Differences

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--- hypervisor:base:storage [2015/03/03 23:37]
admin [Xen Storage Objects]
+++ hypervisor:base:storage [2015/03/05 12:44]
admin [Delete a Storage Repository]
@@ Line 37: / Line 37: @@
 ----
-----
 ==== 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.
+----
 ===== 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>
-> pvdisplay
+> sudo pvdisplay
   --- 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
   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>
 Along with a volume group:
 <code>
-> vgdisplay
+> sudo vgdisplay
-  --- Volume group ---
-  VG Name               xenvg
+--- Volume group ---
+  VG Name               Xvg0
   System ID
   Format                lvm2
   Metadata Areas        1
-  Metadata Sequence No  22
+  Metadata Sequence No  7
   VG Access             read/write
   VG Status             resizable
   MAX LV                0
-  Cur LV                3
+  Cur LV                1
-  Open LV               3
+  Open LV               1
   Max PV                0
   Cur PV                1
   Act PV                1
-  VG Size               464.83 GiB
+  VG Size               12.82 GiB
   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>
@@ Line 96: / Line 99: @@
 If you do not already have a device to use as repository, create a logical volume on volume group.
 <code>
-> lvcreate --size 30G -n LocalStorage xenvg
+> sudo lvcreate --size 13G -n Xsr0 Xvg0
 </code>
@@ Line 107: / Line 111: @@
 You should see your partition in a line such as:
 <code>
-Disk /dev/mapper/xenvg-LocalStorage: 32.2 GB, 32212254720 bytes
+...
+Disk /dev/mapper/Xvg0-Xsr0: 13.7 GB, 13744734208 bytes
+...
 </code>
 ==== Register the logical volume for use with XAPI ====
 <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>
 This will take a while if the volume is large, it will return the SR UUID.
@@ Line 118: / Line 124: @@
 Display the storage repository:
 <code>
-> xe sr-list name-label='Local Storage'
+> xe sr-list name-label='X-Local-SR'
 </code>
@@ Line 155: / Line 161: @@
 Set the default SR
 <code>
-> xe pool-param-set uuid=<pool-uuid> default-SR=<sr-uuid>
+> xe pool-param-set uuid=<pool_uuid> default-SR=<sr_uuid>
 </code>
 ===== Delete a Storage Repository =====
@@ Line 162: / Line 168: @@
 > xe sr-list
 </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
 . Find the corresponding Physical Block Device (PBD):
 <code>
-> xe pbd-list sr-uuid=your-SR-uuid
+> xe pbd-list sr-uuid=<sr_uuid>
 </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
 . Unplug the PBD:
 <code>
-> xe pbd-unplug uuid=your-PBD-uuid
+> xe pbd-unplug uuid=<pbd_uuid>
 </code>
 . Delete PBD:
 <code>
-> xe pbd-destroy uuid=your-PBD-uuid
+> xe pbd-destroy uuid=<pbd_uuid>
 </code>
 . Delete the association of your SR and the PBD:
 <code>
-> xe sr-forget uuid=your-SR-uuid
+> xe sr-forget uuid=<sr_uuid>
 </code>
-NOTE: at this stage the logical volume will still exist in the LVM partition.
+NOTE: at this stage the logical volume 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 =====