OnWorks favicon

mkfs.s3ql - Online in the Cloud

Run mkfs.s3ql in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command mkfs.s3ql that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



mkfs.s3ql - Create an S3QL file system


mkfs.s3ql [options] <storage url>


S3QL is a file system for online data storage. Before using S3QL, make sure to consult the
full documentation (rather than just the man pages which only briefly document the
available userspace commands).

The mkfs.s3ql command creates a new file system in the location specified by storage url.
The storage url depends on the backend that is used. The S3QL User's Guide should be
consulted for a description of the available backends.

Unless you have specified the --plain option, mkfs.s3ql will ask you to enter an
encryption password. This password will not be read from an authentication file specified
with the --authfile option to prevent accidental creation of an encrypted file system.


The mkfs.s3ql command accepts the following options.

--cachedir <path>
Store cached data in this directory (default: ~/.s3ql)

--authfile <path>
Read authentication credentials from this file (default: ~/.s3ql/authinfo2)

--debug-modules <modules>
Activate debugging output from specified modules (use commas to separate
multiple modules). Debug messages will be written to the target specified by the
--log option.

Activate debugging output from all S3QL modules. Debug messages will be written
to the target specified by the --log option.

be really quiet

--backend-options <options>
Backend specific options (separate by commas). See backend documentation for
available options.

just print program version and exit

-L <name>
Filesystem label

--max-obj-size <size>
Maximum size of storage objects in KiB. Files bigger than this will be spread
over multiple objects in the storage backend. Default: 10240 KiB.

Create unencrypted file system.

Overwrite any existing data.


mkfs.s3ql may terminate with the following exit codes:

0 Everything went well.

1 An unexpected error occured. This may indicate a bug in the program.

2 Invalid command line argument.

3 Invalid backend option.

11 No such backend.

12 Authentication file has insecure permissions.

13 Unable to parse proxy settings.

14 Invalid credentials (Authentication failed).

15 No permission to access backend (Authorization denied).

16 Invalid storage URL, specified location does not exist in backend.

19 Unable to connect to backend, can't resolve hostname.

45 Unable to access cache directory.

Use mkfs.s3ql online using onworks.net services

Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Alt-F provides a free and open source
    alternative firmware for the DLINK
    DNS-320/320L/321/323/325/327L and
    DNR-322L. Alt-F has Samba and NFS;
    supports ext2/3/4...
    Download Alt-F
  • 2
    Usm is a unified slackware package
    manager that handles automatic
    dependency resolution. It unifies
    various package repositories including
    slackware, slacky, p...
    Download usm
  • 3
    Chart.js is a Javascript library that
    allows designers and developers to draw
    all kinds of charts using the HTML5
    canvas element. Chart js offers a great
    array ...
    Download Chart.js
  • 4
    iReport-Designer for JasperReports
    iReport-Designer for JasperReports
    NOTE: iReport/Jaspersoft Studio Support
    Announcement: As of version 5.5.0,
    Jaspersoft Studio will be the official
    design client for JasperReports. iReport
    Download iReport-Designer for JasperReports
  • 5
    PostInstallerF will install all the
    software that Fedora Linux and others
    doesn't include by default, after
    running Fedora for the first time. Its
    easy for...
    Download PostInstallerF
  • 6
    The strace project has been moved to
    https://strace.io. strace is a
    diagnostic, debugging and instructional
    userspace tracer for Linux. It is used
    to monitor a...
    Download strace
  • More »

Linux commands