[SLUG] LPI 1.102.1 design hard disc layout

[Stephen O'Neill]

Jonathan Worthington wrote:

> I think one of the main differences between EXT2 and EXT3 is that EXT3 
> is a journalling file system (well, it journals the meta-data 
> anyway).  So this means that if you have a crash and reboot and need 
> to do a disk check/recovery, this can happen a lot faster on EXT3 as 
> there's a journal/log saying what was being looked at when the failure 
> happened.  So I guess that matters to a sysadmin somewhat.  The grotty 
> implementation details are interesting, no doubt, but I guess not 
> something the everyday sysadmin need care about. 

I was thinking along the lines that if it's all automated and you never 
need know about it then it may not be relevant to a sysadmin... 
following that train of thought do you happen to know if there are 
utilities for manipulating the journal? E.g. is it something that you 
could initiate a restore to a point in time from?

Obviously such stupid questions are replacing any active reading in the 
area by picking the nearest person's brains.

Steve

	
	
		
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