Bug#413837: default dom0_mem parameter in menu.lst

[Jan Korbel]

Package: grub
version: 0.97-23 (etch)

I use xen hypervisor 3.0.3-1-i386-pae with about 4 domU (virtual 
servers). Server has 6GB RAM, domU from 256MB to 1GB. After some time 
(when last domU started) i found this error in dom0:

xen_net: Memory squeeze in netback driver

Dom0 used almost all of memory for disk cache. Also network connections 
time-outed. I found something in xensource's bugzilla:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=762

After changing "# xenhopt=dom0_mem=196MB" in menu.lst, update-grub and 
reboot it seems to be ok. I think this parameter should be default for 
new installations, but there is problem with exact value - 196MB is too 
much for computer with 128MB RAM for example. Anyway at least some 
warning about this problem should be available when installing.

J.