Re: [Xen-users] Error: destorydevice ()

["Arpan Jindal" <jindalarpan@xxxxxxxxx>]

HI Todd

here are the output. and its showing that there are only 7 loop devices.
ls -l /dev/loop*
brw-r----- 1 root disk 7, 0 May 10 23:26 /dev/loop0
brw-r----- 1 root disk 7, 1 May 10 23:26 /dev/loop1
brw-r----- 1 root disk 7, 2 May 10 23:26 /dev/loop2
brw-r----- 1 root disk 7, 3 May 10 23:26 /dev/loop3
brw-r----- 1 root disk 7, 4 May 10 23:26 /dev/loop4
brw-r----- 1 root disk 7, 5 May 10 23:26 /dev/loop5
brw-r----- 1 root disk 7, 6 May 10 23:26 /dev/loop6
brw-r----- 1 root disk 7, 7 May 10 23:26 /dev/loop7

losetup -f
losetup: could not find any free loop device

losetup -a
/dev/loop0: [6805]:49155 (/xen/rhel1)
/dev/loop1: [6805]:49153 (/xen/rhel2)
/dev/loop2: [6805]:49154 (/xen/rhel3)
/dev/loop3: [6805]:49156 (/xen/rhel4)
/dev/loop4: [6802]:98032 (/en_windows_server_2003_standard.iso)
/dev/loop5: [6805]:49158 (/xen/rhel5)
/dev/loop6: [6805]:49159 (/xen/rhel6)
/dev/loop7: [6805]:49157 (/xen/rhel7)

how i can creatre more i have added entried there and moreover i have
started server to. tehn to its showing only 7 loop devices.


thanks


On 5/10/08, Todd Deshane <deshantm@xxxxxxxxx> wrote:
> Hi Arpan,
>
> On Sat, May 10, 2008 at 1:58 PM, Arpan Jindal <jindalarpan@xxxxxxxxx> wrote:
> > /boot/grub/grub.conf
> > title Red Hat Enterprise Linux Server (2.6.18-8.el5xen)
> > root (hd0,1)
> > kernel /boot/xen.gz-2.6.18-8.el5
> > module /boot/vmlinuz-2.6.18-8.el5xen ro root=LABEL=/ rhgb quiet
> > loop.max_loop=888
> > module /boot/initrd-2.6.18-8.el5xen.img
> >
> >
> >
> > /etc/modprobe.conf
> >
> > alias eth0 bnx2
> > alias eth1 bnx2
> > alias scsi_hostadapter cciss
> > alias peth0 bnx2
> > options loop max_loop=888
> >
> > I have changed the network setting earlier problem was with
> > loopbackdevices now I have changed them to 888 in grub.conf and
> > /etc/modprobe.conf but still I m not able to start virtual machines
> > more that 7 at a time I can only start 7 machines. Similar problem I
> > have faced in past but after inc the number of loop back devices
> > system started work is their any other place where I have to set this
> > number ?
> >
>
> check that you actually do have the loop devices.
>
> ls /dev/loop*
>
> losetup -f
> losetup -a
>
> Are you sure that the loop module is being loaded properly?
>
> Can you check the output of dmesg and also try running the
> modprobe loop max_loop= line manually.
>
> Cheers,
> Todd
>

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