[dm-devel] mirrored device with thousand of mappingtableentries
Eli Malul
eli.malul at kaminario.com
Mon Feb 28 13:13:42 UTC 2011
OK, I will try that and check the implications of that, thanks!!
But, do you know why having 10,000 extents is causing this overwhelming
memory usage?
-----Original Message-----
From: Alasdair G Kergon [mailto:agk at redhat.com]
Sent: Monday, February 28, 2011 3:10 PM
To: Eli Malul
Cc: device-mapper development
Subject: Re: [dm-devel] mirrored device with thousand of
mappingtableentries
On Mon, Feb 28, 2011 at 02:17:52PM +0200, Eli Malul wrote:
> I expect to have thousands of non contiguous extents (so I created a
> synthetic mapping table to test the device-mapper behavior).
>
> Any suggestions?
> -----Original Message-----
> From: Alasdair G Kergon [mailto:agk at redhat.com]
> Sent: Monday, February 28, 2011 2:12 PM
> To: Eli Malul
> Cc: device-mapper development
> (And if, unlike that example, your extents are not
> contiguous,
> create two new devices that join them together, and mirror those.
> That's
> what LVM does.)
That.
dm0 = list 0
dm1 = list 1
dm2 = mirror of dm0 and dm1
Alasdair
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