From: "Brian J. Murrell" <brian@interlinx.bc.ca>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Using LVM Mirroring to obtain a usable backup
Date: Thu, 17 Sep 2009 19:48:07 -0400 [thread overview]
Message-ID: <1253231287.2339.754.camel@pc.interlinx.bc.ca> (raw)
In-Reply-To: <Pine.LNX.4.64.0909171844470.9058@bmsred.bmsi.com>
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On Thu, 2009-09-17 at 18:49 -0400, Stuart D. Gathman wrote:
>
> 1) Eventually you still need to copy the snapshot to a normal LV to get
> your performance back
Will you? When you are using the snapshot instead of the origin, you
are writing to the COW already, not writing to the origin which requires
a COW copy-out.
> 2) (minor, but important) Another FAQ is "exactly how big do I need to make my
> snapshot so that it is guaranteed never to overflow".
Heh. Yeah.
b.
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next prev parent reply other threads:[~2009-09-17 23:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-16 13:59 [linux-lvm] Using LVM Mirroring to obtain a usable backup Ambrogio De Lorenzo
2009-09-16 15:05 ` André Gillibert
2009-09-16 16:47 ` Ambrogio De Lorenzo
2009-09-16 16:58 ` Brian J. Murrell
2009-09-16 19:15 ` Ambrogio De Lorenzo
2009-09-16 19:49 ` Brian J. Murrell
2009-09-16 20:03 ` André Gillibert
2009-09-16 20:22 ` Ambrogio De Lorenzo
2009-09-16 22:03 ` Kai Stian Olstad
2009-09-16 18:19 ` malahal
2009-09-16 19:03 ` Ambrogio De Lorenzo
2009-09-16 20:33 ` malahal
2009-09-17 10:05 ` Bryn M. Reeves
2009-09-17 15:06 ` Stuart D. Gathman
2009-09-17 15:34 ` Brian J. Murrell
2009-09-17 22:49 ` Stuart D. Gathman
2009-09-17 23:26 ` Les Mikesell
2009-09-18 0:58 ` Stuart D. Gathman
2009-09-18 1:51 ` Sven Eschenberg
2009-09-18 16:05 ` Mark H. Wood
2009-09-18 19:12 ` Stuart D. Gathman
2009-09-17 23:48 ` Brian J. Murrell [this message]
2009-09-18 1:55 ` Stuart D. Gathman
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