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M #- updates to storage and renamed Ecosystem
Signed-off-by: priscill <porue@opennebula.io>
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content/product/cluster_configuration/lvm/filemode.md

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title: "LVM (File Mode) SAN Datastore"
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linktitle: "LVM - File Mode"
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========
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title: "SAN Storage Configuration"
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linktitle: "LVM Thin - FS"
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date: "2025-02-17"
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description:
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categories:
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pageintoc: "72"
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tags:
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weight: "4"
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weight: "6"
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In this setup, disk images are stored in file format, such as raw and qcow2, in the Image Datastore,
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## How Should I Read This Chapter
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Before performing the procedures outlined in this chapter you must configure access to the SAN following one of the setup guides in the [LVM Overview]({{% relref "overview#san-appliance-setup" %}}) section.
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========
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## SAN Storage
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This storage configuration assumes that Hosts have access to storage devices (LUNs) exported by an
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Storage Area Network (SAN) server using a suitable protocol like iSCSI or Fibre Channel. The Hosts
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will interface the devices through the LVM abstraction layer. Virtual Machines run from an LV
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(logical volume) device instead of plain files. This reduces the overhead of having a filesystem in
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place and thus it may increase I/O performance.
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Disk images are stored in file format in the Image Datastore and then dumped into an LV when a
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Virtual Machine is created. The image files are transferred to the Host through the SSH protocol.
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Additionally, [LVM Thin]({{% relref "#lvm-thin" %}}) can be enabled to support creating thin
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snapshots of the VM disks.
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## SAN Appliance Configuration
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First of all, you need to configure your SAN appliance to export the LUN(s) where VMs will be
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deployed. Depending on the manufacturer the process may be slightly different, so please refer to
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the specific guides if your hardware is on the supported list, or your hardware vendor guides
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otherwise:
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- [NetApp specific guide]({{% relref "/product/cluster_configuration/san_storage/netapp_-_lvm_thin_validation/" %}})
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- [PureStorage specific guide]({{% relref "/product/cluster_configuration/san_storage/purestorage_-_lvm-thin_validation/" %}})
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Also included in the above guides is a specific multipath configuration for both the front-end and virtualization hosts, which recommended over the more general multipath configuration presented below.
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<a id="hosts-configuration"></a>
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## Hypervisor Configuration
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content/product/cluster_configuration/lvm/lvm.md

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### Hosts LVM Configuration
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Prerequisites:
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Prerequisites:
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* LVM2 must be available on Hosts.
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* `lvmetad` must be disabled. Set this parameter in `/etc/lvm/lvm.conf`: `use_lvmetad = 0`, and disable the `lvm2-lvmetad.service` if running.
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* `oneadmin` needs to belong to the `disk` group.

content/product/cluster_configuration/lvm/netapp_guide.md

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title: "SAN/LVM: NetApp setup"
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linkTitle: "NetApp: SAN setup"
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========
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title: NetApp - LVM-thin Validation
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linkTitle: "LVM Thin - NetApp"
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This setup assumes you are using NetApp ONTAP with iSCSI and are trying to use it as a backend for one of OpenNebula's [LVM datastore options]({{% relref "." %}}). The configuration uses standard volume and host mappings. If you are familiar with the NetApp ONTAP interface and its functionality, create the required resources as desired.

content/product/cluster_configuration/lvm/purestorage_guide.md

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title: "SAN/LVM: PureStorage setup"
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linkTitle: "PureStorage: SAN setup"
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========
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title: PureStorage - LVM-thin Validation
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linkTitle: "LVM Thin - PureStorage"
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This setup assumes you are using a PureStorage FlashArray with iSCSI and want to use it as a backend for one of OpenNebula's [LVM datastore options]({{% relref "." %}}). The configuration uses standard volume and host mappings. If you are familiar with the PureStorage interface, create the required resources as desired.

content/product/cluster_configuration/san_storage/lvm/_index.md

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content/product/cluster_configuration/san_storage/lvm/filemode.md

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