[Xen-devel] Re: Timeout connecting to device

[Arun Sharma <arun.sharma@xxxxxxxxx>]

I didn't see any responses to this query. I also see:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=176

which is essentially the same issue. Do VBDs work for anyone on the list?

It sounds like

> XENBUS xs_read_watch: 0

is an indication of the fact that after the right entries were made in 
xenstore (I can see them on /var/lib/xenstored/store/domain), but xenbus 
 is not able to read events?
# find . -name *end
./a9b503a7-2494-409f-9e06-2bd1f9283953/device/vbd/768/backend
./45194ebb-4029-4131-9013-d17cd3dbc828/device/vbd/768/backend
./53ffa08b-5f90-45a4-9671-8d6fff7f8509/backend
./53ffa08b-5f90-45a4-9671-8d6fff7f8509/backend/vbd/a9b503a7-2494-409f-9e06-2bd1f9283953/768/frontend
./53ffa08b-5f90-45a4-9671-8d6fff7f8509/backend/vbd/45194ebb-4029-4131-9013-d17cd3dbc828/768/frontend

Couple of questions:

- is there a way to debug xenstored? It doesn't seem to be logging much.
- Could we add some debug flags elsewhere as well (xenbus with debug=1?) 
to make debugging problems of this nature easier?
A golden "working" log file would also be useful so we can compare our 
logs against it..
        -Arun

Arun Sharma wrote:
> Is there any userspace configuration I'm missing?
>
>     -Arun
>
> xen_blk: Initialising virtual block device driver
> XENBUS xs_read_watch: 0
> xen_blk: Timeout connecting to device!
> Netdev frontend (TX) is using grant tables.
> Netdev frontend (RX) is using grant tables.
> xen_net: Initialising virtual ethernet driver.
> CBNET: Registered protocol family 2
> IP: routing cache hash table of 256 buckets, 4Kbytes
> TCP established hash table entries: 4096 (order: 4, 65536 bytes)
> TCP bind hash table entries: 4096 (order: 3, 49152 bytes)
> TCP: Hash tables configured (established 4096 bind 4096)
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> Root-NFS: No NFS server available, giving up.

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