From: Alasdair G Kergon <agk@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] [RFC, 2nd try] Let udev play with snapshots
Date: Thu, 26 Oct 2006 19:33:57 +0100 [thread overview]
Message-ID: <20061026183357.GC1319@agk.surrey.redhat.com> (raw)
In-Reply-To: <20061024182158.GC29513@agk.surrey.redhat.com>
On Tue, Oct 24, 2006 at 07:21:58PM +0100, Alasdair G Kergon wrote:
> As discussed on irc, let's try to optimise out the deactivate/activate.
I've checked in an attempt to do this: it turns out that the current
structure of the code allows the simplest approach (skipping the cow
deactivate) to work regardless of whether or not options like --persistent
or --permission are supplied. The 'snapshot' LV mapped device gets created
with the correct properties for the snapshot, but pointing to the cow and it
gets zeroed. Then the cow is activated in a new mapped device and the old
one gets reused for the proper snapshot.
Alasdair
--
agk@redhat.com
prev parent reply other threads:[~2006-10-26 18:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-11 17:34 [linux-lvm] [RFC] Let udev play with snapshots Jan Blunck
2006-10-11 17:46 ` Alasdair G Kergon
2006-10-11 18:08 ` Jan Blunck
2006-10-11 18:17 ` Alasdair G Kergon
2006-10-12 7:13 ` Jan Blunck
2006-10-23 13:41 ` [linux-lvm] [RFC, 2nd try] " Jan Blunck
2006-10-24 18:21 ` Alasdair G Kergon
2006-10-26 18:33 ` Alasdair G Kergon [this message]
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