How do I change tmpfs default size?

Anders Häggström hagge.ubuntu at
Mon May 28 20:40:18 UTC 2007

2007/5/28, Derek Broughton <derek at>:
> On 5/27/07, Anders Häggström <hagge.ubuntu at> wrote:
> > Hello, I don't know exactly where to post this question so I try here.
> > If I'm wrong, please correct me.
> Certainly not on the upstart list...
sorry, my bad.

> >
> > The default size of every tmpfs-mountpoint is 50% of availible
> > ram+swap, as far as I understand. I want to change that default
> > setting but don't know how.
> Add the following to /etc/fstab:
> temp                    /tmp    tmpfs   defaults,size=32m 0      2
> "size" can be in g (gigabytes) or m(megabytes)
Thanks for the answer, but that is more or less just the same as to
add -osize=32M to each and every mountpoint. I'm searching for a
variable to change the defaultvalue. And if that does not exist I
would suggest it should be added as TMPFS_SIZE=50% to

> >
> > The only way I can figure it out as a workaround is to use -osize=32M
> > on every mount if I don't want to rebuild my kernel (and I don't).
> Yes, and why not?
I want to be able to easily upgrade the kernel when a new one is
distributed thru (main). If I build my own there will be a lot of
trouble, or at least a lot of extra work, when I want to upgrade.
But as the server-kernel is compiled I don't think I have much of a
choise. There is ALOT of desktop-stuff in the server-kernel, like
laptop specific things and such. But that is off-topic in this thread.

> --
> derek

// Anders

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