Command failures, Performance issues, Command failures performance issues – Symantec VERITAS STORAGE FOUNDATION HP-UX User Manual

Page 64

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Storage Foundation Cluster File System problems

If this error message displays:

mount: slow

The node may be in the process of joining the cluster.

If you try to mount a file system that is already mounted without

–o

cluster

option (that is, not in shared mode) on another cluster node,

# mount -F vxfs /dev/vx/dsk/share/vol01 /vol01

The following error message displays:

vxfs mount: /dev/vx/dsk/share/vol01 is already mounted,

/vol01 is busy, allowable number of mount points exceeded,

or cluster reservation failed for the volume

Command failures

Manual pages not accessible with the

man

command. Set the MANPATH

environment variable as listed under

Setting PATH and MANPATH

environment variables

” on page 18.

The

mount

,

fsck

, and

mkfs

utilities reserve a shared volume. They fail on

volumes that are in use. Be careful when accessing shared volumes with
other utilities such as

dd

, it is possible for these commands to destroy data

on the disk.

Running some commands, such as

vxupgrade -n 7/vol02

, can generate

the following error message:

vxfs vxupgrade: ERROR: not primary in a cluster file

system

This means that you can run this command only on the primary, that is, the
system that mounted this file system first.

Performance issues

Quick I/O

File system performance is adversely affected if a cluster file system

is mounted with the

qio

option enabled and Quick I/O is licensed, but the file

system is not used for Quick I/O files. Because

qio

is enabled by default, if you

do not intend to use a shared file system for Quick I/O, explicitly specify the

noqio

option when mounting.

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