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hypervisor:base:storage [2015/03/03 23:37] admin [Xen Storage Objects] |
hypervisor:base:storage [2015/03/05 12:45] (current) admin [Delete a Storage Repository] |
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| ---- | ---- | ||
| - | ---- | ||
| ==== Virtual Disk Data Formats ==== | ==== Virtual Disk Data Formats ==== | ||
| ---- | ---- | ||
| Line 48: | Line 47: | ||
| * **LUN per VDI**; LUNs are directly mapped to VMs as VDIs by SR types that provide an array-specific plugin (Netapp, Equallogic or StorageLink type SRs). The array storage abstraction therefore matches the VDI storage abstraction for environments that manage storage provisioning at an array level. | * **LUN per VDI**; LUNs are directly mapped to VMs as VDIs by SR types that provide an array-specific plugin (Netapp, Equallogic or StorageLink type SRs). The array storage abstraction therefore matches the VDI storage abstraction for environments that manage storage provisioning at an array level. | ||
| + | ---- | ||
| ===== Create a Storage Repository ===== | ===== Create a Storage Repository ===== | ||
| ---- | ---- | ||
| - | If you followed our [[hypervisor:base:debian|Debian Installation]] section, you should already have an LVM partition, thus a physical volume: | + | The following example illustrates the SR creation on a local non-shared Filesystem (ext). |
| + | |||
| + | If you follow the [[sample:base|Sample Configuration]] section of this wiki, you will have a LVM partition, thus a physical volume to use: | ||
| <code> | <code> | ||
| - | > pvdisplay | + | > sudo pvdisplay |
| --- Physical volume --- | --- Physical volume --- | ||
| - | PV Name /dev/sda2 | + | PV Name /dev/sde5 |
| - | VG Name xenvg | + | VG Name Xvg0 |
| - | PV Size 464.83 GiB / not usable 0 | + | PV Size 12.82 GiB / not usable 3.00 MiB |
| Allocatable yes | Allocatable yes | ||
| PE Size 4.00 MiB | PE Size 4.00 MiB | ||
| - | Total PE 118996 | + | Total PE 3282 |
| - | Free PE 112322 | + | Free PE 5 |
| - | Allocated PE 6674 | + | Allocated PE 3277 |
| - | PV UUID 4g97od-AZ1M-8sws-7ghY-YPaT-PsPR-mpO3iy | + | PV UUID sJOaJc-vZzX-1d8O-2R5i-jmi5-Gkj4-S4rxdJ |
| </code> | </code> | ||
| Along with a volume group: | Along with a volume group: | ||
| <code> | <code> | ||
| - | > vgdisplay | + | > sudo vgdisplay |
| - | --- Volume group --- | + | |
| - | VG Name xenvg | + | --- Volume group --- |
| + | VG Name Xvg0 | ||
| System ID | System ID | ||
| Format lvm2 | Format lvm2 | ||
| Metadata Areas 1 | Metadata Areas 1 | ||
| - | Metadata Sequence No 22 | + | Metadata Sequence No 7 |
| VG Access read/write | VG Access read/write | ||
| VG Status resizable | VG Status resizable | ||
| MAX LV 0 | MAX LV 0 | ||
| - | Cur LV 3 | + | Cur LV 1 |
| - | Open LV 3 | + | Open LV 1 |
| Max PV 0 | Max PV 0 | ||
| Cur PV 1 | Cur PV 1 | ||
| Act PV 1 | Act PV 1 | ||
| - | VG Size 464.83 GiB | + | VG Size 12.82 GiB |
| PE Size 4.00 MiB | PE Size 4.00 MiB | ||
| - | Total PE 118996 | + | Total PE 3282 |
| - | Alloc PE / Size 6674 / 26.07 GiB | + | Alloc PE / Size 3277 / 12.80 GiB |
| - | Free PE / Size 112322 / 438.76 GiB | + | Free PE / Size 5 / 20.00 MiB |
| - | VG UUID yf4fNc-5Nke-5SCd-Jqo6-ie9c-gH7r-8dCE66 | + | VG UUID Skt7yP-fl4B-IxvG-VUA4-KcJH-1Mho-2QASh8 |
| </code> | </code> | ||
| Line 96: | Line 99: | ||
| If you do not already have a device to use as repository, create a logical volume on volume group. | If you do not already have a device to use as repository, create a logical volume on volume group. | ||
| + | |||
| <code> | <code> | ||
| - | > lvcreate --size 30G -n LocalStorage xenvg | + | > sudo lvcreate --size 13G -n Xsr0 Xvg0 |
| </code> | </code> | ||
| Line 107: | Line 111: | ||
| You should see your partition in a line such as: | You should see your partition in a line such as: | ||
| <code> | <code> | ||
| - | Disk /dev/mapper/xenvg-LocalStorage: 32.2 GB, 32212254720 bytes | + | ... |
| + | Disk /dev/mapper/Xvg0-Xsr0: 13.7 GB, 13744734208 bytes | ||
| + | ... | ||
| </code> | </code> | ||
| ==== Register the logical volume for use with XAPI ==== | ==== Register the logical volume for use with XAPI ==== | ||
| <code> | <code> | ||
| - | > xe sr-create type=ext name-label='Local Storage' device-config:device=/dev/mapper/xenvg-LocalStorage | + | > xe sr-create type=ext name-label='X-Local-SR' device-config:device=/dev/mapper/Xvg0-Xsr0 |
| </code> | </code> | ||
| This will take a while if the volume is large, it will return the SR UUID. | This will take a while if the volume is large, it will return the SR UUID. | ||
| Line 118: | Line 124: | ||
| Display the storage repository: | Display the storage repository: | ||
| <code> | <code> | ||
| - | > xe sr-list name-label='Local Storage' | + | > xe sr-list name-label='X-Local-SR' |
| </code> | </code> | ||
| Line 155: | Line 161: | ||
| Set the default SR | Set the default SR | ||
| <code> | <code> | ||
| - | > xe pool-param-set uuid=<pool-uuid> default-SR=<sr-uuid> | + | > xe pool-param-set uuid=<pool_uuid> default-SR=<sr_uuid> |
| </code> | </code> | ||
| ===== Delete a Storage Repository ===== | ===== Delete a Storage Repository ===== | ||
| Line 162: | Line 168: | ||
| > xe sr-list | > xe sr-list | ||
| </code> | </code> | ||
| - | -> write down / take note of SR-UUID of the SR to delete | + | -> Copy / write down / take note of SR-UUID of the SR to delete |
| 2. Find the corresponding Physical Block Device (PBD): | 2. Find the corresponding Physical Block Device (PBD): | ||
| <code> | <code> | ||
| - | > xe pbd-list sr-uuid=your-SR-uuid | + | > xe pbd-list sr-uuid=<sr_uuid> |
| </code> | </code> | ||
| - | -> write down / take note of PBD-UUID of the PBD to unplug and delete | + | -> Copy / write down / take note of PBD-UUID of the PBD to unplug and delete |
| 3. Unplug the PBD: | 3. Unplug the PBD: | ||
| <code> | <code> | ||
| - | > xe pbd-unplug uuid=your-PBD-uuid | + | > xe pbd-unplug uuid=<pbd_uuid> |
| </code> | </code> | ||
| 4. Delete PBD: | 4. Delete PBD: | ||
| <code> | <code> | ||
| - | > xe pbd-destroy uuid=your-PBD-uuid | + | > xe pbd-destroy uuid=<pbd_uuid> |
| </code> | </code> | ||
| 5. Delete the association of your SR and the PBD: | 5. Delete the association of your SR and the PBD: | ||
| <code> | <code> | ||
| - | > xe sr-forget uuid=your-SR-uuid | + | > xe sr-forget uuid=<sr_uuid> |
| </code> | </code> | ||
| - | NOTE: at this stage the logical volume will still exist in the LVM partition. | + | NOTE: at this stage the SR data will still exist in the LVM partition, you could also use the //**xe sr-destroy**// command to totally wipe out the SR, loosing everything that was on it! |
| ===== Using NFS ===== | ===== Using NFS ===== | ||
