On Wed, 27 Apr 2005, vocemanago wrote:
> I have a question about the network mounting piece of linux. Is there
> some kind of direct limitation (due to driver or something) that
> doesn't allow more than one NFS mount on this board?
No.
> Also is there a throughput issue when using NFS that I should address
> before doing things like a "kernel build" in the NFS mount?
Yes. there are NFS thru' put issues - they are related to the basic
ethernet performance, but mostly related to rsize and wsize options
In general the bigger the better all other things being equal :-)
However they seldom are,
See http://nfs.sourceforge.net/nfs-howto/performance.html
for more details.
> I have a debian linux server now, which is offering up the /home
> directory to the development debian environment on the TS-7200. It
> connects ok and navigation isn't a problem, but when I do something
> disk intensive, it locks up the operation fairly hard. Is there some
> kind of "open files" limitation perhaps? Where you can't open more
> than two (or one) file at a time on the NFS mount?
No. Not normally.
> The whole telnet console is stuck, I have to log in under another
> telnet client and kill the whole situation from there.
>
> Doing something like a make in the NFS seems to cause it. I think I
> had problems moving large files or sets of directories.
> Anyone have a clue.
>
> Obviously there are all kinds of configuratoin issues, but I was
> curious if there are any linux gurus out there who know the "magic"
> arrangement that pretty much always works.
for what its worth my /etc/exports on the nfs server is....
# /etc/exports: the access control list for filesystems which may be exported
# to NFS clients. See exports(5).
/home/export/debdev *.wf32df(rw,no_root_squash,insecure)
/home/export/cfdisk *.wf32df(rw,no_root_squash,insecure)
/home/export/flash *.wf32df(rw,no_root_squash,insecure)
/home/export/work *.wf32df(rw,no_root_squash,insecure)
and the /etc/fstab on my ts7200 contains these lines.....
iridium.wf32df:/home/export/work /mnt/nfs nfs defaults,noatime,rw 0 0
iridium.wf32df:/home/export/debdev /mnt/debdev nfs defaults,noatime,rw 0 0
So I use the default r/wsize settings.
>
> Interestingly I have an old NAS device (an old Snap server) which can
> be anything under the sun as far as disk linkage goes (windows share,
> netware driver,apple talk drive,NFS , www server)... and it appears
> quite capable of take an NFS mount and doesn't seem to bother the
> TS-7200 much at all. I expect internally it is some kind of linux or
> BSD kernel.
>
> I wonder if it has to do with the difference between synch and asynch
> file mainpulation.
>
> Tony
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> Yahoo! Groups Links
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