[K12OSN] Damn, they are moving fast

Dan Young dan_young at parkrose.k12.or.us
Wed Nov 10 03:38:28 UTC 2004


On Tue, 2004-11-09 at 20:50 -0500, Brian Chase wrote:
> Not sure what this means, but FC3 partitioning looks very different, 
> didn't get screenshot, but I think it uses LVM by default.  Logical 
> Volume Management, hmmm.  Just started reading about it but don't know 
> the benefits yet.  Comments....?

Virtualization of volumes means you're less limited by physical disks
and partitioning as a method of assigning storage.

You can slice and dice volumes more ways (as well as append one disk to
another, etc.), and do so dynamically w/o necessarily b0rking your data,
at least when used w/ a filesystem that can be resized. Ext3 and XFS I
know can do this, though I think XFS can grow only, not shrink. FC3 also
includes _online_ resize for ext3:

http://download.fedora.redhat.com/pub/fedora/linux/core/3/i386/os/RELEASE-NOTES-en.html

So if you run out of disk space for /home, slap more disks into your
hotplug SCSI backplane, label as LVM, pvcreate, vgextend, lvextend,
<mumble, mumble> and extend /home. That's the concept, anyway.

--
Dan Young
Parkrose School District




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