Is it possible to use a local drive to cache an NFS share

Rajat Sharma fs.rajat at
Mon Sep 3 15:51:51 EDT 2012


NFS client support FSCache support which is default in recent kernels
CONFIG_NFS_FSCACHE=y, But as I remember, it is a read cache (not even
write-through), so a compile load generates lots of new files, so
those won't really be benefited by FSCache.

But as you are pointing out, your setup is a single user access, so
probably you can relax some of the NFS consistency options, e.g. async
mount is really suitable for your case, also you can increase actimeo
values. Compiler writes will hit-page cache and with asynchronous
writebacks, it is way more faster than SSDs :).


On Mon, Sep 3, 2012 at 6:30 PM, Graeme Russ <graeme.russ at> wrote:
> Hi All,
> I am mounting /home over NFS which is great, but it really kills compile
> times. So I have a local HDD which I have copied all my source code over
> from which I do my coding and compiling.
> What I would love to do is use the local drive to cache /home. Specifically
> one user directory under /home - only one machine will ever be modifying
> the contents of this directory.
> Or should I just use rsync?
> On a side note - I moved my source code from a 1TB HDD on a 3Gb/s SATA port
> to an Intel 510 series 250GB SSD on a 6Gb/s SATA port. But I didn't see an
> appreciable increase in compile speed.
> Regards,
> Graeme
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