On 05/12/17 at 09:27am, Dave Young wrote:
On 05/11/17 at 01:44pm, Xunlei Pang wrote:
Resolves: bz1449801
"cat $KDUMP_CONFIG_FILE|grep -v "^#"|while read ..." use pipes to invoke subshells, as a result we met "the dreaded inaccessible variables within a subshell problem" as described in the book "Advanced Bash-Scripting Guide".
Is it worth to add a tmp file which dropped comment and blank lines? Seems in mkdumprd there is also a while loop to parse kdump.conf
found some scripts below can strip blank lines and comments (include the comments after valid options in a line): grep -o '^[^#]*' a.conf|grep -v '^\s*(#|$)'
But not sure how to make these two greps in one grep.
It cause regressions, so revert it.
kdumpctl | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/kdumpctl b/kdumpctl index 46b65d2..644cf96 100755 --- a/kdumpctl +++ b/kdumpctl @@ -365,11 +365,11 @@ check_config() return 1 }
- cat $KDUMP_CONFIG_FILE | grep -v "^#" | while read config_opt config_val; do
- while read config_opt config_val; do # remove inline comments after the end of a directive. config_val=$(strip_comments $config_val) case "$config_opt" in
"")
raw|ext2|ext3|ext4|minix|btrfs|xfs|nfs|ssh|sshkey|path|core_collector|kdump_post|kdump_pre|extra_bins|extra_modules|default|force_rebuild|force_no_rebuild|dracut_args|fence_kdump_args|fence_kdump_nodes) [ -z "$config_val" ] && {\#* | "") ;;
@@ -386,7 +386,7 @@ check_config() return 1; ;; esac
- done
done < $KDUMP_CONFIG_FILE
check_default_config || return 1
@@ -799,7 +799,7 @@ load_kdump()
check_ssh_config() {
- cat $KDUMP_CONFIG_FILE | grep -v "^#" | while read config_opt config_val; do
- while read config_opt config_val; do # remove inline comments after the end of a directive. config_val=$(strip_comments $config_val) case "$config_opt" in
@@ -820,7 +820,7 @@ check_ssh_config() *) ;; esac
- done
done < $KDUMP_CONFIG_FILE
#make sure they've configured kdump.conf for ssh dumps local SSH_TARGET=`echo -n $DUMP_TARGET | sed -n '/.*@/p'`
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