DragonFly BSD
DragonFly kernel List (threaded) for 2005-07
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Re: Filesystem Journaling Update II - July 2005

From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 6 Jul 2005 11:06:58 -0700 (PDT)

:What about the client side? I mean, if you journal on a socket, and that=20
:socket is connected to some other BSD machine, surely that other box could=
:run a daemon that has raw access to some disk to facilitate the journalling=
:If the client side is all userland, it could be possible, yes? Imagine havi=
:DFBSD journal to some other box that has heaps and heaps of disk. Heck,=20
:imagine having a whole cluster of DFBSD boxen stream their journals to some=
:large SAN :)

    Sure.  All the userland programs could trivially be ported.  It's the
    kernel side that would be difficult.

    And, yes, the idea here is to use the journaling to mirror off-machine,
    to a 'backup' box on the LAN and from there completely off-site to 
    backup boxes out on the internet... and for all of that to work in a 
    robust fashion.


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