openstack team mailing list archive

[Chuck Short <chuck.short@xxxxxxxxxxxxx>]

Hi,

Can you please open up a bug in Launchpad please?


thanks
chuck

On Tue, 5 Jun 2012 15:38:11 -0700 (PDT)
David Kang <dkang@xxxxxxx> wrote:

> 
>  Hello,
> 
>  We are using Essex version.
> We are testing volume attachment to an LXC instance.
> >From the code, the volume is mounted by the host machine to the file
> >system of the LXC instance.
> 
> # nova/virt/disk/api.py
> utils.execute('mount', '-o', 'bind', src, target,
>                 run_as_root=True)
> 
> >From the host machine, it is visible.
> But, inside of the LXC instance, it is not visible.
> Does this method work?
> 
>  Before Essex, we used "lxc-attach" command to run "mknod" command
> inside of the LXC instance instead of "mount" it by the host outside
> of the LXC instance. It did work.
> 
>  Here are the content of the dev directory shown inside of the LXC
> instance, and at the host side. Both are different. And dynamic
> changes done by the host outside of the LXC instance is not shown
> inside of the LXC instance. Is our LXC configuration or our LXC image
> is wrong?
> 
> 1. Inside the LXC instance 
> $ ls /dev
> console  full  null  nvidia0  nvidia1  nvidia2  nvidia3  nvidiactl
> ptmx  pts  random  tty  tty1  urandom  zero
> 
> 2. At the host
> $ ls /usr/local/nova/instances/instance-0000004f/rootfs/dev/
> block            crash  full       kmsg   loop5    mapper  nbd13
> nbd7                oldmem  ram11  ram5    rtc   sg2  shm
> tty0   tty16  tty23  tty30  tty38  tty45  tty52  tty6   ttyS0
> usbmon3  vcs2   vcsa3        zero bsg              disk   fuse
> kvm    loop6    mcelog  nbd14  nbd8                port    ram12
> ram6    rtc0  sg3  snapshot  tty1   tty17  tty24  tty31  tty39
> tty46  tty53  tty60  ttyS1    usbmon4  vcs3   vcsa4 bus
> dm-0   fw0        log    loop7    mem     nbd15  nbd9
> ppp     ram13  ram7    sda   sg4  snd       tty10  tty18  tty25
> tty32  tty4   tty47  tty54  tty61  ttyS2    usbmon5  vcs4   vcsa5
> char             dm-1   hidraw0    loop0  lp0      nbd0    nbd2
> net                 ptmx    ram14  ram8    sda1  sg5  stderr
> tty11  tty19  tty26  tty33  tty40  tty48  tty55  tty62  ttyS3
> usbmon6  vcs5   vcsa6 console          dm-2   hidraw1    loop1
> lp1      nbd1    nbd3   network_latency     pts     ram15  ram9
> sdb   sg6  stdin     tty12  tty2   tty27  tty34  tty41  tty49  tty56
> tty63  urandom  usbmon7  vcs6   vdc core             fb
> hugepages  loop2  lp2      nbd10   nbd4   network_throughput  ram0
> ram2   random  sdb1  sg7  stdout    tty13  tty20  tty28  tty35
> tty42  tty5   tty57  tty7   usbmon0  usbmon8  vcsa   vga_arbiter
> cpu              fb0    hvc0       loop3  lp3      nbd11   nbd5
> null                ram1    ram3   raw     sg0   sg8  systty
> tty14  tty21  tty29  tty36  tty43  tty50  tty58  tty8   usbmon1
> vcs      vcsa1  vhost-net cpu_dma_latency  fd     input      loop4
> MAKEDEV  nbd12   nbd6   nvram               ram10   ram4   root
> sg1   sg9  tty       tty15  tty22  tty3   tty37  tty44  tty51  tty59
> tty9   usbmon2  vcs1     vcsa2  VolGroup
> 
>  Thanks,
>  David
> 
> ----------------------
> Dr. Dong-In "David" Kang
> Computer Scientist
> USC/ISI
> 
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