similar to: How to Allocate Disk Bandwidth among VMs?

I inherited a xen server that is setup to have all the VM images hosted on an iSCSI mounted NAS array. We been experiencing a random (about every 2-3 days) issue where xen would crash all the VMs, leaving nothing but the Domain0 running. What appears to be happening is something causes the iSCI mount to hiccup. Running "vgchange -a y" and restarting all the VMs brings everything up.

This patchset includes an updated version of the SCSI frontend and backend drivers. The frontend and backend drivers exchange SCSI RDMA Protocol (SRP) messages via a ring buffer. The backend driver sends SCSI commands to the user-space daemon, which performs SCSI commands and I/O operations. The backend driver uses VM_FOREIGN feature like the blktap driver for zero-copy of data pages. Like the

I could use some help trying to recover VMs on a system that used to run xen-3.0.0 under sarge. The host (Domain0) bit the dust, so I rebuilt it using SUSE Linux 10.1 which has xen-3.0.2-2 packages. xend is running and I can do xm list, xm info and so on. It still sees the LVM volume groups that the VM data resides on. My VMs are sitting on /dev/vg20/vol01, /dev/vg20/vol03 .... Because I lost

Hello All I just recently adopted a server with Gentoo/Xen as domain0 server with several domainUs attached to it. Please forgive my xen-noobness, but I was hoping that someone can help me out. These images have not been updated in a long time, and I''m trying to get all the domainUs updated with their appropriate services patches, etc. I''m currently working on one Gentoo

Hi! I like to allow to several DomainUs admins to admin his virtual servers with a web interface, without contact with Domain0. This tool must be opensource, and allow shutdown, reboot and see the logs with a web user / pw. Perhaps too the memory, CPU, ,,, of the virtual server. Are there any tool some this? Any pointer will be welcomed. Regards, Agustin

Hi list, Is it possible to have NFS based load balancing and failover enabled storage without stacking switches? Or is this only doable with iSCSI and multipathd? I''m reading about XenServer and openvswitch, how multiple VMs would be able to use all physical links using SLB bonds, it works for networking but not for storage? (As the nfs share is mounted on dom0?) Using openvswitch

Hi All, I''m a beginner in Xen. Recently I''ve configured one VM (vm03) hosted in my physical machine. I ran the "netperf" workload in the vm01, and used the "top" command in the vm03 to test the behavior of the running workload. Meanwhile, I also used the "xentop" command in domain0 to see the resource consumption in vm03. Interestingly, I found that

> This subthread in the Xen patch thread has now digressed onto discussions > about entropy and security. Perhaps you guys could add some points. Well, I can try. I don't think this answers any questions, but perhaps it informs the discussion. Apologies if the Cc: list is getting a bit bloated. > On 11 May 2006, at 01:33, Herbert Xu wrote: >>> But if sampling virtual

> This subthread in the Xen patch thread has now digressed onto discussions > about entropy and security. Perhaps you guys could add some points. Well, I can try. I don't think this answers any questions, but perhaps it informs the discussion. Apologies if the Cc: list is getting a bit bloated. > On 11 May 2006, at 01:33, Herbert Xu wrote: >>> But if sampling virtual

All, I have a specific use case where I want to be ale look at vfs or blk_io requests on the host machine and differentiate which VMs the access is originating from. I am assuming a Disk backend, and looking for virsh command or libvirt API that can help me do so. I have tried quite a bit to Google-fu this problem; no such luck. Would love to know if there is some cute trick to do so. Thanks.

On Mon, Sep 29, 2014 at 01:22:19AM +0800, Zhi Yong Wu wrote: > Yes, I am trying to run it in Xen Domain0. I thought that we can use > Domain0 as a public libguestfs VM, This will avoid starting a new > guest for virt-xxx every time, But Domain0 has no corresponding qemu > task. So this way isn't available. > Now, i am considering if we can run private VM for libguestfs which

On Mon, Sep 29, 2014 at 1:27 AM, Richard W.M. Jones <rjones@redhat.com> wrote: > On Mon, Sep 29, 2014 at 01:22:19AM +0800, Zhi Yong Wu wrote: >> Yes, I am trying to run it in Xen Domain0. I thought that we can use >> Domain0 as a public libguestfs VM, This will avoid starting a new >> guest for virt-xxx every time, But Domain0 has no corresponding qemu >> task. So

Hello all, I try to set a ntp server in domainU, but other vms cannot synchronizes with the ntpserver VM. When I choose to set ntp server in domain0, synchronization can be done. Why is that? I install xcp-xapi 1.5 on ubuntu server 12.04 64-bit. Many thanks! clayton claytonly _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org

Hi, I have a couple of questions. on Xentop: In Xentop what does the NETS column mean. I see a NETTX and a NETRX, and i think they mean the number of network bytes transmitted and received. Also what does the VBDs number mean. Is that the number of block device IO operations? or the number of IO bytes. on vcpu-list: I expected that at any point of time a pcpu would have only 1VMID in

# HG changeset patch # User Ian Campbell <ian.campbell@citrix.com> # Date 1346428441 -3600 # Node ID ddde6c2c45de8e60518aafa077f0f3867ff68e17 # Parent ccbee5bcb31b72706497725381f4e6836b9df657 libxl/xl: implement support for guest iooprt and irq permissions. This is useful for passing legacy ISA devices (e.g. com ports, parallel ports) to guests. Supported syntax is as described in

Hi : As I want to know the information of the VMs that currently runing on the same physical machine, I''d like to get those VM''s information from xenstore, such as macaddress. Indeed, what I want is IP address, so, if guest can write things to xenstore, I''d like it write its IP address into xenstore and let domain0 reads it directly. So, can anybody tell me whether a PV

On Mon, Sep 29, 2014 at 1:14 AM, Richard W.M. Jones <rjones@redhat.com> wrote: > On Mon, Sep 29, 2014 at 12:55:04AM +0800, Zhi Yong Wu wrote: >> On Mon, Sep 29, 2014 at 12:36 AM, Richard W.M. Jones <rjones@redhat.com> wrote: >> > On Sun, Sep 28, 2014 at 11:43:17PM +0800, Zhi Yong Wu wrote: >> >> Yeah, but why did it happen when i directly issue guest VM

Hi All I have xen 4.0 in centos dom0 the machine was working fine for months and yesterday out of sudden I can no longer provision new vms and to make things worst If any vm shutdown I cannot re run it again . the vm stop at the process of detecting the (ubuntu and debian all versions) [!] Detect Disks "No disk drive was detected. If you know the name of the driver needed by your disk

I''ve read up on VM migration but didn''t see any instructions for this, or whether it''s even possible. Is there a migration compatibility matrix somewhere that details the xen versions, storage, VM modes, etc that are compatible? Can I migrate an HVM linux VM from a xen 3.3 server that uses file backed VMs to a 4.01 server and use LVM storage? I''m phasing out

Add support for mapping hardware io memory into domains via domain config files. The syntax is iomem=[PAGE,NUM_PAGES] Signed off by Matthew Fioravante: matthew.fioravante@jhuapl.edu --- Changes from previous * Rebased onto latest xen-unstable * Rewrote the feature to mimic the style used by iports and irqs in current libxl * Updated xl.cfg manpage * removed the redundant "allow"