* [linux-lvm] collapse (merge) snapshot into origin
@ 2007-09-06 17:06 Brian J. Murrell
2007-09-06 17:13 ` Brian J. Murrell
0 siblings, 1 reply; 5+ messages in thread
From: Brian J. Murrell @ 2007-09-06 17:06 UTC (permalink / raw)
To: linux-lvm
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There was, at one time, a patch floating around (from a fedora project
IIRC) that would allow one to merge a snapshot into it's origin. Anyone
know the whereabouts of that? Or more importantly if such a feature is
being considered for an official LVM release?
b.
--
My other computer is your Microsoft Windows server.
Brian J. Murrell
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* Re: [linux-lvm] collapse (merge) snapshot into origin
2007-09-06 17:06 [linux-lvm] collapse (merge) snapshot into origin Brian J. Murrell
@ 2007-09-06 17:13 ` Brian J. Murrell
2007-09-06 19:09 ` Alasdair G Kergon
0 siblings, 1 reply; 5+ messages in thread
From: Brian J. Murrell @ 2007-09-06 17:13 UTC (permalink / raw)
To: LVM general discussion and development
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Damn. I hate that... to answer at least one of my questions...
On Thu, 2007-09-06 at 13:06 -0400, Brian J. Murrell wrote:
> There was, at one time, a patch floating around
http://www.gnome.org/~markmc/code/lvm-snapshot-merging/
> (from a fedora project
http://fedoraproject.org/wiki/StatelessLinuxCachedClient
I guess that just leaves this question:
> [is] such a feature is
> being considered for an official LVM release?
b.
--
My other computer is your Microsoft Windows server.
Brian J. Murrell
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* Re: [linux-lvm] collapse (merge) snapshot into origin
2007-09-06 17:13 ` Brian J. Murrell
@ 2007-09-06 19:09 ` Alasdair G Kergon
2009-09-23 22:20 ` [linux-lvm] " Brian J. Murrell
0 siblings, 1 reply; 5+ messages in thread
From: Alasdair G Kergon @ 2007-09-06 19:09 UTC (permalink / raw)
To: LVM general discussion and development
On Thu, Sep 06, 2007 at 01:13:50PM -0400, Brian J. Murrell wrote:
> On Thu, 2007-09-06 at 13:06 -0400, Brian J. Murrell wrote:
> > [is] such a feature is
> > being considered for an official LVM release?
Snapshot merging: yes.
The patches depended on another change (tracking all snapshot I/O to eliminate
theoretical races) that's still outstanding, but once that's dealt with (it's
tricky - my original proof-of-concept patch was ~800 lines so needed breaking
up and rewriting), I expect them to follow quite quickly.
Alasdair
--
agk@redhat.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* [linux-lvm] Re: collapse (merge) snapshot into origin
2007-09-06 19:09 ` Alasdair G Kergon
@ 2009-09-23 22:20 ` Brian J. Murrell
2009-09-23 22:39 ` Alasdair G Kergon
0 siblings, 1 reply; 5+ messages in thread
From: Brian J. Murrell @ 2009-09-23 22:20 UTC (permalink / raw)
To: linux-lvm
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On Thu, 2007-09-06 at 20:09 +0100, Alasdair G Kergon wrote:
> On Thu, Sep 06, 2007 at 01:13:50PM -0400, Brian J. Murrell wrote:
> > > being considered for an official LVM release?
>
> Snapshot merging: yes.
> The patches depended on another change (tracking all snapshot I/O to eliminate
> theoretical races) that's still outstanding, but once that's dealt with (it's
> tricky - my original proof-of-concept patch was ~800 lines so needed breaking
> up and rewriting), I expect them to follow quite quickly.
Any progress on this?
b.
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end of thread, other threads:[~2009-09-23 22:39 UTC | newest]
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2007-09-06 17:06 [linux-lvm] collapse (merge) snapshot into origin Brian J. Murrell
2007-09-06 17:13 ` Brian J. Murrell
2007-09-06 19:09 ` Alasdair G Kergon
2009-09-23 22:20 ` [linux-lvm] " Brian J. Murrell
2009-09-23 22:39 ` Alasdair G Kergon
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