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kdumpctl: force rebuild in case of dynamic system modification

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There could be some dynamic system modification, which may affect kdump
kernel boot process. In such situation initramfs must be rebuilt on the
basis of changes.
Since most of these checking methods will use information from
TARGET_INITRD, therefore check its existence in common code.

Signed-off-by: Pratyush Anand <panand@redhat.com>
Acked-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Baoquan He <xlpang@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
This commit is contained in:
Pratyush Anand 2016-05-09 13:47:52 +05:30 committed by Dave Young
parent 87964860b6
commit e4143381b1
1 changed files with 21 additions and 0 deletions
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21
kdumpctl
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@ -327,10 +327,21 @@ setup_target_initrd()
fi
}
# returns 0 if system is not modified
# returns 1 if system is modified
# returns 2 if system modification is invalid
check_system_modified()
{
[[ -f $TARGET_INITRD ]] || return 1
return 0
}
check_rebuild()
{
local extra_modules modified_files=""
local _force_rebuild force_rebuild="0"
local ret system_modified="0"
local initramfs_has_fadump
check_boot_dir
@ -388,6 +399,14 @@ check_rebuild()
fi
done
check_system_modified
ret=$?
if [ $ret -eq 2 ]; then
return 1
elif [ $ret -eq 1 ];then
system_modified="1"
fi
#check if target initrd has fadump support
if [ "$DEFAULT_DUMP_MODE" = "fadump" ] && [ -f "$TARGET_INITRD" ]; then
initramfs_has_fadump=`lsinitrd -m $TARGET_INITRD | grep ^kdumpbase$ | wc -l`
@ -399,6 +418,8 @@ check_rebuild()
echo "$TARGET_INITRD has no fadump support"
elif [ "$force_rebuild" != "0" ]; then
echo -n "Force rebuild $TARGET_INITRD"; echo
elif [ "$system_modified" != "0" ]; then
:
elif [ -n "$modified_files" ]; then
echo "Detected change(s) in the following file(s):"
echo -n " "; echo "$modified_files" | sed 's/\s/\n /g'