Loop devices inside OpenVZ container

[ben]

Hi all,

I can't figure out, how to access a loop device inside an OpenVZ container running under ProxMox 2.0:

# losetup -f
/dev/loop0
# vzctl set 100 --devnodes loop0:rw
Device loop0 is not allowed to be assigned to a CT
Bad parameter for --devnodes: loop0:rw

This alternative way doesn't work either:

# ls -l /dev/loop0
brw-rw---- 1 root disk 7, 0 Apr 17 16:06 /dev/loop0
# vzctl set 100 --devices b:7:0:rw
Bad parameter for --devices: b:7:0:rw

Could this be an issue with the 2.6.32 kernel?

I tested and it doesn't work under:

• ProxMox 2.0 with pve-kernel-2.6.32-11-pve: 2.6.32-66
• ProxMox 1.9 with pve-kernel-2.6.32-4-pve: 2.6.32-33

But it DOES work under:

• ProxMox <= 1.9 with kernel 2.6.24
• (out of curiosity: Ubuntu 8.04 with kernel 2.6.24-31-openvz)

Any hints to solve this problem would be highly appreciated.

Best Regards,
Ben

 

[testbot]

just in case someone stumbles across this... the ability to create loop devices inside openvz containers was disabled due to a security flaw. doesn't have anything to do with proxmox.