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kdumpctl: fix status check when CONFIG_CRASH_DUMP is not enabled in kernel 

When kexec_crash_loaded does not exist, means kdump was not enabled in
kernel we get

$ kdumpctl status
cat: /sys/kernel/kexec_crash_loaded: No such file or directory
/usr/bin/kdumpctl: line 879: [: ==: unary operator expected
Kdump is not operational

After this patch:
$ kdumpctl status
Perhaps CONFIG_CRASH_DUMP is not enabled in kernel
Kdump is not operational

Signed-off-by: Pratyush Anand <panand@redhat.com>
Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com>
Reviewed-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
This commit is contained in:
Pratyush Anand 2017-04-07 09:47:33 +05:30 committed by Dave Young
parent 961bda9152
commit 21dcf7e3b1
1 changed files with 5 additions and 0 deletions
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5
kdumpctl
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@ -876,6 +876,11 @@ check_current_fadump_status()
check_current_kdump_status()
{
if [ ! -f /sys/kernel/kexec_crash_loaded ];then
echo "Perhaps CONFIG_CRASH_DUMP is not enabled in kernel"
return 1
fi
rc=`cat /sys/kernel/kexec_crash_loaded`
if [ $rc == 1 ]; then
return 0