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|Oracle Solaris Cluster System Administration Guide Oracle Solaris Cluster|
This section contains troubleshooting procedures that you can use for testing purposes.
Use this procedure to run an application outside the global cluster for testing purposes.
phys-schost# clquorum show
phys-schost# clquorum add did
phys-schost# clqorum remove did
To learn how to run the pgre commands, you need to install and use the Diagnostic Toolkit (SUNWscdtk) package provided by Oracle Support.
phys-schost# clresourcegroup evacuate -n targetnode
phys-schost# clresourcegroup offline resourcegroupname
phys-schost# clresource disable resourcename
phys-schost# clresourcegroup unmanage resourcegroupname
phys-schost# cldevicegroup offline devicegroupname
phys-schost# cldevicegroup disable devicegroupname
phys-schost# reboot -x
phys-schost# svcs -x
phys-schost# /usr/cluster/lib/sc/scsi -c inkeys -d /dev/did/rdsk/dids2
phys-schost# /usr/cluster/lib/sc/scsi -c scrub -d /dev/did/rdsk/dids2
phys-schost# metaset -s name -C take -f
phys-schost# mount device mountpoint
phys-schost# cldevicegroup online -e devicegroupname
phys-schost# clresourcegroup online -eM resourcegroupname
Use this procedure if a diskset is corrupted or in a state that the nodes in the cluster are unable to take ownership of the diskset. If your attempts to clear the state have failed, use this procedure as a last attempt to fix the diskset.
These procedures work for Solaris Volume Manager metasets and multi-owner Solaris Volume Manager metasets.
Restoring a disk set from scratch can be time-consuming and error prone. A better alternative is to use the metastat command to regularly back up replicas or use Oracle Explorer (SUNWexplo) to create a backup. You can then use the saved configuration to recreate the diskset. You should save the current configuration into files (using the prtvtoc and the metastat commands), and then recreate the disk set and its components. See How to Recreate the Solaris Volume Manager Software Configuration.
# /usr/sbin/prtvtoc /dev/global/rdsk/diskname > /etc/lvm/diskname.vtoc
# /bin/cp /etc/lvm/md.tab /etc/lvm/md.tab_ORIGINAL
# /usr/sbin/metastat -p -s setname >> /etc/lvm/md.tab
Note - Other configuration files, such as the /etc/vfstab file, might reference the Solaris Volume Manager software. This procedure assumes that an identical Solaris Volume Manager software configuration is rebuilt and therefore, the mount information is the same. If Oracle Explorer (SUNWexplo) is run on a node that owns the set, it retrieves the prtvtoc and metaset —p information.
Purging a set from a node or all nodes removes the configuration. To purge a diskset from a node, the node must not have ownership of the diskset.
# /usr/sbin/metaset -s setname -P
Running this command removes the diskset information from the database replicas, as well as the Oracle Solaris Cluster repository. The -P and -C options allow a diskset to be purged without the need to completely rebuild the Solaris Volume Manager environment.
Note - If a multi-owner diskset is purged while nodes were booted out of cluster mode, you might need to install and use the Diagnostic Toolkit (SUNWscdtk) package provided by Oracle Support. The toolkit removes the information from the dcs configuration files. See Step 2.
# /usr/sbin/metaset -s setname -C purge
You should generally use the -P option, rather than the -C option. Using the -C option can cause a problem recreating the diskset because the Oracle Solaris Cluster software still recognizes the diskset.
If the purge options fail, verify that you have installed the latest kernel and metadevice patches and contact Oracle Solaris Cluster.
Use this procedure only if you experience a complete loss of your Solaris Volume Manager software configuration. The steps assume that you have saved your current Solaris Volume Manager configuration and its components and purged the corrupted diskset.
Note - Mediators should be used only on two-node clusters.
# /usr/sbin/metaset -s setname -a -h nodename1 nodename2
If this is a multi-owner diskset, use the following command to create a new diskset.
/usr/sbin/metaset -s setname -aM -h nodename1 nodename2
/usr/sbin/metaset -s setname -a -m nodename1 nodename2
/usr/sbin/metaset -s setname -a /dev/did/rdsk/diskname /dev/did/rdsk/diskname
# /usr/sbin/fmthard -s /etc/lvm/d4.vtoc /dev/global/rdsk/d4s2
# /usr/sbin/fmthard -s /etc/lvm/d8.vtoc /dev/global/rdsk/d8s2
You can run this command on any node.
# /usr/sbin/metainit -s setname -n -a metadevice
# /usr/sbin/metainit -s setname -a metadevice
# /usr/sbin/fsck -n /dev/md/setname/rdsk/metadevice
If the fsck command displays only a few errors, such as superblock count, then the device was probably reconstructed correctly. You can then run the fsck command without the -n option. If multiple errors appear, verify that you reconstructed the metadevice correctly. If you have, review the fsck errors to determine if the filesystem can be recovered. If it cannot, you should restore the data from a backup.
# /usr/sbin/metastat -p >> /etc/lvm/md.tab