Mailing List Archive: Netapp: toasters

cannot create incremental snapshot

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lists at up-south

May 8, 2008, 9:59 AM

Post #1 of 4 (326 views)
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cannot create incremental snapshot

trying to snapmirror /qryndbcore/ from irnetapp1 to irfl1

here are the space stats of the volume and general filer

IRNetApp1> df -h qryndbcore
Filesystem total used avail capacity Mounted
on
/vol/qryndbcore/ 1500GB 1361GB 138GB 91%
/vol/qryndbcore/.snapshot 0TB 0TB 0TB ---%

IRNetApp1> df -Ah
Aggregate total used avail capacity
aggr 3537GB 2461GB 1075GB 70%
aggr/.snapshot 884GB 146GB 737GB 17%

IRNetApp1> Thu May 8 09:44:25 PDT [IRNetApp1:
snapmirror.src.err:error]: SnapMirror source transfer from qryndbcore to
irfl2:qryndbcore : cannot create incremental snapshot.

snap reserve is set to 0, however i think that 700gb (on the volume level) should be enough to create a snapshot.

scl at sasha

May 8, 2008, 11:24 AM

Post #2 of 4 (309 views)
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Re: cannot create incremental snapshot [In reply to]

> trying to snapmirror /qryndbcore/ from irnetapp1 to irfl1
>
> here are the space stats of the volume and general filer
>
> IRNetApp1> df -h qryndbcore
> Filesystem total used avail capacity Mounted
> on
> /vol/qryndbcore/ 1500GB 1361GB 138GB 91%
> /vol/qryndbcore/.snapshot 0TB 0TB 0TB ---%
>
> IRNetApp1> df -Ah
> Aggregate total used avail capacity
> aggr 3537GB 2461GB 1075GB 70%
> aggr/.snapshot 884GB 146GB 737GB 17%
>
> IRNetApp1> Thu May 8 09:44:25 PDT [IRNetApp1:
> snapmirror.src.err:error]: SnapMirror source transfer from qryndbcore to
> irfl2:qryndbcore : cannot create incremental snapshot.
>
>
> snap reserve is set to 0, however i think that 700gb (on the volume level) should be enough to create a snapshot.
>

You probably need to set the fractional reserve on the source volume
to zero:

vol options qryndbcore fractional_reserve 0

Steve Losen scl[at]virginia.edu phone: 434-924-0640

University of Virginia ITC Unix Support

lists at up-south

May 8, 2008, 11:34 AM

Post #3 of 4 (308 views)
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Re: cannot create incremental snapshot [In reply to]

Stephen C. Losen wrote:
>
> You probably need to set the fractional reserve on the source volume
> to zero:
>
> vol options qryndbcore fractional_reserve 0
>
>
>
> Steve Losen scl[at]virginia.edu phone: 434-924-0640
>
> University of Virginia ITC Unix Support
>
that did the trick

thanx

Nagender.Somavarapu at netapp

May 12, 2008, 6:10 AM

Post #4 of 4 (274 views)
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RE: cannot create incremental snapshot [In reply to]

Hi Chaim,
setting fractional_reserve to 0 has some side effects with LUNs which
could be undesirable. You may like to understand this option in more
detail before disabling it.

thanks
S Nagender
-----Original Message-----
From: Chaim Rieger [mailto:lists[at]up-south.com]
Sent: Friday, May 09, 2008 12:04 AM
To: Stephen C. Losen
Cc: toasters[at]mathworks.com
Subject: Re: cannot create incremental snapshot

Stephen C. Losen wrote:
>
> You probably need to set the fractional reserve on the source volume
> to zero:
>
> vol options qryndbcore fractional_reserve 0
>
>
>
> Steve Losen scl[at]virginia.edu phone: 434-924-0640
>
> University of Virginia ITC Unix Support
>
that did the trick

thanx

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