Troubleshooting
Cluster File System Problems
Cluster File System Problems
If there is a device failure or controller failure to a device, the file system may become disabled
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 qio option enabled. So if some nodes in the cluster have a Quick I/O license installed and others do not, a cluster mount can succeed on some nodes and fail on others due to different mount options. To avoid this situation, ensure that Quick I/O licensing is uniformly applied, or be careful to mount the cluster file system with the qio/noqio option appropriately specified on each node of the cluster.
See the mount(1M) manual page.
•A shared CVM volume was not specified.
•The device is still mounted as a local file system somewhere on the cluster. Unmount the device.
•The fsck or mkfs command is being run on the same volume from another node, or the volume is mounted in
•The vxfsckd daemon is not running. This typically happens only if the CFSfsckd agent was not started correctly.
•If mount fails with the error message: vxfs mount: cannot open mnttab
/etc/mnttab is missing or you do not have root privileges.
•If mount fails with the error message:
vxfs mount: device already mounted, ...
The device is in use by mount, mkfs or fsck on the same node. This error cannot be generated from another node in the cluster.
•If the error message displays:
50 | Appendix A |