Serviceguard NFS Toolkit for Linux Version A.01.02 Release Notes, April 2004

Serviceguard NFS for Linux Version A.01.02 Release Notes
Known Problems and Workarounds
Chapter 1 13
Known Problems and Workarounds
The following describes known problems with the NFS Toolkit and
workarounds for them. However, this is subject to change without notice.
For the most current information contact your HP support
representative.
More recent information on known problems and workarounds may be
available on the Hewlett Packard IT Resource Center:
http://itrc.hp.com (Americas and Asia Pacific)
http://europe.itrc.hp.com (Europe)
JAGad91624: NFS remote mount table discrepancy on
package fail over
What is the problem? The counter number of remote mount entries in
the /var/lib/nfs/rmtab may or may not be correct after running NFS
packages for a long period. This problem does not disrupt any client
access of NFS files.
Each entry in the /var/lib/nfs/rmtab file contains three fields. These
fields are: Client IP address, Exported file system , and Counter
number of the exported file system mounted by a client.
An rmtab file, for example, could contains following entries:
128.12.148.2:/expo/pkg1fs:0x00000001
128.12.148.3:/expo/pkg1fs:0x00000001
128.12.148.2:/expo/pkg2fs:0x00000001
The counter field, in normal case, contains 0x00000001 (e.g. the counter
can be 2 if the same client mounted the same file system twice). The
counter may or may not be updated correctly when a client un-mounts
the file system.
What is the workaround? The system administrator needs to be
aware of the counter number that may not be consistent with the
number of clients currently mounting the file systems. The
administrator can choose to ignore the counter number; however if the
file, /var/lib/nfs/rmtab, or the counter number becomes too large,
following steps can be taken in order to maintain the file.