Ok, a little out of the box here...I think Parisi might be proud of this one....
What about XCP?
Why not point it at a source(could be active FS or snapshot path ) and destination (same, could be the active FS or the snapshot path ) I believe it has the ability to scan and report differences. (the verify function)
Granted, not perfect, but it should be good enough to tell you what has changed and then all those files could be suspect, no?
--tmac
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On Fri, Apr 6, 2018 at 2:40 PM, Ehrenwald, Ian Ian.Ehrenwald@hbgusa.com wrote:
As far as I am aware, you cannot do this on the filer directly.
If the data set isn't too unwieldy and you have some time to let it run, you could:
- Create flexclone from the snapshot you want to compare against
- Export flexclone to a Linux utility host, mount it r/o
- Take snapshot of live filesystem
- Create flexclone from the snapshot you just created
- Export flexclone to the same Linux utility host, mount it r/o
5a) Recursively diff the entirety of the two flexclones (diff -urN /oldFC /newFC | tee ~/myFcDiff.txt) 5a1) This assumes everything being compared is readable text, which may not be true at all. The '-a' argument to diff could be of use, but probably not. 5b) Recursively calculate md5 hashes of files in both flexclone mountpoints (find /oldFC -xdev -type f -exec md5sum {} ; | tee ~/myOldFCHash.txt and the same for the /newFC mountpoint), then sort the files, then use either diff or comm to figure out what files have changed (or haven't)
There are probably better ways to do this but it's what popped into my head first. Hope this helps.
Ian Ehrenwald Senior Infrastructure Engineer Hachette Book Group, Inc. 1.617.263.1948 / ian.ehrenwald@hbgusa.com
From: toasters-bounces@teaparty.net toasters-bounces@teaparty.net on behalf of John Adams intheyc@gmail.com Sent: Friday, April 6, 2018 9:38:21 AM To: toasters@teaparty.net Subject: What's changing and taking up space in snapshots?
Hello, Is there a way to see the changed/deleted files that are taking space in snapshots? (7 Mode, 8.2 NFS/CIFS access.)
Thanks.
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