[linux-lvm] Total free space using added VGs and LVs

Stuart D. Gathman stuart at bmsi.com
Sat Oct 24 22:04:05 UTC 2009

On Sat, 24 Oct 2009, brem belguebli wrote:

> >> It's non sense arguing that LVM is not intended for root due to the
> >> fact that you cannot shrink it  (growing online is operational and
> >> works fine).
> >>
> >> This is the only thing that is not allowed, though technically could
> >> it be possible.

On some installs, I take the AIX approach an allocate a smallish / filesystem,
with others mounted.  If you can go to single user mode, you can unmount the
other filesystems (e.g. /usr) for shrinkage.  This doesn't, of course, meet the
goal of shrinking while in actual operation.

You can get closer by running production in a virtual machine (I like
xen).  Then you can shutdown, resize, and boot a VM without shutting
down the host.

	      Stuart D. Gathman <stuart at bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

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