CEPHFS-SHELL(8)

NAME
cephfs-shell - Shell-like tool talking with CephFS

SYNOPSIS
cephfs-shell [options] [command]
cephfs-shell [options] -- [command, command,...]

DESCRIPTION

CephFS Shell provides shell-like commands that directly interact with the Ceph File System.

This tool can be used in interactive mode as well as in non-interactive mode. In former mode, cephfs-shell opens a shell session and after the given command is finished, it prints the prompt string and waits indefinitely. When the shell session is finished, cephfs-shell quits with the return value of last executed command. In non-interactive mode, cephfs-shell issues a command and exits right after the command's execution is complete with the command's return value.

Behaviour of CephFS Shell can be tweaked using cephfs-shell.conf. Refer to CephFS Shell Configuration File for details.

OPTIONS

-b, --batch FILE
    Path to batch file.

-c, --config FILE
    Path to cephfs-shell.conf

-f, --fs FS
    Name of filesystem to mount.

-t, --test FILE
    Path to transcript(s) in FILE for testing

    Note: Latest version of the cmd2 module is required for running cephfs-shell. If CephFS is installed through source, execute cephfs-shell in the build directory. It can also be executed as following using virtualenv:

        [build]$ python3 -m venv venv && source venv/bin/activate && pip3 install cmd2 colorama
        [build]$ source vstart_environment.sh && source venv/bin/activate && python3 ../src/tools/cephfs/shell/cephfs-shell

COMMANDS

Note: Apart from Ceph File System, CephFS Shell commands can also interact directly with the local file system. To achieve this, ! (an exclamation point) must precede the CephFS Shell command.

Usage : !<cephfs_shell_command>

For example,

    CephFS:~/>>> !ls # Lists the local file system directory contents.
    CephFS:~/>>> ls  # Lists the Ceph File System directory contents.

  mkdir

Create the directory(ies), if they do not already exist.

Usage : mkdir [-option] <directory>...

•   directory - name of the directory to be created.

Options :

-m MODE
    Sets the access mode for the new directory.

-p, --parent
    Create parent directories as necessary. When this option is specified, no error is reported if a directory already exists.

  put

Copy a file/directory to Ceph File System from Local File System.

Usage : put [options] <source_path> <target_path>

•

source_path - local file/directory path to be copied to cephfs.

•   if . copies all the file/directories in the local working directory.

•   if - Reads the input from stdin.

•

target_path - remote directory path where the files/directories are to be copied to.

•   if . files/directories are copied to the remote working directory.

Options :

-f, --force
    Overwrites the destination if it already exists.

  get

Copy a file from Ceph File System to Local File System.

Usage : get [options] <source_path> <target_path>

•

source_path - remote file/directory path which is to be copied to local file system.

•   if . copies all the file/directories in the remote working directory.

•

target_path - local directory path where the files/directories are to be copied to.

•   if . files/directories are copied to the local working directory.

•   if - Writes output to stdout.

Options:

-f, --force
    Overwrites the destination if it already exists.

  ls

List all the files and directories in the current working directory.

Usage : ls [option] [directory]...

•

directory - name of directory whose files/directories are to be listed.

•   By default current working directory's files/directories are listed.

Options:

-l, --long
    list with long format - show permissions

-r, --reverse
    reverse sort

-H  human readable

-a,-all
    ignore entries starting with .

-S  Sort by file_size

  cat

Concatenate files and print on the standard output

Usage : cat <file>....

•   file - name of the file

  ln

Add a hard link to an existing file or create a symbolic link to an existing file or directory.

Usage: ln [options] <target> [link_name]

•   target - file/directory to which a link is to be created

•   link_name - link to target with the name link_name

Options:

-s, --symbolic
    Create symbolic link

-v, --verbose
    Print name of each linked file

-f, --force
    Force create link/symbolic link

  cd

Change current working directory.

Usage : cd [directory]

•

directory - path/directory name. If no directory is mentioned it is changed to the root directory.

•   If '.' moves to the parent directory of the current directory.

  cwd

Get current working directory.

Usage : cwd

  quit/Ctrl + D

Close the shell.

  chmod

Change the permissions of file/directory.

Usage : chmod <mode> <file/directory>

  mv

Moves files/Directory from source to destination.

Usage : mv <source_path> <destination_path>

  rmdir

Delete a directory(ies).

Usage : rmdir <directory_name>.....

  rm

Remove a file(es).

Usage : rm <file_name/pattern>...

  write

Create and Write a file.

Usage : write <file_name> <Enter Data> Ctrl+D Exit.

  lls

Lists all files and directories in the specified directory.Current local directory files and directories are listed if no path is mentioned

Usage: lls <path>.....

  lcd

Moves into the given local directory.

Usage : lcd <path>

  lpwd

Prints the absolute path of the current local directory.

Usage : lpwd

  umask

Set and get the file mode creation mask

Usage : umask [mode]

  alias

Define or display aliases

Usage: alias [name] | [<name> <value>]

•   name - name of the alias being looked up, added, or replaced

•   value - what the alias will be resolved to (if adding or replacing) this can contain spaces and does not need to be quoted

  run_pyscript

Runs a python script file inside the console

Usage: run_pyscript <script_path> [script_arguments]

•   Console commands can be executed inside this script with cmd ("your command") However, you cannot run nested "py" or "pyscript" commands from within this script. Paths or arguments that contain spaces must be enclosed in quotes

    Note: This command is available as pyscript for cmd2 versions 0.9.13 or less.

  py

Invoke python command, shell, or script

Usage : py <command>: Executes a Python command. py: Enters interactive Python mode.

  shortcuts

Lists shortcuts (aliases) available

Usage : shortcuts

  history

View, run, edit, and save previously entered commands.

Usage : history [-h] [-r | -e | -s | -o FILE | -t TRANSCRIPT] [arg]

Options:

-h  show this help message and exit

-r  run selected history items

-e  edit and then run selected history items

-s  script format; no separation lines

-o FILE
    output commands to a script file

-t TRANSCRIPT
    output commands and results to a transcript file

  unalias

Unsets aliases

Usage : unalias [-a] name [name ...]

•   name - name of the alias being unset

Options:

-a  remove all alias definitions

  set

Sets a settable parameter or shows current settings of parameters.

Usage : set [-h] [-a] [-l] [settable [settable ...]]

•   Call without arguments for a list of settable parameters with their values.

Options :

-h  show this help message and exit

-a  display read-only settings as well

-l  describe function of parameter

  edit

Edit a file in a text editor.

Usage: edit [file_path]

•   file_path - path to a file to open in editor

  run_script

Runs commands in script file that is encoded as either ASCII or UTF-8 text. Each command in the script should be separated by a newline.

Usage: run_script <file_path>

•   file_path - a file path pointing to a script

    Note: This command is available as load for cmd2 versions 0.9.13 or less.

  shell

Execute a command as if at the OS prompt.

Usage: shell <command> [arguments]

  locate

Find an item in File System

Usage: locate [options] <name>

Options :

-c  Count number of items found

-i  Ignore case

  stat

Display file status.

Usage : stat [-h] <file_name> [file_name ...]

Options :

-h  Shows the help message

  snap

Create or Delete Snapshot

Usage: snap {create|delete} <snap_name> <dir_name>

•   snap_name - Snapshot name to be created or deleted

•   dir_name - directory under which snapshot should be created or deleted

  setxattr

Set extended attribute for a file

Usage : setxattr [-h] <path> <name> <value>

•   path - Path to the file

•   name - Extended attribute name to get or set

•   value - Extended attribute value to be set

Options:

-h, --help
    Shows the help message

  getxattr

Get extended attribute value for the name associated with the path

Usage : getxattr [-h] <path> <name>

•   path - Path to the file

•   name - Extended attribute name to get or set

Options:

-h, --help
    Shows the help message

  listxattr

List extended attribute names associated with the path

Usage : listxattr [-h] <path>

•   path - Path to the file

Options:

-h, --help
    Shows the help message

  df

Display amount of available disk space

Usage : df [-h] [file [file ...]]

•   file - name of the file

Options:

-h, --help
    Shows the help message

  du

Show disk usage of a directory

Usage : du [-h] [-r] [paths [paths ...]]

•   paths - name of the directory

Options:

-h, --help
    Shows the help message

-r  Recursive Disk usage of all directories

  quota

Quota management for a Directory

Usage : quota [-h] [--max_bytes [MAX_BYTES]] [--max_files [MAX_FILES]] {get,set} path

•   {get,set} - quota operation type.

•   path - name of the directory.

Options :

-h, --help
    Shows the help message

--max_bytes MAX_BYTES
    Set max cumulative size of the data under this directory

--max_files MAX_FILES
    Set total number of files under this directory tree

CEPHFS SHELL CONFIGURATION FILE

By default, CephFS Shell looks for cephfs-shell.conf in the path provided by the environment variable CEPHFS_SHELL_CONF and then in user's home directory (~/.cephfs-shell.conf).

Right now, CephFS Shell inherits all its options from its dependency cmd2. Therefore, these options might vary with the version of cmd2 installed on your system. Refer to cmd2 docs for a description of these options.

Following is a sample cephfs-shell.conf

    [cephfs-shell]
    prompt = CephFS:~/>>>
    continuation_prompt = >
    quiet = False
    timing = False
    colors = True
    debug = False
    abbrev = False
    autorun_on_edit = False
    echo = False
    editor = vim
    feedback_to_output = False
    locals_in_py = True

EXIT CODE

Following exit codes are returned by cephfs shell
Error Type | Exit Code
Miscellaneous | 1
Keyboard Interrupt | 2
Operation not permitted | 3
Permission denied | 4
No such file or directory | 5
I/O error | 6
No space left on device | 7
File exists | 8
No data available | 9
Invalid argument | 10
Operation not supported on transport endpoint | 11
Range error | 12
Operation would block | 13
Directory not empty | 14
Not a directory | 15
Disk quota exceeded | 16
Broken pipe | 17
Cannot send after transport endpoint shutdown | 18
Connection aborted | 19
Connection refused | 20
Connection reset | 21
Interrupted function call | 22

FILES

~/.cephfs-shell.conf

Copyright
2010-2014, Inktank Storage, Inc. and contributors. Licensed under Creative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)