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



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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