3095c3741f
If dracut watchdog module is enabled then, it includes kernel watchdog module of active watchdog device in initramfs. kdump.conf has an option to modify dracut_args. So, if an user passes "-a watchdog" in dracut_args then dracut will add kernel watchdog module of active watchdog device in initramfs. Since, kexec-tools always requires to add kernel watchdog module of active watchdog device in initramfs, therefore even when an user does not pass any watchdog option and there exists at least one active watchdog device then also kexec-tools adds "-a watchdog" in dracut args. Therefore, if an user does not want to add kernel watchdog module in initramfs then the person must pass "-o watchdog" in dracut_args. Signed-off-by: Pratyush Anand <panand@redhat.com> Acked-by: Dave Young <dyoung@redhat.com>
409 lines
9.4 KiB
Bash
Executable File
409 lines
9.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# Kdump common variables and functions
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#
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DEFAULT_PATH="/var/crash/"
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FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
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FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
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perror_exit() {
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echo $@ >&2
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exit 1
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}
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perror() {
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echo $@ >&2
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}
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is_ssh_dump_target()
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{
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grep -q "^ssh[[:blank:]].*@" /etc/kdump.conf
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}
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is_nfs_dump_target()
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{
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grep -q "^nfs" /etc/kdump.conf
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}
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is_raw_dump_target()
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{
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grep -q "^raw" /etc/kdump.conf
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}
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is_fs_type_nfs()
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{
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local _fstype=$1
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[ $_fstype = "nfs" ] || [ $_fstype = "nfs4" ] && return 0
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return 1
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}
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is_fs_dump_target()
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{
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egrep -q "^ext[234]|^xfs|^btrfs|^minix" /etc/kdump.conf
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}
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is_user_configured_dump_target()
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{
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return $(is_ssh_dump_target || is_nfs_dump_target || is_raw_dump_target || is_fs_dump_target)
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}
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strip_comments()
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{
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echo $@ | sed -e 's/\(.*\)#.*/\1/'
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}
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# Check if fence kdump is configured in Pacemaker cluster
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is_pcs_fence_kdump()
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{
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# no pcs or fence_kdump_send executables installed?
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type -P pcs > /dev/null || return 1
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[ -x $FENCE_KDUMP_SEND ] || return 1
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# fence kdump not configured?
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(pcs cluster cib | grep -q 'type="fence_kdump"') &> /dev/null || return 1
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}
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# Check if fence_kdump is configured using kdump options
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is_generic_fence_kdump()
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{
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[ -x $FENCE_KDUMP_SEND ] || return 1
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grep -q "^fence_kdump_nodes" /etc/kdump.conf
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}
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to_dev_name() {
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local dev="${1//\"/}"
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case "$dev" in
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UUID=*)
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dev=`blkid -U "${dev#UUID=}"`
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;;
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LABEL=*)
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dev=`blkid -L "${dev#LABEL=}"`
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;;
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esac
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echo $dev
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}
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kdump_get_persistent_dev() {
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local i _tmp _dev _lookup_dirs
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_dev=$(udevadm info --query=name --name="$1" 2>/dev/null)
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[ -z "$_dev" ] && {
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perror_exit "Kernel dev name of $1 is not found."
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}
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if [[ $2 = "raw" ]];then
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_lookup_dirs="/dev/mapper/* /dev/disk/by-id/*"
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else
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_lookup_dirs="/dev/mapper/* /dev/disk/by-uuid/* /dev/disk/by-id/*"
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fi
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for i in $_lookup_dirs; do
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_tmp=$(udevadm info --query=name --name="$i" 2>/dev/null)
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if [ "$_tmp" = "$_dev" ]; then
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echo $i
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return
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fi
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done
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perror "WARNING: Persistent device name of $1 not found. Using $1 as dump target name"
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echo $1
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}
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get_user_configured_dump_disk()
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{
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local _target
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if is_ssh_dump_target || is_nfs_dump_target; then
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return
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fi
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_target=$(egrep "^ext[234]|^xfs|^btrfs|^minix|^raw" /etc/kdump.conf 2>/dev/null |awk '{print $2}')
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[ -n "$_target" ] && echo $_target
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return
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}
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get_root_fs_device()
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{
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local _target
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_target=$(findmnt -k -f -n -o SOURCE /)
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[ -n "$_target" ] && echo $_target
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return
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}
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# findmnt uses the option "-v, --nofsroot" to exclusive the [/dir]
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# in the SOURCE column for bind-mounts, then if $_mntpoint equals to
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# $_mntpoint_nofsroot, the mountpoint is not bind mounted directory.
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is_bind_mount()
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{
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local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
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local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
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if [[ $_mntpoint = $_mntpoint_nofsroot ]]; then
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return 1
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else
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return 0
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fi
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}
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# Below is just an example for mount info
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# /dev/mapper/atomicos-root[/ostree/deploy/rhel-atomic-host/var], if the
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# directory is bind mounted. The former part represents the device path, rest
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# part is the bind mounted directory which quotes by bracket "[]".
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get_bind_mount_directory()
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{
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local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
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local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
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_mntpoint=${_mntpoint#*$_mntpoint_nofsroot}
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_mntpoint=${_mntpoint#[}
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_mntpoint=${_mntpoint%]}
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echo $_mntpoint
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}
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get_mntpoint_from_path()
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{
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echo $(df $1 | tail -1 | awk '{print $NF}')
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}
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get_target_from_path()
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{
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echo $(df $1 | tail -1 | awk '{print $1}')
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}
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get_fs_type_from_target()
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{
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echo $(findmnt -k -f -n -r -o FSTYPE $1)
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}
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# input: device path
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# output: the general mount point
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# find the general mount point, not the bind mounted point in atomic
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# As general system, Use the previous code
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#
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# ERROR and EXIT:
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# the device can be umounted the general mount point, if one of the mount point is bind mounted
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# For example:
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# mount /dev/sda /mnt/
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# mount -o bind /mnt/var /var
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# umount /mnt
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get_mntpoint_from_target()
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{
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if is_atomic; then
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for _mnt in $(findmnt -k -n -r -o TARGET $1)
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do
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if ! is_bind_mount $_mnt; then
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echo $_mnt
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return
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fi
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done
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echo "Mount $1 firstly, without the bind mode" >&2
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exit 1
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else
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echo $(findmnt -k -f -n -r -o TARGET $1)
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fi
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}
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# get_option_value <option_name>
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# retrieves value of option defined in kdump.conf
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get_option_value() {
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echo $(strip_comments `grep "^$1[[:space:]]\+" /etc/kdump.conf | tail -1 | cut -d\ -f2-`)
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}
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#This function compose a absolute path with the mount
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#point and the relative $SAVE_PATH.
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#target is passed in as argument, could be UUID, LABEL,
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#block device or even nfs server export of the form of
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#"my.server.com:/tmp/export"?
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#And possibly this could be used for both default case
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#as well as when dump taret is specified. When dump
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#target is not specified, then $target would be null.
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make_absolute_save_path()
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{
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local _target=$1
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local _mnt
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[ -n $_target ] && _mnt=$(get_mntpoint_from_target $1)
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_mnt="${_mnt}/$SAVE_PATH"
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# strip the duplicated "/"
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echo "$_mnt" | tr -s /
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}
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check_save_path_fs()
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{
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local _path=$1
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if [ ! -d $_path ]; then
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perror_exit "Dump path $_path does not exist."
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fi
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}
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is_atomic()
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{
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grep -q "ostree" /proc/cmdline
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}
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is_ipv6_address()
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{
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echo $1 | grep -q ":"
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}
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# get ip address or hostname from nfs/ssh config value
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get_remote_host()
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{
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local _config_val=$1
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# ipv6 address in kdump.conf is around with "[]",
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# factor out the ipv6 address
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_config_val=${_config_val#*@}
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_config_val=${_config_val%:/*}
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_config_val=${_config_val#[}
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_config_val=${_config_val%]}
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echo $_config_val
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}
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is_hostname()
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{
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local _hostname=`echo $1 | grep ":"`
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if [ -n "$_hostname" ]; then
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return 1
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fi
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echo $1 | grep -q "[a-zA-Z]"
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}
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# Copied from "/etc/sysconfig/network-scripts/network-functions"
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get_hwaddr()
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{
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if [ -f "/sys/class/net/${1}/address" ]; then
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awk '{ print toupper($0) }' < /sys/class/net/${1}/address
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elif [ -d "/sys/class/net/${1}" ]; then
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LC_ALL= LANG= ip -o link show ${1} 2>/dev/null | \
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awk '{ print toupper(gensub(/.*link\/[^ ]* ([[:alnum:]:]*).*/,
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"\\1", 1)); }'
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fi
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}
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get_ifcfg_by_device()
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{
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grep -E -i -l "^[[:space:]]*DEVICE=\"*${1}\"*[[:space:]]*$" \
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/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
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}
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get_ifcfg_by_hwaddr()
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{
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grep -E -i -l "^[[:space:]]*HWADDR=\"*${1}\"*[[:space:]]*$" \
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/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
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}
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get_ifcfg_by_uuid()
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{
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grep -E -i -l "^[[:space:]]*UUID=\"*${1}\"*[[:space:]]*$" \
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/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
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}
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get_ifcfg_by_name()
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{
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grep -E -i -l "^[[:space:]]*NAME=\"*${1}\"*[[:space:]]*$" \
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/etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
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}
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is_nm_running()
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{
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[ "$(LANG=C nmcli -t --fields running general status 2>/dev/null)" = "running" ]
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}
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is_nm_handling()
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{
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LANG=C nmcli -t --fields device,state dev status 2>/dev/null \
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| grep -q "^\(${1}:connected\)\|\(${1}:connecting.*\)$"
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}
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# $1: netdev name
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get_ifcfg_nmcli()
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{
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local nm_uuid nm_name
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local ifcfg_file
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# Get the active nmcli config name of $1
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if is_nm_running && is_nm_handling "${1}" ; then
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# The configuration "uuid" and "name" generated by nm is wrote to
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# the ifcfg file as "UUID=<nm_uuid>" and "NAME=<nm_name>".
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nm_uuid=$(LANG=C nmcli -t --fields uuid,device c show --active 2>/dev/null \
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| grep "${1}" | head -1 | cut -d':' -f1)
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nm_name=$(LANG=C nmcli -t --fields name,device c show --active 2>/dev/null \
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| grep "${1}" | head -1 | cut -d':' -f1)
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ifcfg_file=$(get_ifcfg_by_uuid "${nm_uuid}")
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[ -z "${ifcfg_file}" ] && ifcfg_file=$(get_ifcfg_by_name "${nm_name}")
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fi
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echo -n "${ifcfg_file}"
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}
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# $1: netdev name
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get_ifcfg_legacy()
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{
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local ifcfg_file
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ifcfg_file="/etc/sysconfig/network-scripts/ifcfg-${1}"
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[ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
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ifcfg_file=$(get_ifcfg_by_name "${1}")
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[ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
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local hwaddr=$(get_hwaddr "${1}")
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if [ -n "$hwaddr" ]; then
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ifcfg_file=$(get_ifcfg_by_hwaddr "${hwaddr}")
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[ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
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fi
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ifcfg_file=$(get_ifcfg_by_device "${1}")
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echo -n "${ifcfg_file}"
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}
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# $1: netdev name
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# Return the ifcfg file whole name(including the path) of $1 if any.
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get_ifcfg_filename() {
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local ifcfg_file
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ifcfg_file=$(get_ifcfg_nmcli "${1}")
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if [ -z "${ifcfg_file}" ]; then
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ifcfg_file=$(get_ifcfg_legacy "${1}")
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fi
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echo -n "${ifcfg_file}"
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}
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# returns 0 when omission of watchdog module is desired in dracut_args
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# returns 1 otherwise
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is_wdt_mod_omitted() {
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local dracut_args
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local ret=1
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dracut_args=$(grep "^dracut_args" /etc/kdump.conf)
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[[ -z $dracut_args ]] && return $ret
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eval set -- $dracut_args
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while :; do
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[[ -z $1 ]] && break
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case $1 in
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-o|--omit)
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echo $2 | grep -qw "watchdog"
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[[ $? == 0 ]] && ret=0
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break
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esac
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shift
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done
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return $ret
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}
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