DOESN'T WORK WITH REISERFS!!!!!!!!


Solaris
    "ufsdump" ("dump" is another program).
    Can specify dump file like hostname:/path, I think (see man page), in
    which case, it'll use rlogin or rsh.

Remainder of this file is about Linux dump.

"dump".

Commonly useful switches
    -0       0 level
    -j[2]    per-block compression level with bzlib.  Performance?
    -z[2]    per-block compression level with zlib.  Better compression.
    -y       per-block compression with lzo.  Faster.
    -L label (16 char. max)
    -q       Abort if operator attention is required

Better to use dump to break backup into multiple volumes than dd.
dd is very slow at the breaking.
    If writing locally, then specify output volume size with block
    count options.
        dump -0 -B 5 -f basename -M
        (where 5 is output kB per volume)
        -M generates names like basename.001, basename.002,...
        OR
        dump -0 -B 5 -f - -F path/to/volchange/script |...

    If writing remotely, make a receiver that runs dd with bs= and
    count= options so that EOFs will be returned to tell dump to
    start a new volume.

    For the latter,
        dump