* [linux-lvm] Snapshot validity
@ 2004-02-29 23:26 sachin
2004-03-01 8:19 ` Heinz Mauelshagen
0 siblings, 1 reply; 6+ messages in thread
From: sachin @ 2004-02-29 23:26 UTC (permalink / raw)
To: linux-lvm
> Hi All
>
> I have a question.
LVM1 or LVM2 ?
- Joe
Hi All
I am using lvm1
-SachiN_
_==__==__==__==__==__==__==_
Original messagel was
Hi All
I have a question.
What happen if i have change the configuration of the snapshot origin volume
i.e i may change the size of the volume .Is the snapshot is valid or its of
no use
What i think is data is of no use ,because internally the driver may
checking the
extent mapping of the origin of the snapshot and then it scanning the
ioexception table
i.e COW table .If my assumption is not correct ,If any one knows the actual
working
Please tell me .
Thanks
SachiN_
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [linux-lvm] Snapshot validity
2004-02-29 23:26 [linux-lvm] Snapshot validity sachin
@ 2004-03-01 8:19 ` Heinz Mauelshagen
2004-03-01 8:30 ` Joe Thornber
0 siblings, 1 reply; 6+ messages in thread
From: Heinz Mauelshagen @ 2004-03-01 8:19 UTC (permalink / raw)
To: linux-lvm
Sachin,
you can resize original logical volumes and their snapshots
and they stay valid.
Regards,
Heinz -- The LVM Guy --
On Mon, Mar 01, 2004 at 10:02:17AM -0800, sachin wrote:
>
> > Hi All
> >
> > I have a question.
>
> LVM1 or LVM2 ?
>
> - Joe
>
> Hi All
>
> I am using lvm1
>
> -SachiN_
>
> _==__==__==__==__==__==__==_
>
> Original messagel was
>
>
> Hi All
>
> I have a question.
> What happen if i have change the configuration of the snapshot origin volume
> i.e i may change the size of the volume .Is the snapshot is valid or its of
> no use
>
> What i think is data is of no use ,because internally the driver may
> checking the
> extent mapping of the origin of the snapshot and then it scanning the
> ioexception table
> i.e COW table .If my assumption is not correct ,If any one knows the actual
> working
> Please tell me .
>
> Thanks
> SachiN_
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Red Hat GmbH
Consulting Development Engineer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen@RedHat.com +49 2626 141200
FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [linux-lvm] Snapshot validity
2004-03-01 8:19 ` Heinz Mauelshagen
@ 2004-03-01 8:30 ` Joe Thornber
0 siblings, 0 replies; 6+ messages in thread
From: Joe Thornber @ 2004-03-01 8:30 UTC (permalink / raw)
To: linux-lvm
On Mon, Mar 01, 2004 at 02:20:47PM +0100, Heinz Mauelshagen wrote:
>
> Sachin,
>
> you can resize original logical volumes and their snapshots
> and they stay valid.
This scenario worries me:
- create a snapshot
- exceptions are triggered on the back half of the volume
- shrink volume to half its size
- use recovered space from back half for something else temporarily
- extend origin back to the old size
How does LVM1 deal with this ?
- Joe
^ permalink raw reply [flat|nested] 6+ messages in thread
* [linux-lvm] Snapshot validity
@ 2004-03-01 14:15 sachin
0 siblings, 0 replies; 6+ messages in thread
From: sachin @ 2004-03-01 14:15 UTC (permalink / raw)
To: linux-lvm
[-- Attachment #1: Type: text/plain, Size: 677 bytes --]
> Hi All
>
> I have a question.
LVM1 or LVM2 ?
- Joe
Hi All
I am using lvm1
-SachiN_
_==__==__==__==__==__==__==_
Original messagel was
Hi All
I have a question.
What happen if i have change the configuration of the snapshot origin volume
i.e i may change the size of the volume .Is the snapshot is valid or its of
no use
What i think is data is of no use ,because internally the driver may
checking the
extent mapping of the origin of the snapshot and then it scanning the
ioexception table
i.e COW table .If my assumption is not correct ,If any one knows the actual
working
Please tell me .
Thanks
SachiN_
[-- Attachment #2: Type: text/html, Size: 1583 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* [linux-lvm] Snapshot validity
@ 2004-02-27 1:15 sachin
2004-02-27 3:58 ` Joe Thornber
0 siblings, 1 reply; 6+ messages in thread
From: sachin @ 2004-02-27 1:15 UTC (permalink / raw)
To: linux-lvm
Hi All
I have a question.
What happen if i have change the configuration of the snapshot origin volume
i.e i may change the size of the volume .Is the snapshot is valid or its of
no use
What i think is data is of no use ,because internally the driver may
checking the
extent mapping of the origin of the snapshot and then it scanning the
ioexception table
i.e COW table .If my assumption is not correct ,If any one knows the actual
working
Please tell me .
Thanks
SachiN_
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2004-03-01 13:32 UTC | newest]
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2004-02-29 23:26 [linux-lvm] Snapshot validity sachin
2004-03-01 8:19 ` Heinz Mauelshagen
2004-03-01 8:30 ` Joe Thornber
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2004-03-01 14:15 sachin
2004-02-27 1:15 sachin
2004-02-27 3:58 ` Joe Thornber
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