kexec-tools/kdump-lib.sh

#!/bin/sh
#
# Kdump common variables and functions
#

FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
FENCE_KDUMP_NODES_FILE="/etc/fence_kdump_nodes"

is_ssh_dump_target()
{
    grep -q "^ssh[[:blank:]].*@" /etc/kdump.conf
}

is_nfs_dump_target()
{
    grep -q "^nfs" /etc/kdump.conf
}

is_raw_dump_target()
{
    grep -q "^raw" /etc/kdump.conf
}

strip_comments()
{
    echo $@ | sed -e 's/\(.*\)#.*/\1/'
}

# Check if fence kdump is configured in Pacemaker cluster
is_pcs_fence_kdump()
{
    # no pcs or fence_kdump_send executables installed?
    type -P pcs > /dev/null || return 1
    [ -x $FENCE_KDUMP_SEND ] || return 1

    # fence kdump not configured?
    (pcs cluster cib | grep -q 'type="fence_kdump"') &> /dev/null || return 1
}

get_user_configured_dump_disk()
{
    local _target

    if is_ssh_dump_target || is_nfs_dump_target; then
        return
    fi

    _target=$(egrep "^ext[234]|^xfs|^btrfs|^minix|^raw" /etc/kdump.conf 2>/dev/null |awk '{print $2}')
    [ -n "$_target" ] && echo $_target

    return
}

is_user_configured_dump_target()
{
    local _target

    if is_ssh_dump_target || is_nfs_dump_target; then
        return 0
    fi

    _target=$(egrep "^ext[234]|^xfs|^btrfs|^minix|^raw" /etc/kdump.conf 2>/dev/null |awk '{print $2}')
    [ -n "$_target" ] && return 0

    return 1
}

get_root_fs_device()
{
    local _target
    _target=$(findmnt -k -f -n -o SOURCE /)
    [ -n "$_target" ] && echo $_target

    return
}

# get_option_value <option_name>
# retrieves value of option defined in kdump.conf
get_option_value() {
    echo $(strip_comments `grep ^$1 /etc/kdump.conf | tail -1 | cut -d\  -f2-`)
}