[rescue] Mounting and Dumping

Jonathan C. Patschke jp at celestrion.net
Thu Jan 15 10:05:40 CST 2004

On Thu, 15 Jan 2004, Andrew Weiss wrote:

> So why can't a program for backup take in principle a system that is
> going to be backed up at off hours, create a large RAM disk of 1GB or
> so (larger if you can afford it), lock the original filesystem for read
> access only, accept all writes as journal entries to the RAMdisk,

Because you'd either need hooks into the kernel to know who's writing
what where, or you'd need to do continuous filesystem monitoring during
the whole proces.  The former just doesn't happen, and the latter is
computationally (and I/O-wise) expensive in the extreme.

Jonathan Patschke  ) "Some people grow out of the petty theft of
Elgin, TX         (   childhood.  Others grow up to be CEOs and
USA                )  politicians."                    --Phorist

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