[Linux-cluster] is necesary to to build GFS on top of LVM ?

[Riaan van Niekerk]

Neil Watson wrote:
> Does growing a LUN create un-partitioned space?  

Yes

> That would mean you
> could not add the space to the existing partition without LVM.  Can
> someone confirm that?
> 
You could delete and recreate the partition, then gfs_grow afterwards.
LVM has been designed for growing and extending the device underlying a 
FS, and is much less risky than manipulating the partition table.

Caveat: when growing a big LUN, using parted and gpt, don't get bitten 
by this bug:

Parted segfaults because of extended devices with GPT partition table
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=194238
There are hotfixes out for RHEL 4.4 and patches for the upstream version 
of parted on the bug-parted mailing list

HTH
Riaan
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