> "You can attach 8 different ubd devices IIRC, i.e. host files, and
that trivial to raise to 16 (just change a define)"
I dont understand this part. I have raised MAX_DEV in ubd_kern.c to 60.
But that is not the problem. issue is the limit of 16... partitions?
Derek R. Meiresonne
eTecc Communications, Inc.
www.eTecc.com
Blaisorblade wrote:
On Friday 07 October 2005 20:04, Derek R. Meiresonne wrote:
How can I use over 16 UBD devices? I have read in the mailing lists that
you can create partitions:
brw-r--r-- 1 root root 98, 1 Oct 7 12:52 /dev/ubd0p1
However; I cannot mount the above device while UML is booting.
Can you explain what you mean? You can put /dev/ubd0p1 in /etc/fstab without
problem.
You can even make Uml boot from it, by adding
rootfs=/dev/ubda1
*
or if the kernel doesn't understand that, add
root=98:1, i.e. with major:minor; note that IIRC, those numbers are Hex, so
you don't want to use root=98:10 but instead root=98:a.
* ubd devices also support a Ide-like syntax, with letters, since when they
support partitions; nobody ever used /dev/ubd0p1, even it that's a general
convention, so beware.
Can
someone provide me with some direction?
Wait a moment.
You can attach 8 different ubd devices IIRC, i.e. host files, and that is
trivial to raise to 16 (just change a define), and could even be changed to
more (it's just a matter of allocating some new major number - must talk with
upstream people to decide which one to use, but it's otherwise ok).
Each host file can be partitioned. And you can mount it via /etc/fstab. But
you can't attach different partitions to different host files.
Actually you could use DeviceMapper to concat the files together, after
loop-mounting them, but it's not trivial to do, and you'd also have to write
a fictious partition table matching the host files.
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