[LTP] [PATCH] nfs: Adapt the lib to allow to test in 2-host mode

[Sebastian Chlad]

nfs_lib.sh checked key server_side prerequisites on the system under test.
In 2_host setup this incorrectly required server_side tools on lhost.
This patch keep netns behavior unchanged, but in true 2-host mode run
server-side checks on rhost via tst_rhost_run().

Signed-off-by: Sebastian Chlad <sebastian.chlad@suse.com>
---
 testcases/network/nfs/nfs_stress/nfs_lib.sh | 22 +++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/testcases/network/nfs/nfs_stress/nfs_lib.sh b/testcases/network/nfs/nfs_stress/nfs_lib.sh
index 1ac8bd657..e52f96a5a 100644
--- a/testcases/network/nfs/nfs_stress/nfs_lib.sh
+++ b/testcases/network/nfs/nfs_stress/nfs_lib.sh
@@ -45,7 +45,7 @@ TST_SKIP_FILESYSTEMS="exfat,ext2,ext3,fuse,ntfs,vfat,tmpfs"
 TST_MOUNT_DEVICE=1
 TST_FORMAT_DEVICE=1
 TST_NEEDS_ROOT=1
-TST_NEEDS_CMDS="$TST_NEEDS_CMDS mount exportfs mount.nfs"
+TST_NEEDS_CMDS="$TST_NEEDS_CMDS mount mount.nfs"
 TST_SETUP="${TST_SETUP:-nfs_setup}"
 TST_CLEANUP="${TST_CLEANUP:-nfs_cleanup}"
 TST_NEEDS_DRIVERS="nfsd"
@@ -186,10 +186,24 @@ nfs_setup()
 		tst_brk TCONF "Cannot run nfs-stress test on mounted NFS"
 	fi
 
+	if tst_net_use_netns; then
+		tst_cmd_available exportfs || tst_brk TCONF "'exportfs' not found"
+	else
+		tst_rhost_run -c "command -v exportfs >/dev/null" || tst_brk TCONF "'exportfs' not found on rhost"
+	fi
+
 	if tst_cmd_available pgrep; then
-		for i in rpc.mountd rpc.statd; do
-			pgrep $i > /dev/null || tst_brk TCONF "$i not running"
-		done
+		if tst_net_use_netns; then
+			tst_res TINFO "checking rpc.mountd/rpc.statd on lhost (netns mode)"
+			for i in rpc.mountd rpc.statd; do
+				pgrep $i > /dev/null || tst_brk TCONF "$i not running"
+			done
+		else
+			tst_res TINFO "checking rpc.mountd/rpc.statd on rhost (2-host mode)"
+			for i in rpc.mountd rpc.statd; do
+				tst_rhost_run -c "pgrep $i > /dev/null" || tst_brk TCONF "$i not running on rhost"
+			done
+		fi
 	fi
 
 	tst_res TINFO "$(mount.nfs -V)"
-- 
2.51.0