Mount concept brief
Other files outside the root file system in order to be able to be accessed, must be "linked" to a directory on the root file system implemented by this association operation is the "mount", this directory is "mount point "To cancel the association process called" uninstall "
1. Mount: the outer root file system to enable access by association to a directory on the root file system;
2. mount point: mount_point, as another inlet for accessing the file system:
- Pre-existing;
- It should be used or not will not be used to process other directories;
- Mount point under the original file will be hidden;
Also note:
To mount the front, you'd better determine a few things:
- A single file system mounted should not be repeated at different points of the mount (directory);
- Single directory should not be repeated mount multiple file systems;
- To mount point as a directory, in theory, should all be empty directory it is.
Mount: mount
grammar:
mount [-fnrsvw] [-t vfstype] [-o options] device mount point
device:
- Device files: for example, / dev / sda5
- Label: -L 'LABEL', e.g. -L 'MYDATA'
- UUID, -U 'UUID': e.g. -U '0c50523c-43f1-45e7-85c0-a126711d406e'
- Pseudo file system name: proc, sysfs, devtmpfs, configfs
Mount point:
- Pre-existing; recommended to use an empty directory;
- Process equipment is in use and can not be uninstalled;
Options:
-t vsftype: specify the type of file system on the device to be mounted;
-r: readonly, read-only mount;
-w: read and write, read mount;
-n: In case of default, the system will actually mounts the real-time write / etc / mtab in order to facilitate the operation of other programs. However, in some cases (such as single maintenance mode) To avoid problems, will deliberately not written; this time you have to use the -n option of;
-a: automatically mount automatically mount all supported devices; (defined in the / etc / fstab file and mount options in the "auto-mount" function)
-L 'LABEL': volume label specified mount device;
-U 'UUID': a UUID specified device will be mounted;
-B, --bind: binding directory to another directory;
-o options :( option to mount the file system)
- async: asynchronous mode;
- sync: synchronization pattern;
- atime / noatime: contains directories and files;
- Visit timestamp directory: diratime / nodiratime
- auto / noauto: whether to support automatically mount
- exec / noexec: whether to support the applications that run on the file system to process
- dev / nodev: whether to support the use of device files on the file system;
- suid / nosuid: whether to support the use of special rights on this file system
- remount: remount
- ro: Tada读
- rw: read-write
- user / nouser: whether to allow ordinary users to mount the device
- acl: acl enable features on this file system
note:
A plurality of the above options can be used simultaneously, separated by commas with one another;
Default mount options: defaults: rw, suid, dev, exec, auto, nouser, and async
Viewing the kernel to track all the mounted devices: cat / proc / mounts
Mount Ext2 / Ext3 file system:
Dismount: umount
grammar:
umount [-fn] means the file name or mount point.
Options:
-f: Force dismount! Available in the case of a similar network file system (NFS) can not be read to.
-n: Do not upgrade the under / etc / mtab case removed.
Other files outside the root file system in order to be able to be accessed, must be "linked" to a directory on the root file system implemented by this association operation is the "mount", this directory is "mount point "To cancel the association process called" uninstall "
1. Mount: the outer root file system to enable access by association to a directory on the root file system;
2. mount point: mount_point, as another inlet for accessing the file system:
- Pre-existing;
- It should be used or not will not be used to process other directories;
- Mount point under the original file will be hidden;
Also note:
To mount the front, you'd better determine a few things:
- A single file system mounted should not be repeated at different points of the mount (directory);
- Single directory should not be repeated mount multiple file systems;
- To mount point as a directory, in theory, should all be empty directory it is.
Mount: mount
grammar:
mount [-fnrsvw] [-t vfstype] [-o options] device mount point
device:
- Device files: for example, / dev / sda5
- Label: -L 'LABEL', e.g. -L 'MYDATA'
- UUID, -U 'UUID': e.g. -U '0c50523c-43f1-45e7-85c0-a126711d406e'
- Pseudo file system name: proc, sysfs, devtmpfs, configfs
Mount point:
- Pre-existing; recommended to use an empty directory;
- Process equipment is in use and can not be uninstalled;
Options:
-t vsftype: specify the type of file system on the device to be mounted;
-r: readonly, read-only mount;
-w: read and write, read mount;
-n: In case of default, the system will actually mounts the real-time write / etc / mtab in order to facilitate the operation of other programs. However, in some cases (such as single maintenance mode) To avoid problems, will deliberately not written; this time you have to use the -n option of;
-a: automatically mount automatically mount all supported devices; (defined in the / etc / fstab file and mount options in the "auto-mount" function)
-L 'LABEL': volume label specified mount device;
-U 'UUID': a UUID specified device will be mounted;
-B, --bind: binding directory to another directory;
-o options :( option to mount the file system)
- async: asynchronous mode;
- sync: synchronization pattern;
- atime / noatime: contains directories and files;
- Visit timestamp directory: diratime / nodiratime
- auto / noauto: whether to support automatically mount
- exec / noexec: whether to support the applications that run on the file system to process
- dev / nodev: whether to support the use of device files on the file system;
- suid / nosuid: whether to support the use of special rights on this file system
- remount: remount
- ro: Tada读
- rw: read-write
- user / nouser: whether to allow ordinary users to mount the device
- acl: acl enable features on this file system
note:
A plurality of the above options can be used simultaneously, separated by commas with one another;
Default mount options: defaults: rw, suid, dev, exec, auto, nouser, and async
Viewing the kernel to track all the mounted devices: cat / proc / mounts
Mount Ext2 / Ext3 file system:
Dismount: umount
grammar:
umount [-fn] means the file name or mount point.
Options:
-f: Force dismount! Available in the case of a similar network file system (NFS) can not be read to.
-n: Do not upgrade the under / etc / mtab case removed.