RFDD

RFDD is similar to the UNIX DD tool. It is used to copy files and convert and format the contents of the original files. It is used to back up physical hard disks, and through RFSD servers, remote file operations are implemented. It is recommended to operate the local or remote physical disk when needed.

Functional characteristics
Help
$ rfdd -h
rfdd v1.1.3.419 (2018-10-10) - convert and copy a file
Copyright (C) 2014-2018 ranfs.com

usage: rfdd [if=FILE] [of=FILE] [ibs=N] [obs=N] [bs=N] [count=N] [skip=N]
[seek=N] conv=[notrunc|noerror|sync|fsync|resume] retry=NUM
status=[noxfer|none] level=[LEVEL]
	bs=BYTES    read and write BYTES bytes at a time
	ibs=N       Read N bytes at a time
	obs=N       Write N bytes at a time
	count=N     copy only N input blocksn
	seek=BLOCKS skip BLOCKS obs-sized blocks at start of output
	skip=BLOCKS skip BLOCKS ibs-sized blocks at start of input
	if=FILE     read from FILE instead of stdin
	of=FILE     write to FILE instead of stdout
	conv=CONVS  [notrunc,noerror,sync,fsync,swab,resume,]
	conv=notrunc   Don't truncate output file
	conv=noerror   Continue after read errors
	conv=sync      Pad blocks with zeros
	conv=fsync     Physically write data out before finishing
	conv=swab      Swap every pair of bytes
	conv=resume    Continue writing at the end of the output file
	iflag=skip_bytes skip=N is in bytes
	oflag=seek_bytes seek=N is in bytes
	retry=NUM      Retry request NUM times if transient problems occur
	status=noxfer  Suppress rate output
	status=none    Suppress all output
	level=LEVEL    set log level: [verb, dbg, info, warn, err]


may be suffixed by b(512), kB(1000), k(1024), MB(1000000), M, GB, G, TB, T
Examples

Assuming RFSD is running on a 192.168.1.1 Linux system, it is now necessary to back up the hard disk data locally to the windows d:\1.img

rfdd if=rfp://192.168.1.1/dev/sda of=d:\1.img bs=512k

Note: bs defaults to 512 bytes and reads 512 bytes at a time. The reading speed will be slow, so it is recommended that bs>=200K.


Related resources
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