<div dir="ltr"><div><div><div><div><div>Jim, <br><br></div>Sounds like the same issue I having. Driving me crazy to fix it. I got a script doing a ifconfig down and then an up and that works, but it a bandage. <br><br></div>
My mounts are soft. <br><br></div>I have Gig cards and Gig Switches. <br><br></div>I will follow this to see it helps with my issue.<br><br></div>Pup<br><div><div><br><br></div></div></div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On Tue, Apr 9, 2013 at 3:08 PM, JD <span dir="ltr"><<a href="mailto:jdp@algoloma.com" target="_blank">jdp@algoloma.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On 04/09/2013 02:33 PM, Mike Harrison wrote:<br>
> On Tue, 9 Apr 2013, Jim Kinney wrote:<br>
>> so what happens when a series of machines, each with 1G nic all try to<br>
>> read/write to the same NFS mount filesystem,<br>
>> also on a single 1G nic, and this goes on for hours at a time? Eventually, nic<br>
>> buffers fill and the OS is told to "hold that thought". But for how long? Will<br>
>> the OS continue to try<br>
>> the write until it succeeds? Or will the constant buffer overload just cause a<br>
>> nic to flush the buffer and hope for<br>
>> better luck next send?<br>
<br>
</div>My use of NFS is a little dated ... seems it would depend on the type of mount<br>
used - spongy, soft, or hard.<br>
If hard, it will try again and again and will appear to lockup the machine, IME.<br>
With soft mounts, writes aren't guaranteed.<br>
Spongy has the good of hard and the good of soft mounts. It will give up after a<br>
specific amount of time and continue as best it can - providing errors as<br>
required. NFS mounts have lots of tunable params, if I recall correctly.<br>
<br>
Also, the specific buffer size for the involved NICs would matter too, but<br>
filling a network buffer should happen relatively quickly.<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Terror PUP a.k.a<br>Chuck "PUP" Payne<br> <br>(678) 636-9678<br>-----------------------------------------<br>Discover it! Enjoy it! Share it! openSUSE Linux.<br>
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