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Mount Option Mount Description
maxiowidth
maxiowidth
princ
Override for principal
auth
Override for authorization type
key
Override keytab type
keytab
Override for keytab file
stage / nostage
Default is stage. This overrides the COS setting. Application can override this by
specifying O_NONBLOCK on the open() system call. An application cannot override
the nostage setting. Most standard Linux commands / library functions do not
specify O_NONBLOCK so this mount point option will determine what happens.
nfs
Only specify this if nfs is using this mount point.
14.4.4. Un-mounting an HPSS Filesystem
The mount(8) command (without command line parameters) can be used to view the list of hpssfs
mounted entries. An example of a mounted hpssfs entry is as follows:
hpssfs(2553:2554):/ on /tmnt type
hpssfs(rw,noauto,san,dio,ip=eth2,cos=96)
where:
• 2553 is the HPSS VFS Daemon process ID
• 2554 is the HPSS VFS Mount Helper group ID
The umount(8) command is used to unmount the above mounted file system. For example:
# su -
# umount /tmnt
14.4.5. Linux ‘proc’ Filesystem Statistics
The VFS Interface provides a Linux proc filesystem that contains run-time statistic. The statistics can be
viewed by running the 'cat' utility on various proc filesystem files.
• Show kernel module version:
# cat /proc/fs/hpssfs/version
• List all active SAN3P LUNs and their associated path:
# cat /proc/fs/san
• Show or update current trace level for a mounted file system. Valid trace levels are 1 to 5 from
least to most.
# cat /proc/fs/hpssfs/<group ID>/trace
HPSS Management Guide November 2009
Release 7.3 (Revision 1.0) 354