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disorderfs - Online in the Cloud

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This is the command disorderfs 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



disorderfs - FUSE filesystem that introduces non-determinism




disorderfs is an overlay FUSE filesystem that introduces non-determinism into filesystem
metadata. For example, it can randomize the order in which directory entries are read.
This is useful for detecting non-determinism in the build process.

ROOTDIR is the absolute path to the underlying directory that is to be mirrored, and
MOUNTPOINT is where the overlay should be mounted.


See fusermount(1), mount.fuse(8), and mount(8) for a full list of options.

Options specific to disorderfs:

Whether or not to allow other users to access the overlay mount (default: no). When
enabled, disorderfs accesses the underlying file with the same credentials (user ID,
group ID, supplemental group list) as the process accessing the overlaid file. This is
different from FUSE’s allow_other option, which allows other users access, but causes
disorderfs to access the underlying filesystem with the credentials of the user
running disorderfs, which is usually undesirable. --multi-user=yes requires
disorderfs to run as root.

Whether or not to randomly shuffle directory entries (default: no). The directory
entries are shuffled every time the directory is read, so repeated reads of the same
directory will probably return different results.

Whether or not to return directory entries in reverse order (default: yes).

Add N to the st_blocks field in struct stat(2) (default: 1).

Whether or not to share locks between disorderfs and the underlying filesystem
(default: no). When this option is enabled, locks created on the underlying filesystem
are visible within disorderfs, and vice-versa. When this option is disabled, locks
still work within disorderfs, but if one process accesses the underlying filesystem
directly, and another process accesses through disorderfs, they won’t see each others'

Lock sharing is currently buggy, so it is disabled by default.

--help, -h
Display help.

--version, -V
Display the version.

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