Messages in this thread | | | Date | Fri, 18 Dec 1998 19:20:01 -0500 | From | Brian Craft <> | Subject | nfsroot pathology |
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I'm stumped on an odd nfsroot behavior I'm seeing:
NFS moves at about 8 kbaud. A 1k packet every second or so. It takes hours to boot (it's never made it all the way up). This is on 100bT media.
This doesn't happen if I boot the client off the hard drive & nfs mount the same directories. In that case it runs at a normal speed.
What difference would there be in the networking between nfsroot mounting and mounting after the machine is up? On an isolated hub?
Even stranger, on two occasions -- without changing anything -- after running slow for about a minute, it suddenly started running at normal speed (and went through the boot sequence very quickly until it choked on something else I haven't sorted out yet). This sudden change of speed by many orders of magnitude seemed completely random.
The client in question is a Versa 486 with a pcmcia Linksys Etherfast 10/100. I'm booting from floppy with an initrd that holds the pcmcia & network modules.
The server is a 586 with a 3com905.
I've tried this with kernels 2.0.35 and 2.0.36 (on both ends).
Anyone know what could cause this? I've been messing with the NFS parameters, but haven't settings which affect this. It appears that the first major timeout occurs before anything hits the wire: tcpdump on the server shows no activity (not even an ARP) before the 1st "NFS server not responding" message (with retrans=3).
b.c.
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