Re: [Xen-users] How to increase loop device

[Stephen Liu <satimis@xxxxxxxxx>]

--- Boris Quiroz <borisq22@xxxxxxxxx> wrote:

> 2008/9/25 Stephen Liu <satimis@xxxxxxxxx>:
> >
> > --- Dominik Vogt <dominik.vogt@xxxxxxxxxxxx> wrote:
> >
> >> Am Donnerstag, den 25.09.2008, 15:05 +0800 schrieb Stephen Liu:
> >> > --- Dominik Vogt <dominik.vogt@xxxxxxxxxxxx> wrote:
> >>
> >> >
> >> > I don't have this file on /etc/modprobe.d/
> >>
> >> So you have to create it :-) you can also name the file "xen" or
> what
> >> ever. After this you just have to do
> >>
> >> rmmod loop
> >> modprobe loop
> >
> >
> > Performed following steps;
> >
> >
> > # vi /etc/modprobe.d/xen
> > adding following line;
> > options loop max_loop=64
> >
> >
> > # rmmod -v loop
> > ERROR: Module loop does not exist in /proc/modules
> >
> >
> > # modprobe loop
> > FATAL: Module loop not found.
> >
> >
> > # grep -i loop /boot/config-`uname -r`
> > CONFIG_BLK_DEV_LOOP=y
> > CONFIG_BLK_DEV_CRYPTOLOOP=m
> > CONFIG_XEN_NETDEV_LOOPBACK=y
> >
> >
> > loop is not a module.  What can I do?  TIA
> >
> >
> > B.R.
> > Stephen L
> >
> >
> >> > >
> >> > > With 64 loop devices you can run up to 32 guests on your host,
> >> > > assuming
> >> > > you aren't using loop devices for any other purposes.
> >> > >
- snip -

> 
> If you're using a debian-based distro, the file you're looking for
> uis
> /etc/modules
> There you must add the line loop max_loop=64 and then load the
> module.
> 
> cheers.


Hi Boris,


Thanks for your advice.


Debian Etch


Performed following steps.


# vi /etc/modules
There is only one word "loop" there.

changing it as;

loop max_loop=64


# modprobe modules
FATAL: Module modules not found.


# modprobe /etc/modules
FATAL: Module /etc/modules not found.


# depmod -a
# modprobe modules
FATAL: Module modules not found.


# insmod modules
insmod: can't read 'modules': No such file or directory


# insmod /etc/modules
insmod: error inserting '/etc/modules': -1 Invalid module format


Reboot PC.  


# /etc/init.d/module-init-tools restart
Loading kernel modules...done.


Still can't solve the problem.  Only 4 domU can be started.


# xm create /etc/xen/xen5.satimis.com.cfg
Using config file "/etc/xen/xen5.satimis.com.cfg".
Error: Device 770 (vbd) could not be connected. Failed to find an
unused loop device


B.R.
Stephen L

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