 7.4 Dom0 (hmpyxen01). It has a SATA PCI card that I am passing through to an Ubuntu Precise 12.04 DomU (hmvmtmp01), installed via xen-tools which in this case is just a wrapper for debootstrap so the DomU…
Tim Jones
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2
votes
2 answers

Crashing HVM domain, what do I do?

My DomUs on a Xen 3.4 on an RHEL5 are crashing when too much memory is needed: (XEN) p2m_pod_demand_populate: Out of populate-on-demand memory! (XEN) domain_crash called from p2m.c:1091 (XEN) Domain 15 (vcpu#3) crashed on cpu#2: (XEN) ----[…
Nikolai Prokoschenko
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1
vote
1 answer

Xen dom0 bridge interface drops a lot of RX packets?

I'm running Gentoo Hardened as Dom0. It also acts as a router/NAT. There's a bridge interface called br0 which contains a pci-e wlan card, ethernet nic & domU. bridge name bridge id STP enabled interfaces br0 …
ponkay
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1
vote
1 answer

Booting Ubuntu 12.10 guest on Debian 6.0.4 Xen with pygrub

I'm trying to run a Ubuntu 12.10 off a Debian 6.0.4 and Xen-4.0. I realised that pygrub might not be able to parse the menu.lst (I symlinked menu.lst to grub.cfg in /boot) and ended up with this configuration: # # DO NOT EDIT THIS FILE # # It is…
Pascal
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1
vote
3 answers

How to reset root password CentOS (domU) hosted in Xen?

Need help on resetting root password of a CentOS which is a guess OS (domU) in XEN. I already tried to get to grub but it doesn't display or maybe using a different grub (pygrub). Thanks in advance.
Raleigh Guevarra
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vote
1 answer

Xen guest - cannot get network connection beyond the host

I've just installed a XenServer 6.1. It came with a standard configuration, network 0 connected to NIC 0. I created a VM but I can't reach any network beyond the host. From the VM (172.18.32.20), I try to ping 172.18.32.254. Trying to make it work,…
Icu
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1 answer

Why 'part' is mounted inside LVM

In lsblk command. I am seeing a 'part' type sub partition mounted under 'lvm' as below. [root@srv ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 447.1G 0 disk └─sda4 8:4 0 379.2G 0 part └─md3 9:3 0 379.1G 0 raid1 …
Jai
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0
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2 answers

How do I get a Xen domU to notice a change in the block size of one of its phy devices?

I'm running lvm in my Xen domU, and I can increase the size of a logical volume on the fly, and inside the domU I can increase the size of the filesystem on the fly to the size of the domU's block device, but without restarting the domU I can't…
rakslice
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1 answer

Rate Limit Xen DomU Network Traffic

Is there a solid way to rate limit Xen DomU Network I/O Traffic? I found an answer on here using tc but I get this error: Object "qdisk" is unknown, try "tc help". I guess a solution to either of these problems would be excellent.
Der Kommissar
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1 answer

Xen domU sees 35MB less than assigned

I am using ubuntu precise 12.04 and I am booting a paravirtualized ubuntu 12.04 domU, all being 64 bits. The VM has memory=1024 assigned and xentop at the host correctly shows 1024MB, but htop in the domU only reports 989MB. Where are the other 35MB…
Steffen Heil
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0
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1 answer

dom0 enable IPv6 for guests

I am looking at deploying IPv6 to my virtual machines. Right now I have v6 working great on the dom0 using a 6in4 provided by Hurricane Electric as I do not have native v6. However, I would like to distribute some of the /48 I am receiving to the…
user98651
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0
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1 answer

Why would Xend try to restore a deleted domain/VM?

I have a domain 'host10' that no longer exists on the system. The config file was renamed, the configuration changed to point to a different .img, and the image name was renamed as well. I've done this multiple times, in the end I renamed and moved…
mistiry
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