fs_mgr: overlayfs: test: check for ext4 dedupe needing overlay
Check if any system partition looks like it has ext dedupe or
rather shared_blocks feature enabled, if so then we expect
overlayfs to kick in. We do this to deal with any flakiness
in the test when right-sizing is not applied to the platform.
Minor: older devices mounted persist to /persist.
Test: adb-remount-test.sh
Bug: 109821005
Bug: 123079041
Change-Id: Iab7c6cf7f24f2c446aeb149e3f65d6793a42c6ea
diff --git a/fs_mgr/tests/adb-remount-test.sh b/fs_mgr/tests/adb-remount-test.sh
index 0765f04..98e4e29 100755
--- a/fs_mgr/tests/adb-remount-test.sh
+++ b/fs_mgr/tests/adb-remount-test.sh
@@ -309,7 +309,7 @@
-e "^\(overlay\|tmpfs\|none\|sysfs\|proc\|selinuxfs\|debugfs\) " \
-e "^\(bpf\|cg2_bpf\|pstore\|tracefs\|adb\|mtp\|ptp\|devpts\) " \
-e "^\(/data/media\|/dev/block/loop[0-9]*\) " \
- -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|metadata\) "
+ -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|persist\|metadata\) "
}
if [ X"-s" = X"${1}" -a -n "${2}" ]; then
@@ -403,9 +403,15 @@
echo "${D}" | grep -v /dev/root`
fi
D=`echo "${D}" | cut -s -d' ' -f1 | sort -u`
+no_dedupe=true
+for d in ${D}; do
+ adb_sh tune2fs -l $d 2>&1 |
+ grep "Filesystem features:.*shared_blocks" >/dev/null &&
+ no_dedupe=false
+done
D=`adb_sh df -k ${D} </dev/null`
echo "${D}"
-if [ X"${D}" = X"${D##* 100[%] }" ]; then
+if [ X"${D}" = X"${D##* 100[%] }" ] && ${no_dedupe} ; then
overlayfs_needed=false
elif ! ${overlayfs_supported}; then
die "need overlayfs, but do not have it"