[mythtv] Problems with using LVM for large storage
Scott Carroll
lists at scottc.net
Mon May 16 17:33:27 UTC 2005
> One of the main drawbacks I see to an LVM is the inability to
> upgrade a disk. If I want to pull a 120GB drive out of the LVM and
> drop in a 300 GB, it might actually be possible, but a massive in
> the arse to do.
Have you looked at EVMS? ( http://evms.sourceforge.net/ )
It's a disk management system, developed by IBM, with a GUI and an
ncurses frontend. It sits on top of LVM 1 or 2 and the md drivers,
so you can import your existing volumes.
The interface allows you to make a string of changes, check that you
have what you want, *then* commit them to disk. Despite a lot of
messing around, I have yet to lose a single bit of data stored under
EVMS.
It's support of LVM1 wasn't great (in terms of being able to move
around extents), but LVM2 is good. If what you're trying to do makes
sense, the chances are EVMS will do it for you. And there's plenty
of clear documentation on the site.
Scott c
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