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Working with Virtual LUNs, VLUN Configuration and Enumeration Objects

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7 Working with Virtual LUNs This chapter describes the API operations you can perform on virtual logical unit numbers (VLUNs). A VLUN is a pairing between a virtual volume (VV) and a logical unit number (LUN), expressed as either a VLUN template or an active VLUN. A VLUN template sets up an association between a VV and one of the following combinations by establishing the export rule, the manner in which the volume is exported. If, when a VLUN template is created, the current system state meets the conditions established by the template, then active VLUNs-for example, exports that are seen as LUNs by the host-are the result. Depending on the conditions of the VLUN template, a single template can produce more than one active VLUN. The sections that follow describe the APIs to perform VLUN operations. VLUN Configuration and Enumeration Objects Several enumerations and configuration objects are used for managing VLUNs. These configuration objects are defined in this section. VLUN portPos Configuration Object The API server communicates port position as a portPos object, as defined in Table 64 (page 68). Table 64 VLUN portPos JSON Objects Members node slot cardPort JSON Type number number number API Type igint32 igint32 igint32 Description System node (0-7). PCI bus slot in the node (0-5). Port number on the FC card (0-4). VLUNtype Enumeration This component enumerates the type of VLUNs (VLUNType) assigned in the system, as defined in Table 65 (page 68). Table 65 VLUNType Enumeration Symbol EMPTY PORT HOST MATCHED_SET HOST_SET Value 1 2 3 4 5 Description Empty. Port. Host. Matched set. Host set. VLUN multipathing Enumeration The API server will communicate the multipathing configuration, enumerated as shown in Table 66 (page 69). 68 Working with Virtual LUNs

Section	Page
HP 3PAR Web Services API 1.2 Developer's Guide	1
Contents	3
1 Introduction	9
About the WSAPI	9
Getting Started	9
Starting and Configuring the Server	9
About the SDK	9
Java SDK	10
Perl SDK	10
2 Accessing the WSAPI	11
Overview	11
Protocol and Message Format	12
Client HTTP Headers	12
Server HTTP Headers	13
Supported HTTP Methods	14
General URI Format	14
System Access	14
Creating Credentials	14
About Multiple Session Keys	14
About Session Key Security	15
Creating a Session Key	15
Using a Session Key	15
Deleting a Session Key	16
Session Key Deletion Success	16
Session Key Deletion Errors	16
HTTP Status and Error Codes	16
The code Member	16
The desc Member	24
The ref Member	25
HTTP Error Codes	25
Request Input and Optional Members	25
Null Members	26
Enumerations	26
JSON Types and API Types	27
3 Working with Common Provisioning Groups	29
CPG Enumeration and Configuration Objects	29
CPG LDLayout JSON Objects	29
CPG RAIDType Enumeration	29
CPG HA Enumeration	30
CPG chunkletPosPref Enumeration	30
CPG diskPatterns JSON Object	30
CPG diskType Enumeration	31
CPG Space Usage Objects	32
Growth Objects	32
CPG state Enumeration	32
CPG detailedState Enumeration	32
Creating a CPG	33
CPG Creation Success	33
CPG Creation Errors	34
Modifying a CPG	34
CPG Modification Success	35
CPG Modification Errors	35
Removing a CPG	35
CPG Removal Success	35
CPG Removal Errors	35
Querying CPG Information	36
Querying All CPGs	36
CPG Query Success	37
CPG Query Errors	37
Querying a Single CPG	37
Single-CPG Query Success	37
Single-CPG Query Errors	37
4 Working with Storage Volumes	38
Volume Enumeration and Configuration Objects	38
Volume provisioningType Enumeration Types	38
Volume CopyType Enumeration Types	38
Volume state Enumeration Types	38
Volume DetailedState Enumeration Types	39
Volume policies Configuration Object	40
Volume Space Objects	40
Creating a Storage Volume	41
Creating Base Volumes	41
Creating Snapshot Volumes	42
Volume Creation Success	43
Volume Creation Errors	43
Modifying a Virtual Volume	44
Volume Modification Success	46
Volume Modification Errors	46
Removing a Storage Volume	48
Storage Volume Removal Success	48
Storage Volume Removal Errors	48
Querying Volume Information	48
Querying All Volumes	48
All-Volumes Query Success	48
All-volumes Query Errors	50
Querying a Single Volume	50
Single-volume Query Success	50
Single-volume Query Errors	50
5 Working with Hosts	52
Creating a Host	52
Host Creation Success	52
Host Creation Errors	53
Modifying a Host	54
Host Modification Success	56
Host Modification Errors	56
Removing a Host	58
Host Removal Success	58
Host Removal Errors	58
Querying Hosts	58
Host Query Success	58
Host Query Errors	62
6 Working with Ports	63
Port Configuration and Enumeration Objects	63
Querying All Ports	65
All-ports Query Success	65
All-ports Query Errors	67
Querying A Single Port	67
Single-port Query Success	67
Single-port Query Errors	67
7 Working with Virtual LUNs	68
VLUN Configuration and Enumeration Objects	68
VLUN portPos Configuration Object	68
VLUNtype Enumeration	68
VLUN multipathing Enumeration	68
VLUN failedPathPol Enumeration	69
Creating a VLUN	69
VLUN Creation Success	70
VLUN Creation Errors	70
VLUN Creation Example	71
HTTP Request	71
HTTP Response	72
Removing a VLUN	72
VLUN Removal Success	72
VLUN Removal Errors	72
VLUN Removal Example	73
HTTP Request	73
HTTP Response	73
Querying VLUNs	73
Querying All VLUNs	73
All-VLUNs Query Success	73
All-VLUNs Query Example	75
All-VLUNs Query Errors	75
Querying a Single VLUN	76
Single-VLUN Query Success	76
Single-VLUN Query Errors	77
8 Getting Storage System and Version Information	79
Getting Storage System Information	79
Storage-system Query Success	79
Storage-system Query Errors	80
Getting Version Information	80
Version Information Query Success	80
Version Information Query Errors	80
9 Querying Available Space	81
Querying Overall System Capacity	81
Overall System Capacity Success	81
Overall Available Space Query Errors	84
Querying Available Space for a CPG or LDLayout Object	84
CPG Space Query Members	84
LDLayout Object Space Query Members	84
Space Query Success	84
Space Query Errors	85
10 Support and Other Resources	86
Contacting HP	86
HP 3PAR documentation	86
Typographic conventions	89
HP 3PAR branding information	89
11 Documentation feedback	90