similar to: RE: [PATCH] Blktap: Userspace file-based image support.(RFC)

Hi all, Can anyone pleas tell me what would be best practice to use shared storage with virtual machines, especially when it involved high availability / automated failover between 2 XEN servers? i.e. if I setup 2x identical XEN servers, each with say 16GB RAM, 4x 1GB NIC''s, etc. Then I need the xen domU''s to auto failover between the 2 servers if either goes down (hardware

The following patch allows the network tests to pass with hvm support enabled. More specifically: 02_network_local_ping_pos.py REASON: ping loopback failed for size 65507. ping eth0 failed for size 65507. (but all other size pings work) 05_network_dom0_ping_pos.py REASON: Ping to dom0 failed for size 65507. (but all other size pings work) 11_network_domU_ping_pos.py passes 100% (even the large

If a Xen guest has a bootloader configured, then it will fail to start on a blktap image. The problem is blkdev_uname_to_file, which cannot parse the "tap:aio:$filename" image strings: it tries to split the string apart at ":" and assign the result to a 2-tuple, and this results in a python error if the split results in three or more strings. The fix is to split only at the

In a prior message I documented my woes in getting an NFS_ROOT xen going. I haven''t resolved those yet, want to try a different tack at this: If the group were to recommend a path of least resistance to showing migration/live migration, which configuration would it be? Joe. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Hello, I''d like to be able to create a windows DomU which is to be stored on a NAS (Equallogic) device. I was wondering if anyone has any best practices on how to do this? Is there a way to extend the DomU C drive once you create the initial device, etc? Any suggestions would be great. I have already tried this by just using a phy:/dev/path-to-iscsi-mount- point and it appears to

Hi Everyone, I am going to get a storage server which will be connected to my Xen hosts via iSCSI/Ethernet. I wish to use LVM for the DomU disks. The storage server will have a RAID10 array, and 2 Xen hosts will connect to this (Each will have a 50% share of the RAID10 array, space wise). What is the best way to go about this? Should I: a) Split the RAID10 array into 2 partition on the

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.

Attached to this email is a patch containing the (new and improved) blktap Linux driver and associated userspace tools for Xen. In addition to being more flavourful, containing half the fat, and removing stains twice as well as the old driver, this stuff adds a userspace block backend and let you use raw (without loopback), qcow, and vmdk-based image files for your domUs. There''s also a

This patch adds a test that tries to create a domain with only 16MB of RAM. It verifies that the domain is created and that the console works. Right now this test fails for me: the domain just dies immediately with no indication of why, or with any useful console data. Should we put a sanity check on xm''s create and mem-set commands that prevent the user from doing something we know

Hi, On paravirt x86 (both 32- and 64-bit), since cset 13998: http://xenbits.xensource.com/xen-unstable.hg?rev/13998 we translate all ptes from being mfn-based to pfn-based when the hardware _PAGE_PRESENT bit is cleared. We do this for PROT_NONE pages, which appear to the HV to be non-present, but which are special-cased in the kernel to appear present (a different bit in the

The attached patch: 1. Converts the shutdown driver and xend to use the store instead of control messages, 2. Includes Anthony''s xenstore notification code, and 3. Changes xend so that sysrq''s are no longer sent as "special case" shutdown messages. Store keys are cheap, so making the sysrq delivery less obscure is good. I think I have made all of the

Hi people... Here we use Xen 4 with Debian Lenny... We''re using kernel 2.6.31.13 pvops... As a storage system, we use AoE devices... So, we installed VM''s on AoE partition... The "NAS" server is a Intel based baremetal with SATA hard disc... However, sometime I feeling that VM''s is so slow... Also, all VM has GPLPV drivers installed... So, I am thing about

Hello list, I want to use shared volumes between severall vm''s and defenetly don''t want to use NFS or Samba! So i have three options: 1. simulated(software-) iscsi 2. GFS 3. OCFS2 What do you suggest and why? Kind regards, Florian ********************************************************************************************** IMPORTANT: The contents of this email and any

Hello, We need to use iSCSI in some of our domUs. By the moment, iSCSI is not for system filesystem, but for data filesystem. I am wondering what is the best way to use it. Is it better to configure it in dom0 and then attach the device to the domU? Or is it better to configure it directly in the domU? I am thinking that if we configure it in the dom0, then we can''t share that iscsi

I''ve been brainstorming... I want to create a 2-node HA active/active cluster (In other words I want to run a handful of DomUs on one node and a handful on another). In the event of a failure I want all DomUs to fail over to the other node and start working immediately. I want absolutely no single-points-of-failure. I want to do it with free software and no special hardware. I want

Hi all, Can anyone pleas tell me what would be best practice to use shared storage with virtual machines, especially when it involved high availability / automated failover between 2 XEN servers? i.e. if I setup 2x identical XEN servers, each with say 16GB RAM, 4x 1GB NIC's, etc. Then I need the xen domU's to auto failover between the 2 servers if either goes down (hardware failure /

Hi, I''m currently trying to install xapi on debian (unstable), following the following wiki page: http://wiki.xensource.com/xenwiki/XAPI_on_debian 1. Install squeeze 32-bits (it''s not specified on the wiki, but I guess it wont work with 64-bit as the xapi *.deb files are for 32). note: you must leave an unused 1mb partition somewhere when creating your

Hi people. Im new on Xen and I''m looking in how to do a physical migration on Xen. I know that there is a lot of choices (that is the first problem) My environment is simple: 2 physical servers, each one running one instance of XEN. Each host has 2 gigabit cards. One to talk with the world, other to talk between theirselves. I want to run the every vm on the both hosts, if one fail

Hi, We are planning to have LVM being used over a network of 3 h/w machines(500 GB Disk each) Each hardware machine will have 2-3 domUs. Can we store these domUs as a Logical Volumes stored across Network of these 3 machines? Can one DomU exceed the 500 GB (physical drive size) and store say 1 TB of data across the networked Physical Volumes? Has anyone done this before? Thanks and regards,

Hello, I want to implement a diskless xen hypervisor. The way I suppose it will work is xen booted over pxe and getting iscsi san storage to store vm images. Is solution like that usable ? _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users