[uml-devel] many cow files with ubd_kern.c

["James McMechan" <james_mcmechan@hotmail.com>]

Once again I have been tweaking ubd_kern to support lots of disks since I 
need it for recovery
but I hit (even on a plain 2.6.15-bs1 kernel)
allocation failed: out of vmalloc space - use "vmalloc=<size>" to increse 
size
Failed to vmalloc COW bitmap
ubd0: Can't open "COW0": errno -12

but I already had vmalloc=128M (which should be the default) and 
vmalloc=256M and mem=384M on the command line.
I can't seem to locate where the equivlaent of arch/i386/kernel/setup.c has 
the vmalloc= option on arch/um though
has anyone hit something like this before each of the bitmaps should only 
take about 60M of memory and at this point I have only tried to allocate 1 
for a single 250G ubd device

This will present a larger problem when I get everything working and try to 
allocate all 10 drives worth of bitmap ~600M
I suppose I may have to go back to the paged bitmap logic but it is still a 
mess...
The multiple major numbers and C:H:S from mconsole do seem to work correctly 
though




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