[rhelv6-beta-list] My first experiences with RHEL6 beta

[Brobald Vincent (DTSBE)]

Hi, 

In the lvm world, you can simply do a pvcreate on your new disk, a
vgextend to insert it in the volume group, a pvmove to migrate your
datas, a pvremove to suppress you old disk, and then an lvresize -r to
extend your logical volume and filesystem...

Can be done online without any downtime (just an impact on
performances).

Regards.


-----Original Message-----
From: rhelv6-beta-list-bounces at redhat.com
[mailto:rhelv6-beta-list-bounces at redhat.com] On Behalf Of John
Summerfield
Sent: woensdag 16 juni 2010 11:28
To: Red Hat Enterprise Linux 6 (Santiago) Beta releases
discussionmailing-list
Subject: Re: [rhelv6-beta-list] My first experiences with RHEL6 beta

Jon Masters wrote:
> On Sat, 2010-06-12 at 13:40 -0400, Nico Kadel-Garcia wrote:
> 
>> While LVM is useful for re-allocating disk space for alternative 
>> partition layouts, and its snapshot capability is very useful in some

>> environments, and it can handle this reasonably gracefully, it does 
>> absolutely nothing for resizing the filesystems.
> 
> Filesystems can generally be resized (not always live) and then the 
> volume that contains them can be resized accordingly. Using LVM 
> provides this option, whereas using a raw disk partition or device
does not.


The only times I've felt the need to resize filesystems has been when
replacing disks, because the old one is too small. Generally, I don't
even have the option of retaining the old one.

The process is to partition new drive, copy data (often using dd), then
resize target filesystem.

LVM offers me nothing but an extra step or two.




-- 

Cheers
John

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