I think if you dedup from the beginning it should ditch all the old metadata and rebuild the fingerprint database, hopefully you won’t run into the bug again.

sis start –s /vol/vm_volume

From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Fletcher Cocquyt
Sent: Wednesday, April 02, 2014 2:01 PM
To: Tim Stiller
Cc: <toasters@teaparty.net> Lists
Subject: Re: Determining what's contributing to fast aggregate growth

The aggregate growth has stopped since I stopped sis on the vm65net volume.

Thanks Tim, and all who replied - this bug was going to fill up our aggregate with 100's of VMs running otherwise.

Now I get to read up more on it and try to reclaim the space

Strange this would happen after being stable for so long running de-dup without issue

thanks again,

Fletcher

On Apr 2, 2014, at 9:36 AM, Fletcher Cocquyt <fcocquyt@stanford.edu> wrote:

Yes sis is active

this may be it

na02> sis status -l

Path: /vol/vm65net

State: Enabled

Compression: Disabled

Inline Compression: Disabled

Status: Active

Progress: 0 KB (0%) Done

Type: Regular

Schedule: tue-thu@23

Minimum Blocks Shared: 1

Blocks Skipped Sharing: 0

Last Operation State: Success

Last Successful Operation Begin: Thu Mar 27 23:00:00 PDT 2014

Last Successful Operation End: Fri Mar 28 07:01:44 PDT 2014

Last Operation Begin: Thu Mar 27 23:00:00 PDT 2014

Last Operation End: Fri Mar 28 07:01:44 PDT 2014

Last Operation Size: 354 GB

Last Operation Error: -

Change Log Usage: 2%

Logical Data: 8220 GB/69 TB (11%)

Queued Job: -

Stale Fingerprints: 1%

na02> sis stop /vol/vm65net

The operation on "/vol/vm65net" is being stopped.

irt-na02> Wed Apr 2 09:35:45 PDT [irt-na02:sis.op.stopped:error]: SIS operation for /vol/vm65net has stopped

Stopped - will see if the stops the growth

thanks!

On Apr 2, 2014, at 9:32 AM, Tim Stiller <tim.stiller@gmail.com> wrote:

Hi Fletcher,

SIS running?

BUG 657692: Stale metadata not automatically removed during deduplication operations on volume
http://support.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=657692

https://forums.netapp.com/thread/42487

regards,
Tim

2014-04-02 18:24 GMT+02:00 Fletcher Cocquyt <fcocquyt@stanford.edu>:

Hi all,

In the last 36 hours or so we have a 19Tb aggregate that is growing above 18Tb used.

Usually the aggregate used level only grows if we grow its volumes.

This is different - I was forced to delete snapshots and shrink volumes to get it back under 90%.

And in the last 3 hours its back above 91% - used level is climbing 5-10g/minute

I so far can not see where the growth is coming from,

Aggr snapshot is OFF

Ontap 8.1.2

na02> aggr status

Aggr State Status Options

aggr0 online raid_dp, aggr root, nosnap=on, raidsize=19

64-bit

thanks for any tips!

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