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NFS & File size limits

We have a Sun server that has NFS mounted volume through NW6 sp2. Isthere a way to tell, on the Netware, what version of NFS the Sun used
to
mount the volume? What are the file size limits for each version of
nfs? I have read that nfs v2 limits size to 2gig. This Sun machine
quits copying a file when it reach ~4gb - the file is 57gb.

Any suggestions?

Bill




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Re: NFS & File size limits

In article <3E5A3936.9D4AA1AE@mailbox.sc.edu>, Bill Crayton wrote:
> This Sun machine
> quits copying a file when it reach ~4gb - the file is 57gb.
>

4GB is a current limitation for all Novell NFS services. It's
supposed
to be fixed with Nakoma, as I recall.

As for seeing which version is being used, nothing in the NW logs
shows
that info. Packet traces work though <g>.

bd
NSC Volunteer SysOp
www.InsightNetSolutions.net




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Re: NFS & File size limits

Bill Crayton wrote:
>We have a Sun server that has NFS mounted volume through NW6 sp2. Is


>there a way to tell, on the Netware, what version of NFS the Sun used

to
>mount the volume? What are the file size limits for each version of


>nfs? I have read that nfs v2 limits size to 2gig. This Sun machine


>quits copying a file when it reach ~4gb - the file is 57gb.


I don't think there's any way to tell on the server. On the client,
you
can determine the version by looking at the output of the "mount"
command. If you see "/vers=3/", it's using NFSv3; otherwise it's
NFSv2.

NFSv2 theoretically has a 2gb limit, but certain combinations of
client&server OSes can cheat and access up to 4gb (by treating the
filesize as unsigned instead of signed like the spec says). Netware allows it, but from my tests, Solaris 7 enforces the 2gb limit.

NFSv3 allows 64-bit file lengths, so it has neither a 2 or 4-gb limit.

Novell, unfortunately, only used 32-bit file access APIs in the NFS
server nlms, so even with NFSv3 you're still limited to 4gb on Netware

servers... According to Brad (
news://support-forums.novell.com:119/VA.00001902.56ac8665@nscsysops.net

) , NW6SP3 is supposed to fix this. I haven't tried it myself though.


Also note that there is a bug in NW6SP2 that will cause occasional
abends if you enable NFSv2 and NFSv3 mounts, so you will probably want

to force NFSv3 access via consoleone. If you have some old clients
that
only do NFSv2 (Linux 2.2 kernels, for example), you will have to force

NFSv2 on the server and risk hitting the 2gb limit with certain
clients.

--
Dan Nelson
dnelson@allantgroup.com




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Anonymous_User Absent Member.
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Re: NFS & File size limits

Well, that answers that surprise. Dan indicated that this limit may
be
'fixed' w sp3. Has anyone tried the beta sp to see? (as well as see
if it
cuases any problems)

Moving on. Our Solaris box is trying to place its Oracle rman logs on
the
NFS mounted volume. 'It hangs' is the answer I get from the Solaris
folks. It creates no files that we can find. They are large (57gb)
so I
know that the file size limit likely applies. In our experiments in
copying large files to the server, the server stops at about the 4gb
limit.

Any ideas other than the file limit for the rman issue. When a linux
box
exports its volumes, rman completes correctly.

Bill


Brad Doster wrote:

> In article <3E5A3936.9D4AA1AE@mailbox.sc.edu>, Bill Crayton wrote:
> > This Sun machine
> > quits copying a file when it reach ~4gb - the file is 57gb.
> >

> 4GB is a current limitation for all Novell NFS services. It's

supposed
> to be fixed with Nakoma, as I recall.
>
> As for seeing which version is being used, nothing in the NW logs

shows
> that info. Packet traces work though <g>.
>
> bd
> NSC Volunteer SysOp
> www.InsightNetSolutions.net





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Re: NFS & File size limits

In article <3E5B8CE9.8D45B070@mailbox.sc.edu>, Bill Crayton wrote:
> They are large (57gb) so I
> know that the file size limit likely applies.
>

I'd have to guess the limit is the problem as well. I don't know if SP3 addresses it -- are you setup to where you can test it? I'm not,

at least for now. Coome to think of it, I don't have any 4GB files to

test with either.

bd
NSC Volunteer SysOp
www.InsightNetSolutions.net




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Re: NFS & File size limits

I can fairly easily setup to test this and I have plenty of files >
4gb.
But where is the sp?

Bill

Brad Doster wrote:

> In article <3E5B8CE9.8D45B070@mailbox.sc.edu>, Bill Crayton wrote:
> > They are large (57gb) so I
> > know that the file size limit likely applies.
> >

> I'd have to guess the limit is the problem as well. I don't know if


> SP3 addresses it -- are you setup to where you can test it? I'm

not,
> at least for now. Coome to think of it, I don't have any 4GB files

to
> test with either.
>
> bd
> NSC Volunteer SysOp
> www.InsightNetSolutions.net





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Re: NFS & File size limits

Brad,

I went back through some older messages and found references that this
was
supposed to be fixed in sp2 (and were not). Can you ask if they
actually
plan to release this in sp3 - this time. The messages I read were
dated
last year so this has been on the table a while (Jun 6 2002).

Bill Crayton wrote:

> I can fairly easily setup to test this and I have plenty of files >

4gb.
> But where is the sp?
>
> Bill
>
> Brad Doster wrote:
>
> > In article <3E5B8CE9.8D45B070@mailbox.sc.edu>, Bill Crayton wrote:


> > > They are large (57gb) so I
> > > know that the file size limit likely applies.
> > >

> > I'd have to guess the limit is the problem as well. I don't know

if
> > SP3 addresses it -- are you setup to where you can test it? I'm

not,
> > at least for now. Coome to think of it, I don't have any 4GB

files to
> > test with either.
> >
> > bd
> > NSC Volunteer SysOp
> > www.InsightNetSolutions.net





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Re: NFS & File size limits

In article <3E5BEB79.3CB29364@mailbox.sc.edu>, Bill Crayton wrote:
> But where is the sp?
>

Go here...

http://beta.novell.com/public.jsp

...and when at the login screen, also choose Consolidated Support Pack

9 from the pull down menu. After that you should be able to find it OK.

bd
NSC Volunteer SysOp
www.InsightNetSolutions.net




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Re: NFS & File size limits

Well, I went back thru some old messages as well, and it turns out
that
I'd already asked that... and was told that "The fixes are in NW6SP3."

So have at it and let us know what you find!

bd
NSC Volunteer SysOp
www.InsightNetSolutions.net




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Re: NFS & File size limits

Brad Doster wrote:
> Well, I went back thru some old messages as well, and it turns out

that
> I'd already asked that... and was told that "The fixes are in

NW6SP3."
> So have at it and let us know what you find!


I just installed NW6SP3 on a test box and am able to create files way

over the 4gb limit via NFS!

The large files cannot be accessed by client32, though, so all you can

do with them is back them up or FTP them someplace else (ftp shows the

filesize as -1 but works otherwise). 🙂

--
Dan Nelson
dnelson@allantgroup.com




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Re: NFS & File size limits

Good to know, Dan. Thanks for filling us in!

bd
NSC Volunteer SysOp
www.InsightNetSolutions.net




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