SM0 She11

Path: / / usr / sbin

Full Path (server): /usr/sbin

📄 accessdb [E] [D]
📄 addgnupghome [E] [D]
📄 addpart [E] [D]
📄 adduser [E] [D]
📄 agetty [E] [D]
📄 alternatives [E] [D]
📄 amavisd [E] [D]
📄 anacron [E] [D]
📄 applygnupgdefaults [E] [D]
📄 arp [E] [D]
📄 arpd [E] [D]
📄 arping [E] [D]
📄 atd [E] [D]
📄 atrun [E] [D]
📄 audispd [E] [D]
📄 auditctl [E] [D]
📄 auditd [E] [D]
📄 augenrules [E] [D]
📄 aureport [E] [D]
📄 ausearch [E] [D]
📄 authconfig [E] [D]
📄 authconfig-tui [E] [D]
📄 autrace [E] [D]
📄 avcstat [E] [D]
📄 badblocks [E] [D]
📄 biosdecode [E] [D]
📄 blkdeactivate [E] [D]
📄 blkdiscard [E] [D]
📄 blkid [E] [D]
📄 blockdev [E] [D]
📄 bridge [E] [D]
📄 btrfs [E] [D]
📄 btrfs-convert [E] [D]
📄 btrfs-debug-tree [E] [D]
📄 btrfs-find-root [E] [D]
📄 btrfs-image [E] [D]
📄 btrfs-map-logical [E] [D]
📄 btrfs-select-super [E] [D]
📄 btrfs-zero-log [E] [D]
📄 btrfsck [E] [D]
📄 btrfstune [E] [D]
📄 build-locale-archive [E] [D]
📄 cacertdir_rehash [E] [D]
📄 capsh [E] [D]
📄 cbq [E] [D]
📄 cfdisk [E] [D]
📄 chcpu [E] [D]
📄 chgpasswd [E] [D]
📄 chkconfig [E] [D]
📄 chpasswd [E] [D]
📄 chronyd [E] [D]
📄 chroot [E] [D]
📄 clamd [E] [D]
📄 clamonacc [E] [D]
📄 clock [E] [D]
📄 clockdiff [E] [D]
📄 consoletype [E] [D]
📄 convertquota [E] [D]
📄 cracklib-check [E] [D]
📄 cracklib-format [E] [D]
📄 cracklib-packer [E] [D]
📄 cracklib-unpacker [E] [D]
📄 create-cracklib-dict [E] [D]
📄 crond [E] [D]
📄 csf [E] [D]
📄 ctrlaltdel [E] [D]
📄 ctstat [E] [D]
📄 ddns-confgen [E] [D]
📄 debugfs [E] [D]
📄 delpart [E] [D]
📄 depmod [E] [D]
📄 devlink [E] [D]
📄 dhclient [E] [D]
📄 dhclient-script [E] [D]
📄 dmfilemapd [E] [D]
📄 dmidecode [E] [D]
📄 dmsetup [E] [D]
📄 dmstats [E] [D]
📄 dnssec-checkds [E] [D]
📄 dnssec-coverage [E] [D]
📄 dnssec-dsfromkey [E] [D]
📄 dnssec-importkey [E] [D]
📄 dnssec-keyfromlabel [E] [D]
📄 dnssec-keygen [E] [D]
📄 dnssec-keymgr [E] [D]
📄 dnssec-revoke [E] [D]
📄 dnssec-settime [E] [D]
📄 dnssec-signzone [E] [D]
📄 dnssec-verify [E] [D]
📄 dovecot [E] [D]
📄 dracut [E] [D]
📄 dumpe2fs [E] [D]
📄 e2freefrag [E] [D]
📄 e2fsck [E] [D]
📄 e2image [E] [D]
📄 e2label [E] [D]
📄 e2undo [E] [D]
📄 e4defrag [E] [D]
📄 eapol_test [E] [D]
📄 edquota [E] [D]
📄 ether-wake [E] [D]
📄 ethtool [E] [D]
📄 faillock [E] [D]
📄 fdformat [E] [D]
📄 fdisk [E] [D]
📄 filefrag [E] [D]
📄 findfs [E] [D]
📄 fixfiles [E] [D]
📄 fsck [E] [D]
📄 fsck.btrfs [E] [D]
📄 fsck.cramfs [E] [D]
📄 fsck.ext2 [E] [D]
📄 fsck.ext3 [E] [D]
📄 fsck.ext4 [E] [D]
📄 fsck.minix [E] [D]
📄 fsck.xfs [E] [D]
📄 fsfreeze [E] [D]
📄 fstrim [E] [D]
📄 fuser [E] [D]
📄 genccode [E] [D]
📄 gencmn [E] [D]
📄 genhomedircon [E] [D]
📄 genhostid [E] [D]
📄 genl [E] [D]
📄 genl-ctrl-list [E] [D]
📄 gennorm2 [E] [D]
📄 genrandom [E] [D]
📄 gensprep [E] [D]
📄 getcap [E] [D]
📄 getenforce [E] [D]
📄 getpcaps [E] [D]
📄 getsebool [E] [D]
📄 glibc_post_upgrade.x86_64 [E] [D]
📄 groupadd [E] [D]
📄 groupdel [E] [D]
📄 groupmems [E] [D]
📄 groupmod [E] [D]
📄 grpck [E] [D]
📄 grpconv [E] [D]
📄 grpunconv [E] [D]
📄 grub2-bios-setup [E] [D]
📄 grub2-get-kernel-settings [E] [D]
📄 grub2-install [E] [D]
📄 grub2-macbless [E] [D]
📄 grub2-mkconfig [E] [D]
📄 grub2-ofpathname [E] [D]
📄 grub2-probe [E] [D]
📄 grub2-reboot [E] [D]
📄 grub2-rpm-sort [E] [D]
📄 grub2-set-default [E] [D]
📄 grub2-setpassword [E] [D]
📄 grub2-sparc64-setup [E] [D]
📄 grubby [E] [D]
📄 gss-server [E] [D]
📄 halt [E] [D]
📄 hardlink [E] [D]
📄 hwclock [E] [D]
📄 iconvconfig [E] [D]
📄 iconvconfig.x86_64 [E] [D]
📄 icupkg [E] [D]
📄 ifcfg [E] [D]
📄 ifconfig [E] [D]
📄 ifdown [E] [D]
📄 ifenslave [E] [D]
📄 ifstat [E] [D]
📄 ifup [E] [D]
📄 init [E] [D]
📄 insmod [E] [D]
📄 install-info [E] [D]
📄 installkernel [E] [D]
📄 intel-microcode2ucode [E] [D]
📄 ip [E] [D]
📄 ip6tables [E] [D]
📄 ip6tables-restore [E] [D]
📄 ip6tables-save [E] [D]
📄 ipmaddr [E] [D]
📄 iptables [E] [D]
📄 iptables-restore [E] [D]
📄 iptables-save [E] [D]
📄 iptunnel [E] [D]
📄 irqbalance [E] [D]
📄 isc-hmac-fixup [E] [D]
📄 kexec [E] [D]
📄 killall5 [E] [D]
📄 kpartx [E] [D]
📄 lchage [E] [D]
📄 ldattach [E] [D]
📄 ldconfig [E] [D]
📄 lfd [E] [D]
📄 lgroupadd [E] [D]
📄 lgroupdel [E] [D]
📄 lgroupmod [E] [D]
📄 lid [E] [D]
📄 lnewusers [E] [D]
📄 lnstat [E] [D]
📄 load_policy [E] [D]
📄 logrotate [E] [D]
📄 logsave [E] [D]
📄 losetup [E] [D]
📄 lpasswd [E] [D]
📄 lsmod [E] [D]
📄 lsof [E] [D]
📄 luseradd [E] [D]
📄 luserdel [E] [D]
📄 lusermod [E] [D]
📄 lwresd [E] [D]
📄 makedumpfile [E] [D]
📄 matchpathcon [E] [D]
📄 mii-diag [E] [D]
📄 mii-tool [E] [D]
📄 mkdict [E] [D]
📄 mkdumprd [E] [D]
📄 mke2fs [E] [D]
📄 mkfs [E] [D]
📄 mkfs.btrfs [E] [D]
📄 mkfs.cramfs [E] [D]
📄 mkfs.ext2 [E] [D]
📄 mkfs.ext3 [E] [D]
📄 mkfs.ext4 [E] [D]
📄 mkfs.minix [E] [D]
📄 mkfs.xfs [E] [D]
📄 mkhomedir_helper [E] [D]
📄 mklost+found [E] [D]
📄 mkswap [E] [D]
📄 modinfo [E] [D]
📄 modprobe [E] [D]
📄 mysqld [E] [D]
📄 named [E] [D]
📄 named-checkconf [E] [D]
📄 named-checkzone [E] [D]
📄 named-compilezone [E] [D]
📄 named-journalprint [E] [D]
📄 nameif [E] [D]
📄 netreport [E] [D]
📄 new-kernel-pkg [E] [D]
📄 newusers [E] [D]
📄 nl-class-add [E] [D]
📄 nl-class-delete [E] [D]
📄 nl-class-list [E] [D]
📄 nl-classid-lookup [E] [D]
📄 nl-cls-add [E] [D]
📄 nl-cls-delete [E] [D]
📄 nl-cls-list [E] [D]
📄 nl-link-list [E] [D]
📄 nl-pktloc-lookup [E] [D]
📄 nl-qdisc-add [E] [D]
📄 nl-qdisc-delete [E] [D]
📄 nl-qdisc-list [E] [D]
📄 nologin [E] [D]
📄 nsec3hash [E] [D]
📄 nstat [E] [D]
📄 ownership [E] [D]
📄 packer [E] [D]
📄 pam_console_apply [E] [D]
📄 pam_tally2 [E] [D]
📄 pam_timestamp_check [E] [D]
📄 paperconfig [E] [D]
📄 parted [E] [D]
📄 partprobe [E] [D]
📄 partx [E] [D]
📄 pflogsumm [E] [D]
📄 pidof [E] [D]
📄 ping6 [E] [D]
📄 pivot_root [E] [D]
📄 plipconfig [E] [D]
📄 pluginviewer [E] [D]
📄 portrelease [E] [D]
📄 portreserve [E] [D]
📄 postalias [E] [D]
📄 postcat [E] [D]
📄 postconf [E] [D]
📄 postdrop [E] [D]
📄 postfix [E] [D]
📄 postkick [E] [D]
📄 postlock [E] [D]
📄 postlog [E] [D]
📄 postmap [E] [D]
📄 postmulti [E] [D]
📄 postqueue [E] [D]
📄 postsuper [E] [D]
📄 poweroff [E] [D]
📄 ppp-watch [E] [D]
📄 pure-authd [E] [D]
📄 pure-config.pl [E] [D]
📄 pure-config.py [E] [D]
📄 pure-ftpd [E] [D]
📄 pure-ftpwho [E] [D]
📄 pure-mrtginfo [E] [D]
📄 pure-quotacheck [E] [D]
📄 pure-uploadscript [E] [D]
📄 pwck [E] [D]
📄 pwconv [E] [D]
📄 pwhistory_helper [E] [D]
📄 pwunconv [E] [D]
📄 qshape [E] [D]
📄 quot [E] [D]
📄 quotacheck [E] [D]
📄 quotaoff [E] [D]
📄 quotaon [E] [D]
📄 quotastats [E] [D]
📄 rcmysql [E] [D]
📄 rdisc [E] [D]
📄 rdma [E] [D]
📄 readprofile [E] [D]
📄 reboot [E] [D]
📄 repquota [E] [D]
📄 resize2fs [E] [D]
📄 resizepart [E] [D]
📄 restorecon [E] [D]
📄 rmmod [E] [D]
📄 rndc [E] [D]
📄 rndc-confgen [E] [D]
📄 route [E] [D]
📄 routef [E] [D]
📄 routel [E] [D]
📄 rpc.rquotad [E] [D]
📄 rpcbind [E] [D]
📄 rpcinfo [E] [D]
📄 rsyslogd [E] [D]
📄 rtacct [E] [D]
📄 rtcwake [E] [D]
📄 rtmon [E] [D]
📄 rtpr [E] [D]
📄 rtstat [E] [D]
📄 runlevel [E] [D]
📄 runuser [E] [D]
📄 safe_finger [E] [D]
📄 sasl2-shared-mechlist [E] [D]
📄 saslauthd [E] [D]
📄 sasldblistusers2 [E] [D]
📄 saslpasswd2 [E] [D]
📄 sefcontext_compile [E] [D]
📄 selabel_digest [E] [D]
📄 selabel_lookup [E] [D]
📄 selabel_lookup_best_match [E] [D]
📄 selabel_partial_match [E] [D]
📄 selinux_restorecon [E] [D]
📄 selinuxconlist [E] [D]
📄 selinuxdefcon [E] [D]
📄 selinuxenabled [E] [D]
📄 selinuxexeccon [E] [D]
📄 semanage [E] [D]
📄 semodule [E] [D]
📄 sendmail [E] [D]
📄 sendmail.postfix [E] [D]
📄 service [E] [D]
📄 sestatus [E] [D]
📄 setcap [E] [D]
📄 setenforce [E] [D]
📄 setfiles [E] [D]
📄 setquota [E] [D]
📄 setsebool [E] [D]
📄 sfdisk [E] [D]
📄 shutdown [E] [D]
📄 sim_server [E] [D]
📄 slattach [E] [D]
📄 sln [E] [D]
📄 smtp-sink [E] [D]
📄 smtp-source [E] [D]
📄 snmpd [E] [D]
📄 snmptrapd [E] [D]
📄 ss [E] [D]
📄 sshd [E] [D]
📄 sshd-keygen [E] [D]
📄 sulogin [E] [D]
📄 sushell [E] [D]
📄 swaplabel [E] [D]
📄 swapoff [E] [D]
📄 swapon [E] [D]
📄 switch_root [E] [D]
📄 sys-unconfig [E] [D]
📄 sysctl [E] [D]
📄 tc [E] [D]
📄 tcpd [E] [D]
📄 tcpdmatch [E] [D]
📄 tcsd [E] [D]
📄 telinit [E] [D]
📄 testsaslauthd [E] [D]
📄 tmpwatch [E] [D]
📄 tracepath [E] [D]
📄 tracepath6 [E] [D]
📄 try-from [E] [D]
📄 tsig-keygen [E] [D]
📄 tune2fs [E] [D]
📄 tuned [E] [D]
📄 tuned-adm [E] [D]
📄 udevadm [E] [D]
📄 unix_chkpwd [E] [D]
📄 unix_update [E] [D]
📄 update-alternatives [E] [D]
📄 useradd [E] [D]
📄 userdel [E] [D]
📄 userhelper [E] [D]
📄 usermod [E] [D]
📄 usernetctl [E] [D]
📄 uuserver [E] [D]
📄 vigr [E] [D]
📄 vipw [E] [D]
📄 virt-what [E] [D]
📄 visudo [E] [D]
📄 vmcore-dmesg [E] [D]
📄 vpddecode [E] [D]
📄 weak-modules [E] [D]
📄 wipefs [E] [D]
📄 wpa_cli [E] [D]
📄 wpa_passphrase [E] [D]
📄 wpa_supplicant [E] [D]
📄 xfs_admin [E] [D]
📄 xfs_bmap [E] [D]
📄 xfs_copy [E] [D]
📄 xfs_db [E] [D]
📄 xfs_estimate [E] [D]
📄 xfs_freeze [E] [D]
📄 xfs_fsr [E] [D]
📄 xfs_growfs [E] [D]
📄 xfs_info [E] [D]
📄 xfs_io [E] [D]
📄 xfs_logprint [E] [D]
📄 xfs_mdrestore [E] [D]
📄 xfs_metadump [E] [D]
📄 xfs_mkfile [E] [D]
📄 xfs_ncheck [E] [D]
📄 xfs_quota [E] [D]
📄 xfs_repair [E] [D]
📄 xfs_rtcp [E] [D]
📄 xqmstats [E] [D]
📄 xtables-multi [E] [D]
📄 yum-complete-transaction [E] [D]
📄 yumdb [E] [D]
📄 zdump [E] [D]
📄 zic [E] [D]
📄 zramctl [E] [D]

Editing: mkdumprd

#!/bin/bash --norc
# New mkdumprd
#
# Copyright 2011 Red Hat, Inc.
#
# Written by Cong Wang <amwang@redhat.com>
#

. /lib/kdump/kdump-lib.sh
export IN_KDUMP=1

conf_file="/etc/kdump.conf"
SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
SAVE_PATH=$(grep ^path $conf_file| cut -d' '  -f2)
[ -z "$SAVE_PATH" ] && SAVE_PATH=$DEFAULT_PATH
# strip the duplicated "/"
SAVE_PATH=$(echo $SAVE_PATH | tr -s /)

is_wdt_addition_needed() {
	local active

is_wdt_mod_omitted
	[[ $? -eq 0 ]] && return 1
	[[ -d /sys/class/watchdog/ ]] || return 1
	for dir in /sys/class/watchdog/*; do
		[[ -f "$dir/state" ]] || continue
		active=$(< "$dir/state")
		[[ "$active" =  "active" ]] && return 0
	done
	return 1
}

WDTCFG=""
is_wdt_addition_needed
[[ $? -eq 0 ]] && WDTCFG="-a watchdog"

extra_modules=""
if has_hpwdt; then
	extra_modules=hpwdt
fi
dracut_args=("--quiet" "--hostonly" "--hostonly-cmdline" "--hostonly-i18n" "--hostonly-mode" "strict" "-o" "plymouth dash resume ifcfg" $WDTCFG)
OVERRIDE_RESETTABLE=0

add_dracut_arg() {
    local arg qarg is_quoted=0
    while [ $# -gt 0 ];
    do
        arg="${1//\'/\"}"
        #Handle quoted substring properly for passing it to dracut_args array.
        if [ $is_quoted -eq 0 ]; then
            if [[ "$arg" == "\"" ]] || [[ $arg != ${arg#\"} ]]; then
                is_quoted=1
                arg=${arg#\"}
            fi
        fi
        if [ $is_quoted -eq 1 ]; then
            qarg="$qarg $arg"
            if [[ "$arg" == "\"" ]] || [[ $arg != ${arg%\"} ]]; then
                is_quoted=0
                arg=${qarg%\"}
                qarg=""
            else
                shift
                continue
            fi
        fi
        dracut_args+=("$arg")
        shift
    done
}

add_dracut_module() {
    add_dracut_arg "--add" "$1"
}

add_dracut_mount() {
    add_dracut_arg "--mount" "$1"
}

add_dracut_sshkey() {
    add_dracut_arg "--sshkey" "$1"
}

# Generic substring function.  If $2 is in $1, return 0.
strstr() { [[ $1 =~ $2 ]]; }

# caller should ensure $1 is valid and mounted in 1st kernel
to_mount() {
    local _dev=$1 _source _target _fstype _options _mntopts _pdev

_source=$(findmnt -k -f -n -r -o SOURCE $_dev)
    _target=$(get_mntpoint_from_target $_dev)
    # mount under /sysroot if dump to root disk or mount under
    #/kdumproot/$_target in other cases in 2nd kernel. systemd
    #will be in charge to umount it.

if [ "$_target" = "/" ];then
        _target="/sysroot"
    else
        _target="/kdumproot/$_target"
    fi

_fstype=$(findmnt -k -f -n -r -o FSTYPE $_dev)
    [[ -e /etc/fstab ]] && _options=$(findmnt --fstab -f -n -r -o OPTIONS $_dev)
    [ -z "$_options" ] && _options=$(findmnt -k -f -n -r -o OPTIONS $_dev)
    # mount fs target as rw in 2nd kernel
    _options=$(echo $_options | sed 's/$^\|,$ro$$\|,$/\1rw\2/g')
    # with 'noauto' in fstab nfs and non-root disk mount will fail in 2nd
    # kernel, filter it out here.
    _options=$(echo $_options | sed 's/$^\|,$noauto$$\|,$/\1/g')
    # drop nofail or nobootwait
    _options=$(echo $_options | sed 's/$^\|,$nofail$$\|,$/\1/g')
    _options=$(echo $_options | sed 's/$^\|,$nobootwait$$\|,$/\1/g')

_mntopts="$_target $_fstype $_options"
    #for non-nfs _dev converting to use udev persistent name
    if [ -b "$_source" ]; then
        _pdev="$(kdump_get_persistent_dev $_source $_fstype)"
        if [ $? -ne 0 ]; then
            return 1
        fi

else
        _pdev=$_dev
    fi

echo "$_pdev $_mntopts"
}

is_readonly_mount() {
    local _mnt
    _mnt=$(findmnt -k -f -n -r -o OPTIONS $1)

#fs/proc_namespace.c: show_mountinfo():
    #seq_puts(m, mnt->mnt_flags & MNT_READONLY ? " ro" : " rw");
    [[ "$_mnt" =~ ^ro ]]
}

#Function: get_ssh_size
#$1=dump target
#called from while loop and shouldn't read from stdin, so we're using "ssh -n"
get_ssh_size() {
    local _opt _out _size
    _opt="-i $SSH_KEY_LOCATION -o BatchMode=yes -o StrictHostKeyChecking=yes"
    _out=$(ssh -q -n $_opt $1 "df -P $SAVE_PATH")
    [ $? -ne 0 ] && {
        perror_exit "checking remote ssh server available size failed."
    }

#ssh output removed the line break, so print field NF-2
    _size=$(echo -n $_out| awk '{avail=NF-2; print $avail}')
    echo -n $_size
}

#mkdir if save path does not exist on ssh dump target
#$1=ssh dump target
#caller should ensure write permission on $1:$SAVE_PATH
#called from while loop and shouldn't read from stdin, so we're using "ssh -n"
mkdir_save_path_ssh()
{
    local _opt _dir
    _opt="-i $SSH_KEY_LOCATION -o BatchMode=yes -o StrictHostKeyChecking=yes"
    ssh -qn $_opt $1 mkdir -p $SAVE_PATH 2>&1 > /dev/null
    _ret=$?
    if [ $_ret -ne 0 ]; then
        perror_exit "mkdir failed on $1:$SAVE_PATH"
    fi

#check whether user has write permission on $1:$SAVE_PATH
    _dir=$(ssh -qn $_opt $1 mktemp -dqp $SAVE_PATH 2>/dev/null)
    _ret=$?
    if [ $_ret -ne 0 ]; then
        perror_exit "Could not create temporary directory on $1:$SAVE_PATH. Make sure user has write permission on destination"
    fi
    ssh -qn $_opt $1 rmdir $_dir

return 0
}

#Function: get_fs_size
#$1=dump target
get_fs_size() {
    local _mnt=$(get_mntpoint_from_target $1)
    echo -n $(df -P "${_mnt}/$SAVE_PATH"|tail -1|awk '{print $4}')
}

#Function: get_raw_size
#$1=dump target
get_raw_size() {
        echo -n $(fdisk -s "$1")
}

#Function: check_size
#$1: dump type string ('raw', 'fs', 'ssh')
#$2: dump target
check_size() {
    local avail memtotal

memtotal=$(awk '/MemTotal/{print $2}' /proc/meminfo)
    case "$1" in
        raw)
            avail=$(get_raw_size "$2")
            ;;
        ssh)
            avail=$(get_ssh_size "$2")
            ;;
        fs)
            avail=$(get_fs_size "$2")
            ;;
        *)
            return
    esac

if [ $? -ne 0 ]; then
            perror_exit "Check dump target size failed"
    fi

if [ $avail -lt $memtotal ]; then
        echo "Warning: There might not be enough space to save a vmcore."
        echo "         The size of $2 should be greater than $memtotal kilo bytes."
    fi
}

# $1: core_collector config value
verify_core_collector() {
    if grep -q "^raw" $conf_file && [ "${1%% *}" != "makedumpfile" ]; then
        echo "Warning: specifying a non-makedumpfile core collector, you will have to recover the vmcore manually."
    fi
    if is_ssh_dump_target || is_raw_dump_target; then
        if [ "${1%% *}" = "makedumpfile" ]; then
            ! strstr "$1" "-F" && {
                perror_exit "The specified dump target needs makedumpfile \"-F\" option."
            }
        fi
    fi
}

add_mount() {
    local _mnt=$(to_mount "$1")

if [ $? -ne 0 ]; then
        exit 1
    fi

add_dracut_mount "$_mnt"
}

# get_maj_min <device>
# Prints the major and minor of a device node.
# Example:
# $ get_maj_min /dev/sda2
# 8:2
get_maj_min() {
    local _dev
    _dev=$(stat -L -c '$((0x%t)):$((0x%T))' "$1" 2>/dev/null)
    _dev=$(eval "echo $_dev")
    echo $_dev
}

# ugly workaround for the lvm design
# There is no volume group device,
# so, there are no slave devices for volume groups.
# Logical volumes only have the slave devices they really live on,
# but you cannot create the logical volume without the volume group.
# And the volume group might be bigger than the devices the LV needs.
check_vol_slaves() {
    local _lv _vg _pv
    for i in /dev/mapper/*; do
        _lv=$(get_maj_min $i)
        if [[ $_lv = $2 ]]; then
            _vg=$(lvm lvs --noheadings -o vg_name $i 2>/dev/null)
            # strip space
            _vg=$(echo $_vg)
            if [[ $_vg ]]; then
                for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2>/dev/null)
                do
                    check_block_and_slaves $1 $(get_maj_min $_pv) && return 0
                done
            fi
        fi
    done
    return 1
}

# Walk all the slave relationships for a given block device.
# Stop when our helper function returns success
# $1 = function to call on every found block device
# $2 = block device in major:minor format
check_block_and_slaves() {
    local _x
    [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
    "$1" $2 && return
    check_vol_slaves "$@" && return 0
    if [[ -f /sys/dev/block/$2/../dev ]]; then
        check_block_and_slaves $1 $(cat "/sys/dev/block/$2/../dev") && return 0
    fi
    [[ -d /sys/dev/block/$2/slaves ]] || return 1
    for _x in /sys/dev/block/$2/slaves/*/dev; do
        [[ -f $_x ]] || continue
        check_block_and_slaves $1 $(cat "$_x") && return 0
    done
    return 1
}

#handle the case user does not specify the dump target explicitly
handle_default_dump_target()
{
    local _target
    local _mntpoint

is_user_configured_dump_target && return

check_save_path_fs $SAVE_PATH

_mntpoint=$(get_mntpoint_from_path $SAVE_PATH)
    _target=$(get_target_from_path $SAVE_PATH)

if is_atomic && is_bind_mount $_mntpoint; then
        SAVE_PATH=${SAVE_PATH##"$_mntpoint"}
        # the real dump path in the 2nd kernel, if the mount point is bind mounted.
        SAVE_PATH=$(get_bind_mount_directory $_mntpoint)/$SAVE_PATH
        _mntpoint=$(get_mntpoint_from_target $_target)

# the absolute path in the 1st kernel
        SAVE_PATH=$_mntpoint/$SAVE_PATH
    fi

SAVE_PATH=${SAVE_PATH##"$_mntpoint"}
    add_mount "$_target"
    check_size fs $_target
}

get_override_resettable()
{
    local override_resettable

override_resettable=$(grep "^override_resettable" $conf_file)
    if [ -n "$override_resettable" ]; then
        OVERRIDE_RESETTABLE=$(echo $override_resettable | cut -d' '  -f2)
        if [ "$OVERRIDE_RESETTABLE" != "0" ] && [ "$OVERRIDE_RESETTABLE" != "1" ];then
            perror_exit "override_resettable value $OVERRIDE_RESETTABLE is invalid"
        fi
    fi
}

# $1: function name
for_each_block_target()
{
    local dev majmin

for dev in $(get_kdump_targets); do
        [ -b "$dev" ] || continue
        majmin=$(get_maj_min $dev)
        check_block_and_slaves $1 $majmin && return 1
    done

return 0
}

#judge if a specific device with $1 is unresettable
#return false if unresettable.
is_unresettable()
{
    local path="/sys/$(udevadm info --query=all --path=/sys/dev/block/$1 | awk '/^P:/ {print $2}' | sed -e 's/$cciss[0-9]\+\/$.*/\1/g' -e 's/\/block\/.*$//')/resettable"
    local resettable=1

if [ -f "$path" ]
    then
        resettable="$(cat $path)"
        [ $resettable -eq 0 -a "$OVERRIDE_RESETTABLE" -eq 0 ] && {
            local device=$(udevadm info --query=all --path=/sys/dev/block/$1 | awk -F= '/DEVNAME/{print $2}')
            echo "Error: Can not save vmcore because device $device is unresettable"
            return 0
        }
    fi

return 1
}

#check if machine is resettable.
#return true if resettable
check_resettable()
{
    local _ret _target

get_override_resettable

for_each_block_target is_unresettable
    _ret=$?

[ $_ret -eq 0 ] && return

return 1
}

# $1: maj:min
is_crypt()
{
    local majmin=$1 dev line ID_FS_TYPE=""

line=$(udevadm info --query=property --path=/sys/dev/block/$majmin \
            | grep "^ID_FS_TYPE")
    eval "$line"
    [[ "$ID_FS_TYPE" = "crypto_LUKS" ]] && {
        dev=$(udevadm info --query=all --path=/sys/dev/block/$majmin | awk -F= '/DEVNAME/{print $2}')
        echo "Device $dev is encrypted."
        return 0
    }
    return 1
}

check_crypt()
{
    local _ret _target

for_each_block_target is_crypt
    _ret=$?

[ $_ret -eq 0 ] && return

return 1
}

if ! check_resettable; then
    exit 1
fi

if ! check_crypt; then
    echo "Warning: Encrypted device is in dump path. User will prompted for password during second kernel boot."
fi

# firstly get right SSH_KEY_LOCATION
keyfile=$(awk '/^sshkey/ {print $2}' $conf_file)
if [ -f "$keyfile" ]; then
    # canonicalize the path
    SSH_KEY_LOCATION=$(/usr/bin/readlink -m $keyfile)
fi

if [ "$(uname -m)" = "s390x" ]; then
    add_dracut_module "znet"
fi

while read config_opt config_val;
do
    # remove inline comments after the end of a directive.
    case "$config_opt" in
    extra_modules)
        extra_modules="$extra_modules $config_val"
        ;;
    ext[234]|xfs|btrfs|minix|nfs)
        if ! findmnt $config_val >/dev/null; then
            perror_exit "Dump target $config_val is probably not mounted."
        fi

_absolute_save_path=$(make_absolute_save_path $config_val)
        _mntpoint=$(get_mntpoint_from_path $_absolute_save_path)
        if is_atomic && is_bind_mount $_mntpoint; then
            SAVE_PATH=${_absolute_save_path##"$_mntpoint"}
            # the real dump path in the 2nd kernel, if the mount point is bind mounted.
            SAVE_PATH=$(get_bind_mount_directory $_mntpoint)/$SAVE_PATH
        fi

add_mount "$config_val"
        check_save_path_fs $_absolute_save_path
        check_size fs $config_val
        ;;
    raw)
        #checking raw disk writable
        dd if=$config_val count=1 of=/dev/null > /dev/null 2>&1 || {
            perror_exit "Bad raw disk $config_val"
        }
        _praw=$(kdump_get_persistent_dev $config_val "raw")
        if [ $? -ne 0 ]; then
            exit 1
        fi
        add_dracut_arg "--device" "$_praw"
        check_size raw $config_val
        ;;
    ssh)
        if strstr "$config_val" "@";
        then
            check_size ssh $config_val
            mkdir_save_path_ssh $config_val
            add_dracut_module "ssh-client"
		add_dracut_sshkey "$SSH_KEY_LOCATION"
        else
            perror_exit "Bad ssh dump target $config_val"
        fi
        ;;
    core_collector)
        verify_core_collector "$config_val"
        ;;
    dracut_args)
        add_dracut_arg $config_val
        ;;
    *)
        ;;
    esac
done <<< "$(read_strip_comments $conf_file)"

handle_default_dump_target

if [ -n "$extra_modules" ]
then
    add_dracut_arg "--add-drivers" "$extra_modules"
fi

if ! is_fadump_capable; then
    # The 2nd rootfs mount stays behind the normal dump target mount,
    # so it doesn't affect the logic of check_dump_fs_modified().
    is_dump_to_rootfs && add_mount "$(to_dev_name $(get_root_fs_device))"

add_dracut_arg "--no-hostonly-default-device"
fi

dracut "${dracut_args[@]}" "$@"
_rc=$?
sync
exit $_rc