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List:       freebsd-hackers
Subject:    Re: swapping over nfs might be broken
From:       Bjoern Fischer <bfischer () Techfak ! Uni-Bielefeld ! DE>
Date:       2003-05-31 14:58:38
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Hello,

> > Everything looks normal except for swapinfo.  It looks like nfs swapping
> > is broken?
> 
> `man swapinfo` says:
> 
> BUGS
>      Does not understand NFS swap servers.

hmm, the man page seems to be out of date. On my diskless client
swapinfo works flawlessly:

  broccoli:~$ swapinfo 
  Device          1K-blocks     Used    Avail Capacity  Type
  [NFS swap]         130944        0   130944     0%    Interleaved
  broccoli:~$ uname -r
  4.8-STABLE-20030510-JPSNAP

Also, I don't get that error or warning message at boot time:

  subnet mask 255.255.255.0 router 192.168.43.1 rootfs \
    192.168.43.1:/exports/root/broccoli rootopts nfsv3,udp,hard \
    swapfs 192.168.43.1:/exports/swap swapopts nfsv3,udp,hard \
    hostname broccoli 
  Adjusted interface xl0
  md_lookup_swap: Swap size is 131072 KB
  Mounting root from nfs:
  NFS ROOT: 192.168.43.1:/exports/root/broccoli
  NFS SWAP: 192.168.43.1:/exports/swap

For DHCP I use these vendor options:

  option freebsd-swap-path code 128 = text;
  option freebsd-swap-opts code 130 = text;
  option freebsd-root-opts code 131 = text;

All diskless clients share these DHCP config:

  use-host-decl-names on;
  filename "pxeboot";
  option freebsd-swap-path "192.168.43.1:/exports/swap";
  option freebsd-swap-opts "nfsv3,udp,hard";
  option freebsd-root-opts "nfsv3,udp,hard";

The root path is set per individual client of course.

Maybe this helps.

Björn

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