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Ephemeral and Root Disk

 

 

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alex.vitola at gmail

Jan 25, 2013, 4:29 AM

Post #1 of 1 (197 views)
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Ephemeral and Root Disk

When I install a virtual machine using one of the following flavor's
device /dev/vda (Ubuntu or Redhat)is created in the Ephemeral.

That this correct? should not be at the Root?

By default the value is 0 Ephemeral, but had to switch to 5G. If he
does not think to 0 no disc.

Note: Instance created by dashboard

+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+-------------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs |
RXTX_Factor | Is_Public | extra_specs |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+-------------+
| 1 | m1.tiny | 512 | 0 | 5 | | 1 | 1.0
| True | {} |
| 2 | m1.small | 2048 | 20 | 5 | | 1 | 1.0
| True | {} |
| 3 | m1.medium | 4096 | 40 | 5 | | 2 | 1.0
| True | {} |
| 4 | m1.large | 8192 | 80 | 5 | | 4 | 1.0
| True | {} |
| 5 | m1.xlarge | 16384 | 160 | 5 | | 8 | 1.0
| True | {} |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+-------------+

My Libvirt.xml

--Ephemeral Disk /dev/vdb --
<disk type="file" device="disk">
<driver name="qemu" type="qcow2" cache="none"/>
<source file="/var/lib/nova/instances/instance-00000013/disk.local"/>
<target bus="virtio" dev="vdb"/>
</disk>

-- Volume Disk /dev/vda --
<disk type="block" device="disk">
<driver name="qemu" type="raw" cache="none"/>
<source dev="/dev/disk/by-path/ip-172.16.100.200:3260-iscsi-iqn.2010-10.org.openstack:volume-df925bb786ef-lun-0"/>
<target bus="virtio" dev="sda"/>
</disk>

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