lsmp

La commande 'lsmp' permet d'afficher les informations sur les groupes de disques miroir d'un groupe de volumes.

Cela est important lorsque vous manipulez des groupes de disques se trouvant sur des baies de stockage séparées.

Ainsi, lorsque vous demandez du miroir, le système sait qu'il doit prendre 2 disques dans des groupes distincts pour protéger de la perte d'une baie.

La syntaxe pour lister est la suivante :

Usage:
lsmp [-L] [-A] [-n DescriptorPhysicalVolume] [-m MirrorPoolName] VGname

Exemple :

# lsmp toolvg

VOLUME GROUP: toolvg Mirror Pool Super Strict: no

#

POur n'afficher que les information d'un groupe de disque dans ce VG, il est possible d'utiliser l'option '-m nom_MP' où 'nom_MP' est le nom du groupe demandé.

Dans le cas ci-dessus, il n'y a pas de groupe défini pour ce groupe de volumes.

ATTENTION, il faut que le groupe de volume soit de type 'Scalable' pour permettre cette fonctionnalité.

Pour modifier un groupe de disques, il faut utiliser la commande 'chmp'.

Purpose

Displays mirror pool information.

Syntax

lsmp [-L] [-A] [-n descriptorphysicalvolume] [-m mirrorpoolname] vgname

Description

The lsmp command displays mirror pool information for a volume group.

Note: The volume group must be varied on to list the mirror pool information. If the volume group is varied off, you must specify the source disk name using the -n flag to list the information.

Flags

Item	Description
-A	Displays information specific to asynchronous mirroring, if it exists.
-L	Specifies no waiting to obtain a lock on the volume group. Note: If the volume group is being changed, using the -L flag gives unreliable data.
-m mirrorpoolname	Displays mirror pool information only for the mirror pool that is specified by the mirrorpoolname parameter. If you do not specify the flag, information for all mirror pools that belong to the volume group is displayed.
-n descriptorphysicalvolume	Accesses information from the descriptor area that is specified by the descriptorphysicalvolume variable. The information might not be current because the information accessed with the -n flag has not been validated for the logical volumes. If you do not use the -n flag, the descriptor area from the physical volume that holds the validated information is accessed, and therefore the current information is displayed. The volume group does not need to be active when you use the -n flag.

Parameters

Item	Description
vgname	Specifies the volume group name.

Examples

To display all mirror pool information for a volume group, enter the following command:

lsmp vg1

The following output is displayed:

VOLUME GROUP:      vg1                  Mirror Pool Super Strict: no

MIRROR POOL:       mp1                  Mirroring Mode:    SYNC
MIRROR POOL:       mp2                  Mirroring Mode:    SYNC

To display all mirror pool information for a volume group and include asynchronous mirroring information in the output, enter the following command:

lsmp -A glvm_vg

The following output is displayed:

VOLUME GROUP:      glvm_vg              Mirror Pool Super Strict: yes

MIRROR POOL:       mp_bvr               Mirroring Mode:    ASYNC
ASYNC MIRROR STATE:  inactive           ASYNC CACHE LV:      mp_pok_lv
ASYNC CACHE VALID:   yes                ASYNC CACHE EMPTY:   yes
ASYNC CACHE HWM:     60                 ASYNC DATA DIVERGED: no

MIRROR POOL:       mp_pok               Mirroring Mode:    ASYNC
ASYNC MIRROR STATE:  active             ASYNC CACHE LV:      bvr_pok_lv
ASYNC CACHE VALID:   yes                ASYNC CACHE EMPTY:   no
ASYNC CACHE HWM:     90                 ASYNC DATA DIVERGED: no

To display information for the mirror pool mp_pok from the glvm_vg volume group and include asynchronous mirroring information in the output, enter the following command:

lsmp -A –m mp_pok glvm_vg

The following output is displayed:

VOLUME GROUP:      glvm_vg              Mirror Pool Super Strict: yes

MIRROR POOL:       mp_pok               Mirroring Mode:    ASYNC
ASYNC MIRROR STATE:  active             ASYNC CACHE LV:      bvr_pok_lv
ASYNC CACHE VALID:   yes                ASYNC CACHE EMPTY:   no
ASYNC CACHE HWM:     90                 ASYNC DATA DIVERGED: no

Parent topic: l

Related information:

chmp command