Date: Sat, 10 Jan 2009 16:23:48 +0100 From: "Olivier SMEDTS" <olivier@gid0.org> To: "Hans Petter Selasky" <hselasky@c2i.net> Cc: Ed Maste <emaste@freebsd.org>, freebsd-usb@freebsd.org Subject: Re: Advice on booting from usb2 Message-ID: <367b2c980901100723h19dc2ff6x55a48c96dcdce9b3@mail.gmail.com> In-Reply-To: <200901101508.44659.hselasky@c2i.net> References: <200901101332.04206.Thomas.Sparrevohn@btinternet.com> <200901101508.44659.hselasky@c2i.net>
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2009/1/10 Hans Petter Selasky <hselasky@c2i.net>:
> On Saturday 10 January 2009, Thomas Sparrevohn wrote:
>> I have a 4GB SDHC card that I have formatted with ufs and installed a
>> current kernel on - Its connected to a USB reader. Now here is the thing -
>> I can boot the kernel with USB2 well enough but when it comes to mount root
>> - it looks like USB2 has not probed and attached the device yet and I get
>> the "mount root from" prompt - however it does not show the cam devices
>>
>> Any advice?
>
> It's being worked on by "Ed Maste <emaste@freebsd.org>".
>
> Temporary patch is available here for kern/vfs_mount.c :
Great, my ZFS-only USB key could only boot by mounting root manually.
I'll try this.
Cheers
> --- vfs_mount.c.orig Mon Dec 22 14:43:36 2008
> +++ vfs_mount.c Mon Dec 22 15:09:14 2008
> @@ -58,6 +58,7 @@
> #include <sys/sysent.h>
> #include <sys/systm.h>
> #include <sys/vnode.h>
> +#include <sys/cons.h>
> #include <vm/uma.h>
>
> #include <geom/geom.h>
> @@ -1606,7 +1607,11 @@
> vfs_mountroot(void)
> {
> char *cp;
> - int error, i, asked = 0;
> + const char *rootdevname_orig;
> + int error;
> + unsigned int i;
> + unsigned char asked = 0; /* set if asked for mount point */
> + unsigned char timeout = 16; /* seconds */
>
> root_mount_prepare();
>
> @@ -1624,6 +1629,10 @@
> asked = 1;
> }
>
> + /* store a copy of the initial root device name */
> + rootdevname_orig = ctrootdevname;
> + retry:
> +
> /*
> * The root filesystem information is compiled in, and we are
> * booted with instructions to use it.
> @@ -1674,12 +1683,27 @@
> if (!vfs_mountroot_try(ctrootdevname))
> goto mounted;
> /*
> - * Everything so far has failed, prompt on the console if we haven't
> - * already tried that.
> + * Check if we should try more times.
> + */
> + if (timeout != 0) {
> + timeout--;
> + pause("WROOT", hz);
> + if (cncheckc() == -1) {
> + /* no key press - try again */
> + ctrootdevname = rootdevname_orig;
> + goto retry;
> + }
> + }
> +
> + /*
> + * Everything so far has failed, prompt on the console if we
> + * haven't already tried that.
> */
> - if (!asked)
> + if (!asked) {
> + printf("\n");
> if (!vfs_mountroot_ask())
> goto mounted;
> + }
>
> panic("Root mount failed, startup aborted.");
>
> --HPS
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>
--
Olivier Smedts _
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