From de1ba09b214056365d9082982905b255caafb7a2 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Fri, 8 Dec 2006 02:39:42 -0800 Subject: [PATCH] fault injection: documentation and scripts This patch set provides some fault-injection capabilities. - kmalloc() failures - alloc_pages() failures - disk IO errors We can see what really happens if those failures happen. In order to enable these fault-injection capabilities: 1. Enable relevant config options (CONFIG_FAILSLAB, CONFIG_PAGE_ALLOC, CONFIG_MAKE_REQUEST) and if you want to configure them via debugfs, enable CONFIG_FAULT_INJECTION_DEBUG_FS. 2. Build and boot with this kernel 3. Configure fault-injection capabilities behavior by boot option or debugfs - Boot option failslab= fail_page_alloc= fail_make_request= - Debugfs /debug/failslab/* /debug/fail_page_alloc/* /debug/fail_make_request/* Please refer to the Documentation/fault-injection/fault-injection.txt for details. 4. See what really happens. Signed-off-by: Akinobu Mita Signed-off-by: Don Mullis Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/fault-injection/failcmd.sh | 4 ++++ 1 file changed, 4 insertions(+) create mode 100644 Documentation/fault-injection/failcmd.sh (limited to 'Documentation/fault-injection/failcmd.sh') diff --git a/Documentation/fault-injection/failcmd.sh b/Documentation/fault-injection/failcmd.sh new file mode 100644 index 00000000000..63177aba810 --- /dev/null +++ b/Documentation/fault-injection/failcmd.sh @@ -0,0 +1,4 @@ +#!/bin/bash + +echo 1 > /proc/self/make-it-fail +exec $* -- cgit v1.2.3-70-g09d2