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[20050428]
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NetBSD: Live disk backup
der Mouse has developed a system to intercept
block read/write operations in disk drivers (wd, sd) in realtime,
and mirror them over a network to a remote process which will then
write the blocks back to disk. Regardless of the
filesystem used, this will allow a live backup of a "hot" disk, and
if data rate gets too high to transfer blocks (as disks are a bit faster
than networks today ;), the system will fall back to making a list of
blocks that need backup, and will process them when system load's down
again later.
The code is already available for NetBSD 2.0
(and 1.4T, for those still running it 8-), and der Mouse will also
present
the system at BSDCan 2005.
(Pity I didn't have time to accept the invitation when I asked to
come to BSDCan :().
Anyways, see the
README
file to get more information!
[Tags: backup, networking]
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