Creating local storage policies

Admin panel

1. On the Compute > Storage > Storage policies tab, click Create storage policy.
2. In the Create storage policy window, specify a policy name and select Local storage cluster.

3. Select a tier, failure domain, and redundancy scheme.

   If the desired encoding mode is not listed, you can create a custom scheme by specifying the number of data fragments and parity fragments used for recovery. For more details, refer to Redundancy modes.

   

4. Enable IOPS limit or Bandwidth limit to set the corresponding limits on the volume.

5. Click Create.

Command-line interface

Use the following command:

vinfra service compute storage-policy create --tier {0,1,2,3} (--replicas <norm>[:<min>] | --encoding <M>+<N>)
                                             --failure-domain {0,1,2,3,4}
                                             [--write-bytes-sec <limit>] [--read-bytes-sec <limit>]
                                             [--read-iops-sec <limit>] [--write-iops-sec <limit>]
                                             [--total-bytes-sec <limit>] [--total-iops-sec <limit>]
                                             <name>

--tier {0,1,2,3}

Storage tier

--encoding <M>+<N>

Storage erasure encoding mapping in the format:

• M: number of data blocks
• N: number of parity blocks

To see a full list of available redundancy schemes, run the vinfra cluster storage-redundancies command.

--failure-domain {0,1,2,3,4}

Storage failure domain

--replicas <norm>[:<min>]

Storage replication mapping in the format:

• norm: number of replicas to maintain
• min: minimum required number of replicas (optional)

--write-bytes-sec <limit>

Number of bytes written per second

--read-bytes-sec <limit>

Number of bytes read per second

--read-iops-sec <limit>

Number of read operations per second

--write-iops-sec <limit>

Number of write operations per second

--total-bytes-sec <bytes>

Total number of bytes per second

--total-iops-sec <iops>

Total number of I/O operations per second

<name>

Storage policy name

For example, to create a storage policy mystorpolicy with the tier 3, erasure coding 3+2 scheme, host failure domain, and the limits of 100 IOPS and 104857600 bytes per second, run:

# vinfra service compute storage-policy create mystorpolicy --tier 3 \
--encoding 3+2 --failure-domain 1 --total-bytes-sec 104857600 --total-iops-sec 100

The created storage policy will appear in the vinfra service compute storage-policy list output:

# vinfra service compute storage-policy list
+-------------+--------------+------+--------------+----------------+--------------------------------+
| id          | name         | tier | redundancy   | failure_domain | qos                            |
+-------------+--------------+------+--------------+----------------+--------------------------------+
| 97b55811<…> | mystorpolicy | 3    | encoding=3+2 | 1              | read_bytes_sec: -1             |
|             |              |      |              |                | read_bytes_sec_per_gb: -1      |
|             |              |      |              |                | read_bytes_sec_per_gb_min: -1  |
|             |              |      |              |                | read_iops_sec: -1              |
|             |              |      |              |                | read_iops_sec_per_gb: -1       |
|             |              |      |              |                | read_iops_sec_per_gb_min: -1   |
|             |              |      |              |                | total_bytes_sec: 104857600     |
|             |              |      |              |                | total_bytes_sec_per_gb: -1     |
|             |              |      |              |                | total_bytes_sec_per_gb_min: -1 |
|             |              |      |              |                | total_iops_sec: 100            |
|             |              |      |              |                | total_iops_sec_per_gb: -1      |
|             |              |      |              |                | total_iops_sec_per_gb_min: -1  |
|             |              |      |              |                | write_bytes_sec: -1            |
|             |              |      |              |                | write_bytes_sec_per_gb: -1     |
|             |              |      |              |                | write_bytes_sec_per_gb_min: -1 |
|             |              |      |              |                | write_iops_sec: -1             |
|             |              |      |              |                | write_iops_sec_per_gb: -1      |
|             |              |      |              |                | write_iops_sec_per_gb_min: -1  |
| 603bd56b<…> | default      | 0    | replicas=3   | 1              | read_bytes_sec: -1             |
|             |              |      |              |                | read_bytes_sec_per_gb: -1      |
|             |              |      |              |                | read_bytes_sec_per_gb_min: -1  |
|             |              |      |              |                | read_iops_sec: -1              |
|             |              |      |              |                | read_iops_sec_per_gb: -1       |
|             |              |      |              |                | read_iops_sec_per_gb_min: -1   |
|             |              |      |              |                | total_bytes_sec: -1            |
|             |              |      |              |                | total_bytes_sec_per_gb: -1     |
|             |              |      |              |                | total_bytes_sec_per_gb_min: -1 |
|             |              |      |              |                | total_iops_sec: -1             |
|             |              |      |              |                | total_iops_sec_per_gb: -1      |
|             |              |      |              |                | total_iops_sec_per_gb_min: -1  |
|             |              |      |              |                | write_bytes_sec: -1            |
|             |              |      |              |                | write_bytes_sec_per_gb: -1     |
|             |              |      |              |                | write_bytes_sec_per_gb_min: -1 |
|             |              |      |              |                | write_iops_sec: -1             |
|             |              |      |              |                | write_iops_sec_per_gb: -1      |
|             |              |      |              |                | write_iops_sec_per_gb_min: -1  |
+-------------+--------------+------+--------------+----------------+--------------------------------+