[linux-lvm] N00b Question: Logical Volume without a Logical Volume Group ?

Marek Podmaka marki at marki-online.net
Thu Nov 3 06:53:28 UTC 2011


Wednesday, November 2, 2011, 16:06:12, Dan White wrote:

> This is on a RHEL 5.7 system.
> Is there a way to do this without the rebooting ?

Each layer must support the resize. For example we had issues with
multipath on SLES10 not being able to see the new LUN size. We were
using md raid1 over 2 LUNs from 2 arrays via multipath. So the only
solution except reboot was to break the mirror, remove device from
multipath, rescan busses so that all paths (/dev/sdX) see the new
size, apply it to multipath again (now it will see the new size) and
re-mirror. Then the same with the other side of mirror, then grow MD
device and finally grow PV. Of course it is not very useful if you
have big LUNs. On SLES11 multipath has command to rescan the new size
of underlying devices.

  bYE, Marki

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