Re: [PATCH v2] kdumpctl: filter 'root' kernel parameter when running in live images
On 10/13/16 at 04:16pm, Tong Li wrote:
Live images are booted with a kernel parameter which looks like
"root=live:CDLABEL=Fedora-WS-Live-25_A-2". This argument can't be
recognized by dracut during kdump process and will cause failure
of kdump if users didn't set KUDMP_COMMANDLINE in /etc/sysconfig/kdump.
So we should filter 'root' out when we find such a parameter in
/proc/cmdline to make kdump work correctly in live images.
Signed-off-by: Tong Li <tonli(a)redhat.com>
---
kdumpctl | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kdumpctl b/kdumpctl
index d0bbb55..13d85c6 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -106,6 +106,10 @@ prepare_cmdline()
local cmdline;
if [ -z "$KDUMP_COMMANDLINE" ]; then
cmdline=`cat /proc/cmdline`
+ # 'root' parameter will result kdump failure in live images
~~~
cuase kdump failure
> + if [[ ${cmdline} == *"root=live"* ]]; then
> + KDUMP_COMMANDLINE_REMOVE="${KDUMP_COMMANDLINE_REMOVE} root"
> + fi
> else
> cmdline=${KDUMP_COMMANDLINE}
> fi
> --
> 2.7.4
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