Creating a Logical Drive (createld)

Atlas 900 Compute Node iBMC (V3.01.00.00 or Later) User Guide 09

Rate and give feedback:

Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).

Function

The createld command is used to create a logical drive from an idle physical disk.

Format

ipmcset -t storage -d createld -v <control_id> -rl <raidlevel> -pd <pd_id> [-cachecade] [-sc <span_num>] [-name <ldname>] [-size <capative>{m|g|t} ] [-ss <stripesize>] [-rp <rpvalue>] [-wp <wpvalue>] [-iop <iopvalue>] [-ap <apvalue>] [-dcp <dcpvalue>] [-init <initmode>]

Parameters

Parameter	Description	Value
control_id	Specifies the ID of the RAID controller.	0 to 255
raidlevel	Specifies the RAID level of the logical drive.	r0: RAID 0 r1: RAID 1 r5: RAID 5 r6: RAID 6 r10: RAID 10 r50: RAID 50 r60: RAID 60 NOTE: If the command contains -cachecade, this parameter must be r0 or r1.
pd_id	Specifies the member disk IDs of the logical drive.	Use a comma (,) to separate multiple disk IDs, for example, 0,1,2. NOTE: If the command contains -cachecade, the member disks must be SSDs.
span_num	Specifies the number of spans of the logical drive.	You do not need to set this parameter if the RAID level is 0, 1, 5 or 6. Set this parameter if the RAID level is 10, 50, or 60. The default value is 2. NOTE: If the command contains -cachecade, this parameter is invalid.
ldname	Specifies the name of the logical drive to be created.	The parameter value cannot exceed 15 characters.
capative	Specifies the capacity of the logical drive to be created.	The capacity unit can be: m: MB g: GB t: TB NOTE: If the command contains -cachecade, this parameter is invalid. If the command does not contain -cachecade and this parameter is not set, the system sets the logical drive capacity based on the maximum capacity of the member drive.
stripesize	Specifies the stripe size (in bytes) of the logical drive.	The stripe size can be: 64K 128K 256K 512K 1M NOTE: If the command contains -cachecade, this parameter is invalid. The default strip size of the logical drive is 1M. If the command does not contain -cachecade and this parameter is not set, the default stripe size of the logical drive is 256K.
rpvalue	Specifies the read policy of the logical drive.	ra: sets the read policy of the logical drives to Read Ahead. nra: sets the read policy of the logical drives to No Read Ahead. NOTE: If the command contains -cachecade, this parameter is invalid. The default read policy of the logical drives is nra. If the command does not contain -cachecade and this parameter is not set, the default read policy of the logical drives is ra.
wpvalue	Specifies the write policy of the logical drive.	wt: sets the write policy of the logical drives to Write Through. wb: sets the write policy of the logical drives to Write Back. wbwithbbu: sets the write policy of the logical drives to Write Back with BBU. The default value is wbwithbbu.
iopvalue	Specifies the IO policy of the logical drive.	cio: sets the I/O policy of the logical drives to Cached IO. dio: sets the I/O policy of the logical drives to Direct IO. The default value is dio. NOTE: If the command contains -cachecade, this parameter is invalid.
apvalue	Specifies the access policy of the logical drive.	rw: sets the access policy of the logical drives to read/write. ro: sets the access policy of the logical drives to read-only. blocked: sets the access policy of the logical drives to blocked. The default value is rw. NOTE: If the command contains -cachecade, this parameter is invalid.
dcpvalue	Specifies the cache policy of the logical drive.	enabled: enables cache for logical drives. disabled: disables cache for logical drives. default: uses the default policy, which is determined by the cache policy of the member drives. NOTE: If the command contains -cachecade, this parameter is invalid. The default drive cache policy of the logical drives is default. If the command does not contain -cachecade and this parameter is not set, the default drive cache policy of the logical drives is enabled.
initmode	Specifies the initialization mode of the logical drive.	no: no initialization. quick: performs a quick initialization. full: performs a full initialization. The default value is no. NOTE: If the command contains -cachecade, this parameter is invalid.

Usage Guidelines

If the command contains -cachecade, a CacheCade drive is to be created.

This command can be used only when the following conditions is met:

The RAID controller card supports iBMC out-of-band management. You can refer to the Technical Specifications section in the RAID controller card user guide to determined whether the RAID card supports the iBMC out-of-band management.

Example

# Create a common logical drive under RAID controller 0.

iBMC:/-> ipmcset -t storage -d createld -v 0 -rl r1 -pd 0,1 -name example -size 100g -ss 512k -rp ra -wp wb -ap rw -iop cio -dcp enabled -init quick
WARNING: The operation may have many adverse effects. 
Do you want to continue?[Y/N]:y

# Create a Cachecade drive under RAID controller 0.

iBMC:/-> ipmcset -t storage -d createld -v 0 -rl r0 -pd 0,1,2 -name cachecade -cachecade -wp wb
WARNING: The operation may have many adverse effects. 
 Do you want to continue?[Y/N]:y

Function
Format
Parameters
Usage Guidelines
Example

Translation

简体中文

Download

Updated: 2023-08-04

Document ID: EDOC1100152759

Downloads: 101

Average rating:

This Document Applies to these Products

Related Version

Digital Signature File

Digital Signature Authentication Mode

Enterprise

Huawei Cloud

Carrier

Consumer

Corporate