[linux-lvm] Mirrored LVs

Morten Torstensen morten at mortent.org
Fri Oct 23 18:28:19 UTC 2009

>> Why cannot the mirrorlog be stored persistently in one or more LEs in
>> the LV? Why the need for a seperate PV for this?
> For better redundancy...

In a LE it would be mirrored too and a copy would be in each mirror...

> Use "--alloc anywhere" to place the log LV on one of them when you
> create your mirror.

Yes, but this will have the side effect of not ensuring separate PVs
for the mirrored LV? An the mirror log would still not be mirrored, so
in a failure situation you would still face data loss or force a fully
resync of the mirror.
//morten at mortent.org

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