SOURCES/dracut-module-setup.sh

@@ -1,5 +1,20 @@
 #!/bin/bash
 
+_save_kdump_netifs() {
+    local _name
+
+    if [[ -n $2 ]]; then
+        _name=$2
+    else
+        _name=$1
+    fi
+    unique_netifs[$1]=$_name
+}
+
+_get_kdump_netifs() {
+    echo -n "${!unique_netifs[@]}"
+}
+
 kdump_module_init() {
     if ! [[ -d "${initdir}/tmp" ]]; then
         mkdir -p "${initdir}/tmp"
@@ -42,6 +57,14 @@ depends() {
         _dep="$_dep ssh-client"
     fi
 
+    if is_lvm2_thinp_dump_target; then
+        if grep -q lvmthinpool-monitor <<< $(dracut --list-modules); then
+            add_opt_module lvmthinpool-monitor
+        else
+            dwarning "Required lvmthinpool-monitor modules is missing! Please upgrade dracut >= 057."
+        fi
+    fi
+
     if [ "$(uname -m)" = "s390x" ]; then
         _dep="$_dep znet"
     fi
@@ -300,11 +323,35 @@ kdump_setup_ifname() {
     echo "$_ifname"
 }
 
+kdump_install_nm_netif_allowlist() {
+    local _netif _except_netif _netif_allowlist _netif_allowlist_nm_conf
+
+    for _netif in $1; do
+        _per_mac=$(kdump_get_perm_addr "$_netif")
+        if [[ "$_per_mac" != 'not set' ]]; then
+            _except_netif="mac:$_per_mac"
+        else
+            _except_netif="interface-name:${unique_netifs[${_netif}]}"
+        fi
+        _netif_allowlist="${_netif_allowlist}except:${_except_netif};"
+    done
+
+    _netif_allowlist_nm_conf=${initdir}/tmp/netif_allowlist_nm_conf
+    cat << EOF > "$_netif_allowlist_nm_conf"
+[device-others]
+match-device=${_netif_allowlist}
+managed=false
+EOF
+
+    inst "$_netif_allowlist_nm_conf" "/etc/NetworkManager/conf.d/10-kdump-netif_allowlist.conf"
+    rm -f "$_netif_allowlist_nm_conf"
+}
+
 kdump_setup_bridge() {
     local _netdev=$1
     local _brif _dev _mac _kdumpdev
     for _dev in `ls /sys/class/net/$_netdev/brif/`; do
-        _kdumpdev=$_dev
+        _kdumpdev=""
         if kdump_is_bond "$_dev"; then
             kdump_setup_bond "$_dev"
         elif kdump_is_team "$_dev"; then
@@ -316,6 +363,8 @@ kdump_setup_bridge() {
             _kdumpdev=$(kdump_setup_ifname $_dev)
             echo -n " ifname=$_kdumpdev:$_mac" >> ${initdir}/etc/cmdline.d/41bridge.conf
         fi
+        _save_kdump_netifs "$_dev" "$_kdumpdev"
+        [[ -z $_kdumpdev ]] && _kdumpdev=$_dev
         _brif+="$_kdumpdev,"
     done
     echo " bridge=$_netdev:$(echo $_brif | sed -e 's/,$//')" >> ${initdir}/etc/cmdline.d/41bridge.conf
@@ -327,6 +376,7 @@ kdump_setup_bond() {
     for _dev in `cat /sys/class/net/$_netdev/bonding/slaves`; do
         _mac=$(kdump_get_perm_addr $_dev)
         _kdumpdev=$(kdump_setup_ifname $_dev)
+        _save_kdump_netifs "$_dev" "$_kdumpdev"
         echo -n " ifname=$_kdumpdev:$_mac" >> ${initdir}/etc/cmdline.d/42bond.conf
         _slaves+="$_kdumpdev,"
     done
@@ -345,6 +395,7 @@ kdump_setup_team() {
     for _dev in `teamnl $_netdev ports | awk -F':' '{print $2}'`; do
         _mac=$(kdump_get_perm_addr $_dev)
         _kdumpdev=$(kdump_setup_ifname $_dev)
+        _save_kdump_netifs "$_dev" "$_kdumpdev"
         echo -n " ifname=$_kdumpdev:$_mac" >> ${initdir}/etc/cmdline.d/44team.conf
         _slaves+="$_kdumpdev,"
     done
@@ -379,6 +430,7 @@ kdump_setup_vlan() {
         _kdumpdev="$(kdump_setup_ifname $_phydev)"
 	echo " vlan=$(kdump_setup_ifname $_netdev):$_kdumpdev ifname=$_kdumpdev:$_netmac" > ${initdir}/etc/cmdline.d/43vlan.conf
     fi
+    _save_kdump_netifs "$_phydev" "$_kdumpdev"
 }
 
 # find online znet device
@@ -420,10 +472,13 @@ kdump_setup_znet() {
 
     source_ifcfg_file $_netdev
 
+    [[ -z "$NETTYPE" ]] && return
+    [[ -z "$SUBCHANNELS" ]] && return
+
     for i in $OPTIONS; do
         _options=${_options},$i
     done
-    echo rd.znet=${NETTYPE},${SUBCHANNELS}${_options} rd.znet_ifname=$_netdev:${SUBCHANNELS} > ${initdir}/etc/cmdline.d/30znet.conf
+    echo rd.znet=${NETTYPE},${SUBCHANNELS}${_options} rd.znet_ifname=$(kdump_setup_ifname $_netdev):${SUBCHANNELS} > ${initdir}/etc/cmdline.d/30znet.conf
 }
 
 # Setup dracut to bringup a given network interface
@@ -477,6 +532,7 @@ kdump_setup_netdev() {
         _ifname_opts=" ifname=$kdumpnic:$_netmac"
         echo "$_ifname_opts" >> $_ip_conf
     fi
+    _save_kdump_netifs "$_netdev" "$_kdumpdev"
 
     kdump_setup_dns "$_netdev"
 
@@ -765,7 +821,7 @@ kdump_check_iscsi_targets () {
     # If our prerequisites are not met, fail anyways.
     type -P iscsistart >/dev/null || return 1
 
-    kdump_check_setup_iscsi() (
+    kdump_check_setup_iscsi() {
         local _dev
         _dev=$1
 
@@ -775,7 +831,7 @@ kdump_check_iscsi_targets () {
             cd ..
         done
         [[ -d iscsi_session ]] && kdump_setup_iscsi_device "$PWD"
-    )
+    }
 
     [[ $hostonly ]] || [[ $mount_needs ]] && {
         for_each_host_dev_and_slaves_all kdump_check_setup_iscsi
@@ -941,7 +997,8 @@ kdump_install_systemd_conf() {
 }
 
 install() {
-    local arch
+    declare -A unique_netifs
+    local arch _netifs
 
     kdump_module_init
     kdump_install_conf
@@ -993,6 +1050,11 @@ install() {
     # at some point of time.
     kdump_check_iscsi_targets
 
+    _netifs=$(_get_kdump_netifs)
+    if [[ -n "$_netifs" ]]; then
+        kdump_install_nm_netif_allowlist "$_netifs"
+    fi
+
     kdump_install_systemd_conf
 
     # For the lvm type target under kdump, in /etc/lvm/lvm.conf we can

SOURCES/gen-kdump-conf.sh

@@ -1,3 +1,12 @@
+#!/bin/bash
+# $1: target arch
+
+
+SED_EXP=""
+
+generate()
+{
+	sed "$SED_EXP" << EOF
 # This file contains a series of commands to perform (in order) in the kdump
 # kernel after a kernel crash in the crash kernel(1st kernel) has happened.
 #
@@ -183,3 +192,32 @@ core_collector makedumpfile -l --message-level 7 -d 31
 #dracut_args --omit-drivers "cfg80211 snd" --add-drivers "ext2 ext3"
 #fence_kdump_args -p 7410 -f auto -c 0 -i 10
 #fence_kdump_nodes node1 node2
+EOF
+}
+
+update_param()
+{
+	SED_EXP="${SED_EXP}s/^$1.*$/$1 $2/;"
+}
+
+case "$1" in
+aarch64)
+	;;
+i386)
+	;;
+ppc64)
+	;;
+ppc64le)
+	;;
+s390x)
+	update_param core_collector \
+		"makedumpfile -c --message-level 7 -d 31"
+	;;
+x86_64)
+	;;
+*)
+	echo "Warning: Unknown architecture '$1', using default kdump.conf template."
+	;;
+esac
+
+generate

SOURCES/kdump-lib-initramfs.sh

@@ -145,9 +145,15 @@ dump_fs()
     $CORE_COLLECTOR /proc/vmcore $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete
     _exitcode=$?
     if [ $_exitcode -eq 0 ]; then
-        mv $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore
-        sync
-        dinfo "saving vmcore complete"
+        sync -f "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete"
+        _sync_exitcode=$?
+        if [ $_sync_exitcode -eq 0 ]; then
+            mv "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete" "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore"
+            dinfo "saving vmcore complete"
+        else
+            derror "sync vmcore failed, _exitcode:$_sync_exitcode"
+            return 1
+        fi
     else
         derror "saving vmcore failed, _exitcode:$_exitcode"
     fi

SOURCES/kdump-lib.sh

@@ -7,6 +7,7 @@ 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"
+LVM_CONF="/etc/lvm/lvm.conf"
 
 is_fadump_capable()
 {
@@ -62,6 +63,15 @@ is_fs_dump_target()
     egrep -q "^ext[234]|^xfs|^btrfs|^minix" /etc/kdump.conf
 }
 
+is_lvm2_thinp_device()
+{
+    _device_path=$1
+    _lvm2_thin_device=$(lvm lvs -S 'lv_layout=sparse && lv_layout=thin' \
+        --nosuffix --noheadings -o vg_name,lv_name "$_device_path" 2> /dev/null)
+
+    [ -n "$_lvm2_thin_device" ]
+}
+
 strip_comments()
 {
     echo $@ | sed -e 's/\(.*\)#.*/\1/'
@@ -161,6 +171,12 @@ is_dump_to_rootfs()
     grep -E "^(failure_action|default)[[:space:]]dump_to_rootfs" /etc/kdump.conf >/dev/null
 }
 
+is_lvm2_thinp_dump_target()
+{
+    _target=$(get_block_dump_target)
+    [ -n "$_target" ] && is_lvm2_thinp_device "$_target"
+}
+
 get_failure_action_target()
 {
     local _target

SOURCES/kdumpctl

@@ -398,6 +398,7 @@ check_files_modified()
 
 	# HOOKS is mandatory and need to check the modification time
 	files="$files $HOOKS"
+	is_lvm2_thinp_dump_target && files="$files $LVM_CONF"
 	check_exist "$files" && check_executable "$EXTRA_BINS"
 	[ $? -ne 0 ] && return 2
 
@@ -486,8 +487,9 @@ check_fs_modified()
 	fi
 
 	# No need to check in case of raw target.
-	# Currently we do not check also if ssh/nfs target is specified
-	if is_ssh_dump_target || is_nfs_dump_target || is_raw_dump_target; then
+	# Currently we do not check also if ssh/nfs/thinp target is specified
+	if is_ssh_dump_target || is_nfs_dump_target || is_raw_dump_target ||
+	   is_lvm2_thinp_dump_target; then
 		return 0
 	fi
 

SPECS/kexec-tools.spec

@@ -1,6 +1,6 @@
 Name: kexec-tools
 Version: 2.0.25
-Release: 2%{?dist}
+Release: 5%{?dist}
 License: GPLv2
 Group: Applications/System
 Summary: The kexec/kdump userspace component
@@ -12,7 +12,7 @@ Source3: kdump.sysconfig.x86_64
 Source4: kdump.sysconfig.i386
 Source5: kdump.sysconfig.ppc64
 Source7: mkdumprd
-Source8: kdump.conf
+Source8: gen-kdump-conf.sh
 Source9: https://github.com/makedumpfile/makedumpfile/archive/1.7.1.tar.gz
 Source10: kexec-kdump-howto.txt
 Source12: mkdumprd.8
@@ -158,6 +158,9 @@ cp %{SOURCE27} .
 cp %{SOURCE28} .
 cp %{SOURCE31} .
 
+# Generate sysconfig file
+%{SOURCE8} %{_target_cpu} > kdump.conf
+
 make
 %ifarch %{ix86} x86_64 ppc64 s390x ppc64le aarch64
 make -C eppic/libeppic
@@ -196,7 +199,7 @@ install -m 644 $SYSCONFIG $RPM_BUILD_ROOT%{_sysconfdir}/sysconfig/kdump
 
 install -m 755 %{SOURCE7} $RPM_BUILD_ROOT/usr/sbin/mkdumprd
 install -m 755 %{SOURCE36} $RPM_BUILD_ROOT/usr/sbin/mkfadumprd
-install -m 644 %{SOURCE8} $RPM_BUILD_ROOT%{_sysconfdir}/kdump.conf
+install -m 644 kdump.conf $RPM_BUILD_ROOT%{_sysconfdir}/kdump.conf
 install -m 644 kexec/kexec.8 $RPM_BUILD_ROOT%{_mandir}/man8/kexec.8
 install -m 644 %{SOURCE12} $RPM_BUILD_ROOT%{_mandir}/man8/mkdumprd.8
 install -m 644 %{SOURCE25} $RPM_BUILD_ROOT%{_mandir}/man8/kdumpctl.8
@@ -393,6 +396,21 @@ done
 %endif
 
 %changelog
+* Wed Jan 18 2023 Pingfan Liu <piliu@redhat.com> - 2.0.25-5
+ dracut-module-setup: Fix invalid rd.znet command line entry
+ dracut-module-setup: Fix persistent nic name on s390
+
+* Mon Jan  9 2023 Pingfan Liu <piliu@redhat.com> - 2.0.25-4
+- Don't check fs modified when dump target is lvm2 thinp
+- Add dependency of dracut lvmthinpool-monitor module
+- lvm.conf should be check modified if lvm2 thinp enabled
+- Add lvm2 thin provision dump target checker
+- Fix the sync issue for dump_fs
+
+* Fri Dec  2 2022 Pingfan Liu <piliu@redhat.com> - 2.0.25-3
+- kdump.conf: use a simple generator script to maintain
+- Reduce kdump memory consumption by not letting NetworkManager manage unneeded network interfaces
+
 * Mon Oct 17 2022 Pingfan Liu <piliu@redhat.com> - 2.0.25-2
 - mkdumprd: Improve error messages on non-existing NFS target directories
 - fadump: avoid non-debug kernel use for fadump case