[linux-lvm] Does LVM have the same "Problems" like RAID 0 (Stripping)?

Steven Lembark lembark at wrkhors.com
Thu Sep 26 08:55:59 UTC 2002

-- Stefan Siefert <s.siefert at global-media.de>

> what happens if one of the physical devices of an LV gets damaged? Is the
> whole LV gone (like on a RAID 0 (Stripping)) or are only those data gone
> which where on the physical device?

If one of the PV's goes away then anything striped across
it is lost. If you require a high-uptime system then a
better approach is to use LVM on top of hardware RAID.

Mirroring the PV's gives higher uptime; RAID-5 or -S uses
less space at the expense of bad performance when a drive
goes out. Striping across mirrors is a nice way to aggregate
the space for good speed and availability.

Steven Lembark                               2930 W. Palmer
Workhorse Computing                       Chicago, IL 60647
                                            +1 800 762 1582

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