0
votes
1answer
4 views

Xen lvm resize2fs: Bad magic number in super-block

First of all i have to say i've been looking through lots of posts very similar to what i have but none could solve my problem... In my xen server i use 5 lvm disks per virtual machine: /boot / ...
2
votes
1answer
61 views

Moving LVM volume group from one physical disk onto another

I'm an out-of-my-depth PHP developer who has to deal with the following sysadmin problem, pronto. We have an Ubuntu (Ubuntu 14.04.1 LTS) server run Xen (xen-hypervisor-4.4-amd64 4.4.0-0ubuntu5.1). ...
0
votes
0answers
80 views

Resize a logical volume of an LVM inside another LVM (Xen Dom0)

I have a Xen guest, which its main disk is on an LV (let's call it "domu-disk", VG name "xen"). It's on one single 1T drive at the moment. Inside that domu-disk, it was partitioned into one primary ...
1
vote
0answers
94 views

reclaim space from xen server

i found xencenter stotage => general tah display 1096.6 GB used of 1107.7 GB total (708.5 GB allocated) seen some space have been eaten and not release. the SMLog show that [13816] 2014-03-28 ...
0
votes
1answer
31 views

Very high load during pvmove in domU

I had a pretty bad time this evening. I had to move LVM2 LVs from one PV to another (source PV backed by NFS stored vdisk, target PV backed by an iscsi LUN). Moving small LVs of ths VG (few gigabits) ...
-3
votes
1answer
47 views

Xen doesn't boot after install [closed]

I tried to setup Xen by the instruction released on the site of my hoster. I installed Xen, completed RAID setup as it is told in the instruction. Rebooted and succesfully connected to Xen from ...
1
vote
1answer
292 views

RAID1 LVM, XEN and flashcache

I am regarding to question: Improving IO with FlashCache I have setup a RAID1 (/dev/md0) LVM (*/dev/vg_xen*) and executed following command: flashcache_create -p thru flashcache0 /dev/sdc /dev/md0 ...
0
votes
0answers
148 views

Why does Xen fail to create domUs/start the virtual network interface?

I have received two errors while trying to create a new domU on Xen. First, I received this error: Unable to complete install: 'POST operation failed: xend_post: error from xen daemon: (xend.err ...
0
votes
1answer
422 views

Grub can't find Xen multiboot file

I am running Debian Wheezy on a software RAID 0 with LVM. I'm trying to get Xen to work but grub refuses to boot in it. I installed Xen by following the instructions here: http://wiki.debian.org/Xen ...
1
vote
2answers
71 views

mount a partition on an lvm partition

I have a xen dom0 server (named virtserver), which contains a guest machine, let's call it "virtguest". The virtguest used to be a physical machine earlier, and the whole old disk (with several ...
2
votes
1answer
484 views

I can't mount a LVM snapshot on a XEN host

I'd like to backup my XEN VMs by copying-rsyncing a LVM snapshot. I'm trying to mount a snapshot that contains a XEN guest's virtual disk (ext4). Below are all the steps I follow. I can't mount the ...
0
votes
1answer
196 views

Resize LVM partition DomU Windows

I have a xen DomU running with Windows Server 2003 on a lvm partition has 10GB but i need more. if a Linux partition, I would do: # umount # lvextend -L +10G /dev/<VG>/<LV> # resize2fs ...
1
vote
1answer
299 views

Restore data from overwritten LVM

I lost all of my data (8 TB) which I collected over the past few years yesterday because I made some seriuos mistakes during the remounting of my LVM. I run a XenServer5.6 installation with additional ...
0
votes
1answer
2k views

Xenserver 5.6 SR_BACKEND_FAILURE_47 no such volume group, but it is there

I've looked everywhere (Google, here, a bunch of other sites), and while I have found people with similar problems, I couldn't find a single one with a solution to this. Last night our xenserver 5.6 ...
0
votes
0answers
624 views

XEN Domain crash - kernel panic

I have a server with CentOS 5.8.Final, running the 2.6.18-308.4.1.el5xen kernel. I installed the Virtualizorpanel 2 months ago and my VPS are OK, but yesterday one of my VPS crashed. I changed theRAM ...
4
votes
1answer
445 views

Is TRIM passed through a LVM-based PV Xen domU to the underlying SSD

Scenario: -- Debian Xen dom0 -- SSD drive setup as LVM PV/single Volume Group. -- Debian pv_ops-based domU setup on LVM logical volume. -- File system inside domU is ext4 with discard option enabled. ...
6
votes
3answers
2k views

Backing up Xen domains

I'm currently developing a Xen backup system, however I have met the following problem: I have two methods of backing up: doing dd from the LVM snapshot, and tarring it., and rsync it remotely ...
1
vote
1answer
392 views

Creating Xen backups

I'm looking for a way to create Xen (HVM) backups, using LVM. I know xm save but that is a) inefficient space wise, b) the VM will shut down. I found rsnapshot which is able to create an LVM snapshot, ...
0
votes
1answer
297 views

resize a xen hvm disk

Ok, I am trying to resize a Xen HVM disk. I have added the space to the vm as you can see here it is now 780GB. --- Logical volume --- LV Name /dev/VM_VolGroup/vm104_img VG Name ...
2
votes
3answers
801 views

All Xen domU LVM volumes corrupt after reboot

I'm running a Debian Squeeze dom0, and after rebooting it all 7 of my domUs have data corruption. Each is setup as ext3 partition directly on a separate lvm2 volume. None of the lvm volumes will ...
1
vote
3answers
2k views

Centos Xen resizing DomU partition and volume group

I have a setup like so: Dom0 LV | DomU Physical Disk | | XVDA1 XVDA2 (/boot) (DomU PV) | VolGroup00 (DomU VG) ...
0
votes
2answers
240 views

Xen kernel will not boot after upgrade to Ubuntu 10.04

We upgraded our Ubuntu with Xen to 10.04 after the upgrade it will boot into the regular ubuntu, however it will not boot into the Xen (3.3) kernel. Our output : What we tried : increase ...
1
vote
2answers
632 views

Proper way to partition filesystem with Xen

I'm coming from a vmware environment, wanting to play with Xen. I have a server with 2 x 500G SATA drives (no hardware RAID available, have to use software-based RAID1). My partitions are all RAID1 ...
2
votes
1answer
453 views

Debian - corrupted GRUB

I have installed Xen on Debian following the official manual from debian.org. After that I runned grub-update and some time later removed Xen, including xen kernel. I runned grub-update one more time, ...
1
vote
1answer
256 views

high load and OOM-killer on domUs while pvmove

Situation xen 4.0.1 dom0 (debian squeeze) domUs all with LVs as disks: disk = [ 'phy:/dev/vg-00/domu-swap,xvda1,w', 'phy:/dev/vg-00/domu-disk,xvda2,w' ]) one VG (vg-00) with 2 PVs Goal Move all ...
3
votes
1answer
771 views

Xen: Convert image to lvm with minimal downtime

My Goals: Convert all my DomUs from image-based to lvm-based Minimal downtime Minimal performance impact on other DomUs/Dom0 My plan / setup: All my images are in a big lvm-volume, all lvs for ...
0
votes
1answer
528 views

LinuxHA cluster, advice needed regarding shared storage

I'm setting up a two-node Heartbeat+Pacemaker cluster to run Xen domUs in a fail-over and live-migrate type environment. Storage is a LUN on an (EqualLogic) iSCSI SAN device. I initially wanted to ...
0
votes
1answer
638 views

Debian Squeeze Ganeti - lvm.conf filter problem

I've been integrating the ganeti project and it has a problem with the ":" character at the PV ( physical volume ), name. By adding the line filter = [ "r|:|", "a|.*|"] in /etc/lvm.conf, when creating ...
0
votes
2answers
7k views

how to increase the space of root partition by taking space from a xen PV

I am stuck in pretty weird situation. I hope somebody here will help me. I have one centOS server with XEN installed on it. XEN has 3-4 virtual machiens running on it. As required by XEN, this server ...
0
votes
1answer
695 views

Strange log messages from LVM and server hang

On one of our OpenSUSE (11.3) virtualization servers we have had some stability problems recently. The server is pretty heavily loaded, with up to 100 virtual domains, all running on LVM snapshots. We ...
4
votes
1answer
4k views

LVM is reporting I/O errors, but the disk reports no problems. Argh

I've started seeing errors reported by LVM on certain Logical Volumes (and by Xen when attempting to create virtual machines on these LVs). But I've run tests on the disk, and can't see any hardware ...
0
votes
3answers
1k views

Getting an error when mounting LVM snapshot

I have migrated a file based Xen guest to LVM using dd bs=1M if=/dev/zero of=/dev/vg00/vm10 qemu-img convert ~/vm10.qcow2 -O raw /dev/vg00/vm10 and changed the Xen domain file for the VM to use the ...
0
votes
1answer
938 views

Converting raw image to LVM. Won't mount afterwards

According to this post, it should be okay, to use dd to convert a raw Xen image to LVM. What I have done dd if=/vm.img of=/dev/vg00/vm I can mount vm.img with mount -o loop vm.img /root/tmp. It ...
0
votes
1answer
476 views

How to mount a drbd/gfs logical volume from Xen VM?

Any hint on how to do this for primary/primary? I have drbd and gfs running ok, I can see the logical volume from the DomU but dont know how to mount it. Should I install gfs on DomU and mount??? ...
3
votes
4answers
5k views

vgcreate --> “Command failed with status code 5.” what does this mean?

i'm playing around w/ LVM on a centos domU in a xen-based vps. I'm in rescue mode and I've created one physical volume (pvcreate /dev/xvda1) for my entire drive, which is formatted as LVM. i'm now ...
2
votes
1answer
1k views

DRBD/LVM/Xen Setup not re-syncing/updating

I have a problem with a HA Cluster running on CentOS 5.4 x86_64. Software used: DRBD 8 (kmod-drbd-xen-8.0.16-5.el5_3.x86_64 / drbd-8.0.16-5.el5.centos) Heartbeat LVM2 Xen 3.1.2 My DRBD ...
5
votes
6answers
3k views

What is the perfect setup for a small Linux virtual server?

I have my own email server, and it serves a couple of dozen users. I need to replace it right now, and I want the replacement to be a virtual server image running under a hypervisor. My plans for ...
2
votes
2answers
815 views

Live Xen snapshotting?

If I use xm save domain dumpfile, this pretty much accomplishes what I want to do. However, this does cause some downtime, and I really don't want to close network connections or take the machine out ...
3
votes
5answers
3k views

Backup Xen domU machines while running

The host machine is running CentOS 5.3 and using LVM to create Logical Volumes (LVs) and to allow live snapshots to be taken of those LVs. My thought was to store all of the image files for the Xen ...
0
votes
4answers
6k views

Resizing Xen guests using LVM

I have a RHEL 5.4 server running as a Xen Dom0, and wish to install several RHEL 5.4 DomU guests using LVM as the guest disks. I have created the following two LVs: xen-test02-root VM-VG -wi-a- ...
3
votes
4answers
2k views

XenServer for NAS and Virtualization

I'm very new to all this so please go easy on me! I'm wondering whether you can run a NAS and virtualization with XenServer on the one box. Basically, we need virtualization and we've picked ...
8
votes
3answers
5k views

Xen image file vs partition/LVM volume performance

I read quite a lot of advice to switch from file-image VM storage, to partition/LVM volume based. The claim is that partition/LVM are much faster then image files. The downside in my opinion, is ...
2
votes
3answers
2k views

Red Hat Kickstart: How do I Prevent partitioning?

Hey all, I'm currently working on a new virtualisation setup using Xen, and Centos for my workplace. We intend to deploy the domUs into LVM volumes. Currently, the only thing preventing this from ...
15
votes
9answers
18k views

LVM snapshots as a backup strategy

How viable as a backup strategy would be periodical LVM snapshots of xen domU's? Pros, cons, any gotchas? To me it seems like the perfect solution for a fast, brainless restore. Any investigation ...
0
votes
2answers
738 views

Novell Xen cloud

I'm trying to set up a mini-cloud with Novell Xen (SLES 10 SP2 so it's Xen 3.2.x). I have an iSCSI server in the back, using a Starwind 4.1 target. The problem is that I when I write to the iSCSI ...