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From a7e4ed507c3332f896fb4822cfc3f98731c11785 Mon Sep 17 00:00:00 2001
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From: Ravishankar N <ravishankar@redhat.com>
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Date: Mon, 16 Apr 2018 15:38:34 +0530
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Subject: [PATCH 228/236] afr: fixes to afr-eager locking
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Upstream patch: https://review.gluster.org/#/c/19879/
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1. If pre-op fails on all bricks,set lock->release to true in
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afr_handle_lock_acquire_failure so that the GF_ASSERT in afr_unlock() does not
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crash.
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2. Added a missing 'return' after handling pre-op failure in
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afr_transaction_perform_fop(), fixing a use-after-free issue.
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Change-Id: If0627a9124cb5d6405037cab3f17f8325eed2d83
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BUG: 1554291
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Signed-off-by: Ravishankar N <ravishankar@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/136228
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Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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---
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tests/bugs/replicate/bug-1561129-enospc.t | 24 ++++++++++++++++++++++++
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xlators/cluster/afr/src/afr-transaction.c | 2 ++
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2 files changed, 26 insertions(+)
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create mode 100644 tests/bugs/replicate/bug-1561129-enospc.t
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diff --git a/tests/bugs/replicate/bug-1561129-enospc.t b/tests/bugs/replicate/bug-1561129-enospc.t
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new file mode 100644
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index 0000000..1b402fc
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--- /dev/null
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+++ b/tests/bugs/replicate/bug-1561129-enospc.t
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@@ -0,0 +1,24 @@
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+#!/bin/bash
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+#Tests that sequential write workload doesn't lead to FSYNCs
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+
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+. $(dirname $0)/../../include.rc
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+. $(dirname $0)/../../volume.rc
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+
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+cleanup;
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+
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+TEST truncate -s 128M $B0/xfs_image
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+TEST mkfs.xfs -f $B0/xfs_image
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+TEST mkdir $B0/bricks
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+TEST mount -t xfs -o loop $B0/xfs_image $B0/bricks
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+
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+TEST glusterd
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+TEST pidof glusterd
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+TEST $CLI volume create $V0 replica 3 $H0:$B0/bricks/brick{0,1,3}
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+TEST $CLI volume start $V0
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+TEST $GFS --volfile-id=$V0 --volfile-server=$H0 $M0;
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+
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+# Write 50MB of data, which will try to consume 50x3=150MB on $B0/bricks.
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+# Before that, we hit ENOSPC in pre-op cbk, which should not crash the mount.
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+TEST ! dd if=/dev/zero of=$M0/a bs=1M count=50
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+TEST stat $M0/a
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+cleanup;
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diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c
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index 88dc821..0506a78 100644
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--- a/xlators/cluster/afr/src/afr-transaction.c
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+++ b/xlators/cluster/afr/src/afr-transaction.c
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@@ -285,6 +285,7 @@ afr_handle_lock_acquire_failure (afr_local_t *local, gf_boolean_t locked)
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INIT_LIST_HEAD (&shared);
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LOCK (&local->inode->lock);
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{
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+ lock->release = _gf_true;
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list_splice_init (&lock->waiting, &shared);
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}
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UNLOCK (&local->inode->lock);
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@@ -510,6 +511,7 @@ afr_transaction_perform_fop (call_frame_t *frame, xlator_t *this)
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priv->child_count);
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if (failure_count == priv->child_count) {
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afr_handle_lock_acquire_failure (local, _gf_true);
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+ return 0;
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} else {
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lock = &local->inode_ctx->lock[local->transaction.type];
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LOCK (&local->inode->lock);
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--
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1.8.3.1
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