I guess what I am getting at is make sure you get it in writing. I
agree with your take on NFS file locking, but I have been in situations
where support engineer A promised something that support engineer B
would not support. If you can point to a Veritas document that states
they support the database over NFS, your are in favorable situation.
Regards,
Jon
-----Original Message-----
From: Manny Kaiser [mailto:mkaiser@mmcnet.com]
Sent: Thursday, October 25, 2001 12:28 AM
To: Jon Walton
Cc: toasters@mathworks. com
Subject: RE: Veritas Netbackup Database
I was under the distinct impression that file locking in NFS in today's
operating systems is considerably more reliable then it was years ago. I
have never encountered a problem with any application running on an NFS
mounted file system. I am under the impression that the quote below is
something that was copied out of earlier versions of the manual and
never
reviewed again.
When using NFS you might suffer a performance penalty if your systems
are
not correctly configured.
-----Original Message-----
From: owner-toasters(a)mathworks.com
[mailto:owner-toasters@mathworks.com]On
Behalf Of Jon Walton
Sent: Wednesday, October 24, 2001 11:31 PM
To: Jeff Kennedy
Cc: toasters@mathworks. com
Subject: RE: Veritas Netbackup Database
Now that I look, the 3.4 DataCenter install guide states:
"Because the product uses file locking, VERITAS recommends that you not
install NetBackup in an NFS mounted directory. File locking in NFS
mounted files systems can be unreliable"
I mentally took this to mean "not supported". Sorry if my previous
email was misleading.
Regards,
Jon
-----Original Message-----
From: Jeff Kennedy [mailto:jlkennedy@amcc.com]
Sent: Wednesday, October 24, 2001 6:18 AM
To: Jon Walton
Cc: toasters@mathworks. com
Subject: Re: Veritas Netbackup Database
OK, I did some checking again. Veritas does officially support putting
/usr/openv onto an NFS file system. However, they say that performance
does suffer due to the large write streams.
So, if performance is not an issue then it is a very nice solution.
Also, db backups do not yet support disk storage unit backups.
Supposedly in 4.5 they will for just this reason.
~JK
Jon Walton wrote:
>
> I believe they do not support this due the fact that operations on the
> database files involve file locking. That is what is remember
reading
> in the Unix Admin Guide.
>
> Regards,
>
> Jon
>
> -----Original Message-----
> From: Jeff Kennedy [mailto:jlkennedy@amcc.com]
> Sent: Friday, October 19, 2001 10:39 AM
> To: Manny Kaiser
> Cc: toasters@mathworks. com
> Subject: Re: Veritas Netbackup Database
>
> Got word from Vertias that putting the /usr/openv filesystem itself on
> NFS was NOT supported. However, you could backup the database to a
NFS
> disk without issue....
>
> ~JK
>
> > Manny Kaiser wrote:
> >
> > Has anyone placed the Veritas Netbackup database on an NFS mounted
> > file system?
> > More specifically on a netapp?
> > I was just told by Veritas that they do not recommend doing this
> > because NFS is unreliable.
> > Any feedback would be helpful.
> >
> >
>
> --
> =====================
> Jeff Kennedy
> Unix Administrator
> AMCC
> jlkennedy(a)amcc.com
--
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy(a)amcc.com