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SubjectRe: waiting 10s before mounting root filesystem?
Marcelo Tosatti <marcelo.tosatti@cyclades.com> wrote:
>
> On Fri, Dec 31, 2004 at 01:49:05AM -0800, Andrew Morton wrote:
> > William Park <opengeometry@yahoo.ca> wrote:
> > >
> > > - printk("VFS: Cannot open root device \"%s\" or %s\n",
> > > - root_device_name, b);
> > > - printk("Please append a correct \"root=\" boot option\n");
> > > + if (--tryagain) {
> > > + printk (KERN_WARNING "VFS: Waiting %dsec for root device...\n", tryagain);
> > > + ssleep (1);
> > > + goto retry;
> > > + }
> > > + printk (KERN_CRIT "VFS: Cannot open root device \"%s\" or %s\n", root_device_name, b);
> > > + printk (KERN_CRIT "Please append a correct \"root=\" boot option\n");
> >
> > Why is this patch needed? If it is to offer the user a chance to insert
> > the correct medium or to connect the correct device,
>
> The media may take a while to become readable (think of CDROM).
>

But the device driver should wait while the media spins up. If it doesn't,
the kernel would get I/O errors all over the place in normal operation.

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