521 lines
12 KiB
Bash
Executable File
521 lines
12 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Kdump common variables and functions
|
|
#
|
|
|
|
DEFAULT_PATH="/var/crash/"
|
|
FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
|
|
FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
|
|
FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled"
|
|
|
|
is_fadump_capable()
|
|
{
|
|
# Check if firmware-assisted dump is enabled
|
|
# if no, fallback to kdump check
|
|
if [ -f $FADUMP_ENABLED_SYS_NODE ]; then
|
|
rc=`cat $FADUMP_ENABLED_SYS_NODE`
|
|
[ $rc -eq 1 ] && return 0
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
perror_exit() {
|
|
echo $@ >&2
|
|
exit 1
|
|
}
|
|
|
|
perror() {
|
|
echo $@ >&2
|
|
}
|
|
|
|
is_ssh_dump_target()
|
|
{
|
|
grep -q "^ssh[[:blank:]].*@" /etc/kdump.conf
|
|
}
|
|
|
|
is_nfs_dump_target()
|
|
{
|
|
grep -q "^nfs" /etc/kdump.conf || \
|
|
[[ $(get_dracut_args_fstype "$(grep "^dracut_args .*\-\-mount" /etc/kdump.conf)") = nfs* ]]
|
|
}
|
|
|
|
is_raw_dump_target()
|
|
{
|
|
grep -q "^raw" /etc/kdump.conf
|
|
}
|
|
|
|
is_fs_type_nfs()
|
|
{
|
|
local _fstype=$1
|
|
[ $_fstype = "nfs" ] || [ $_fstype = "nfs4" ] && return 0
|
|
return 1
|
|
}
|
|
|
|
is_fs_dump_target()
|
|
{
|
|
egrep -q "^ext[234]|^xfs|^btrfs|^minix" /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 'type="fence_kdump"') &> /dev/null || return 1
|
|
}
|
|
|
|
# Check if fence_kdump is configured using kdump options
|
|
is_generic_fence_kdump()
|
|
{
|
|
[ -x $FENCE_KDUMP_SEND ] || return 1
|
|
|
|
grep -q "^fence_kdump_nodes" /etc/kdump.conf
|
|
}
|
|
|
|
to_dev_name() {
|
|
local dev="${1//\"/}"
|
|
|
|
case "$dev" in
|
|
UUID=*)
|
|
dev=`blkid -U "${dev#UUID=}"`
|
|
;;
|
|
LABEL=*)
|
|
dev=`blkid -L "${dev#LABEL=}"`
|
|
;;
|
|
esac
|
|
echo $dev
|
|
}
|
|
|
|
kdump_get_persistent_dev() {
|
|
local i _tmp _dev _lookup_dirs
|
|
|
|
_dev=$(udevadm info --query=name --name="$1" 2>/dev/null)
|
|
[ -z "$_dev" ] && {
|
|
perror_exit "Kernel dev name of $1 is not found."
|
|
}
|
|
|
|
if [[ $2 = "raw" ]];then
|
|
_lookup_dirs="/dev/mapper/* /dev/disk/by-id/* /dev/disk/by-path/*"
|
|
else
|
|
_lookup_dirs="/dev/mapper/* /dev/disk/by-uuid/* /dev/disk/by-id/*"
|
|
fi
|
|
|
|
for i in $_lookup_dirs; do
|
|
_tmp=$(udevadm info --query=name --name="$i" 2>/dev/null)
|
|
if [ "$_tmp" = "$_dev" ]; then
|
|
echo $i
|
|
return
|
|
fi
|
|
done
|
|
|
|
perror "WARNING: Persistent device name of $1 not found. Using $1 as dump target name"
|
|
echo $1
|
|
}
|
|
|
|
is_user_configured_dump_target()
|
|
{
|
|
return $(is_mount_in_dracut_args || is_ssh_dump_target || is_nfs_dump_target || \
|
|
is_raw_dump_target || is_fs_dump_target)
|
|
}
|
|
|
|
get_user_configured_dump_disk()
|
|
{
|
|
local _target
|
|
|
|
_target=$(egrep "^ext[234]|^xfs|^btrfs|^minix|^raw" /etc/kdump.conf 2>/dev/null |awk '{print $2}')
|
|
[ -n "$_target" ] && echo $_target && return
|
|
|
|
_target=$(get_dracut_args_target "$(grep "^dracut_args .*\-\-mount" /etc/kdump.conf)")
|
|
[ -b "$_target" ] && echo $_target
|
|
}
|
|
|
|
get_root_fs_device()
|
|
{
|
|
local _target
|
|
_target=$(findmnt -k -f -n -o SOURCE /)
|
|
[ -n "$_target" ] && echo $_target
|
|
|
|
return
|
|
}
|
|
|
|
get_save_path()
|
|
{
|
|
local _save_path=$(grep "^path" /etc/kdump.conf|awk '{print $2}')
|
|
if [ -z "$_save_path" ]; then
|
|
_save_path=$DEFAULT_PATH
|
|
fi
|
|
|
|
echo $_save_path
|
|
}
|
|
|
|
get_block_dump_target()
|
|
{
|
|
local _target _path
|
|
|
|
if is_ssh_dump_target || is_nfs_dump_target; then
|
|
return
|
|
fi
|
|
|
|
_target=$(get_user_configured_dump_disk)
|
|
[ -n "$_target" ] && echo $(to_dev_name $_target) && return
|
|
|
|
# Get block device name from local save path
|
|
_path=$(get_save_path)
|
|
_target=$(get_target_from_path $_path)
|
|
[ -b "$_target" ] && echo $(to_dev_name $_target)
|
|
}
|
|
|
|
is_dump_to_rootfs()
|
|
{
|
|
grep "^default[[:space:]]dump_to_rootfs" /etc/kdump.conf >/dev/null
|
|
}
|
|
|
|
get_default_action_target()
|
|
{
|
|
local _target
|
|
|
|
if is_dump_to_rootfs; then
|
|
# Get rootfs device name
|
|
_target=$(get_root_fs_device)
|
|
[ -b "$_target" ] && echo $(to_dev_name $_target) && return
|
|
# Then, must be nfs root
|
|
echo "nfs"
|
|
fi
|
|
}
|
|
|
|
# Get kdump targets(including root in case of dump_to_rootfs).
|
|
get_kdump_targets()
|
|
{
|
|
local _target _root
|
|
local kdump_targets
|
|
|
|
_target=$(get_block_dump_target)
|
|
if [ -n "$_target" ]; then
|
|
kdump_targets=$_target
|
|
elif is_ssh_dump_target; then
|
|
kdump_targets="ssh"
|
|
else
|
|
kdump_targets="nfs"
|
|
fi
|
|
|
|
# Add the root device if dump_to_rootfs is specified.
|
|
_root=$(get_default_action_target)
|
|
if [ -n "$_root" -a "$kdump_targets" != "$_root" ]; then
|
|
kdump_targets="$kdump_targets $_root"
|
|
fi
|
|
|
|
echo "$kdump_targets"
|
|
}
|
|
|
|
|
|
# findmnt uses the option "-v, --nofsroot" to exclusive the [/dir]
|
|
# in the SOURCE column for bind-mounts, then if $_mntpoint equals to
|
|
# $_mntpoint_nofsroot, the mountpoint is not bind mounted directory.
|
|
is_bind_mount()
|
|
{
|
|
local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
|
|
local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
|
|
|
|
if [[ $_mntpoint = $_mntpoint_nofsroot ]]; then
|
|
return 1
|
|
else
|
|
return 0
|
|
fi
|
|
}
|
|
|
|
# Below is just an example for mount info
|
|
# /dev/mapper/atomicos-root[/ostree/deploy/rhel-atomic-host/var], if the
|
|
# directory is bind mounted. The former part represents the device path, rest
|
|
# part is the bind mounted directory which quotes by bracket "[]".
|
|
get_bind_mount_directory()
|
|
{
|
|
local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
|
|
local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
|
|
|
|
_mntpoint=${_mntpoint#*$_mntpoint_nofsroot}
|
|
|
|
_mntpoint=${_mntpoint#[}
|
|
_mntpoint=${_mntpoint%]}
|
|
|
|
echo $_mntpoint
|
|
}
|
|
|
|
get_mntpoint_from_path()
|
|
{
|
|
echo $(df $1 | tail -1 | awk '{print $NF}')
|
|
}
|
|
|
|
get_target_from_path()
|
|
{
|
|
echo $(df $1 | tail -1 | awk '{print $1}')
|
|
}
|
|
|
|
get_fs_type_from_target()
|
|
{
|
|
echo $(findmnt -k -f -n -r -o FSTYPE $1)
|
|
}
|
|
|
|
# input: device path
|
|
# output: the general mount point
|
|
# find the general mount point, not the bind mounted point in atomic
|
|
# As general system, Use the previous code
|
|
#
|
|
# ERROR and EXIT:
|
|
# the device can be umounted the general mount point, if one of the mount point is bind mounted
|
|
# For example:
|
|
# mount /dev/sda /mnt/
|
|
# mount -o bind /mnt/var /var
|
|
# umount /mnt
|
|
get_mntpoint_from_target()
|
|
{
|
|
if is_atomic; then
|
|
for _mnt in $(findmnt -k -n -r -o TARGET $1)
|
|
do
|
|
if ! is_bind_mount $_mnt; then
|
|
echo $_mnt
|
|
return
|
|
fi
|
|
done
|
|
|
|
echo "Mount $1 firstly, without the bind mode" >&2
|
|
exit 1
|
|
else
|
|
echo $(findmnt -k -f -n -r -o TARGET $1)
|
|
fi
|
|
}
|
|
|
|
# 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-`)
|
|
}
|
|
|
|
#This function compose a absolute path with the mount
|
|
#point and the relative $SAVE_PATH.
|
|
#target is passed in as argument, could be UUID, LABEL,
|
|
#block device or even nfs server export of the form of
|
|
#"my.server.com:/tmp/export"?
|
|
#And possibly this could be used for both default case
|
|
#as well as when dump taret is specified. When dump
|
|
#target is not specified, then $target would be null.
|
|
make_absolute_save_path()
|
|
{
|
|
local _target=$1
|
|
local _mnt
|
|
|
|
[ -n $_target ] && _mnt=$(get_mntpoint_from_target $1)
|
|
_mnt="${_mnt}/$SAVE_PATH"
|
|
|
|
# strip the duplicated "/"
|
|
echo "$_mnt" | tr -s /
|
|
}
|
|
|
|
check_save_path_fs()
|
|
{
|
|
local _path=$1
|
|
|
|
if [ ! -d $_path ]; then
|
|
perror_exit "Dump path $_path does not exist."
|
|
fi
|
|
}
|
|
|
|
is_atomic()
|
|
{
|
|
grep -q "ostree" /proc/cmdline
|
|
}
|
|
|
|
is_ipv6_address()
|
|
{
|
|
echo $1 | grep -q ":"
|
|
}
|
|
|
|
# get ip address or hostname from nfs/ssh config value
|
|
get_remote_host()
|
|
{
|
|
local _config_val=$1
|
|
|
|
# ipv6 address in kdump.conf is around with "[]",
|
|
# factor out the ipv6 address
|
|
_config_val=${_config_val#*@}
|
|
_config_val=${_config_val%:/*}
|
|
_config_val=${_config_val#[}
|
|
_config_val=${_config_val%]}
|
|
echo $_config_val
|
|
}
|
|
|
|
is_hostname()
|
|
{
|
|
local _hostname=`echo $1 | grep ":"`
|
|
|
|
if [ -n "$_hostname" ]; then
|
|
return 1
|
|
fi
|
|
echo $1 | grep -q "[a-zA-Z]"
|
|
}
|
|
|
|
# Copied from "/etc/sysconfig/network-scripts/network-functions"
|
|
get_hwaddr()
|
|
{
|
|
if [ -f "/sys/class/net/${1}/address" ]; then
|
|
awk '{ print toupper($0) }' < /sys/class/net/${1}/address
|
|
elif [ -d "/sys/class/net/${1}" ]; then
|
|
LC_ALL= LANG= ip -o link show ${1} 2>/dev/null | \
|
|
awk '{ print toupper(gensub(/.*link\/[^ ]* ([[:alnum:]:]*).*/,
|
|
"\\1", 1)); }'
|
|
fi
|
|
}
|
|
|
|
get_ifcfg_by_device()
|
|
{
|
|
grep -E -i -l "^[[:space:]]*DEVICE=\"*${1}\"*[[:space:]]*$" \
|
|
/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
|
|
}
|
|
|
|
get_ifcfg_by_hwaddr()
|
|
{
|
|
grep -E -i -l "^[[:space:]]*HWADDR=\"*${1}\"*[[:space:]]*$" \
|
|
/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
|
|
}
|
|
|
|
get_ifcfg_by_uuid()
|
|
{
|
|
grep -E -i -l "^[[:space:]]*UUID=\"*${1}\"*[[:space:]]*$" \
|
|
/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
|
|
}
|
|
|
|
get_ifcfg_by_name()
|
|
{
|
|
grep -E -i -l "^[[:space:]]*NAME=\"*${1}\"*[[:space:]]*$" \
|
|
/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
|
|
}
|
|
|
|
is_nm_running()
|
|
{
|
|
[ "$(LANG=C nmcli -t --fields running general status 2>/dev/null)" = "running" ]
|
|
}
|
|
|
|
is_nm_handling()
|
|
{
|
|
LANG=C nmcli -t --fields device,state dev status 2>/dev/null \
|
|
| grep -q "^\(${1}:connected\)\|\(${1}:connecting.*\)$"
|
|
}
|
|
|
|
# $1: netdev name
|
|
get_ifcfg_nmcli()
|
|
{
|
|
local nm_uuid nm_name
|
|
local ifcfg_file
|
|
|
|
# Get the active nmcli config name of $1
|
|
if is_nm_running && is_nm_handling "${1}" ; then
|
|
# The configuration "uuid" and "name" generated by nm is wrote to
|
|
# the ifcfg file as "UUID=<nm_uuid>" and "NAME=<nm_name>".
|
|
nm_uuid=$(LANG=C nmcli -t --fields uuid,device c show --active 2>/dev/null \
|
|
| grep "${1}" | head -1 | cut -d':' -f1)
|
|
nm_name=$(LANG=C nmcli -t --fields name,device c show --active 2>/dev/null \
|
|
| grep "${1}" | head -1 | cut -d':' -f1)
|
|
ifcfg_file=$(get_ifcfg_by_uuid "${nm_uuid}")
|
|
[ -z "${ifcfg_file}" ] && ifcfg_file=$(get_ifcfg_by_name "${nm_name}")
|
|
fi
|
|
|
|
echo -n "${ifcfg_file}"
|
|
}
|
|
|
|
# $1: netdev name
|
|
get_ifcfg_legacy()
|
|
{
|
|
local ifcfg_file
|
|
|
|
ifcfg_file="/etc/sysconfig/network-scripts/ifcfg-${1}"
|
|
[ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
|
|
|
|
ifcfg_file=$(get_ifcfg_by_name "${1}")
|
|
[ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
|
|
|
|
local hwaddr=$(get_hwaddr "${1}")
|
|
if [ -n "$hwaddr" ]; then
|
|
ifcfg_file=$(get_ifcfg_by_hwaddr "${hwaddr}")
|
|
[ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
|
|
fi
|
|
|
|
ifcfg_file=$(get_ifcfg_by_device "${1}")
|
|
|
|
echo -n "${ifcfg_file}"
|
|
}
|
|
|
|
# $1: netdev name
|
|
# Return the ifcfg file whole name(including the path) of $1 if any.
|
|
get_ifcfg_filename() {
|
|
local ifcfg_file
|
|
|
|
ifcfg_file=$(get_ifcfg_nmcli "${1}")
|
|
if [ -z "${ifcfg_file}" ]; then
|
|
ifcfg_file=$(get_ifcfg_legacy "${1}")
|
|
fi
|
|
|
|
echo -n "${ifcfg_file}"
|
|
}
|
|
|
|
# returns 0 when omission of watchdog module is desired in dracut_args
|
|
# returns 1 otherwise
|
|
is_wdt_mod_omitted() {
|
|
local dracut_args
|
|
local ret=1
|
|
|
|
dracut_args=$(grep "^dracut_args" /etc/kdump.conf)
|
|
[[ -z $dracut_args ]] && return $ret
|
|
|
|
eval set -- $dracut_args
|
|
while :; do
|
|
[[ -z $1 ]] && break
|
|
case $1 in
|
|
-o|--omit)
|
|
echo $2 | grep -qw "watchdog"
|
|
[[ $? == 0 ]] && ret=0
|
|
break
|
|
esac
|
|
shift
|
|
done
|
|
|
|
return $ret
|
|
}
|
|
|
|
# If "dracut_args" contains "--mount" information, use it
|
|
# directly without any check(users are expected to ensure
|
|
# its correctness).
|
|
is_mount_in_dracut_args()
|
|
{
|
|
grep -q "^dracut_args .*\-\-mount" /etc/kdump.conf
|
|
}
|
|
|
|
# If $1 contains dracut_args "--mount", return <filesystem type>
|
|
get_dracut_args_fstype()
|
|
{
|
|
echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f3
|
|
}
|
|
|
|
# If $1 contains dracut_args "--mount", return <device>
|
|
get_dracut_args_target()
|
|
{
|
|
echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f1
|
|
}
|
|
|
|
# Get currently loaded modules
|
|
# sorted, and delimited by newline
|
|
get_loaded_kernel_modules()
|
|
{
|
|
local modules=( )
|
|
while read _module _size _used _used_by; do
|
|
modules+=( "$_module" )
|
|
done <<< "$(lsmod | sed -n '1!p')"
|
|
printf '%s\n' "${modules[@]}" | sort
|
|
}
|