[PATCH v5 02/13] factor out kdump_get_arch_recommend_crashkernel

Factor out kdump_get_arch_recommend_crashkernel to prepare for kdump-anaconda-plugin for example to retrieve the default crashkernel value. Note the support of crashkenrel.default is dropped. Reviewed-by: Pingfan Liu <piliu(a)redhat.com&gt; Signed-off-by: Coiby Xu <coxu(a)redhat.com&gt; --- kdump-lib.sh | 60 +++++++++++++++++++++++++++++++--------------------- 1 file changed, 36 insertions(+), 24 deletions(-) diff --git a/kdump-lib.sh b/kdump-lib.sh index b8f6c96..b28db44 100755 --- a/kdump-lib.sh +++ b/kdump-lib.sh @@ -822,40 +822,52 @@ get_recommend_size() IFS="$OLDIFS" } +# get default crashkernel +# $1 dump mode, if not specified, dump_mode will be judged by is_fadump_capable +kdump_get_arch_recommend_crashkernel() +{ + local _arch _ck_cmdline _dump_mode + + if [[ -z "$1" ]]; then + if is_fadump_capable; then + _dump_mode=fadump + else + _dump_mode=kdump + fi + else + _dump_mode=$1 + fi + + _arch=$(uname -m) + + if [[ $_arch == "x86_64" ]] || [[ $_arch == "s390x" ]]; then + _ck_cmdline="1G-4G:192M,4G-64G:256M,64G-:512M" + elif [[ $_arch == "aarch64" ]]; then + _ck_cmdline="2G-:448M" + elif [[ $_arch == "ppc64le" ]]; then + if [[ $_dump_mode == "fadump" ]]; then + _ck_cmdline="4G-16G:768M,16G-64G:1G,64G-128G:2G,128G-1T:4G,1T-2T:6G,2T-4T:12G,4T-8T:20G,8T-16T:36G,16T-32T:64G,32T-64T:128G,64T-:180G" + else + _ck_cmdline="2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G" + fi + fi + + _ck_cmdline=${_ck_cmdline//-:/-102400T:} + echo -n "$_ck_cmdline" +} + # return recommended size based on current system RAM size # $1: kernel version, if not set, will defaults to $(uname -r) kdump_get_arch_recommend_size() { - local kernel=$1 arch + local _ck_cmdline if ! [[ -r "/proc/iomem" ]]; then echo "Error, can not access /proc/iomem." return 1 fi - - [[ -z $kernel ]] && kernel=$(uname -r) - ck_cmdline=$(cat "/usr/lib/modules/$kernel/crashkernel.default" 2> /dev/null) - - if [[ -n $ck_cmdline ]]; then - ck_cmdline=${ck_cmdline#crashkernel=} - else - arch=$(lscpu | grep Architecture | awk -F ":" '{ print $2 }' | tr '[:lower:]' '[:upper:]') - if [[ $arch == "X86_64" ]] || [[ $arch == "S390X" ]]; then - ck_cmdline="1G-4G:192M,4G-64G:256M,64G-:512M" - elif [[ $arch == "AARCH64" ]]; then - ck_cmdline="2G-:448M" - elif [[ $arch == "PPC64LE" ]]; then - if is_fadump_capable; then - ck_cmdline="4G-16G:768M,16G-64G:1G,64G-128G:2G,128G-1T:4G,1T-2T:6G,2T-4T:12G,4T-8T:20G,8T-16T:36G,16T-32T:64G,32T-64T:128G,64T-:180G" - else - ck_cmdline="2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G" - fi - fi - fi - - ck_cmdline=${ck_cmdline//-:/-102400T:} sys_mem=$(get_system_size) - + _ck_cmdline=$(kdump_get_arch_recommend_crashkernel) get_recommend_size "$sys_mem" "$ck_cmdline" } -- 2.31.1