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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