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Select:  VNX Command Line Interface (CLI) Reference for Block  1.0 A02

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mirror -async -info

Displays general information about asynchronous mirroring in a system.

PREREQUISITES

You must have a user account on the system on which you want to execute the command.

DESCRIPTION

This command, when used with naviseccli and no other switches, lists all general

information for asynchronous mirror support. Issuing this command with one or more

options displays the information based on the option issued. See the example for sample

• output.

SYNTAX

mirror -async -info [-cancreate]

[-maxmirrors]

[-maxremoteimages]

[-mirroredluns]

[-mirrorableluns]

[-systems [-connectiontype]]

[-all]

OPTIONS

-cancreate

Indicates whether an asynchronous mirror can be created in this system: yes or no.

-maxmirrors

Displays the maximum number of mirrors that can be created in this system.

-maxremoteimages

Specifies the maximum number of secondary images allowed. A maximum of one image

is allowed.

-mirroredluns

Lists the LUN numbers of LUNs that are mirrored in this system. The list includes LUNs

used as both secondary and primary images.

-mirrorableluns

Lists LUNs that can be mirrored in this system but are not mirrored at present.

752 EMC VNX Command Line Interface (CLI) Reference for Block

EMC VNX MirrorView/A CLI

-systems

Lists remote systems that can be used for a secondary image.

-connectiontype

Displays the connection type (fibre or iSCSI) for the enabled mirror. For unexpected

error cases, it displays the value, unknown.

-all

Lists all properties of a session without having to type in any other switch.

EXAMPLE # 1

For SP ss1_spa, this command displays potential and current remote mirror information.

naviseccli -h ss1_spa mirror -async -info

Can a mirror be created on this system:YES

Maximum number of remote images: 1 Logical

Units that are mirrored in Primary Images:128 5

Logical Units that are mirrored in Secondary Images:0

Logical Units that can be mirrored:1 2 3 4 10 11 12 13

14 21 22 58 59

Remote systems that can be enabled for mirroring:

Array UID: 50:06:01:60:90:20:27:47

Status: Enabled on both SPs Enabled Connection

Type(s): iSCSI Disabled Connection Type(s): Fibre Maximum

Number of possible Mirrors: 100

EXAMPLE # 2

The following example shows the output for the mirror -async -info command for the

VNX5300 Block and VNX5500 Block systems.

mirror –async –info –all

mirror -async -list

Displays information about existing asynchronous mirrors.

PREREQUISITES

You must have a user account on the system on which you want to execute the command.

DESCRIPTION

The naviseccli -async mirror command with -list and no other switches lists all

information for all mirrors on the system. Issuing this command with one or more options

displays the information based on the option(s) issued. You can direct the command to any

system; however, only the system holding the primary image of a mirror will always have

the latest information about the mirror. Status obtained from other systems may be stale;

do not use it unless the primary system is unavailable. See the example for sample output.

SYNTAX

mirror -async -list [-name [[name]] [-mirroruid] [uid]

[-description]

[-faulted]

[-images]

[-imagecount]

[-imagesize]

[-lun]

[-ownergroupuid]

[-ownergroupname]

[-requiredimages]

[-state]

[-timestamp]

[-transition]

OPTIONS

-name name

Specifies the name you gave the mirror with the -create function. You can use the

mirror name or unique ID to obtain information on a mirror.

-mirroruid uid

Specifies the unique 16-byte remote mirror ID (World Wide Name) the software assigned

when it created the mirror.

MirrorView/A remote mirroring commands 755

EMC VNX MirrorView/A CLI

-description

Lists the meaningful title for the mirror, if any. The software does not use the description

to identify the mirror.

-faulted

Lists whether the remote mirror is faulted: yes or no. If it is faulted, the mirror is either

fractured or in the attention state.

-images

Displays image information, such as the role of the image (primary or secondary), image

ID, WWN of the LUN containing the image, recovery policy, sync rate, image state,

image condition, and image transitioning. It also displays the update type (Manual,

Time elapsed since the start of last update, and Time elapsed since the end of the last

update), the update period in minutes (displays N/A where not applicable), the time in

minutes since the last update, the time in minutes until the next update, the last image

error (why the image is faulted; displays the Not Available if no error).

-imagecount

Lists the current number of images that compose the mirror. This count includes the

primary image.

-imagesize

Lists the size of the image (capacity of the LUN containing the image) in user blocks.

-lun

Lists the LUN number of the local image.

-ownergroupuid

Lists the unique ID value of the consistency group of which the mirror is a member.

-ownergroupname

Lists the unique name of the consistency group of which the mirror is a member.

-requiredimages

Lists the minimum number of secondary images required for the mirror.

-state

Describes the operational state of the mirror. Values are: active and attention.

-timestamp

Returns the clock time when the last update started.

756 EMC VNX Command Line Interface (CLI) Reference for Block

EMC VNX MirrorView/A CLI

-transition

Specifies whether the mirror is in a changing state.

EXAMPLE

naviseccli -h ss1_spa mirror -async -list

MirrorView Name: pbc async ml 80

MirrorView Description:

MirrorView UID:

54:33:20:90:60:01:06:50:03:00:00:00:00:00:00:00

Logical Unit Numbers: 80

Remote Mirror Status: Mirrored

MirrorView State: Active

MirrorView Faulted: NO

MirrorView Transitioning: NO

Minimum number of images required: 0

Image Size: 409600

Image Count: 2

Images:

Image UID: 50:06:01:60:90:20:33:54

Is Image Primary: YES

Logical Unit UID:

60:06:01:60:2F:E7:0C:00:3C:5B:04:A2:50:4C:D8:11

Image Condition: Unknown Image Condition

Image UID: 50:06:01:60:90:20:29:85

Is Image Primary: NO

Logical Unit UID: 60:06:01:60:3F:E1:0D:00:A4:C9:01:63:B6:4C:D8:11

Image State: Synchronized

Image Condition: Normal

Recovery Policy: Automatic

Synchronization Rate: Medium

Image Faulted: NO

Image Transitioning: NO

Synchronizing Progress(%): 0

Update Type: Manual

Time in secs since previous update: 12550

Time in secs until next update: Not Available

OUTPUT

If the version of FLARE software running on the SP does not support this command, a

Command is not supported error message is printed to stdout. You may also receive

other error messages.

MirrorView

thanks for the answer, i am doing synchronous mirroring and this seems to be about asynchronous mirroring, does the same commands work for checking synchronous mirroring?

BR

Ingvar