08-31-2010
Remount filesystem
Hi all,
i don't know why, but a filesystem of my server is in read only ( / ).
I try to do a "mount -o remount / " but it answer me:
mount: block device /dev/VolGroup00/LogVol00 is write-protected, mounting read-only
Do you know why?
Thanks in advance.
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LEARN ABOUT POSIX
mount_udfs
mount_udfs(1M) System Administration Commands mount_udfs(1M)
NAME
mount_udfs - mount a udfs file system
SYNOPSIS
mount -F udfs [generic_options] [-o specific_options] [-O] special mount_point
mount -F udfs [generic_options] [-o specific_options] [-O] special | mount_point
DESCRIPTION
The mount utility attaches a udfs file system to the file system hierarchy at the mount_point, which is the pathname of a directory. If
mount_point has any contents prior to the mount operation, these are hidden until the file system is unmounted.
If mount is invoked with either special or mount_point as the only arguments, mount searches /etc/vfstab to fill in the missing arguments,
including the specific_options. See mount(1M).
If special and mount_point are specified without any specific_options, the default is rw.
If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the sym-
bolic link refers, rather than on top of the symbolic link itself.
OPTIONS
See mount(1M) for the list of supported generic_options.
The following options are supported:
-o specific_options Specify udfs file system specific options in a comma-separated list with no intervening spaces. The following spe-
cific_options are available:
m
Mount the file system without making an entry in /etc/mnttab.
remount
Remount the file system as read-write. The option is used in conjunction with the rw option.
A file system mounted read-only can be remounted as read-write. This option fails if the file system is not
currently mounted.
-O Overlay mount. Allow the file system to be mounted over an existing mount point, making the underlying file system
inaccessible. If a mount is attempted on a pre-existing mount point without setting this flag, the mount fails,
producing the error device busy.
FILES
/etc/mnttab Table of mounted file systems
/etc/vfstab List of default parameters for each file system
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWudf |
+-----------------------------+-----------------------------+
SEE ALSO
fsck(1M), fsck_udfs(1M), mount(1M), mountall(1M), mount(2), mnttab(4), vfstab(4), attributes(5)
DIAGNOSTICS
not super user
The command is run by a non-root user. Run as root.
no such device
The device name specified does not exist.
not a directory
The specified mount point is not a directory.
is not an udfs file system
The device specified does not contain a udf 1.50 file system or the udfs file system module is not available.
is already mounted
The specified device is already in use.
not a block device
The device specified is not a block device. Use block device to mount.
write-protected
The device is read-only.
is corrupted. needs checking
The file system is in an inconsistent state. Run fsck.
NOTES
Copy-protected files can be stored on DVD-ROM media using Universal Disk Format (UDF). Reading these copy-protected files is not possible
as this involves an authentication process. Unless an authentication process between the host and the drive is completed, reading these
copy-protected files after mounting and before the authentication process, returns an error.
SunOS 5.10 24 Nov 2003 mount_udfs(1M)