Messages in this thread | | | Date | Fri, 31 Dec 2004 06:58:20 -0200 | From | Marcelo Tosatti <> | Subject | Re: waiting 10s before mounting root filesystem? |
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On Fri, Dec 31, 2004 at 11:26:34AM +0000, Paulo Marques wrote: > 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, why not rely upon the > >user doing that thing and then hitting reset? > > No, no. The problem is not user interaction. > > The problem is that the USB subsystem takes a lot of time to go through > the hostcontrollers -> hubs -> devices. By the time it finds the USB > mass storage that is supposed to be used as root filesystem, the kernel > had already panic'ed. > > IMHO the kernel should handle this case just fine, without the need for > initrd's. After all the user says "my root filesystem is /dev/sda1", and > the kernel panic's even though the filesystem is there. This doesn't > seem like a correct bahavior.
Well, Paulo's has more of a clue than I do.
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