From f276dd9842f8ecb7d33fb1fd8a1a0386958774c7 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 Nov 2009 07:32:09 -0800 Subject: [PATCH] mount_root: clarify error messages for when no rootfs found To an end user who doesn't really know linux that well, a message like: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) may just look like cryptic computer speak indicating some deep and complex problem, instead of the reality that they have a simple local configuration problem. Ideally it would be nice to not use the misleading "panic" at all, but since various panic notifiers are historically expecting to be called when there is no valid rootfs, we can't change that. So instead, this tries to make it 100% clear to folks of any background that it is an end user configuration issue. Signed-off-by: Paul Gortmaker Signed-off-by: Darren Hart --- init/do_mounts.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/init/do_mounts.c b/init/do_mounts.c index 29d326b6c29d..882307e6dd90 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -458,7 +458,9 @@ void __init mount_block_root(char *name, int flags) printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify " "explicit textual name for \"root=\" boot option.\n"); #endif - panic("VFS: Unable to mount root fs on %s", b); + printk(KERN_EMERG "VFS: Unable to mount root fs on %s\n", b); + printk(KERN_EMERG "User configuration error - no valid root filesystem found\n"); + panic("Invalid configuration from end user prevents continuing"); } if (!(flags & SB_RDONLY)) { flags |= SB_RDONLY; @@ -471,7 +473,9 @@ void __init mount_block_root(char *name, int flags) for (p = fs_names; *p; p += strlen(p)+1) printk(" %s", p); printk("\n"); - panic("VFS: Unable to mount root fs on %s", b); + printk(KERN_EMERG "VFS: Unable to mount root fs on %s\n", b); + printk(KERN_EMERG "User configuration error - no valid root filesystem found\n"); + panic("Invalid configuration from end user prevents continuing"); out: put_page(page); } -- 2.19.1