mirror of
https://github.com/ceph/ceph
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6f95ebf04a
And elaborate the description about it. Fixes: https://tracker.ceph.com/issues/43028 Signed-off-by: Rishabh Dave <ridave@redhat.com>
589 lines
13 KiB
ReStructuredText
589 lines
13 KiB
ReStructuredText
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=============
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CephFS Shell
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=============
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CephFS Shell provides shell-like commands that directly interact with the
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:term:`Ceph File System`.
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This tool can be used in interactive mode as well as in non-interactive mode.
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In former mode, cephfs-shell opens a shell session and after the given command
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is finished, it prints the prompt string and waits indefinitely. When the
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shell session is finished, cephfs-shell quits with the return value of last
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executed command. In non-interactive mode, cephfs-shell issues a command and
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exits right after the command's execution is complete with the command's
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return value.
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Behaviour of CephFS Shell can be tweaked using ``cephfs-shell.conf``. Refer to
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`CephFS Shell Configuration File`_ for details.
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Usage :
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cephfs-shell [options] [command]
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cephfs-shell [options] -- [command, command,...]
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Options :
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-c, --config FILE Path to cephfs-shell.conf
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-b, --batch FILE Path to batch file.
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-t, --test FILE Path to transcript(s) in FILE for testing
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.. note::
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Latest version of the cmd2 module is required for running cephfs-shell.
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If CephFS is installed through source, execute cephfs-shell in the build
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directory. It can also be executed as following using virtualenv:
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.. code:: bash
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[build]$ virtualenv -p python3 venv && source venv/bin/activate && pip3 install cmd2
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[build]$ source vstart_environment.sh && source venv/bin/activate && python3 ../src/tools/cephfs/cephfs-shell
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Commands
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========
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mkdir
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-----
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Create the directory(ies), if they do not already exist.
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Usage :
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mkdir [-option] <directory>...
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* directory - name of the directory to be created.
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Options :
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-m MODE Sets the access mode for the new directory.
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-p, --parent Create parent directories as necessary. When this option is specified, no error is reported if a directory already exists.
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put
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---
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Copy a file/directory to Ceph File System from Local File System.
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Usage :
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put [options] <source_path> [target_path]
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* source_path - local file/directory path to be copied to cephfs.
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* if `.` copies all the file/directories in the local working directory.
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* if `-` Reads the input from stdin.
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* target_path - remote directory path where the files/directories are to be copied to.
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* if `.` files/directories are copied to the remote working directory.
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Options :
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-f, --force Overwrites the destination if it already exists.
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get
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---
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Copy a file from Ceph File System to Local File System.
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Usage :
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get [options] <source_path> [target_path]
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* source_path - remote file/directory path which is to be copied to local file system.
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* if `.` copies all the file/directories in the remote working directory.
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* target_path - local directory path where the files/directories are to be copied to.
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* if `.` files/directories are copied to the local working directory.
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* if `-` Writes output to stdout.
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Options:
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-f, --force Overwrites the destination if it already exists.
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ls
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--
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List all the files and directories in the current working directory.
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Usage :
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ls [option] [directory]...
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* directory - name of directory whose files/directories are to be listed.
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* By default current working directory's files/directories are listed.
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Options:
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-l, --long list with long format - show permissions
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-r, --reverse reverse sort
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-H human readable
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-a, -all ignore entries starting with .
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-S Sort by file_size
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cat
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---
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Concatenate files and print on the standard output
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Usage :
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cat <file>....
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* file - name of the file
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cd
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--
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Change current working directory.
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Usage :
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cd [directory]
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* directory - path/directory name. If no directory is mentioned it is changed to the root directory.
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* If '.' moves to the parent directory of the current directory.
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cwd
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---
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Get current working directory.
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Usage :
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cwd
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quit/Ctrl + D
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-------------
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Close the shell.
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chmod
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-----
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Change the permissions of file/directory.
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Usage :
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chmod <mode> <file/directory>
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mv
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--
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Moves files/Directory from source to destination.
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Usage :
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mv <source_path> <destination_path>
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rmdir
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-----
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Delete a directory(ies).
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Usage :
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rmdir <directory_name>.....
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rm
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--
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Remove a file(es).
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Usage :
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rm <file_name/pattern>...
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write
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-----
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Create and Write a file.
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Usage :
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write <file_name>
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<Enter Data>
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Ctrl+D Exit.
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lls
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---
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Lists all files and directories in the specified directory.Current local directory files and directories are listed if no path is mentioned
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Usage:
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lls <path>.....
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lcd
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---
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Moves into the given local directory.
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Usage :
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lcd <path>
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lpwd
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----
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Prints the absolute path of the current local directory.
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Usage :
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lpwd
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umask
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-----
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Set and get the file mode creation mask
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Usage :
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umask [mode]
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alias
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-----
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Define or display aliases
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Usage:
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alias [name] | [<name> <value>]
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* name - name of the alias being looked up, added, or replaced
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* value - what the alias will be resolved to (if adding or replacing) this can contain spaces and does not need to be quoted
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run_pyscript
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------------
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Runs a python script file inside the console
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Usage:
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run_pyscript <script_path> [script_arguments]
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* Console commands can be executed inside this script with cmd ("your command")
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However, you cannot run nested "py" or "pyscript" commands from within this
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script. Paths or arguments that contain spaces must be enclosed in quotes
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.. note:: This command is available as ``pyscript`` for cmd2 versions 0.9.13
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or less.
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py
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--
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Invoke python command, shell, or script
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Usage :
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py <command>: Executes a Python command.
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py: Enters interactive Python mode.
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shortcuts
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---------
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Lists shortcuts (aliases) available
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Usage :
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shortcuts
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history
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-------
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View, run, edit, and save previously entered commands.
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Usage :
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history [-h] [-r | -e | -s | -o FILE | -t TRANSCRIPT] [arg]
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Options:
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-h show this help message and exit
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-r run selected history items
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-e edit and then run selected history items
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-s script format; no separation lines
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-o FILE output commands to a script file
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-t TRANSCRIPT output commands and results to a transcript file
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unalias
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-------
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Unsets aliases
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Usage :
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unalias [-a] name [name ...]
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* name - name of the alias being unset
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Options:
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-a remove all alias definitions
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set
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---
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Sets a settable parameter or shows current settings of parameters.
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Usage :
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set [-h] [-a] [-l] [settable [settable ...]]
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* Call without arguments for a list of settable parameters with their values.
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Options :
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-h show this help message and exit
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-a display read-only settings as well
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-l describe function of parameter
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edit
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----
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Edit a file in a text editor.
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Usage:
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edit [file_path]
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* file_path - path to a file to open in editor
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run_script
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----------
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Runs commands in script file that is encoded as either ASCII or UTF-8 text.
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Each command in the script should be separated by a newline.
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Usage:
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run_script <file_path>
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* file_path - a file path pointing to a script
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.. note:: This command is available as ``load`` for cmd2 versions 0.9.13
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or less.
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shell
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-----
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Execute a command as if at the OS prompt.
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Usage:
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shell <command> [arguments]
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locate
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------
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Find an item in File System
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Usage:
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locate [options] <name>
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Options :
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-c Count number of items found
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-i Ignore case
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stat
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------
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Display file status.
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Usage :
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stat [-h] <file_name> [file_name ...]
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Options :
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-h Shows the help message
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snap
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----
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Create or Delete Snapshot
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Usage:
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snap {create|delete} <snap_name> <dir_name>
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* snap_name - Snapshot name to be created or deleted
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* dir_name - directory under which snapshot should be created or deleted
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setxattr
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--------
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Set extended attribute for a file
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Usage :
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setxattr [-h] <path> <name> <value>
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* path - Path to the file
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* name - Extended attribute name to get or set
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* value - Extended attribute value to be set
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Options:
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-h, --help Shows the help message
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getxattr
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--------
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Get extended attribute value for the name associated with the path
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Usage :
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getxattr [-h] <path> <name>
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* path - Path to the file
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* name - Extended attribute name to get or set
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Options:
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-h, --help Shows the help message
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listxattr
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---------
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List extended attribute names associated with the path
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Usage :
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listxattr [-h] <path>
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* path - Path to the file
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Options:
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-h, --help Shows the help message
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df
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--
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Display amount of available disk space
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Usage :
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df [-h] [file [file ...]]
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* file - name of the file
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Options:
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-h, --help Shows the help message
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du
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--
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Show disk usage of a directory
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Usage :
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du [-h] [-r] [paths [paths ...]]
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* paths - name of the directory
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Options:
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-h, --help Shows the help message
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-r Recursive Disk usage of all directories
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quota
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-----
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Quota management for a Directory
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Usage :
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quota [-h] [--max_bytes [MAX_BYTES]] [--max_files [MAX_FILES]] {get,set} path
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* {get,set} - quota operation type.
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* path - name of the directory.
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Options :
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-h, --help Shows the help message
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--max_bytes MAX_BYTES Set max cumulative size of the data under this directory
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--max_files MAX_FILES Set total number of files under this directory tree
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CephFS Shell Configuration File
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===============================
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By default, CephFS Shell looks for ``cephfs-shell.conf`` in the path provided
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by the environment variable ``CEPHFS_SHELL_CONF`` and then in user's home
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directory (``~/.cephfs-shell.conf``).
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Right now, CephFS Shell inherits all its options from its dependency ``cmd2``.
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Therefore, these options might vary with the version of ``cmd2`` installed on
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your system. Refer to ``cmd2`` docs for a description of these options.
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Following is a sample ``cephfs-shell.conf``::
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[cephfs-shell]
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prompt = CephFS:~/>>>
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continuation_prompt = >
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quiet = False
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timing = False
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colors = True
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debug = False
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abbrev = False
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autorun_on_edit = False
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echo = False
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editor = vim
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feedback_to_output = False
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locals_in_py = True
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Exit Code
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=========
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Following exit codes are returned by cephfs shell
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+-----------------------------------------------+-----------+
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| Error Type | Exit Code |
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+===============================================+===========+
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| Miscellaneous | 1 |
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+-----------------------------------------------+-----------+
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| Keyboard Interrupt | 2 |
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+-----------------------------------------------+-----------+
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| Operation not permitted | 3 |
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+-----------------------------------------------+-----------+
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| Permission denied | 4 |
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+-----------------------------------------------+-----------+
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| No such file or directory | 5 |
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+-----------------------------------------------+-----------+
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| I/O error | 6 |
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+-----------------------------------------------+-----------+
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| No space left on device | 7 |
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+-----------------------------------------------+-----------+
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| File exists | 8 |
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+-----------------------------------------------+-----------+
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| No data available | 9 |
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+-----------------------------------------------+-----------+
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| Invalid argument | 10 |
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+-----------------------------------------------+-----------+
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| Operation not supported on transport endpoint | 11 |
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+-----------------------------------------------+-----------+
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| Range error | 12 |
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+-----------------------------------------------+-----------+
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| Operation would block | 13 |
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+-----------------------------------------------+-----------+
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| Directory not empty | 14 |
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+-----------------------------------------------+-----------+
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| Not a directory | 15 |
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+-----------------------------------------------+-----------+
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| Disk quota exceeded | 16 |
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+-----------------------------------------------+-----------+
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| Broken pipe | 17 |
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+-----------------------------------------------+-----------+
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| Cannot send after transport endpoint shutdown | 18 |
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+-----------------------------------------------+-----------+
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| Connection aborted | 19 |
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+-----------------------------------------------+-----------+
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| Connection refused | 20 |
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+-----------------------------------------------+-----------+
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| Connection reset | 21 |
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+-----------------------------------------------+-----------+
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| Interrupted function call | 22 |
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+-----------------------------------------------+-----------+
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