[lxc-users] Unavailable loop devices

[Michael H. Warfield]

On Tue, 2014-05-06 at 06:25 -0400, CDR wrote:
> Dear Friends

> I succesfully created a SLES 11 SP3 container, but when I try to do this

> mount -o loop /images/SLE-11-SP3-SDK-DVD-x86_64-GM-DVD1.iso /media

> mount: Could not find any loop device. Maybe this kernel does not know
>        about the loop device? (If so, recompile or `modprobe loop'.)

Add the following to your container configuration file:

lxc.cgroup.devices.allow = c 10:137 rwm # loop-control
lxc.cgroup.devices.allow = b 7:* rwm    # loop*

Then make sure you have the following devices in your container /dev
directory...

brw-rw----. 1 root disk  7,   0 May  2 13:03 /dev/loop0
brw-rw----. 1 root disk  7,   1 May  2 13:03 /dev/loop1
brw-rw----. 1 root disk  7,   2 May  2 13:03 /dev/loop2
brw-rw----. 1 root disk  7,   3 May  2 13:03 /dev/loop3
crw-------. 1 root root 10, 237 May  2 13:03 /dev/loop-control

Regards,
Mike

> My host is Fedora 20 and the LXC version is

> rpm -qa | grep lxc
> libvirt-daemon-lxc-1.1.3.4-4.fc20.x86_64
> libvirt-daemon-driver-lxc-1.1.3.4-4.fc20.x86_64
> lxc-devel-1.0.0-1.fc20.x86_64
> lxc-debuginfo-1.0.0-1.fc20.x86_64
> lxc-libs-1.0.0-1.fc20.x86_64
> lxc-1.0.0-1.fc20.x86_64

> the configuration is:
> 
> lxc.start.auto = 0
> lxc.start.delay = 5
> lxc.start.order = 10
> 
> # When using LXC with apparmor, uncomment the next line to run unconfined:
> #lxc.aa_profile = unconfined
> 
> lxc.cgroup.devices.deny = a
> # /dev/null and zero
> lxc.cgroup.devices.allow = c 1:3 rwm
> lxc.cgroup.devices.allow = c 1:5 rwm
> # consoles
> lxc.cgroup.devices.allow = c 5:1 rwm
> lxc.cgroup.devices.allow = c 5:0 rwm
> lxc.cgroup.devices.allow = c 4:0 rwm
> lxc.cgroup.devices.allow = c 4:1 rwm
> # /dev/{,u}random
> lxc.cgroup.devices.allow = c 1:9 rwm
> lxc.cgroup.devices.allow = c 1:8 rwm
> lxc.cgroup.devices.allow = c 136:* rwm
> lxc.cgroup.devices.allow = c 5:2 rwm
> # rtc
> lxc.cgroup.devices.allow = c 254:0 rwm
> 
> # mounts point
> lxc.mount.entry = proc proc proc nodev,noexec,nosuid 0 0
> lxc.mount.entry = sysfs sys sysfs defaults  0 0
> lxc.mount.entry = /images  /var/lib/lxc/utel-kde/rootfs/images none bind 0 0
> 
> 
> lxc.network.type=macvlan
> lxc.network.macvlan.mode=bridge
> lxc.network.link=eth1
> lxc.network.flags=up
> lxc.network.hwaddr = e2:91:a8:17:97:e4
> lxc.network.ipv4 = 0.0.0.0/21
> 
> 
> How do make the kernel loop module available for the container?
> 
> Yours
> Philip
> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users

-- 
Michael H. Warfield (AI4NB) | (770) 978-7061 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
 PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 482 bytes
Desc: This is a digitally signed message part
URL: <http://lists.linuxcontainers.org/pipermail/lxc-users/attachments/20140506/0f158c46/attachment.sig>