[rhelv6-list] Antwort: Re: Antwort: MD devices lost after boot

[Roth, Sandro]

IMHO mdadm is much more sophisticated than lvm mirroring.

In my case here, we have two storage subsystems, one in each data center.
An LVM mirror needs to put a log somewhere, usually on a third disk, we just don't have that!
And placing the log in memory makes you rebuild it after every reboot.

-----Original Message-----
From: rhelv6-list-bounces at redhat.com [mailto:rhelv6-list-bounces at redhat.com] On Behalf Of Gianluca Cecchi
Sent: Donnerstag, 27. September 2012 10:12
To: Red Hat Enterprise Linux 6 (Santiago) discussion mailing-list
Subject: Re: [rhelv6-list] Antwort: Re: Antwort: MD devices lost after boot

On Thu, Sep 27, 2012 at 10:03 AM, Andreas Reschke wrote:
>> > We have a setup which uses lvm over md over multipath devices. (at 
>> > least that’s the plan)

Just to understand, apart from /boot (referred in tech note), what would be the advantage of using this kind of config instead of configuring
mpath0 as a PV1
mpath1 as PV2

and then create VG with PV1 and PV2 and all LVs as mirrored?
Gianluca

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