Re: [Xen-users] vbd segment not found

[Nils Toedtmann <xen-users@xxxxxxxxxxxxxxxxxx>]

Am Dienstag, den 12.04.2005, 12:10 +0200 schrieb mlist:
> i got the following pb:
> # xm create -f mac1/mac1.xen
> Using config file "mac1/mac1.xen".
> Error: Error creating domain: vbd: Segment not found:
> uname=file:/xen/mac1/swapfs
> 
> but:
> # dmesg | grep loop
> loop: loaded (max 32 devices)
> 
> # ls -l /xen/mac1/swapfs
> -rw-r--r--  1 root root 268435457 2005-04-12 11:25 /xen/mac1/swapfs
> 
> # xm list
> Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> Domain-0           0       57    0  r----     26.9
> mac2               1      127    0  -b---      1.5    9601
> mac3               2      127    0  -b---      1.4    9602
> 
> meaning i should be able to use 32 loop devices, swap file actually
> exists, and i've got only 2 xen machines running with 3 vbd each ( so 6
> loop devices used ).
> 
> # lsof | grep loop also shows a total of 6 loop dev being used.
> 
> seems that loop device limit is still set to 8.
> 
> any idea ?
> 
> plateform is debian sarge, clean xen-2.0.5 home-compiled

I do not know debian, but while the kernel is able to handle 32 loop
devs, the according _devices_ (/dev/loop*) may be missing? Then do
something like

  for minor in `seq 8 1 31` ; do mknod /dev/loop$minor b 7 $minor ; done

/nils.


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