From: dyoung@redhat.com <dyoung@redhat.com>
Date: Thu, 23 Aug 2012 03:02:24 +0000 (+0800)
Subject: Add a dracut option --device to bring up a device in initramfs
X-Git-Tag: 024~100
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=52f1b04183a6a1e0cfbb7e5b46c8d371fdadea5b;p=thirdparty%2Fdracut.git

Add a dracut option --device to bring up a device in initramfs

Kdump support dump to raw device which could be on top of complex storage
such as multipath and iscsi which are standalone dracut modules.

Add a --device option to dracut which will add the device to host_devs so
dracut can add the dependent modules automaticlly and enable them in initramfs.

--device will accept device node name as the param.

Signed-off-by: Dave Young <dyoung@redhat.com>
Tested-by: Chao Wang <chaowang@redhat.com>
---

diff --git a/dracut.8.asc b/dracut.8.asc
index 0902b3b26..203f9cde6 100644
--- a/dracut.8.asc
+++ b/dracut.8.asc
@@ -321,6 +321,9 @@ provide a valid _/etc/fstab_.
     Mount _<device>_ on _<mountpoint>_ with _<filesystem type>_ and _<filesystem
     options>_ in the initramfs
 
+**--device** _<device>_ ::
+    Bring up _<device>_ in initramfs, _<device>_ should be the device name
+
 **-i, --include** _<SOURCE>_ _<TARGET>_::
     include the files in the SOURCE directory into the
     TARGET directory in the final initramfs. If SOURCE is a file, it will be
diff --git a/dracut.sh b/dracut.sh
index 2b0b08559..a6f619322 100755
--- a/dracut.sh
+++ b/dracut.sh
@@ -133,6 +133,7 @@ Creates initial ramdisk images for preloading modules
   --mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
                         Mount device [DEV] on mountpoint [MP] with filesystem
                         [FSTYPE] and options [FSOPTS] in the initramfs
+  --device "[DEV]"      Bring up [DEV] in initramfs
   -i, --include [SOURCE] [TARGET]
                         Include the files in the SOURCE directory into the
                          Target directory in the final initramfs.
@@ -261,6 +262,7 @@ TEMP=$(unset POSIXLY_CORRECT; getopt \
     --long fscks: \
     --long add-fstab: \
     --long mount: \
+    --long device: \
     --long nofscks: \
     --long ro-mnt \
     --long kmoddir: \
@@ -327,6 +329,7 @@ while :; do
         --fscks)       push fscks_l              "$2"; shift;;
         --add-fstab)   push add_fstab_l          "$2"; shift;;
         --mount)       push fstab_lines          "$2"; shift;;
+        --device)      push host_devs            "$2"; shift;;
         --nofscks)     nofscks_l="yes";;
         --ro-mnt)      ro_mnt_l="yes";;
         -k|--kmoddir)  drivers_dir_l="$2"; shift;;