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Message-ID: <15393.20331.862567.47007@charged.uio.no>
Date: Thu, 20 Dec 2001 03:39:39 +0100
To: David Chow <davidchow@rcn.com.hk>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: nfsroot dead slow with redhat 7.2
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Reply-To: trond.myklebust@fys.uio.no
From: Trond Myklebust <trond.myklebust@fys.uio.no>
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>>>>> " " == David Chow <davidchow@rcn.com.hk> writes:

     > The network is fine. It is so slow that an ls -l at the rootfs
     > takes more than 2 minutes. The readdir() seems alright because
     > the ls immediate counts the number of records says "total
     > blahbalh" but when doing individual lookup calls, it seems slow
     > like hell. We have other production i686smp servers 2.4.14

As I said: 'tcpdump' ought to show you what is going on.

     > serving diskless i686 clients using
     > 2.4.13 kernels works great. Is there any difference in nfsroot
     >        with
     > normal nfsmounts? And can we configure the nfsroot use a v3

Nope: no differences. NFSroot uses the exact same code as standard
NFS.

     > mount?  becaus now it defaults to v2 always.

As I said in my previous mail: use the mount option 'v3' on the kernel
boot line if you want NFSv3.

 e.g. nfsroot="10.0.0.1:/bar,v3"

Cheers,
   Trond
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