From e5417d78a3aa7c596ef4075e1b0574838ae2d828 Mon Sep 17 00:00:00 2001
From: Suikan <26223147+suikan4github@users.noreply.github.com>
Date: Thu, 8 Jul 2021 22:35:18 +0900
Subject: [PATCH 1/4] Fix the unmount fails

Trial fix.
Change the --rbinds to --make-slave.

#17
---
 script/lib/common.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/script/lib/common.sh b/script/lib/common.sh
index ec076b5..b5fd1b4 100644
--- a/script/lib/common.sh
+++ b/script/lib/common.sh
@@ -296,7 +296,9 @@ function post_install() {
 
 	# And mount other directories
 	echo "...Mounting all other dirs."
-	for n in proc sys dev tmp etc/resolv.conf; do mount --rbind "/$n" "${TARGETMOUNTPOINT}/$n"; done
+	mount --make-slave "${TARGETMOUNTPOINT}"
+	mount --rbind /etc/resolv.conf "${TARGETMOUNTPOINT}"/resolv.conf
+#	for n in proc sys dev tmp etc/resolv.conf; do mount --rbind "/$n" "${TARGETMOUNTPOINT}/$n"; done
 
 	# Copy all scripts to the target /tmp for using in chroot session. 
 	echo "...Copy files in current dir to ${TARGETMOUNTPOINT}/tmp."

From c9b69412948af77851454653cb6644c1c0de3e1a Mon Sep 17 00:00:00 2001
From: Suikan <26223147+suikan4github@users.noreply.github.com>
Date: Thu, 8 Jul 2021 22:48:19 +0900
Subject: [PATCH 2/4] Revert "Fix the unmount fails"

This reverts commit e5417d78a3aa7c596ef4075e1b0574838ae2d828.
---
 script/lib/common.sh | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/script/lib/common.sh b/script/lib/common.sh
index b5fd1b4..ec076b5 100644
--- a/script/lib/common.sh
+++ b/script/lib/common.sh
@@ -296,9 +296,7 @@ function post_install() {
 
 	# And mount other directories
 	echo "...Mounting all other dirs."
-	mount --make-slave "${TARGETMOUNTPOINT}"
-	mount --rbind /etc/resolv.conf "${TARGETMOUNTPOINT}"/resolv.conf
-#	for n in proc sys dev tmp etc/resolv.conf; do mount --rbind "/$n" "${TARGETMOUNTPOINT}/$n"; done
+	for n in proc sys dev tmp etc/resolv.conf; do mount --rbind "/$n" "${TARGETMOUNTPOINT}/$n"; done
 
 	# Copy all scripts to the target /tmp for using in chroot session. 
 	echo "...Copy files in current dir to ${TARGETMOUNTPOINT}/tmp."

From 2ae4d6cd269840e324150fbb12f00881ad074d44 Mon Sep 17 00:00:00 2001
From: Suikan <26223147+suikan4github@users.noreply.github.com>
Date: Thu, 8 Jul 2021 23:09:02 +0900
Subject: [PATCH 3/4] Add -l option ot unmount

to surpress the "busy" error
---
 script/lib/common.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/script/lib/common.sh b/script/lib/common.sh
index ec076b5..ba80dff 100644
--- a/script/lib/common.sh
+++ b/script/lib/common.sh
@@ -315,9 +315,9 @@ function post_install() {
 		source "lib/chrooted_job_${DISTRIBUTIONSIGNATURE}.sh"
 	HEREDOC
 
-	# Unmount all
+	# Unmount all. -l ( lazy ) option is added to supress the busy error. 
 	echo "...Unmounting all."
-	umount -R "${TARGETMOUNTPOINT}"
+	umount -R -l "${TARGETMOUNTPOINT}"
 
 	# Finishing message
 	cat <<- HEREDOC

From 20826f2f6903a2263ebcfcab88af068df9e178f3 Mon Sep 17 00:00:00 2001
From: Suikan <26223147+suikan4github@users.noreply.github.com>
Date: Thu, 8 Jul 2021 23:10:39 +0900
Subject: [PATCH 4/4] Update changelog

Unmount fails #17
---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1337cbf..af2b381 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ Record of the modification in project development.
 ### Fixed
 - [Issue 8 : Wrong message after cancellation ](https://github.com/suikan4github/kaiten-yaki/8)
 - [Issue 15 : CITERTIME parameter is not passed to the chrooted_job ](https://github.com/suikan4github/kaiten-yaki/15)
+- [Issue 17 : Unmount fails ](https://github.com/suikan4github/kaiten-yaki/17)
 
 ### Known Issue