gpfs:gpfs_healthcheck
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A. Objectif
Contrôler l’état d’un filesystem GPFS et rectifier les anomalies
B. Principales entités concernées
Système
C. Description générale et flux des données
D. Définition des termes
Node names
Correspondance GPFS-AIX
GPFS AIX
p5-gpfs-h oragpfh
p5-gpfs-r oragpfr
p5-gpfs-k oragpfk
E. Instructions spécifiques
1) Affichez les informations
mmlsnsd affiche les filesystemes GPFS connues sur la machine. (peut s’exécuter sur les 3 machines)
root@oragpfh:/home/root>mmlsnsd
File system Disk name Primary node Backup node
---------------------------------------------------------------------------
orafs DiskR p5-gpfs-r p5-gpfs-h
orafs DiskH p5-gpfs-r p5-gpfs-h
orafs DiskK gpfs-k
orafs2 DiskR2 p5-gpfs-r p5-gpfs-h
orafs2 DiskH2 p5-gpfs-r p5-gpfs-h
orafs2 DiskK2 gpfs-k
root@oragpfh:/home/root>mmlsnsd -L
L’option –L affiche les NSD volume ID
File system Disk name NSD volume ID Primary node Backup node
--------------------------------------------------------------------------------------------
orafs DiskR 0A040120452A20B4 p5-gpfs-r p5-gpfs-h
orafs DiskH 0A040120452A20B6 p5-gpfs-r p5-gpfs-h
orafs DiskK AC13131D48008499 gpfs-k
orafs2 DiskR2 0A04012046827A9E p5-gpfs-r p5-gpfs-h
orafs2 DiskH2 0A04012046827AA0 p5-gpfs-r p5-gpfs-h
orafs2 DiskK2 AC13131D480084BD gpfs-k
root@oragpfh:/home/root>mmlsnsd -M
L’option –L affiche la correspondance disque GPFS – disque OS/machine
ex : DiskR = hdisk0 sur p5-gpfs-r (primary node)= hdisk3 sur p5-gpfs-h (backup node)
Disk name NSD volume ID Device Node name Remarks
---------------------------------------------------------------------------------------
DiskR 0A040120452A20B4 /dev/hdisk0 p5-gpfs-r primary node
DiskR 0A040120452A20B4 /dev/hdisk3 p5-gpfs-h backup node
DiskH 0A040120452A20B6 /dev/hdisk3 p5-gpfs-r primary node
DiskH 0A040120452A20B6 /dev/hdisk0 p5-gpfs-h backup node
DiskK AC13131D48008499 /dev/descgpfslv gpfs-k primary node
DiskR2 0A04012046827A9E /dev/hdisk4 p5-gpfs-r primary node
DiskR2 0A04012046827A9E /dev/hdisk5 p5-gpfs-h backup node
DiskH2 0A04012046827AA0 /dev/hdisk5 p5-gpfs-r primary node
DiskH2 0A04012046827AA0 /dev/hdisk4 p5-gpfs-h backup node
DiskK2 AC13131D480084BD /dev/descgpfslv2 gpfs-k primary node
mmlsdisk permet d’afficher les disques d’un filesysteme GPFS. (peut s’exécuter sur les 3 machines)
root@oragpfh:/home/root>mmlsdisk orafs
disk driver sector failure holds holds
name type size group metadata data status availability
------------ -------- ------ ------- -------- ----- ------------- ------------
DiskR nsd 512 1 yes yes ready up
DiskH nsd 512 2 yes yes ready up
DiskK nsd 512 3 no no ready up
Le statu normal des disques est ready, la disponibilité est up
En cas d’incohérences, un message d’alerte est affiché après les informations disques !
ex : Attention : Due to an earlier configuration change, the file system
may contain data that is at risk of being lost
Autes commandes :
mmlscluster
root@oragpfh:/home/root>mmlscluster
GPFS cluster information
========================
GPFS cluster name: p5-gpfs-r
GPFS cluster id: 12399281700916488274
GPFS UID domain: p5-gpfs-r
Remote shell command: /usr/bin/ssh
Remote file copy command: /usr/bin/scp
GPFS cluster configuration servers:
-----------------------------------
Primary server: p5-gpfs-r
Secondary server: p5-gpfs-h
Node number Node name IP address Full node name Remarks
-----------------------------------------------------------------------------------
1 p5-gpfs-h 10.11.10.2 p5-gpfs-h quorum node
2 p5-gpfs-r 10.11.10.3 p5-gpfs-r quorum node
3 gpfs-k 10.11.10.4 gpfs-k quorum node
mmlsfs « Fs-name » (Fs-name ={orafs|orafs2}
root@oragpfh:/home/root>mmlsfs orafs
flag value description
---- -------------- -----------------------------------------------------
-s roundRobin Stripe method
-f 8192 Minimum fragment size in bytes
-i 512 Inode size in bytes
-I 16384 Indirect block size in bytes
-m 2 Default number of metadata replicas
-M 2 Maximum number of metadata replicas
-r 2 Default number of data replicas
-R 2 Maximum number of data replicas
-j cluster Block allocation type
-D posix File locking semantics in effect
-k posix ACL semantics in effect
-a 1048576 Estimated average file size
-n 32 Estimated number of nodes that will mount file system
-B 262144 Block size
-Q user;group Quotas enforced
none Default quotas enabled
-F 185344 Maximum number of inodes
-V 8.01 File system version. Highest supported version: 8.02
-u yes Support for large LUNs?
-z no Is DMAPI enabled?
-E yes Exact mtime mount option
-S no Suppress atime mount option
-d DiskR;DiskH;DiskK Disks in file system
-A yes Automatic mount option
-o none Additional mount options
-T /kora Default mount point
2) Réactiver / resynchroniser un disque
Si l’état d’un disque est différent de ready et up, il faut utiliser la commande mmchdisk pour activer le disque et mmrestripefs pour resynchroniser le disque.
Ces commandes mettent un certain temps (jusqu’à 30 minutes). Il est fortement conseiller d’attendre la fin d’une commande avant de lancer la suivante.
Si le disque DiskH est down mmchdisk orafs start -d DiskH
Si le disque DiskH est suspended mmchdisk orafs resume –d DiskH
Si la commande mmlsdisk renseigne des alertes :
Attention : Due to an earlier configuration change, the file system
may contain data that is at risk of being lost
==> mmrestripefs “Fs-name” –r –N mount (Fs-name ={orafs|orafs2})
relancer la commande mmlsdisk “Fs-name” pour conrôler le résultat
Attention : Due to an earlier configuration change, the file system
is no longer properly balanced.
==> mmrestripefs “Fs-name” -b -N mount (Fs-name ={orafs|orafs2})
relancer la commande mmlsdisk “Fs-name” pour conrôler le résultat
gpfs/gpfs_healthcheck.1611736767.txt.gz · Last modified: 2021/01/27 09:39 by manu
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