[CentOS] Looking for experiences with filesystem choices....

Les Mikesell lesmikesell at gmail.com
Sun Mar 21 22:08:34 UTC 2010


JohnS wrote:
> 
> 
> BUT: Since you have one server get a good raid 1 sata card and use it
> like arecca.  You don't have to invest a fortune in it.  Finally rsynce
> is going to bite you in the a$$ copying live data.  It may work perfect
> for the first few times but in the end it will get you.  You have to be
> willing to sacrifice data speed for reliability.   Data speed is crap
> when it come to reliable data.  Ask yourself if you want your precious
> data from 5 years ago or that 1Gig line speed???

Rsync is actually about as good as it gets at copying live data.  It can't get a 
good copy of a file that changes while the copy is made, but neither can 
anything else and it's speed makes the odds better.  One thing you can do with 
rsync is make a 2nd run with the -v option.  This will only copy (and list) 
files that have changed since the 1st pass so you can see if anything important 
is open and active.  If the 2nd run does not list any files - or if they are 
just things like growing logfiles, you should have a clean copy.

-- 
   Les Mikesell
    lesmikesell at gmail.com





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