Tom Haynes wrote:
> Pavel Filipensky wrote:
> > Hi NFS community,
> >
> > this a code review request for fix which is contributed by Juergen Keil
> > <jk at tools.de>.
> > I am acting as a sponsor (more about sponsoring:
> > http://opensolaris.org/os/community/on/crt/sponsor-tasks/).
> >
> > Webrev can be found here: http://cr.opensolaris.org/~pavelf/6317111
> >
> > and contains fixes for:
> >
> > 6317111 newboot x86 diskless client refuses to use nfs vers3 for root
> > filesystem
> > 6350002 newboot: failed VFS_MOUNTROOT() panics with a useless error message
> > 6350006 BAD TRAP panic, when using unknown nfs protocol version in fstype
> > property
> >
> >
> http://cr.opensolaris.org/~pavelf/6317111/usr/src/uts/common/fs/vfs.c.frames.html
>
> 4524 if (vsw == NULL) {
> 4525 cmn_err(CE_CONT, "Cannot find %s filesystem\n", fstyp);
> 4526 return (ENXIO);
> 4527 }
>
>
> The callers already expect to handle ENXIO?
Yes. This new return is added in rootconf(), and the only caller is
vfs_mountroot(),
which does handle any error by calling panic():
if (rootconf())
panic("vfs_mountroot: cannot mount root");
> -----
>
>
> 4546 else
> 4547 cmn_err(CE_CONT, "?root on %s fstype %s\n",
> 4548 rootfs.bo_name, fstyp);
>
>
> What does "?root" mean?
The message is always sent to the system log, but is only written to the
console when
the system has been booted in verbose mode.
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