HP Serviceguard Storage Management Suite for VERITAS CFS Troubleshooting, Inaccessible System

Page 10

NOTE: Remove remote shell permissions after completing the CFS installation and configuration.

Resource Temporarily Unavailable

If the installation fails with the following error message on the console:

fork() failed: Resource temporarily unavailable

The value of the nkthread tunable parameter may not be large enough. The nkthread tunable requires a minimum value of 600 on all systems in the cluster. To determine the current value of nkthread, enter:

#kctune –q nkthread

If necessary, you can change the value of nkthread using the System Management Homepage (SMH) tool, or by running the kctune command. If you change the value of nkthread, the kernel must be rebuilt for the new value to take effect. It is easier to change the value using SAM because there is an option to process the new kernel immediately. See the kctune(1M) manual pages for more information on tuning kernel parameters.

Inaccessible System

The system you specified is not accessible. This could be for a variety of reasons such as, the system name was entered incorrectly, or the system is not available over the network.

Checking communication with system01

FAILED

System not accessible : system01

 

Suggested solution: Verify that you entered the system name correctly; use the ping(1M) command to verify accessibility of the host.If a system cannot access the software source depot, either swagentd is not running on the target system or the swlist command cannot see the source depot.

Correct /etc/{hosts, nsswitch.conf} and continue from here Continue? [Y/N] :

Suggested solutions: check that swagentd is running. Check whether there is an entry for the target system in /etc/hosts. If there is no entry, then ensure the hosts file is not the primary lookup for the “hosts” entry in the /etc/nsswitch.conf file.

CFS Troubleshooting

If there is a device failure or controller failure to a device, the file system may become disabled cluster-wide. To address this problem, unmount the file system on all of the nodes, then run a full fsck. When the file system check completes, mount all nodes again. When the file system check completes, use cfsmount to mount the file system cluster-wide.

Unmount Failures

The umount command can fail if a reference is being held by an NFS server. Unshare the mount point and try to unmount again.

Mount Failures

Mounting a file system can fail for the following reasons:

The file system is not using disk layout Version 6 or 7.

The mount options do not match the options for already mounted nodes.

If the node has a Quick I/O for Databases license installed, a cluster file system is mounted by default with the qio option enabled - even if the qio mount option was not explicitly specified. If the Quick I/O license is not installed, a cluster file system is mounted without the

10 Overview

Image 10
Contents HP Part Number Published April Edition Legal Notices Contents Preface Publishing HistoryOverview Supported Features Unsupported FeaturesSG SMS Bundles Do Not Include VCS Membership Ports Cluster CommunicationFile system size limits Single network option Configuring low priority a linkMaximum number of nodes Split-brain and jeopardy handlingCreating CVM Disk Groups and CFS Mount Points CFS AdministrationModular Style Legacy Style CFS Installation IssuesIncorrect permissions for root on remote system Resource Temporarily Unavailable CFS TroubleshootingInaccessible System Unmount FailuresEtc/mnttab is missing or you do not have root privileges Command FailuresVxfs vxupgrade Error not primary in a cluster file system Vxfs mount device already mountedPerformance Issues Low Memory
Related manuals
Manual 74 pages 62 Kb