[RFC PATCH v3 1/3] common/xfs: add a _require_xfs_shrink helper

Gao Xiang
2021-03-15T11:21:01Z

In order to detect whether the current kernel supports XFS shrinking.

Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
---
common/xfs | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/common/xfs b/common/xfs
index 2156749d..ea3b6cab 100644
--- a/common/xfs
+++ b/common/xfs
@@ -432,6 +432,17 @@ _supports_xfs_scrub()
return 0
}

+_require_xfs_shrink()
+{
+ _require_scratch
+
+ _scratch_mkfs_xfs > /dev/null
+ _scratch_mount
+ $XFS_GROWFS_PROG -D1 "$SCRATCH_MNT" 2>&1 | grep -q 'Invalid argument' || \
+ _notrun "kernel does not support shrinking"
+ _scratch_unmount
+}
+
# run xfs_check and friends on a FS.
_check_xfs_filesystem()
{
--
2.27.0