table of contents
| Deltafs(1) | User Commands | Deltafs(1) |
NAME¶
Deltafs - Delta filesystem daemon
SYNOPSIS¶
deltafs [opts] -o lowerdir=DIR,upperdir=DIR mountpoint
DESCRIPTION¶
Deltafs combines a read-only lower directory and a read-write upper directory into a new filesystem. Currently it works very similarly to a union filesystem, where upon modification whole files are copied up to the upper layer. There are plans to store differences more efficiently in the future.
OPTIONS¶
- -o lowerdir=DIR
- read-only base layer
- -o upperdir=DIR
- read-write layer, stores changes
- -o o_direct=yes
- enable O_DIRECT on lower layer, this might be more efficient but not every filesystem supports it
- -o o_direct=no
- disable O_DIRECT on lower layer (default)
general options:¶
- -o opt,[opt...]
- mount options
- -h --help
- print help
- -V --version
- print version
- -d -o debug
- enable debug output (implies -f)
- -f
- foreground operation
FUSE options:¶
- -o max_read=N
- set maximum size of read requests
- -o max_write=N
- set maximum size of write requests
- -o max_readahead=N
- set maximum readahead
- -o async_read
- perform reads asynchronously (default)
- -o sync_read
- perform reads synchronously
AUTHORS¶
Deltafs has been written by Miklos Szeredi <miklos@szeredi.hu>.
| November 2009 | Deltafs version 1.0 |