mount(1M-vxfs) (VxFS) mount(1M-vxfs)
NAME
mount (vxfs) - mount a Veritas File System (VxFS)
SYNOPSIS
mount [-F vxfs] [genericoptions] [-o specificoptions]
{special | mountpoint}
mount [-F vxfs] [genericoptions] [-o specificoptions]
special mountpoint
DESCRIPTION
This manual page is an addendum to the mount(1M) manual page. It
describes the Veritas File System (VxFS) specific features of the
mount command.
The mount command notifies the system that special, a Veritas block
special device, is available to users from the mountpoint which must
exist before mount is called; it becomes the name of the root of the
newly mounted special.
OPTIONS
-F vxfs Specifies a Veritas file system type (FSType).
genericoptions
Options supported by the generic mount command.
-o Specifies the Veritas file system specific options in a
comma-separated list. The available options are:
rw|ro Read/write or read-only. The default is rw.
suid|nosuid Set-user-id is honored or ignored on execution.
The default is suid.
log|nolog Enables or disables activity logging. File sys-
tem integrity across system failure requires
that activity logging be enabled. The nolog
option is used for memory resident or temporary
file systems. The default is log.
blkclear Ensures that all data extents are cleared
before being allocated to a file (requires syn-
chronous zeroing of certain newly allocated
extents).
remount Used in conjunction with rw. A file system
mounted read-only can be remounted read-write.
remount fails if the file system is not
currently mounted or if the file system is
mounted rw.
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snapof=snapofspecial
Mounts the file system as a snapshot of
snapofspecial, where snapofspecial is the
block special file of a mounted Veritas file
system.
snapsize=size
Used in conjunction with snapof. size is the
size in sectors of the snapshot file system
being mounted. This option is required only
when the device driver is incapable of deter-
mining the size of snapofspecial, and will
default to the entire device if not specified.
mincache=direct|dsync|closesync
This option is used to alter the caching
behavior of the file system. The direct value
will cause any writes without the OSYNC flag
and all reads to be handled as if the VXDIRECT
caching advisory had been set. The dsync value
will cause any writes without either the OSYNC
flag or the VXDIRECT caching advisory to be
handled as if the VXDSYNC caching advisory had
been set. The closesync, dsync, and direct
values all cause the equivalent of an fsync(2)
to be run when the file is closed.
convosync=direct|dsync|closesync
This option is used to alter the caching
behavior of the file system for OSYNC I/O
operations. The direct value will cause any
reads or writes with the OSYNC flag to be han-
dled as if the VXDIRECT caching advisory had
been set instead. The dsync value will cause
any writes with the OSYNC flag to be handled
as if the VXDSYNC caching advisory had been
set instead. The closesync, dsync, and direct
values all cause the equivalent of an fsync(2)
to be run when any file accessed with the
OSYNC flag is closed.
datainlog|nodatainlog
Normally, the Veritas file system will do
OSYNC writes by logging the data and the time
change to the inode (datainlog). If the noda-
tainlog option is used, the logging of synchro-
nous writes is disabled. Then, the OSYNC
writes will write the data into the file and
update the inode synchronously before returning
to the user.
Only a privileged user can mount file systems.
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mount(1M-vxfs) (VxFS) mount(1M-vxfs)
NOTES
Unlike some file system commands, multiple -o options to mount do not
accumulate; instead the last one of the command line takes precedence.
FILES
/etc/mnttab
SEE ALSO
mount(1M), setmnt(1M), mount(2), setuid(2), VxFS-specific fs(4),
mnttab(4).
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