Bug#544583: Need to control ramfs size

[Tong Sun <suntong@cpan.org>]

On Tue, Sep 1, 2009 at 2:24 PM, Daniel Baumann<daniel@debian.org> wrote:
> Tong Sun wrote:
>> I've bumped into "out of disk space" problem when using Debian
>> Live. I am using the persistent root and a big swap partition,
>> but mount tmp on ramfs -- in fstab:
>
> i don't understand. if you use (root) persistency, you don't have a ram
> disk at all, but all writes are dumped to the persistency partition.
>
> so how/why does ramfs matter?

As shown in OP:

 /dev/ram7       /var/tmp        ramfs   defaults,rw,auto,dev            0 0
 /dev/ram        /tmp            ramfs   defaults,rw,auto,dev            0 0

I.e., I don't want all writes dumped to the persistency partition, so
I excluded  /tmp & /var/tmp by using ramfs.

I hope that live-initramfs can have a boot parameter to control how
big the /dev/ram device is.

thanks