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authorRaghavendra G <rgowdapp@redhat.com>2019-11-20 22:31:48 +0530
committerXavi Hernandez <xhernandez@redhat.com>2019-12-19 12:41:14 +0000
commit3389bc58ea9773a66ed4bc7bd96b93dc1c97e4cc (patch)
treecd0deb6568b8e9ea692cd0f9b3f14ebc2582733e
parentd8adc66b79de3f21672884539a65327614e0c6bb (diff)
tests/fuse/bug-965974.t: turn off md-cache, to fix failure of the test
Imagine the following set of operations: 1. touch $M0/file 2. ln $M0/file $M0/file.lnk 3. rm $M1/file 4. wait for md-cache-timeout 5. stat $M0/file.lnk $M0/file stat on $M0/file in step 5 succeeds when md-cache-timeout is non-zero even though it was removed from $M1. The reason is 1. fuse-bridge on $M0 would resolve both file and file.lnk to same inode. This inode i1 is cached in md-cache. 2. After md-cache-timeout lookup on $M0/file.lnk would be sent to backend. This lookup will be successful as file.lnk is present on backend and would refresh the md-cache. 3. The lookup on $M0/file sent within md-cache-timeout after lookup on $M0/file.lnk would be sent with i1. Since i1 was refreshed by lookup on $M0/file.lnk, the cache is deemed valid and md-cache responds lookup on $M0/file as success To fix this failure we can either: 1. remove lookup on $M0/file.lnk, so that lookup on $M0/file is actually sent to backend. 2. turn off md-cache This patch chooses option 2. credits: Csaba Henk <csaba@redhat.com> Change-Id: I352c2acd377fe10c4bdf3b6e53c1de86a4e544c7 Signed-off-by: Raghavendra G <rgowdapp@redhat.com> Updates: bz#1756900
-rw-r--r--tests/bugs/fuse/bug-985074.t5
1 files changed, 2 insertions, 3 deletions
diff --git a/tests/bugs/fuse/bug-985074.t b/tests/bugs/fuse/bug-985074.t
index d10fd9f..ffa6df5 100644
--- a/tests/bugs/fuse/bug-985074.t
+++ b/tests/bugs/fuse/bug-985074.t
@@ -30,7 +30,7 @@ TEST glusterd
TEST $CLI volume create $V0 $H0:$B0/$V0
TEST $CLI volume start $V0
-TEST $CLI volume set $V0 md-cache-timeout 3
+TEST $CLI volume set $V0 performance.stat-prefetch off
TEST glusterfs --volfile-id=$V0 --volfile-server=$H0 $M0 --entry-timeout=0 --attribute-timeout=0
TEST glusterfs --volfile-id=$V0 --volfile-server=$H0 $M1 --entry-timeout=0 --attribute-timeout=0
@@ -40,8 +40,7 @@ TEST ln $M0/file $M0/file.link
TEST ls -ali $M0 $M1
TEST rm -f $M1/file.link
TEST ls -ali $M0 $M1
-# expire the md-cache timeout
-sleep 3
+
TEST mv $M0/file $M0/file.link
TEST stat $M0/file.link
TEST ! stat $M0/file