rpms/kexec-tools
5
0
Fork 0
Code Issues Pull Requests Releases Activity

add helper functions to get dump mode

Browse Source 
Resolves: bz1895258
Upstream: Fedora
Conflict: None

commit 3d2079c31c
Author: Coiby Xu <coxu@redhat.com>
Date:   Wed Dec 1 16:57:15 2021 +0800

    add helper functions to get dump mode

    Add a helper function to get dump mode. The dump mode would be
     - fadump if fadump=on or fadump=nocma
     - kdump if fadump=off or empty fadump

    Otherwise return 1.

    Also add another helper function to return a kernel's dump mode.

    Reviewed-by: Pingfan Liu <piliu@redhat.com>
    Reviewed-by: Philipp Rudo <prudo@redhat.com>
    Signed-off-by: Coiby Xu <coxu@redhat.com>

Signed-off-by: Coiby Xu <coxu@redhat.com>
This commit is contained in:
Coiby Xu 2022-01-05 11:53:09 +08:00 committed by Tao Liu
parent 27b5ab3cbb
commit d5cf913260
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
kdumpctl
View File

@ -1317,6 +1317,40 @@ get_grub_kernel_boot_parameter()
grubby --info="$_kernel_path" | sed -En -e "/^args=.*$/{s/^.*(\s|\")${_para}=(\S*).*\"$/\2/p;q}"
}
# get dump mode by fadump value
# return
# - fadump, if fadump=on or fadump=nocma
# - kdump, if fadump=off or empty fadump, return kdump
# - error if otherwise
get_dump_mode_by_fadump_val()
{
local _fadump_val=$1
if [[ -z $_fadump_val ]] || [[ $_fadump_val == off ]]; then
echo -n kdump
elif [[ $_fadump_val == on ]] || [[ $_fadump_val == nocma ]]; then
echo -n fadump
else
derror "invalid fadump=$_fadump_val"
return 1
fi
}
# get dump mode of a specific kernel
# based on its fadump kernel cmdline parameter
get_dump_mode_by_kernel()
{
local _kernel_path=$1 _fadump_val _dump_mode
_fadump_val=$(get_grub_kernel_boot_parameter "$_kernel_path" fadump)
if _dump_mode=$(get_dump_mode_by_fadump_val "$_fadump_val"); then
echo -n "$_dump_mode"
else
derror "failed to get dump mode for kernel $_kernel_path"
exit
fi
}
reset_crashkernel()
{
local kernel=$1 entry crashkernel_default