tags 619065 + moreinfo thanks Hi Hilko--
On 03/20/2011 06:03 PM, Hilko Bengen wrote:
> a symlink (/dev/etherd/e1.1 -> /path/to/file) is created from the script
> /usr/share/vblade-persist/vblade-run. This is problematic: /dev/etherd
> is the directory in which the Linux kernel-based AoE initiator keeps its
> device nodes.
>
> If a machine acts both as AoE initiator and target, the device node
> created by a kernel driver may be clobbered by vblade-persist starting
> or stopping a target.
Thanks for the report!
I don't think this is a problem, because aoetools doesn't seem to
trigger for aoe devices on the local machine's network interface. If
you know otherwise, i'd be happy to hear of a specific configuration
where this is the case.
I currently have aoetools and vblade installed on a machine *without*
vblade-persist, and i'm trying to replicate the situation you describe.
The device node does not show up:
0 pip:~# grep INTERFACES /etc/default/aoetools
INTERFACES="eth0"
0 pip:~# ls -la /dev/etherd/
total 0
drwxr-xr-x 2 root root 140 Mar 20 21:01 .
drwxr-xr-x 22 root root 3480 Mar 20 21:01 ..
c-w--w---- 1 root disk 152, 3 Mar 20 21:01 discover
cr--r----- 1 root disk 152, 2 Mar 20 21:01 err
c-w--w---- 1 root disk 152, 6 Mar 20 21:01 flush
c-w--w---- 1 root disk 152, 4 Mar 20 21:01 interfaces
c-w--w---- 1 root disk 152, 5 Mar 20 21:01 revalidate
0 pip:~# vblade 1 1 eth0 /tmp/test &
[1] 28558
0 pip:~# pid 28558: e1.1, 2048 sectors O_RDWR
vblade 1 ls -la /dev/etherd/
total 0
drwxr-xr-x 2 root root 140 Mar 20 21:01 .
drwxr-xr-x 22 root root 3480 Mar 20 21:01 ..
c-w--w---- 1 root disk 152, 3 Mar 20 21:01 discover
cr--r----- 1 root disk 152, 2 Mar 20 21:01 err
c-w--w---- 1 root disk 152, 6 Mar 20 21:01 flush
c-w--w---- 1 root disk 152, 4 Mar 20 21:01 interfaces
c-w--w---- 1 root disk 152, 5 Mar 20 21:01 revalidate
127 pip:~# /etc/init.d/aoetools restart
Starting AoE devices discovery and mounting AoE filesystems: Nothing to
mount.
0 pip:~# ls -la /dev/etherd/
total 0
drwxr-xr-x 2 root root 140 Mar 20 21:01 .
drwxr-xr-x 22 root root 3480 Mar 20 21:01 ..
c-w--w---- 1 root disk 152, 3 Mar 20 21:01 discover
cr--r----- 1 root disk 152, 2 Mar 20 21:01 err
c-w--w---- 1 root disk 152, 6 Mar 20 21:01 flush
c-w--w---- 1 root disk 152, 4 Mar 20 21:01 interfaces
c-w--w---- 1 root disk 152, 5 Mar 20 21:01 revalidate
0 pip:~#
The links are created there by vblade-persist precisely so that a
machine can both offer and consume AoE, while seeing what its other
peers see.
Can you show me the configuration you're using where this causes a
conflict? Maybe i'm using a different set of AoE utilities than you
are. I'll be happy to fix things if i can replicate the conflict, but i
don't see one at the moment.
Regards,
--dkg
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