From: Chris Murphy <lists@colorremedies.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Lvm RAID0 vs lvm striping
Date: Wed, 3 Jul 2019 09:45:00 -0600 [thread overview]
Message-ID: <CAJCQCtR-5CynVzg3TSbUCr8CcK76H=adQHmvGB8sBK3Oj7LFUg@mail.gmail.com> (raw)
In-Reply-To: <D1D4AF7B-074F-4F13-9A23-23694F162675@globalnoc.iu.edu>
On Wed, Jul 3, 2019 at 2:33 AM John Ratliff <jdratlif@globalnoc.iu.edu> wrote:
>
> What is the difference between these two?
>
If the question is about segment type, raid0 and raid1 use the md
driver code (same kernel code the mdadm raid uses, but is managed with
LVM metadata and user space tools). And striped and mirror use an
internal implementation, although I'm not sure if this is internal to
LVM or device-mapper, and I think are considered legacy at this point.
'man 7 lvmraid' doesn't directly answer your question but contains
quite a lot of information about lvmraid. It does explicitly say to
use raid1 over mirror segment type. It doesn't say that about raid0 vs
stripe segment type, maybe the two implementations aren't all that
different but anyway I would use raid0.
--
Chris Murphy
next prev parent reply other threads:[~2019-07-03 15:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-02 15:53 [linux-lvm] Lvm RAID0 vs lvm striping John Ratliff
2019-07-03 15:45 ` Chris Murphy [this message]
2019-07-04 22:45 ` Heinz Mauelshagen
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