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mkdumprd: omit crypt when there is no crypt kdump target 

Resolves: bz1451717
https://bugzilla.redhat.com/1451717

When there is no crypt related kdump target, we can safely
omit "crypt" dracut module, this can avoid the pop asking
disk password during kdump boot in some cases.

This patch introduces omit_dracut_modules() before calling
dracut, we can omit more modules to reduce initrd size in
the future.

We don't want to omit any module for fadump, thus we move
is_fadump_capable() into kdump-lib.sh as a helper to use.

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
This commit is contained in:
Xunlei Pang 2017-07-07 15:48:56 +08:00 committed by Dave Young
parent cb38b32dfc
commit 54a5bcc4ee
3 changed files with 27 additions and 12 deletions
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12
kdump-lib.sh
View File

@ -6,6 +6,7 @@
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"
perror_exit() {
echo $@ >&2
@ -481,3 +482,14 @@ get_dracut_args_target()
{
echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f1
}
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
}

12
kdumpctl
View File

@ -13,7 +13,6 @@ DUMP_TARGET=""
DEFAULT_INITRD=""
DEFAULT_INITRD_BAK=""
TARGET_INITRD=""
FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled"
FADUMP_REGISTER_SYS_NODE="/sys/kernel/fadump_registered"
#kdump shall be the default dump mode
DEFAULT_DUMP_MODE="kdump"
@ -936,17 +935,6 @@ handle_mode_switch()
fi
}
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
}
check_current_fadump_status()
{
# Check if firmware-assisted dump has been registered.

15
mkdumprd
View File

@ -372,11 +372,24 @@ check_crypt()
return 1
}
crypt_exists=0
omit_dracut_modules()
{
# Skip fadump case
is_fadump_capable && return
# Omit "crypt", BZ1451717
if [ "$crypt_exists" == "0" ]; then
add_dracut_arg "--omit" "crypt"
fi
}
if ! check_resettable; then
exit 1
fi
if ! check_crypt; then
crypt_exists=1
echo "Warning: Encrypted device is in dump path. User will prompted for password during second kernel boot."
fi
@ -461,6 +474,8 @@ then
add_dracut_arg "--add-drivers" "$extra_modules"
fi
omit_dracut_modules
dracut "${dracut_args[@]}" "$@"
_rc=$?
sync