Coda File System

Re: Error message on boot

From: Jan Harkes <>
Date: Mon, 20 Mar 2000 17:34:49 -0500
On Mon, Mar 20, 2000 at 05:13:06PM -0500, Vic Kass wrote:
> I have just installed coda on two Redhat 6.1 systems. Both
> are running the 2.2.14 kernel.  When both systems boot up,
> the following message is displayed:
>     kernel: coda_psdev_write: downcall, no SB!

That's not a problem, the client is just very eager to make sure the
kernel doesn't have bad state cached and starts chattering before the
mount has completed.

> I've checked numerous sources, including the coldalist archives,
> and found no reference to the above message. The message
> occurs as venus.init is starting. Both the 5.3.5-1 server and
> client were installed. Another message that came up was:
>     Kernel version ioctl failed (Inappropriate ioctl for device)!

That is another non-problem, the initial linux-2.3 kernel needed some
special downcalls for which we needed to be able to detect whether the
kernel supports them. We added an ioctl to check for these features.
Linux-2.2 kernels do not have the ioctl (and don't support the new
downcalls) and this message is displayed.

Recently the address-space changes have allowed us to fall back to the
previously used methods and there is no difference between the kernels
anymore, expect this message to disappear.

Received on 2000-03-20 17:53:56