[linux-lvm] Flexible storga: LVM setup on top of mdadm sets. Good idea or not?
Stuart D. Gathman
stuart at bmsi.com
Tue Aug 21 00:33:26 UTC 2007
On Mon, 23 Jul 2007, Luca Berra wrote:
> On Sun, Jul 22, 2007 at 02:57:33PM -0400, Stuart D. Gathman wrote:
> >The main drawback to md raid1 is that it always resynchronizes
> >the *entire* partition when a disk goes offline temporarily. I also
> False. md uses bitmaps to avoid this.
Ok, I just tested this with Centos-5.0, kernel-2.6.18-8.1.8.el5.
I shutdown with md1 50% resynced, and when it boots, it starts over
at the beginning. Maybe we are talking about different things, but
it is a major annoyance that it restarts the sync from the beginning
if it misses just one update (e.g. unexpected power failure or reboot).
Stuart D. Gathman <stuart at bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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