Managing HP Serviceguard A.11.20.00 for Linux, June 2012

For an NFS-imported file system, the additional parameters required are fs_server,
fs_directory, fs_type, and fs_mount_opt; see fs_server (page 171) for an example.
CAUTION: Before configuring an NFS-imported file system into a package, make sure you have
read and understood the rules and guidelines under “Planning for NFS-mounted File Systems”
(page 94), and configured the cluster parameter CONFIGURED_IO_TIMEOUT_EXTENSION,
described under “Cluster Configuration Parameters ” (page 80).
File systems are mounted in the order you specify in the package configuration file, and unmounted
in the reverse order.
See “File system parameters” (page 169) and the comments in the FILESYSTEMS section of the
configuration file for more information and examples. See also “Volume Manager Planning ”
(page 76), and the mount manpage.
NOTE: For filesystem types other than Red Hat GFS (see fs_type), a volume group must be
defined in this file (using vg; see (page 169)) for each logical volume specified by an fs_name
entry.
fs_server
The name or IP address (IPv4 or IPv6) of the NFS server for an NFS-imported file system. In this
case, you must also set fs_type to nfs, fs_mount_opt to -o llock on HPUX , and
local_lock = all on Linux. fs_name specifies the directory to be imported from fs_server,
and fs_directory specifies the local mount point.
For example:
fs_name /var/opt/nfs/share1
fs_server wagon
fs_directory /nfs/mnt/share1
fs_type nfs
#fs_mount_opt local_lock =all
#fs_umount_opt
#fs_fsck_opt
NOTE: fs_umount_opt is optional and fs_fsck_opt is not used for an NFS-imported file
system. (Both are left commented out in this example.) fs_mount_opt is not supported on Linux.
fs_directory
The root of the file system specified by fs_name. Replaces FS, which is still supported in the
package control script for legacy packages; see “Configuring a Legacy Package” (page 210).
See the mount manpage and the comments in the configuration file for more information.
fs_type
The type of the file system specified by fs_name. This parameter is in the package control script
for legacy packages.
For an NFS-imported file system, this must be set to nfs. See the example under “fs_server”
(page 171).
Supported types are ext3, ext4 (on RHEL 6 and later), reiserfs, and gfs.
Red Hat GFS and reiserfs are not supported in Serviceguard A.11.20.00 version.
WARNING! ext4 file system has a delayed allocation mechanism. Hence, the behavior of
writing files to disk is different from ext3. Unlike ext3, the ext4 file system does not write data
to disk on committing the transaction, so it takes longer for the data to be written to the disk. Your
program must use data integrity calls such as fsync() to ensure that data is written to the disk.
Choosing Package Modules 171