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On 10/14/2016 05:31 PM, Hankins, Jonathan wrote:
> I'm not really familiar with EMC's NFS, NFSv4 and automounter, but here's
> a shot in the dark - what do your export and mount options look like? In
> particular, look into nohide or crossmnt export options. Also, have a
> look at this:
> https://utcc.utoronto.ca/~cks/space/blog/unix/MultiFilesystemNFSIssue.
> Just guesses, may not have any bearing on your issue.
Hello Jonathan,
we had just been using something pretty standard:
stud -rsize=32768,wsize=32768,vers=4 moria-0:/stud
The export setup is also really simple: the exported file systems themselves
have no other filesystems mounted inside, so crossmnt and nohide are not
applicable to our use-case.
At the moment, I suspect misbehavior on the part of the automounter. I have
just hardmounted the file systems (which does not hurt us on that specific
server) and will see how the next Differential on Sunday morning fares.
Best,
Andreas
>
> -Jonathan Hankins
>
> On Fri, Oct 14, 2016 at 7:34 AM Andreas Koch
> <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hello all,
>
> we have observed strange behavior in our recent backups. We have a number
> of filesystems, and explicitly list those to be backed up in the fileset
>
> One of these file systems is
>
> /home/stud
>
> which has subdirectories for each user. Backing these up has worked
> perfectly for the last decade by just including the file system in the
> FileSet
>
> FileSet { Name = "fs_gundabad" Include { Options { signature = SHA1;
> verify=pins1; accurate=pins1; xattrsupport = yes; } ... File =
> /home/stud ... }
>
> However, a recent differential backup shows warnings for _all_ of user
> subdirectories of the form:
>
> 13-Oct 03:25 gundabad-fd JobId 2161: /home/stud/aqsprak01 is a
> different filesystem. Will not descend from /home/stud into it. 13-Oct
> 03:25 gundabad-fd JobId 2161: /home/stud/aqsprak02 is a different
> filesystem. Will not descend from /home/stud into it. ...
>
> Even stranger, the backup _does_ appear to contain files from these
> directories (or more accurately, shows them in the catalog):
>
> * list files jobid=2161 ...
> /home/stud/aqsprak01/Templates/test01/projSRC_Master/3cuS_1_l.dat ...
>
> Has anyone observed something like this elsewhere? As I wrote above, we
> use Bacula 7.4.4, on Scientific Linux 7.2 backing-up NFS v4.0 filesystems
> mounted via automounter from an EMC VNX 5200.
>
> Best, Andreas
>
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******* !!! Geänderte Rufnummern / Phone numbers have changed !!! ******
Prof. Dr.-Ing. Andreas Koch [email protected]
Technische Universitaet Darmstadt, FB20 Phone : x49-6151-16-22420
Embedded Systems and Applications Group (ESA) FAX : x49-6151-16-22422
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