common: ignore stderr for the two new svcname helpers

If either utility doesn't support the --svcname switch, ignore the
error output and just return an empty string.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/common/xfs b/common/xfs
index f7a6d2f2f03a4b96848e5c8108a4ebf0c8b916e3..7d7afbb51609516113dcef1298ecb21cdf78dc11 100644 (file)
--- a/common/xfs
+++ b/common/xfs
@@ -2311,7 +2311,7 @@ _xfs_healer() {
 # This is easy because xfs_healer has always supported --svcname.
 _xfs_healer_svcname()
 {
-       _xfs_healer --svcname "$@"
+       _xfs_healer --svcname "$@" 2>/dev/null
 }
 
 # Compute the xfs_scrub systemd service instance name for a given path.  This