[dm-devel] mirrored device with thousand of mappingtableentries
Eli Malul
eli.malul at kaminario.com
Mon Feb 28 13:42:34 UTC 2011
According to your suggestion I need to map the non contiguous extents
into linear devices and mirror them.
But, what if I am required to preserve the original extent's offset?
Since I need to mirror an existing device with user data already on
it...
-----Original Message-----
From: Alasdair G Kergon [mailto:agk at redhat.com]
Sent: Monday, February 28, 2011 3:29 PM
To: Eli Malul
Cc: device-mapper development
Subject: Re: [dm-devel] mirrored device with thousand of
mappingtableentries
On Mon, Feb 28, 2011 at 03:13:42PM +0200, Eli Malul wrote:
> But, do you know why having 10,000 extents is causing this
overwhelming
> memory usage?
Nobody considered having a huge number of tiny mirrors reasonable or
necessary
so no attempt has been made to optimise that situation.
Alasdair
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