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| Title | Size | Download |
|---|---|---|
| 05-File system management configuration | 91.87 KB |
Contents
Storage media and file systems
Specifying a directory name or file name
Restrictions and guidelines: File system management
Managing storage media and file systems
Managing files and directories
Setting the operation mode for files and directories
Displaying file and directory information
Displaying the contents of a text file
Displaying the working directory
Changing the working directory
Archiving files and directories
Extracting files and directories
Managing file systems
This chapter describes how to manage file systems.
About file system management
Storage media and file systems
The following matrix shows the supported storage media on different device models:
|
Hardware series |
Model |
Fixed storage media |
Hot-swappable storage media |
|
WA6600 series |
WA6638 |
Flash memory |
USB disk |
|
WA6638i |
Flash memory |
USB disk |
|
|
WA6636 |
Flash memory |
USB disk |
|
|
WA6630X |
Flash memory |
Not supported |
|
|
WA6628 |
Flash memory |
USB disk |
|
|
WA6628X |
Flash memory |
Not supported |
|
|
WA6628E-T |
Flash memory |
Not supported |
|
|
WA6622 |
Flash memory |
USB disk |
|
|
WA6620 |
Flash memory |
USB disk |
|
|
WA6620X |
Flash memory |
Not supported |
|
|
WA6300 series |
WA6338 |
Flash memory |
USB disk |
|
WA6338-HI |
Flash memory |
USB disk |
|
|
WA6338-LI |
Flash memory |
USB disk |
|
|
WA6330 |
Flash memory |
USB disk |
|
|
WA6330-LI |
Flash memory |
USB disk |
|
|
WA6322 |
Flash memory |
Not supported |
|
|
WA6322H |
Flash memory |
Not supported |
|
|
WA6322H-HI |
Flash memory |
Not supported |
|
|
WA6322H-LI |
Flash memory |
Not supported |
|
|
WA6320 |
Flash memory |
Not supported |
|
|
WA6320-C |
Flash memory |
Not supported |
|
|
WA6320-D |
Flash memory |
Not supported |
|
|
WA6320-SI |
Flash memory |
Not supported |
|
|
WA6320H |
Flash memory |
USB disk |
|
|
WA6320H-LI |
Flash memory |
USB disk |
|
|
WA6320H-XEPON |
Flash memory |
Not supported |
|
|
WAP922 series |
WAP922E |
Flash memory |
Not supported |
|
WAP923 series |
WAP923 |
Flash memory |
USB disk |
For models that support only the flash memory, only one file system is available, which is flash:.
For models that support both fixed (the flash memory) and hot swappable (USB disk) storage media, each storage medium has one file system.
Storage medium and file system naming conventions
The file system on the flash memory has the same name as the flash memory. The name has the following parts:
· Storage medium type flash.
· Colon (:).
A USB disk name and the file system names share the following parts:
· Storage medium type usb.
· Sequence number, a lower-case English letter such as a, b, or c.
· Colon (:).
|
|
IMPORTANT: File system names are case sensitive and must be entered in lower case. |
Default file system
You are working with the default file system by default after you log in. To specify a file or directory on the default file system, you do not need to specify the file system name. For example, you do not need to specify any location information if you want to save the running configuration to the root directory of the default file system.
Directories
Directories in a file system are structured in a tree form.
Root directory
The root directory is represented by a forwarding slash (/). For example, flash:/ represents the root directory of the flash memory.
Working directory
The working directory is also called the current directory.
Directory naming conventions
When you specify a name for a directory, follow these conventions:
· A directory name can contain letters, digits, and special characters except for asterisks (*), vertical bars (|), forward slashes (/), backward slashes (\), question marks (?), left angle brackets (<), right angle brackets (>), quotation marks ("), and colons (:).
· A directory whose name starts with a dot character (.) is a hidden directory. To prevent the system from hiding a directory, make sure the directory name does not start with a dot character.
Commonly used directories
The device has some factory-default directories. The system automatically creates directories during operation. These directories include:
· diagfile—Stores diagnostic information files.
· logfile—Stores log files.
· seclog—Stores security log files.
· versionInfo—Stores software version information files.
Files
File naming conventions
When you specify a name for a file, follow these conventions:
· A file name can contain letters, digits, and special characters except for asterisks (*), vertical bars (|), forward slashes (/), backward slashes (\), question marks (?), left angle brackets (<), right angle brackets (>), quotation marks ("), and colons (:).
· A file whose name starts with a dot character (.) is a hidden file. To prevent the system from hiding a file, make sure the file name does not start with a dot character.
Common file types
The device has some factory-default files and might create some files automatically during operation. The types of these files include:
· .ipe file—Compressed software image package file.
· .bin file—Software image file.
· .cfg file—Configuration file.
· .mdb file—Binary configuration file.
· .log file—Log file.
Specifying a directory name or file name
Specifying a directory name
To specify a directory, you can use the absolute path or a relative path. For example, the working directory is flash:/. To specify the test2 directory in Figure 1, you can use the following methods:
· flash:/test/test1/test2 (absolute path)
· flash:/test/test1/test2/ (absolute path)
· test/test1/test2 (relative path)
· test/test1/test2/ (relative path)
Figure 1 Sample directory hierarchy
Specifying a file name
To specify a file, use the following methods:
· Enter the absolute path of the file and the file name in the format of filesystem/directory1/directory2/…/directoryn/filename, where directoryn is the directory in which the file resides.
· Enter the relative path of the file and the file name.
For example, the working directory is flash:/. The samplefile.cfg file is in the test2 directory shown in Figure 1. To specify the file, you can use the following methods:
· flash:/test/test1/test2/samplefile.cfg
· test/test1/test2/samplefile.cfg
Restrictions and guidelines: File system management
To avoid file system corruption, do not install or remove storage media during file system management.
Make sure a USB disk is not write protected before an operation that requires the write right on the disk.
You cannot access a file system that is being formatted or repaired.
Before managing file systems, directories, and files, make sure you know the possible impact.
Managing storage media and file systems
Formatting a file system
Restrictions and guidelines
Formatting a file system permanently deletes all files and directories in the file system. You cannot restore the deleted files or directories.
You can format a file system only when no other users are accessing the file system.
Procedure
To format a file system, execute the following command in user view:
format filesystem
Repairing a file system
Restrictions and guidelines
If part of a file system is inaccessible, use this task to examine and repair the file system.
You can repair a file system only when no other users are accessing the file system.
Procedure
To repair a file system, execute the following command in user view:
fixdisk filesystem
Managing files and directories
Setting the operation mode for files and directories
About this task
The device supports the following operation modes:
· alert—The system prompts for confirmation when your operation might cause problems such as file corruption or data loss. This mode provides an opportunity for you to cancel a disruptive operation.
· quiet—The system does not prompt for confirmation when you perform a file or directory operation except the recycle bin emptying operation.
Procedure
1. Enter system view.
system-view
2. Set the operation mode for files and directories.
file prompt { alert | quiet }
The default mode is alert.
Displaying file and directory information
To display file and directory information, execute the following command in user view:
dir [ /all ] [ file | directory | /all-filesystems ]
If multiple users perform file operations (for example, creating or deleting files or directories) at the same time, the output from this command might be incorrect.
Displaying the contents of a text file
To display the contents of a text file, execute the following command in user view:
more file
Displaying the working directory
To display the working directory, execute the following command in user view:
pwd
Changing the working directory
About this task
The default working directory is the root directory of the default file system.
Procedure
To change the working directory, execute the following command in user view:
cd { directory | .. }
Creating a directory
To create a directory, execute the following command in user view:
mkdir directory
Renaming a file or directory
To rename a file or directory, execute the following command in user view:
rename { source-file | source-directory } { dest-file | dest-directory }
Copying a file
To copy a file, execute the command in user view.
copy source-file { dest-file | dest-directory } [ source interface interface-type interface-number ]
Moving a file
To move a file, execute the following command in user view:
move source-file { dest-file | dest-directory }
Deleting and restoring files
About this task
You can delete a file permanently or move it to the recycle bin of the file system. A file moved to the recycle bin can be restored, but a permanently deleted file cannot.
Each file system has a recycle bin. A recycle bin is a directory named .trash in the root directory of the file system.
Restrictions and guidelines
Files in the recycle bin occupy storage space. To release the occupied storage space, delete files from the recycle bin.
To delete files from the recycle bin, use the reset recycle-bin command. If you use the delete command, the recycle bin might not be able to operate correctly.
To display files in a recycle bin, use one of the following methods:
· Access the root directory of the file system and execute the dir /all .trash command.
· Access the recycle bin directory of the file system and execute the dir command.
Deleting a file
To delete a file, execute one of the following commands in user view:
· Delete a file by moving it to the recycle bin.
delete file
· Delete a file permanently.
delete /unreserved file
· Delete files from the recycle bin.
reset recycle-bin [ /force ]
Restoring a file
To restore a file from the recycle bin, execute the following command in user view:
undelete file
Deleting a directory
Restrictions and guidelines
To delete a directory, you must delete all files and subdirectories in the directory.
Deleting a directory permanently deletes all its files in the recycle bin, if any.
Procedure
To delete a directory, execute the following command in user view:
rmdir directory
Archiving files and directories
About this task
You can archive files and directories to a single file for purposes such as file backup. The original files and directories still exist.
When you archive files and directories, you can choose to compress the archive files so the archive files use less storage space.
Procedure
To archive files and directories, execute the following command in user view:
tar create [ gz ] archive-file dest-file [ verbose ] source { source-file | source-directory }&<1-5>
Extracting files and directories
About this task
Use this feature to extract files and directories from archive files.
Restrictions and guidelines
To specify the screen keyword for the tar extract command, first use the tar list command to identify the types of the archived files. As a best practice, specify the keyword only if all archived files are text files. Displaying the content of an archived non-text file that contains terminal control characters might result in garbled characters and even cause the terminal unable to operate correctly. To use the terminal again, you must close the current connection and log in to the device again.
Procedure
To extract files and directories, execute the following commands in user view:
1. (Optional.) Display archived files and directories.
tar list archive-file file
2. Extract files and directories.
tar extract archive-file file [ verbose ] [ screen | to directory ]
Compressing a file
To compress a file, execute the following command in user view:
gzip file
Decompressing a file
To decompress a file, execute the following command in user view:
gunzip file
Calculating the file digest
About this task
File digests are used to verify file integrity.
Procedure
To calculate the digest of a file, execute one of the following commands in user view:
· Use the SHA-256 algorithm.
sha256sum file
· Use the MD5 algorithm.
md5sum file
