Ocfs2 users - Jan 2021 - how to find out the real size of a reflink ?

Hi Bernd,

See if any of the info here helps:

https://unix.stackexchange.com/questions/263309/how-to-verify-a-file-copy-is-reflink-cow/

Thanks,
Herbert.

> On Jan 11, 2021, at 6:42 AM, Lentes, Bernd <bernd.lentes at
helmholtz-muenchen.de> wrote:
> 
> Hi guys,
> 
> is there a way to find out the real size of a reflink ?
> "ls -s" doesn't seem to help.
> And shared-du or shared-filefrag does not seem to be available for my SLES
12 SP5.
> I know that i can calculate using df -h, but that's not convenient.
> 
> Thanks.
> 
> Bernd
> 
> 
> 
> -- 
> 
> Bernd Lentes 
> Head of Systemadministration 
> Institute for Metabolism and Cell Death (MCD) 
> Building 25 - office 122 
> HelmholtzZentrum M?nchen 
> bernd.lentes at helmholtz-muenchen.de 
> phone: +49 89 3187 1241 
> phone: +49 89 3187 3827 
> fax: +49 89 3187 2294 
> http://www.helmholtz-muenchen.de/mcd
> Helmholtz Zentrum M?nchen
> 
> Helmholtz Zentrum Muenchen
> Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
> Ingolstaedter Landstr. 1
> 85764 Neuherberg
> www.helmholtz-muenchen.de
> Aufsichtsratsvorsitzende: MinDir.in Prof. Dr. Veronika von Messling
> Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Kerstin
Guenther
> Registergericht: Amtsgericht Muenchen HRB 6466
> USt-IdNr: DE 129521671
> 
> 
> _______________________________________________
> Ocfs2-users mailing list
> Ocfs2-users at oss.oracle.com
> https://oss.oracle.com/mailman/listinfo/ocfs2-users

----- On Jan 11, 2021, at 6:20 PM, herbert van den bergh HERBERT.VAN.DEN.BERGH
at ORACLE.COM wrote:
> Hi Bernd,
> 
> See if any of the info here helps:
> 
>
https://unix.stackexchange.com/questions/263309/how-to-verify-a-file-copy-is-reflink-cow/
> 
> Thanks,
> Herbert.
> 
Hi herbert,

thanks for your message. Unfortunatley it doesn't help.
It's about BTRFS.
I found shared-du may help, but i don't find the respective binary.
Neither in the web nor in my Suse repositories.

Bernd
Helmholtz Zentrum M?nchen

Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
Ingolstaedter Landstr. 1
85764 Neuherberg
www.helmholtz-muenchen.de
Aufsichtsratsvorsitzende: MinDir.in Prof. Dr. Veronika von Messling
Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Kerstin Guenther
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671