5.1-R-p11 unable to "sync disks" when shutting down

Craig Boston craig at xfoil.gank.org
Sun Jan 4 11:55:28 PST 2004

On Wednesday 31 December 2003 05:33 pm, David Gilbert wrote:
> True, but faced with a machine that can't be upgraded (swap to vinum
> not supported in 5.2)

What I ended up doing so that I could run 5.2 on a couple of my "all RAID5 all 
the time" servers was this:

1. Create a UFS filesystem on the "swap" partition and mount it noatime,sync
2. Use dd to create the biggest file possible on the new filesystem
3. Use swapfile="/swap/bigfile" in rc.conf, which uses an md device with vnode 
backing and enables swapping on it.

It's a massive hack and there is probably a performance hit, but it seems to 


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