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Storage
Content types
content types | type | description | path |
---|---|---|---|
Disk image | images | KVM-Qemu VM images (VM disks) | local:230/example-image.raw |
ISO image | iso | local:iso/debian-501-amd64-netinst.iso |
|
Container template | vztmpl | local:vztmpl/debian-5.0-joomla_1.5.9-1_i386.tar.gz |
|
VZDump backup file | backup | ||
Container | roodir | Allow to store container data | |
none | prevent using block device directly for VMs (to create LVM on top) | ||
Snippets | snippets | aka hookscripts (for example guest hook scripts) | <storage>:snippets/<file> |
iscsi-storage:0.0.2.scsi-14f504e46494c4500494b5042546d2d646744372d31616d61
File level storage dir layout
- images - (VM images) -
images/<VMID>/
- raw, qcow2, vmdk
- iso - (ISO images) -
template/iso/
- vztmpl - (Container templates) -
template/cache/
- backup - (Backup files) -
dump/
- snippets - (Snippets) -
snippets/
Default storage for ZFS
- local: file-level storage - you can upload iso images and place backups there.
- local-zfs: this is used to store VM images.
Note: Both resides on the same zfs pool.
- /etc/pve/storage.cfg
dir: local path /var/lib/vz content iso,vztmpl,backup zfspool: local-zfs pool rpool/data sparse 1 content images,rootdir
Storage types
- File level storage
- poll types:
- directory shared: NO
- glusterFS shared: YES
- features
- any POSIX compatible filesystem pointed by path
- no snapshot by FS: VMs with qcow2 are capable to do snapshots
- any content type:
- virtual disk images, containers, templates, ISO images, backup files
- Block level storage
iscsidirect
iSCSI user mode (libiscsi2
)- content types: images
- format: raw, shared: YES, no snapshots, no clones
iscsi
- content types: images, none
- format: raw, shared: YES, no snapshots, no clones
LVM
- possible to create on top of iSCSI LUN to get managable disk space
- content types: images, rootdir
- format: raw, shared: YES, no snapshots, no clones
ZFS over iSCSI
- to use ZFS from remote system using iSCSI- benefits of ZFS:
- for VMs: zfs volume per VM, live snaphots, cloning
- thin provision
ZFS
- local node ZFS
poll type
- Network storage
- LVM Group on iSCSI
- can be shared
- ZFS over iSCSI
- thin provisioning
- iSCSI target / iSCSI direct (user-level library
libiscsi2
) - NFS
- Ceph RDB
- GlusterFS
- Local storage
- LVM Group overy any block device
- LVM Thin pools: only on LOCAL - cannot be shared!
- Directory (storage on existing FS)
- ZFS
Local storage
- Backups - /var/lib/vz/dump
- ISOs - /var/lib/vz/template/iso
- Images - /var/lib/vz/images
- Templates - /var/lib/vz/template/cache
storage for ISOs
By default it is stored in local
storage. It is possible to upload ISOs directly using SCP to /var/lib/vs/template/iso
.