Ubuntu Manpage: mount.s3ql - Mount an S3QL file system

NAME

       mount.s3ql - Mount an S3QL file system

SYNOPSIS

          mount.s3ql [options] <storage url> <mount point>

DESCRIPTION

       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  mount.s3ql  command  mounts the S3QL file system stored in storage url in the directory mount point.
       The format of 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.

OPTIONS

The mount.s3ql command accepts the following options.

--log <target>
Destination for log messages. Specify none for standard output or syslog for the system logging
daemon. Anything else will be interpreted as a file name. Log files will be rotated when they
reach 1 MiB, and at most 5 old log files will be kept. Default: ~/.s3ql/mount.log

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

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

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

--quiet
be really quiet

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

--version
just print program version and exit

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

--compress <algorithm-lvl>
Compression algorithm and compression level to use when storing new data. algorithm may be any
of lzma, bzip2, zlib, or none. lvl may be any integer from 0 (fastest) to 9 (slowest). Default:
lzma-6

--cachesize <size>
Cache size in KiB (default: autodetect).

--max-cache-entries <num>
Maximum number of entries in cache (default: autodetect). Each cache entry requires one file
descriptor, so if you increase this number you have to make sure that your process file
descriptor limit (as set with ulimit -n) is high enough (at least the number of cache entries +
100).

--keep-cache
Do not purge locally cached files on exit.

--allow-other
Normally, only the user who called mount.s3ql can access the mount point. This user then also
has full access to it, independent of individual file permissions. If the --allow-other option
is specified, other users can access the mount point as well and individual file permissions
are taken into account for all users.

--allow-root
Like --allow-other, but restrict access to the mounting user and the root user.

--dirty-block-upload-delay <seconds>
Upload delay for dirty blocks in seconds (default: 10 seconds).

--fg Do not daemonize, stay in foreground

--fs-name FS_NAME
Mount name passed to fuse, the name will be shown in the first column of the system mount
command output. If not specified your storage url is used.

--systemd
Run as systemd unit. Consider specifying --log none as well to make use of journald.

--metadata-backup-interval <seconds>
Interval between metadata backups. Should the filesystem crash while mounted, modifications
made after the most recent metadata backup may be lost. During backups, the filesystem will be
unresponsile. Default: 6h

--threads <no>
Number of parallel upload threads to use (default: auto).

--nfs Enable some optimizations for exporting the file system over NFS. (default: False)

EXIT CODES

       mount.s3ql may terminate with the following exit codes:

       0      Everything went well.

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

       2      Invalid command line argument or configuration file key.

       3      Invalid backend option.

       10     Could not open log file for writing.

       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.

       17     Wrong file system passphrase.

       18     No S3QL file system found at given storage URL.

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

       30     File system was not unmounted cleanly.

       31     File system appears to be mounted elsewhere.

       32     Unsupported file system revision (too old).

       33     Unsupported file system revision (too new).

       34     Insufficient free nodes, need to run fsck.s3ql.

       35     Attempted to mount read-only, this is not supported.

       36     Mountpoint does not exist.

       37     Not enough available file descriptors.

       39     Unable to bind file system to mountpoint.

       45     Unable to access cache directory.

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