On Tue, 21 Oct 2003 15:19:48 -0400 "Vsevolod (Simon) Ilyushchenko" <[EMAIL PROTECTED]>
wrote:
| Hi,
|
| Is it possible to boot off of an USB device in 2.4.22? There was a patch
| that allowed for long recognition times in earlier kernels, but it does
| not apply now. I have seen some discussion on this list and on the
| linux-kernel list about it, but have not found any conclusive patches or
| suggestions.
Hi Simon,
I have updated one of the 2 patches that have been known to work for this,
although they worked around 2.4.14 or so.
I don't have a way to test this. Can you or anyone test this patch?
Thanks,
--
~Randy
description: Allows a system to boot with the root fs as a USB
storage (or other hotplug) device.
Note: It's been reported that this patch doesn't work
if you enable devfs!
product_versions: Linux 2.4.22
patch_name: usbboot-2422.patch
author: Randy.Dunlap <[EMAIL PROTECTED]> (for 2.4.22)
Originally by Eric Lammerts <[EMAIL PROTECTED]>
for 2.4.14-pre8.
patch_version: 2003-10-28.20:57:35
diffstat:=
init/do_mounts.c | 13 +++++++++----
1 files changed, 9 insertions(+), 4 deletions(-)
diff -Naurp ./init/do_mounts.c~usbboot ./init/do_mounts.c
--- ./init/do_mounts.c~usbboot 2003-08-25 04:44:44.000000000 -0700
+++ ./init/do_mounts.c 2003-10-28 20:53:29.000000000 -0800
@@ -366,11 +366,16 @@ retry:
* Allow the user to distinguish between failed open
* and bad superblock on root device.
*/
- printk ("VFS: Cannot open root device \"%s\" or %s\n",
+ printk ("VFS: Cannot open root device \"%s\" or %s, retrying in 1
second.\n",
root_device_name, kdevname (ROOT_DEV));
- printk ("Please append a correct \"root=\" boot option\n");
- panic("VFS: Unable to mount root fs on %s",
- kdevname(ROOT_DEV));
+ printk ("You may need to append a correct \"root=\" boot option\n");
+ printk ("or wait for the root device to become ready.\n");
+
+ /* wait 1 second and try again,
+ * allowing time for hubs/devices to become ready */
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ);
+ goto retry;
}
panic("VFS: Unable to mount root fs on %s", kdevname(ROOT_DEV));
out:
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