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authorRaghavendra Bhat <raghavendra@redhat.com>2015-07-20 16:03:40 +0530
committerVenky Shankar <vshankar@redhat.com>2015-08-10 21:22:09 -0700
commitc0da330c32312edc4233fe6f660ce8e218638fb5 (patch)
treebae1c42b34d2a60483df6977703542e56055660c /tests/bitrot
parentcdf238e7c90273beff73617481d19d77fc8014db (diff)
tests: set inode-lru-limit to 1 and check if bit-rot xattrs are wrongy created
This test sets the lru limit of the inode table to 1 and checks if inode forgets and resolve cause any problem with bit-rot xattrs (especially bad-file xattr). Change-Id: I1fa25fa2d31dda8d26e8192562e896e5bddd0381 BUG: 1244613 Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-on: http://review.gluster.org/11718 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
Diffstat (limited to 'tests/bitrot')
-rw-r--r--tests/bitrot/bug-1244613.t87
1 files changed, 87 insertions, 0 deletions
diff --git a/tests/bitrot/bug-1244613.t b/tests/bitrot/bug-1244613.t
new file mode 100644
index 0000000..000a1d3
--- /dev/null
+++ b/tests/bitrot/bug-1244613.t
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../nfs.rc
+. $(dirname $0)/../fileio.rc
+
+cleanup;
+
+TESTS_EXPECTED_IN_LOOP=16
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume info;
+
+TEST $CLI volume create $V0 $H0:$B0/brick1;
+EXPECT 'Created' volinfo_field $V0 'Status';
+
+
+# The test makes use of inode-lru-limit to hit a scenario, where we
+# find an inode whose ancestry is not there. Following is the
+# hypothesis (which is confirmed by seeing logs indicating that
+# codepath has been executed, but not through a good understanding of
+# NFS internals).
+
+# At the end of an fop, the reference count of an inode would be
+# zero. The inode (and its ancestry) persists in memory only
+# because of non-zero lookup count. These looked up inodes are put
+# in an lru queue of size 1 (here). So, there can be at most one
+# such inode in memory.
+
+# NFS Server makes use of anonymous fds. So, if it cannot find
+# valid fd, it does a nameless lookup. This gives us an inode
+# whose ancestry is NULL. When a write happens on this inode,
+# quota-enforcer/marker finds a NULL ancestry and asks
+# storage/posix to build it.
+
+TEST $CLI volume set $V0 network.inode-lru-limit 1
+TEST $CLI volume set $V0 performance.nfs.write-behind off
+
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+TEST mount_nfs $H0:/$V0 $N0;
+deep=/0/1/2/3/4/5/6/7/8/9
+TEST mkdir -p $N0/$deep
+
+TEST touch $N0/$deep/file1 $N0/$deep/file2 $N0/$deep/file3 $N0/$deep/file4
+
+TEST fd_open 3 'w' "$N0/$deep/file1"
+TEST fd_open 4 'w' "$N0/$deep/file2"
+TEST fd_open 5 'w' "$N0/$deep/file3"
+TEST fd_open 6 'w' "$N0/$deep/file4"
+
+# consume all quota
+echo "Hello" > $N0/$deep/new_file_1
+echo "World" >> $N0/$deep/new_file_1
+echo 1 >> $N0/$deep/new_file_1
+echo 2 >> $N0/$deep/new_file_1
+
+
+# At the end of each fop in server, reference count of the
+# inode associated with each of the file above drops to zero and hence
+# put into lru queue. Since lru-limit is set to 1, an fop next file
+# will displace the current inode from itable. This will ensure that
+# when writes happens on same fd, fd resolution results in
+# nameless lookup from server and encounters an fd
+# associated with an inode whose parent is not present in itable.
+
+for j in $(seq 1 2); do
+ for i in $(seq 3 6); do
+ TEST_IN_LOOP fd_write $i "content"
+ TEST_IN_LOOP sync
+ done
+done
+
+exec 3>&-
+exec 4>&-
+exec 5>&-
+exec 6>&-
+
+$CLI volume statedump $V0 all
+
+EXPECT_WITHIN $UMOUNT_TIMEOUT "Y" force_umount $N0
+
+TEST $CLI volume stop $V0
+
+cleanup;