tests: adapt for composefs

On composefs, / is now an overlay, so some of the commands that query
`/` don't quite work. Tweak them to instead query `/sysroot`, which
should still be the actual storage layer underneath the composefs mount
that we really care about for these tests.

tests/kola/root-reprovision/autosave-xfs/test.sh

@@ -25,7 +25,7 @@ fi
 journalctl -u ignition-ostree-transposefs-autosave-xfs.service --grep=agcount
 ok "autosaved XFS on large disk"
 
-eval $(xfs_info / | grep -o 'agcount=[0-9]*')
+eval $(xfs_info /sysroot | grep -o 'agcount=[0-9]*')
 expected=4
 if [ "$agcount" -gt "$expected" ]; then
     fatal "expected agcount of at most ${expected}, got ${agcount}"

tests/kola/root-reprovision/luks/autosave-xfs/test.sh

@@ -27,7 +27,7 @@ if [ -z "${AUTOPKGTEST_REBOOT_MARK:-}" ]; then
     fi
     ok "autosaved XFS on large disk"
 
-    eval $(xfs_info / | grep -o 'agcount=[0-9]*')
+    eval $(xfs_info /sysroot | grep -o 'agcount=[0-9]*')
     expected=4
     if [ "$agcount" -gt "${expected}" ]; then
         fatal "expected agcount of at most ${expected}, got ${agcount}"

tests/kola/root-reprovision/raid1/test.sh

@@ -18,13 +18,13 @@ set -xeuo pipefail
 # shellcheck disable=SC1091
 . "$KOLA_EXT_DATA/commonlib.sh"
 
-srcdev=$(findmnt -nvr / -o SOURCE)
+srcdev=$(findmnt -nvr /sysroot -o SOURCE)
 [[ ${srcdev} == $(realpath /dev/md/foobar) ]]
 
 blktype=$(lsblk -o TYPE "${srcdev}" --noheadings)
 [[ ${blktype} == raid1 ]]
 
-fstype=$(findmnt -nvr / -o FSTYPE)
+fstype=$(findmnt -nvr /sysroot -o FSTYPE)
 [[ ${fstype} == xfs ]]
 ok "source is XFS on RAID1 device"
 

tests/kola/secex/ensure/test.sh

@@ -30,5 +30,5 @@ grep -q bootfs.roothash /proc/cmdline
 mount /dev/disk/by-label/se /sysroot/se
 [[ -f /sysroot/se/sdboot ]]
 
-check_luks /
+check_luks /sysroot
 check_luks /boot