storops 1.0.0

Python API for VNX and Unity.

VERSION: 1.0.0

A minimalist Python library to manage VNX/Unity systems. This document lies in the source code and go with the release. Check different release branch/tag for matched documents.

License

Apache License version 2

Install via PIP

You could use “pip” to install “storops”.

$ pip install storops

Make sure naviseccli is installed if you want to manage VNX. Please contact with Dell/EMC support about installing the NaviCli-Linux rpm package.

Optional package requirement

1. paramiko package

The paramiko is required if you need to manage the VNX file related resources. please follow install paramiko install paramiko.

Install via RPM

There are two RPM packages in each release page. - python-storops-<version num>, install this if you only manage Unity systems. - python-storops-vnx-<version num>-x86_64, a virtual package depends on python-storops and NaviCli-Linux. Install this if you manage VNX systems or both.

You could download the rpm package from release download page, and install it via:

$ rpm -i <python-storops_file>

Please contact with Dell/EMC support about installing the NaviCli-Linux rpm package.

Feature List

• Manage VNX System

  • supported resources

    • show system properties

    • list installed features

    • list/create/delete storage pools

    • list/create/delete pool based LUN

    • list/create/delete RAID groups

    • list/create/delete snapshots

    • list/create/delete storage groups

    • list/create/delete consistency groups

    • list/create/delete users

    • list disks

    • list ports

    • list data mover/virtual data mover

    • list NAS storage pool

    • list/create/delete CIFS server

    • list CIFS share

    • list/create/delete file system

    • list/create/delete file system snap

    • list/create/delete NFS share

    • show system domain information

    • list hosts

    • show system capacity

  • supported feature/operations

    • list/start/cancel migration sessions

    • enable/disable LUN deduplication

    • enable/disable LUN compression

    • insert/delete disk simulation

    • create/attach/detach mount points

    • initiator and connection management

    • create/delete mirror view

    • create/delete DNS

  • supported metrics

    • VNXStorageProcessor

      • read/write/total IOPS

      • read/write/total MBPS

      • read/write size KB

    • VNXLun

      • read/write/total IOPS

        • read/write IOPS of SPA

        • read/write IOPS of SPB

      • read/write/total MBPS

        • read/write MBPS of SPA

        • read/write MBPS of SPB

      • implicit/explicit trespasses per second

        • implicit/explicit trespasses per second of SPA

        • implicit/explicit trespasses per second of SPB

      • utilization

        • utilization of SPA

        • utilization of SPB

      • read/write size KB

    • VNXDisk

      • read/write/total IOPS

      • read/write/total MBPS

      • utilization

      • read/write size KB

    • VNXSPPort

      • read/write/total IOPS

      • read/write/total MBPS

      • read/write size KB

    • VNXStorageGroup

      • read/write/total IOPS

      • read/write/total MBPS

      • read/write size KB

    • VNXStoragePool

      • read/write/total IOPS

      • read/write/total MBPS

      • read/write size KB

• Manage Unity System

  • supported resources

    • show system properties

    • show system capacity

    • list/create/delete storage pools

    • list/create/delete remote hosts

    • list/create/delete host initiator

    • list/create/delete luns

    • list/create/delete file systems

    • list/create/delete snapshots

    • list/create/delete NAS servers

    • list/create/delete CIFS servers

    • list/create/delete CIFS shares

    • list/create/delete NFS servers

    • list/create/delete NFS shares

    • list/create/delete DNS servers

    • list ip ports

    • list sas ports

    • list/create/delete iSCSI portals

    • list/create/delete link aggregations

    • list/create/delete Consistency Groups

    • list/create/delete metric real time query

    • list metrics query result

    • list disks

    • list disk groups

    • list/create/delete tenants

    • list batteries

    • list daes

    • list fans

    • list memory modules

    • list management interfaces

    • list power supplies

    • list ssds

  • supported feature/operations

    • CIFS share access control

    • NFS share access control

    • Remote hosts access

    • Persist historical metric data to csv files

    • Upload license

    • enable/disable LUN data reduction

  • supported metrics

    • system

      • read/write/total IOPS

      • read/write/total bandwidth

    • disk

      • read/write/total IOPS

      • read/write/total bandwidth

      • utilization

      • response time

      • queue length

    • lun

      • read/write/total IOPS

      • read/write/total bandwidth

      • utilization

      • response time

      • queue length

    • filesystem

      • read/write IOPS

      • read/write bandwidth

    • storage processor

      • net in/out bandwidth

      • block read/write/total IOPS

      • block read/write/total bandwidth

      • CIFS read/write IOPS

      • CIFS read/write bandwidth

      • NFS read/write IOPS

      • NFS read/write bandwidth

      • utilization

      • block cache read/write hit ratio

      • block cache dirty size

      • fast cache read/write hits

      • fast cache read/write hit rate

    • fc port

      • read/write/total IOPS

      • read/write/total bandwidth

    • iscsi node

      • read/write/total IOPS

      • read/write/total bandwidth

Tutorial

User may reference three kinds of classes directly. All of them are available under the storops module.

• system classes: like VNXSystem and UnitySystem

• exceptions: like UnityException, VNXException, etc.

• enums: like VNXProvisionEnum, NFSTypeEnum, etc.

We recommend to try the library with IPython notebook or shell.

All operation/resource are accessed from the system instance.

Here are some examples of the typical usage:

Get the VNX System Instance

Use the vnx instance to access all sorts of resource and features.

# initialize the VNX system instance
>>> from storops import VNXSystem
>>> vnx = VNXSystem('10.1.1.1', 'sysadmin', 'password')
>>> vnx
{
    "VNXSystem": {
        "existed": true,
        "hash": 5339308,
        "name": "K10",
        "agent_rev": "7.33.8 (2.97)",
        "model_type": "Rackmount",
        "model": "VNX5800",
        "serial": "APM00123456789",
        "revision": "05.33.008.3.297"
    }
}

Get the Unity System Instance

from storops import UnitySystem
unity = UnitySystem('<management ip>', '<user>', '<password>')

Get Resources from System or Other Resources

# get all pools
>>> pools = vnx.get_pool()
{
"VNXPoolList": [
    {
        "VNXPool": {
            "luns": [
                1,
                0
            ],
            "status": "OK(0x0)",
            "current_operation_status": "N/A",
            ...
            "disks": {
                "VNXDiskList": [
                    {
                        "VNXDisk": {
                            "private": {},
                            "clariion_tla_part_number": "005050344PWR",
                            "prct_bound": {},
...

Get a Resource

Attention: you could still initialize the python object even if the resource doesn’t exists on array. You could use the “existed” property to check the existance of the resource.

# get a existing LUN
>>> lun = vnx.get_lun(lun_id=1)
>>> lun
{
    "VNXLun": {
        "status": "OK(0x0)",
        "existed": true,
        ...
        "default_owner": "VNXSPEnum.SP_B",
        "name": "l0"
    }
}

# get a non-existing lun
>>> vnx.get_lun(name='hello')
{
    "VNXLun": {
        "existed": false,
        "hash": 5699430
    }
}

Access Resource Properties

Each properties printed in the json output could be accessed directly.

# access resource properties
>>> lun.status
u'OK(0x0)'

Update the Resource Property

All properties of a resource will be updated if any of them is accessed. For performance concern, the lib won’t send query to array once properties are initialized. Explicitly call the “update()” function if you need a refresh.

>>> vnx = VNXSystem('10.1.1.3')     # no query to the system
>>> vnx.model
u'VNX5800'                          # send query, initialize all properties
>>> vnx.name
u'k10'                              # no query
>>> vnx.update()                    # send query, update all properties

Executing Operations

Most of the create/modify operations can be found on the instance. Call these instance methods to execute the operation.

# create lun
>>> pool = pools[0]
>>> lun1 = pool.create_lun('lun1', size_gb=2)

Remove a Resource

# delete a resource
>>> lun1.delete()

Getting Help

• If you are using IPython, use “?” to check the document and method signature.

>>> pool.create_lun?
Signature: pool.create_lun(lun_name=None, size_gb=1, lun_id=None,
           provision=None, tier=None, ignore_thresholds=None)
Docstring: Create a pool LUN in the pool.
File:      c:\work\python\storops\storops\vnx\resource\block_pool.py
Type:      instancemethod

• In IPython, use tab to check all extrinsic methods/properties of the resource. Print the resource to check all intrinsic properties.

>>> vnx.
vnx.control_station_ip           vnx.get_property_key             vnx.parse_all
vnx.create_cg                    vnx.get_property_label           vnx.parsed_resource
vnx.create_pool                  vnx.get_rg                       vnx.poll
vnx.create_rg                    vnx.get_sg                       vnx.property_names
vnx.create_sg                    vnx.get_snap                     vnx.delete_cg
vnx.domain                       vnx.get_sp_port                  vnx.delete_disk
vnx.existed                      vnx.heartbeat                    vnx.delete_pool
vnx.get_available_disks          vnx.install_disk                 vnx.delete_rg
vnx.get_cg                       vnx.is_auto_tiering_enabled      vnx.delete_sg
vnx.get_connection_port          vnx.is_compression_enabled       vnx.delete_snap
vnx.get_dict_repr                vnx.is_dedup_enabled             vnx.set_block_credential
vnx.get_disk                     vnx.is_fast_cache_enabled        vnx.set_cli
vnx.get_fc_port                  vnx.is_mirror_view_async_enabled vnx.set_naviseccli
vnx.get_fcoe_port                vnx.is_mirror_view_enabled       vnx.spa_ip
vnx.get_index                    vnx.is_mirror_view_sync_enabled  vnx.spb_ip
vnx.get_iscsi_port               vnx.is_sancopy_enabled           vnx.stop_heart_beat
vnx.get_lun                      vnx.is_snap_enabled              vnx.update
vnx.get_migration_session        vnx.is_thin_enabled              vnx.update_nodes_ip
vnx.get_ndu                      vnx.is_valid                     vnx.with_no_poll
vnx.get_pool                     vnx.json                         vnx.with_poll
vnx.get_pool_feature             vnx.parse

How to Run Unittests

Unittests are included in the storops_test package.

Use following command to install test dependencies.

$ pip install -r test-requirements.txt

Use pytest to run the tests.

$ pytest storops_test

Or you could use tox to run the tests.

$ tox -e py36

How to Contribute

1. Open an issue at the GitHub storops project.

2. Fork the repository on GitHub and make changes on your branch.

3. Add tests to cover your change.

4. Send a pull request.

5. Make sure to add yourself to “Contributors” listed below.

Contributors

EMC Contributors

• Cedric Zhuang <[e-mail]>

• Jay Xu <[e-mail]>

• Ray Chen <[e-mail]>

• Tina Tang <[e-mail]>

• Ryan Liang <[e-mail]>

• Wang Peter <[e-mail]>

Community Contributors

• Paulo Matias <[e-mail]>

Patches and Suggestions