ceea9dda0d
Applied review feedback. Fixed 'grey bars' formatting. Fixed gerunds and lists Added abbreviations and references Change-Id: I104d678ce3ea52bddcbc141f8aad49ea1e1971db Signed-off-by: Keane Lim <keane.lim@windriver.com>
45 lines
2.1 KiB
ReStructuredText
45 lines
2.1 KiB
ReStructuredText
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.. sgc1552679032825
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.. _disk-naming-conventions:
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=======================
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Disk Naming Conventions
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=======================
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|prod| uses persistent disk names to simplify hardware management.
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In addition to the device node identification commonly used in Linux
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systems \(for example, **/dev/sda**\), |prod| identifies hardware storage
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devices by physical location \(device path\). This ensures that the system
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can always identify a given disk based on its location, even if its device
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node enumeration changes because of a hardware reconfiguration. This helps
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to avoid the need for a system re-installation after a change to the disk
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complement on a host.
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In the Horizon Web interface and in |CLI| output, both identifications are
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shown. For example, the output of the :command:`system host-disk-show`
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command includes both the **device\_node** and the **device\_path**.
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.. code-block:: none
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~(keystone_admin)$ system host-disk-show controller-0 \
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1722b081-8421-4475-a6e8-a26808cae031
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+-------------+--------------------------------------------+
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| Property | Value |
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+-------------+--------------------------------------------+
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| device_node | /dev/sda |
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| device_num | 2048 |
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| device_type | HDD |
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| device_path | /dev/disk/by-path/pci-0000:00:0d.0-ata-2.0 |
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| size_gib | 120 |
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| rpm | Undetermined |
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| serial_id | VB77269fb1-ae169607 |
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| uuid | 1722b081-8421-4475-a6e8-a26808cae031 |
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| ihost_uuid | 78c46728-4108-4b35-8081-bed1bd4cba35 |
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| istor_uuid | None |
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| ipv_uuid | 2a7e7aad-6da5-4a2d-957c-058d37eace1c |
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| created_at | 2017-05-05T07:56:02.969888+00:00 |
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| updated_at | 2017-05-08T12:27:04.437818+00:00 |
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+-------------+--------------------------------------------+
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