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From: Joe Thornber <thornber@redhat.com>
To: Mikulas Patocka <mpatocka@redhat.com>
Cc: device-mapper development <dm-devel@redhat.com>,
	"Alasdair G. Kergon" <agk@redhat.com>
Subject: Re: [PATCH 1/2] dm-kcopyd: introduce per-module throttle structure
Date: Fri, 10 Jun 2011 14:48:00 +0100	[thread overview]
Message-ID: <20110610134759.GA10908@ubuntu> (raw)
In-Reply-To: <Pine.LNX.4.64.1106100937430.32120@hs20-bc2-1.build.redhat.com>

On Fri, Jun 10, 2011 at 09:41:50AM -0400, Mikulas Patocka wrote:
> This works if the data is directly on the partition, but it won't work on 
> the device mapper (if MD is on the device mapper, it won't work too).
> 
> The device mapper has no function to tell where the bio is finally 
> remapped, so you can't read disk statistics for that particular disk.

ok, thx

  reply	other threads:[~2011-06-10 13:48 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-31 22:03 [PATCH 1/2] dm-kcopyd: introduce per-module throttle structure Mikulas Patocka
2011-06-01  6:18 ` Ankit Jain
2011-06-01  7:13   ` Ankit Jain
2011-06-02 19:16   ` Mikulas Patocka
2011-06-01  9:51 ` Joe Thornber
2011-06-02 19:55   ` Mikulas Patocka
2011-06-03 11:01     ` Joe Thornber
2011-06-03 15:54       ` Mike Snitzer
2011-06-07 17:50       ` Mikulas Patocka
2011-06-09  9:47         ` Joe Thornber
2011-06-09 16:08           ` Mikulas Patocka
2011-06-09 16:27             ` Alasdair G Kergon
2011-06-10  8:44             ` Joe Thornber
2011-06-10  9:28               ` Lars Ellenberg
2011-06-10 10:14                 ` Joe Thornber
2011-06-10 13:41                   ` Mikulas Patocka
2011-06-10 13:48                     ` Joe Thornber [this message]
2011-06-10 16:13                       ` Lars Ellenberg
2011-06-10 13:51                     ` Mike Snitzer
2011-06-11 20:27               ` Mikulas Patocka
2011-06-13  9:17                 ` Joe Thornber
2011-06-13 21:06                   ` Mikulas Patocka
2011-06-14  8:34                     ` Joe Thornber

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