similar to: using shared storage with libvirt/KVM?

Hi, I am trying to set up a shared iscsi storage to serve 6 kvm hypervisors running centos 6.2. I export an LVM from iscsi and configured virt-manager to see the iscsi space as LVM storage (a single storage pool). I can create space on this LVM storage pool directly from virt-manager and I am already running a couple of sample VMs, that do migrate from one hv to the other. This configuration

Hi everyone! I have 2 hosts + 1 ISCSI device. I want to create a shared storage repository and both hosts use together. I wont use NFS. prepared sr: xe sr-create host-uuid=xxx content-type=user name-label=NAS1 shared=true type=iscsi device-config:target=xxxx device-config:targetIQN=xxxx hosts see the iscsi device: scsi4 : iSCSI Initiator over TCP/IP scsi 4:0:0:0: Direct-Access NAS

I wonder if someone can point me in right directions. I have two dell servers I setup iscsi so I have four 2 tb hard drives and i had used lvm to create one big partiton and share it using iscsi. How I go about assigning sections of iscsi for virtual hard drives . should go about assigning Should I export the whole 8TB as one iscsi and then use lvm to create smaller virtual disk. Or should I

Hi, I'm trying to set up an iscsi 12.5 TB storage for some data backup. Doing so, I had some difficulties to find the right tool, maybe it's also a question of the system settings... The server is a 32Bit CentOS 5.3 with the recent updates. Ths iscsi connection can be establised. fdisk and parted fail to create any information on the device or fail completely. using the lvm tools

Hi list, I'm having one of those 'I'm stupid' -problems with LVM on CentOS 5.2. I've been working with traditional partitions until now, but I've finally been sold on the theoretical benefits of using LVM, but for now I only have a huge pile of broken filesystems to show for my efforts. My scenario; I attach a disk, either over USB or iSCSI. I create a PV on this

When I use kvm+libvirt as my hypervisor at home, I usually pass logical volumes as the guests' drives (I probably can do better but the disk here is just a garden-variety SSD, not NVMe). <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'

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

Hi all, In threads posted by I believe Jonathan Tripley I promised to post my new XEN HA setup. Hope it can be of some use to some people. In this particular case I''m forced to use SLES 10SP3 with XEN 3.2, which excludes the possibility of using things like cLVM (which I don''t think I need anyway). So: Storage: I use two HP ML370 G5 machines with DRBD and heartbeat on

On 2013–12–21 John Ferlan wrote: > On 12/17/2013 07:13 PM, Marco wrote: > > Hi! > > > > I'm new to libvirt and face problems connecting to an iSCSI target. > > What I intend to do is to connect libvirt (I tried virt-manager and > > virsh) to an iSCSI target and then boot from the LUNs which contain > > the VMs. > > > > I followed the

On 2/11/2016 5:14 AM, lejeczek wrote: > nobody does use iscsi loopback over an lvm? I'm not sure what 'iscsi loopback' even means. iSCSI is used to mount a virtual block device hosted on another system (initiator mode) or to share a virtual block device (target mode), while loopback is used to mount a local file as a device, such as an .iso image of an optical disc. can you

Are folks in the Centos community succesfully using device-mapper-multipath? I am looking to deploy it for error handling on our iSCSI setup but there seems to be little traffic about this package on the Centos forums, as far as I can tell, and there seems to be a number of small issues based on my reading the dm-multipath developer lists and related resources. -geoff Geoff Galitz Blankenheim

Hi. I have some narrow questions and a larger one. If I make an existinig LVM VG a storage pool, can I use some of the LV's for libvirt and some for the host? Or does the VG needed to be completely dedicated to virtualization? Assuming mixed use is possible, is it possible to do an LVM snapshot of an LV in use for a VM? The snapshot would have to be initiated and used on the host, I

Hi All. Looking for some guidance/experience with LVM and pvmove. I have a LUN/PV being presented from a iscsi SAN. The LUN/PV is presented to 5 servers as a shared VG they all have LV's they use for data, they are all connected via iSCSI. As the SAN I am using is being replaced I need to move onto a new unit. My migration strategy at this time is to 1. Present a new LUN from the new SAN

Hello, as usual, I'm few years behind trends so I have learned about LVM thin volumes recently and I especially like that your volumes can be "sparse" - that you can have 1TB thin volume on 250GB VG/thin pool. Is it somehow possible to use that with libvirt? I have found this post from 2014: https://www.redhat.com/archives/libvirt-users/2014-August/msg00010.html which says

Hello all, I am looking to build a larger array (6TB) using CentOS 4.4 to archive data to. We want to have the Windows server mount this array as a local drive so we were looking at iSCSI to do it. I have played with it in the past and gotten it to work in this combo, but I have a question about access to the data on the local (Centos) machine. If I understand correctly, when I mount the

I''ve been using lvm under centos to create the backing store for domUs and although the performance seems acceptable it has some shortcomings. The biggest of which is the LVM bug which prevents me from removing an lv (it says it is still mounted and it definitely isnt). I thought this was just a centos bug but it appears to be evident in debian and ubuntu too and I really can''t

Hi! I'm new to libvirt and face problems connecting to an iSCSI target. What I intend to do is to connect libvirt (I tried virt-manager and virsh) to an iSCSI target and then boot from the LUNs which contain the VMs. I followed the documentation¹ but got stuck at section 12.1.5.4.3. 1) virsh pool-define-as \ --name foo \ --type iscsi

Hello, I am currently trying to move my VMs from running on local host storage to a shared storage (trying out iSCSI) but I am facing a bit of a booting dilemma. The domUs are a mix of paravirtualized and fully-virtualized VMs. They all boot and run like clockwork when on local storage. The paravirtualized domUs appear not to have a problem when I relocate and boot them from the shared storage

Hello all, I am attempting to use the 'virsh attach-device' command to add storage to a guest from a pre-defined iSCSI-based storage pool. My desire is to attach a volume from the storage pool and have the storage pool recognize that the volume is in use and either flag it as such, or remove it from the pool so that subsequent queries to the pool will only return available storage

Hi Strahil, In our setup, the Gluster brick comes from an iSCSI SAN storage and is then used as a brick on the Gluster server. To extend the brick, we stop the Gluster server, extend the logical volume (LV) on the SAN server, resize it on the host, mount the brick with the extended size, and finally start the Gluster server. Please let me know if this process can be optimized, I will be happy to