HP B2355-92068 Administration Manual page 610

mount_vxfs(1M)
noatime
qio|noqio
qlog
m
quota
remount
rw | ro
seconly
snapof=
snapsize=
610 Hewlett-Packard Company
The closesync , dsync
an fsync(2) to be run when the file is closed.
The tmpcache value disables delayed extending writes, trading off integrity for perfor-
mance. When this option is chosen, VxFS does not zero out new extents allocated as files are
sequentially written. Uninitialized data may appear in files being written at the time of a
system crash. See vxfsio (7) for an explanation of
.
VX_UNBUFFERED
Note: =
mincache direct
=
mincache tmpcache
Directs the file system to ignore file access time updates except when they coincide with
updates to or
ctime mtime
mounted with access time (
disk activity on file systems where access times are not important.
Enables or disables the VERITAS Quick I/O for Databases option for the given file system.
Quick I/O is available as a licensed feature of VxFS. By default,
the file system. If Quick I/O is not available,
I/O. If is specified, but the feature is not licensed,
qio
terminates without mounting the file system. If
I/O even if the license is installed.
For cluster file systems, qio
[=special]
Enables the file system to use VERITAS QuickLog. QuickLog threads multiple file system
logs together and redirects the file system log writes to the special device. If special is not
specified, the file system selects one of the QuickLog special devices. This option improves
the performance of NFS servers. QuickLog is available only through other VERITAS pro-
ducts. See the VERITAS File System Release Notes for current product information.
Enable disk quotas (valid only for
a private area of the file system. If the file system is mounted with quotas enabled, and the
file system was previously mounted with quotas disabled and was modified, then the quota
information is rebuilt. This may take a while.
Change the mount options for a mounted file system. In particular,
logging and caching policies. It also changes a files system from read-only to read/write.
cannot change a file system from read/write to read-only, nor can it set the
remount
or attributes.
pof snapsize
remount does not check possible changes in
you must explicitly pass it in the command line.
Read/write or read-only. The default is
Mounts a shared file system as a secondary only. A secondary-only file system cannot assume
the primaryship for the specified shared file system. For a mount with the
to succeed, primary must already be mounted.
option. The
cluster
command. This option can be set or reset using the
fsclustadm
remount with seconly
tem.
filesystem
Mount the file system as a snapshot of filesystem , where filesystem is either the directory on
which a VxFS file system is mounted, or is the block special file containing a mounted VxFS
file system. An explicit
-F vxfs
Note: filesystem is available only with the HP OnLineJFS product.
snapof=
size
Used in conjunction with
, unbuffered , and direct
, =
mincache dsync
are available only with the HP OnLineJFS product.
(see the stat(2)) manual page. By default, the file system is
) recording. You can use the
atime
mount
noqio
is also the default if a Quick I/O license is present.
type file systems). VxFS maintains quota information in
rw
/etc/fstab
rw .
seconly
option overrides any policy that was set using the
seconly
fails if the file system node is already the primary for the file sys-
option is required to mount a snapshot file system.
. size is the size in sectors of the snapshot file system being
snapof
− 6 −
HP-UX 11i Version 2: December 2007 Update
mount_vxfs(1M)
values all cause the equivalent of
,
VX_DIRECT VX_DSYNC
, =
mincache unbuffered
option to reduce
noatime
enables Quick I/O on
mount
mounts the file system without Quick
prints an error message and
mount
is specified, disables Quick
mount
changes the
remount
. If you use any specific option,
seconly
must be specified with the
-o remount
, and
, and
sna-
option
-o
option. A