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From a0661449cd8ba7b851fec473191733767f4541b8 Mon Sep 17 00:00:00 2001
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From: Pranith Kumar K <pkarampu@redhat.com>
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Date: Thu, 28 Mar 2019 17:55:54 +0530
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Subject: [PATCH 46/52] protocol/client: Do not fallback to anon-fd if fd is
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not open
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If an open comes on a file when a brick is down and after the brick comes up,
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a fop comes on the fd, client xlator would still wind the fop on anon-fd
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leading to wrong behavior of the fops in some cases.
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Example:
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If lk fop is issued on the fd just after the brick is up in the scenario above,
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lk fop will be sent on anon-fd instead of failing it on that client xlator.
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This lock will never be freed upon close of the fd as flush on anon-fd is
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invalid and is not wound below server xlator.
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As a fix, failing the fop unless the fd has FALLBACK_TO_ANON_FD flag.
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>Upstream-patch: https://review.gluster.org/c/glusterfs/+/15804
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>Change-Id: I77692d056660b2858e323bdabdfe0a381807cccc
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>fixes bz#1390914
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BUG: 1695057
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Change-Id: Id656bea8dde14327212fbe7ecc97519dc5b32098
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Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/166833
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
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---
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tests/bugs/protocol/bug-1390914.t | 36 ++++++++++++++++++++++++++++
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xlators/protocol/client/src/client-helpers.c | 8 ++++++-
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2 files changed, 43 insertions(+), 1 deletion(-)
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create mode 100644 tests/bugs/protocol/bug-1390914.t
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diff --git a/tests/bugs/protocol/bug-1390914.t b/tests/bugs/protocol/bug-1390914.t
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new file mode 100644
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index 0000000..e3dab92
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--- /dev/null
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+++ b/tests/bugs/protocol/bug-1390914.t
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@@ -0,0 +1,36 @@
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+#!/bin/bash
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+
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+. $(dirname $0)/../../include.rc
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+. $(dirname $0)/../../volume.rc
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+. $(dirname $0)/../../fileio.rc
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+cleanup;
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+
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+#test that fops are not wound on anon-fd when fd is not open on that brick
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+TEST glusterd;
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+TEST pidof glusterd
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+
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+TEST $CLI volume create $V0 replica 3 $H0:$B0/${V0}{1,2,3};
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+TEST $CLI volume set $V0 performance.open-behind off
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+TEST $CLI volume set $V0 diagnostics.client-log-level DEBUG
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+TEST $CLI volume heal $V0 disable
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+TEST $CLI volume start $V0
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+TEST $CLI volume profile $V0 start
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+TEST $GFS -s $H0 --volfile-id=$V0 --direct-io-mode=enable $M0;
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+
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+TEST touch $M0/1
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+TEST kill_brick $V0 $H0 $B0/${V0}1
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+TEST fd_open 200 'w' "$M0/1"
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+TEST $CLI volume start $V0 force
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+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "1" afr_child_up_status $V0 0
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+
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+#lk should only happen on 2 bricks, if there is a bug, it will plant a lock
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+#with anon-fd on first-brick which will never be released because flush won't
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+#be wound below server xlator for anon-fd
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+TEST flock -x -n 200
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+TEST fd_close 200
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+
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+TEST fd_open 200 'w' "$M0/1"
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+#this lock will fail if there is a stale lock
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+TEST flock -x -n 200
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+TEST fd_close 200
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+cleanup;
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diff --git a/xlators/protocol/client/src/client-helpers.c b/xlators/protocol/client/src/client-helpers.c
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index 55e87b3..2dd7106 100644
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--- a/xlators/protocol/client/src/client-helpers.c
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+++ b/xlators/protocol/client/src/client-helpers.c
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@@ -419,7 +419,13 @@ client_get_remote_fd(xlator_t *this, fd_t *fd, int flags, int64_t *remote_fd)
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{
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fdctx = this_fd_get_ctx(fd, this);
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if (!fdctx) {
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- *remote_fd = GF_ANON_FD_NO;
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+ if (fd->anonymous) {
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+ *remote_fd = GF_ANON_FD_NO;
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+ } else {
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+ *remote_fd = -1;
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+ gf_msg_debug(this->name, EBADF, "not a valid fd for gfid: %s",
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+ uuid_utoa(fd->inode->gfid));
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+ }
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} else {
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if (__is_fd_reopen_in_progress(fdctx))
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*remote_fd = -1;
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--
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1.8.3.1
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