From 94cc33f017b45dfdc137672e8e6feddc5ff56a9e Mon Sep 17 00:00:00 2001
From: Marcel Telka <marcel@telka.sk>
Date: Wed, 19 Oct 2016 10:50:39 -0700
Subject: [PATCH] OpenZFS 7103 - failed test
 cli_root/zfs_snapshot/zfs_snapshot_009_pos

Authored by: Marcel Telka <marcel@telka.sk>
Reviewed by: - Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: - Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: - John Kennedy <john.kennedy@delphix.com>
Approved by: - Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>

OpenZFS-issue: https://www.illumos.org/issues/7103
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/3bfdbb4
Closes #5780
---
 .../zfs_snapshot/zfs_snapshot_009_pos.ksh     | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/tests/zfs-tests/tests/functional/cli_root/zfs_snapshot/zfs_snapshot_009_pos.ksh b/tests/zfs-tests/tests/functional/cli_root/zfs_snapshot/zfs_snapshot_009_pos.ksh
index 1a26ef00c438..ff0cdf1296ad 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zfs_snapshot/zfs_snapshot_009_pos.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zfs_snapshot/zfs_snapshot_009_pos.ksh
@@ -26,6 +26,8 @@
 
 . $STF_SUITE/include/libtest.shlib
 
+ZFS_MAX_DATASET_NAME_LEN=256
+
 function cleanup
 {
 	for ds in $datasets; do
@@ -36,14 +38,18 @@ function cleanup
 datasets="$TESTPOOL/$TESTFS1 $TESTPOOL/$TESTFS2
     $TESTPOOL/$TESTFS3"
 
+# We subtract 3 for slash (/), at (@), and the terminating nul (\0)
+SNAPSHOT_XXX=$(printf 'x%.0s' \
+    {1..$(($ZFS_MAX_DATASET_NAME_LEN - ${#TESTPOOL} - ${#TESTFS1} - 3))})
+
 invalid_args=("$TESTPOOL/$TESTFS1@now $TESTPOOL/$TESTFS2@now \
     $TESTPOOL/$TESTFS@blah?" "$TESTPOOL/$TESTFS1@blah* \
     $TESTPOOL/$TESTFS2@blah? $TESTPOOL/$TESTFS3@blah%" \
-    "$TESTPOOL/$TESTFS1@$($PYTHON -c 'print "x" * 300') $TESTPOOL/$TESTFS2@300 \
+    "$TESTPOOL/$TESTFS1@x$SNAPSHOT_XXX $TESTPOOL/$TESTFS2@300 \
     $TESTPOOL/$TESTFS3@300")
 
 valid_args=("$TESTPOOL/$TESTFS1@snap $TESTPOOL/$TESTFS2@snap \
-    $TESTPOOL/$TESTFS3@snap" "$TESTPOOL/$TESTFS1@$($PYTHON -c 'print "x" * 200')\
+    $TESTPOOL/$TESTFS3@snap" "$TESTPOOL/$TESTFS1@$SNAPSHOT_XXX \
     $TESTPOOL/$TESTFS2@2 $TESTPOOL/$TESTFS3@s")
 
 log_assert "verify zfs supports multiple consistent snapshots"
@@ -89,12 +95,17 @@ for ds in $datasets; do
 	    "the filesystem"
 done
 
+# We subtract 3 + 7 + 7 + 1 = 18 for three slashes (/), strlen("TESTFSA") == 7,
+# strlen("TESTFSB") == 7, and the terminating nul (\0)
+DATASET_XXX=$(printf 'x%.0s' \
+    {1..$(($ZFS_MAX_DATASET_NAME_LEN - ${#TESTPOOL} - ${#TESTFS3} - 18))})
+
 log_note "verify multiple snapshot with -r option"
 log_must $ZFS create $TESTPOOL/TESTFS4
-log_must $ZFS create -p $TESTPOOL/$TESTFS3/TESTFSA$($PYTHON -c 'print "x" * 210')/TESTFSB
+log_must $ZFS create -p $TESTPOOL/$TESTFS3/TESTFSA$DATASET_XXX/TESTFSB
 log_mustnot $ZFS snapshot -r $TESTPOOL/$TESTFS1@snap1 $TESTPOOL/$TESTFS2@snap1 \
         $TESTPOOL/$TESTFS3@snap1 $TESTPOOL/TESTFS4@snap1
-log_must $ZFS rename  $TESTPOOL/$TESTFS3/TESTFSA$($PYTHON -c 'print "x" * 210') \
+log_must $ZFS rename $TESTPOOL/$TESTFS3/TESTFSA$DATASET_XXX \
     $TESTPOOL/$TESTFS3/TESTFSA
 log_must $ZFS snapshot -r $TESTPOOL/$TESTFS1@snap1 $TESTPOOL/$TESTFS2@snap1 \
         $TESTPOOL/$TESTFS3@snap1 $TESTPOOL/TESTFS4@snap1