linux-kernel - Re: [patch 3/4] fastboot: make the raid autodetect code wait for all devices to init

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Message-ID: <20080720163126.64b39d50@infradead.org>
Date:	Sun, 20 Jul 2008 16:31:26 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Neil Brown <neilb@...e.de>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu,
	Simon Arlott <simon@...e.lp0.eu>,
	Daniel Walker <dwalker@...sta.com>,
	Rene Herman <rene.herman@...access.nl>
Subject: Re: [patch 3/4] fastboot: make the raid autodetect code wait for
 all devices to init

On Mon, 21 Jul 2008 09:06:36 +1000
Neil Brown <neilb@...e.de> wrote:

>     if (driver_probe_done() != 0) {
> 	printk("md: Waiting for all devices to be available before
> autodetect\n" "md:  If you don't boot off raid, use
> raid=noautodetect\n"); do


how about this patch?

From: Arjan van de Ven <arjan@...ux.intel.com>
Date: Sun, 20 Jul 2008 16:30:29 -0700
Subject: [PATCH] fastboot: make the RAID autostart code print a message just before waiting

As requested/suggested by Neil Brown: make the raid code print that it's
about to wait for probing to be done as well as give a suggestion on how
to disable the probing if the user doesn't use raid.

Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com
---
 init/do_mounts_md.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index c0412a9..2ab122a 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -275,7 +275,9 @@ void __init md_run_setup(void)
 		 * Since we don't want to detect and use half a raid array, we need to
 		 * wait for the known devices to complete their probing
 		 */
-		while (driver_probe_done() != 0)
+		printk(KERN_INFO "md: Waiting for all devices to be available before autodetect\n");
+		printk(KERN_INFO "md: If you don't use raid, use raid=noautodetect\n");
+		while (driver_probe_done())
 			msleep(100);
 		int fd = sys_open("/dev/md0", 0, 0);
 		if (fd >= 0) {
-- 
1.5.5.1

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