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Date:  Thu, 1 Nov 2007 18:19:48 -0000
From:  "Colin Jack" <colin (at mark) mainline.co.uk>
Subject:  [coba-e:11049] Re: Changing partition size
To:  <coba-e (at mark) bluequartz.org>
Message-Id:  <683F5FB5E2C08E4A8FE8D499A890A3EA037375 (at mark) mainserver.mainline.local>
References:  <683F5FB5E2C08E4A8FE8D499A890A3EA03736B (at mark) mainserver.mainline.local> <472A0C93.5040209 (at mark) dogsbody.org>
X-Mail-Count: 11049



> -----Original Message-----
> From: Dogsbody [mailto:dan (at mark) dogsbody.org]
> Sent: Thursday, November 01, 2007 5:28 PM
> To: coba-e (at mark) bluequartz.org
> Subject: [coba-e:11047] Re: Changing partition size
> 
> 
> > Sorry if this is a bit of a noob question ... but I need to reduce
the
> > size of my /var and add it to the /home.
> >
> > This is just a temp solution whilst we organise some bigger drives,
but
> > it will solve the immediate problem.
> >
> > I have seen a friend do this by typing furiously at the CLI but
haven't
> > done it myself, particularly on an active server!
> 
> 
> While it's easy enough now to grow partitions the act of making them
> smaller is rather risky for obvious reasons not to mention that all of
> this needs to be done with the partitions unmounted which means
downtime
> and usually booting from a separate boot CD (to avoid having to mount
> the drives).
> 
> If this is just a temporary thing then your best bet is to move
> directories to the new partition and sym link them.  This used to be a
> problem on the raq4 and the /usr partition.  The fix was...
> 
> mkdir /home/usr
> cd /usr
> mv doc /home/usr
> ln -s /home/usr/doc
> mv man /home/usr
> ln -s /home/usr/man
> mv info /home/usr
> ln -s /home/usr/info
> 
> ... you may want to be a bit more careful in /var , try and pick
> directories that aren't being actively used by applications.
> 
> Dan

Thanks Dan,

Point taken re unmounting disks.

Just out of interest (I'm not going to try it) ... how do I
grow/shrink/move partitions?

If for example I just stuck another pair of mirrored drives in for the
/home partition then how do I tell CentOS/BQ?

Regards

Colin




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