[gpfsug-discuss] CES - samba - how can I disable shadow_copy2, i.e. snapshots
Billich Heinrich Rainer (PSI)
heiner.billich at psi.ch
Fri Nov 9 12:46:31 GMT 2018
Hello,
we run CES with smbd on a filesystem _without_ snapshots. I would like to completely remove the shadow_copy2 vfs object in samba which exposes the snapshots to windows clients:
We don't offer snapshots as service to clients and if I create a snapshot I don't want it to be exposed to clients. I'm also not sure how much additional directory traversals this vfs object causes, shadow_copy2 has to search for the snapshot directories again and again, just to learn that there are no snapshots available.
Now the file samba_registry.def (/usr/lpp/mmfs/share/samba/samba_registry.def) doesn't allow to change the settings for shadow_config2 in samba's configuration.
Hm, is it o.k. to edit samba_registry.def? That's probably not what IBM intended. But with mmsnapdir I can change the name of the snapshot directories, which would require me to edit the locked settings, too, so it seems a bit restrictive.
I didn’t search all documentation, if there is an option do disable shadow_copy2 with some command I would be happy to learn.
Any comments or ideas are welcome. Also if you think I should just create a bogus .snapdirs at root level to get rid of the error messages and that's it, please let me know.
we run scale 5.0.1-1 on RHEL4 x86_64. We will upgrade to 5.0.2-1 soon, but I didn’t' check that version yet.
Cheers
Heiner Billich
What I would like to change in samba's configuration:
52c52
< vfs objects = syncops gpfs fileid time_audit
---
> vfs objects = shadow_copy2 syncops gpfs fileid time_audit
72a73,76
> shadow:snapdir = .snapshots
> shadow:fixinodes = yes
> shadow:snapdirseverywhere = yes
> shadow:sort = desc
--
Paul Scherrer Institut
Heiner Billich
System Engineer Scientific Computing
Science IT / High Performance Computing
WHGA/106
Forschungsstrasse 111
5232 Villigen PSI
Switzerland
Phone +41 56 310 36 02
heiner.billich at psi.ch
https://www.psi.ch
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