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From fb1d503791c874296afab0cd7be59b6865340d72 Mon Sep 17 00:00:00 2001
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From: Xavi Hernandez <jahernan@redhat.com>
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Date: Wed, 25 Sep 2019 11:56:35 +0200
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Subject: [PATCH 302/302] cluster/ec: prevent filling shd log with "table not
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found" messages
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When self-heal daemon receives an inodelk contention notification, it tries
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to locate the related inode using inode_find() and the inode table owned by
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top-most xlator, which in this case doesn't have any inode table. This causes
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many messages to be logged by inode_find() function because the inode table
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passed is NULL.
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This patch prevents this by making sure the inode table is not NULL before
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calling inode_find().
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Upstream patch:
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> Change-Id: I8d001bd180aaaf1521ba40a536b097fcf70c991f
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> Upstream patch link: https://review.gluster.org/c/glusterfs/+/23481
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> Fixes: bz#1755344
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> Signed-off-by: Xavi Hernandez <jahernan@redhat.com>
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Change-Id: I8d001bd180aaaf1521ba40a536b097fcf70c991f
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BUG: 1754790
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Signed-off-by: Xavi Hernandez <jahernan@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/182207
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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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xlators/cluster/ec/src/ec.c | 15 +++++++++++++--
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1 file changed, 13 insertions(+), 2 deletions(-)
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diff --git a/xlators/cluster/ec/src/ec.c b/xlators/cluster/ec/src/ec.c
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index 19094c4..3f31c74 100644
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--- a/xlators/cluster/ec/src/ec.c
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+++ b/xlators/cluster/ec/src/ec.c
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@@ -463,6 +463,7 @@ ec_upcall(ec_t *ec, struct gf_upcall *upcall)
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struct gf_upcall_cache_invalidation *ci = NULL;
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struct gf_upcall_inodelk_contention *lc = NULL;
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inode_t *inode;
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+ inode_table_t *table;
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switch (upcall->event_type) {
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case GF_UPCALL_CACHE_INVALIDATION:
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@@ -476,8 +477,18 @@ ec_upcall(ec_t *ec, struct gf_upcall *upcall)
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/* The lock is not owned by EC, ignore it. */
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return _gf_true;
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}
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- inode = inode_find(((xlator_t *)ec->xl->graph->top)->itable,
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- upcall->gfid);
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+ table = ((xlator_t *)ec->xl->graph->top)->itable;
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+ if (table == NULL) {
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+ /* Self-heal daemon doesn't have an inode table on the top
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+ * xlator because it doesn't need it. In this case we should
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+ * use the inode table managed by EC itself where all inodes
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+ * being healed should be present. However self-heal doesn't
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+ * use eager-locking and inodelk's are already released as
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+ * soon as possible. In this case we can safely ignore these
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+ * notifications. */
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+ return _gf_false;
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+ }
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+ inode = inode_find(table, upcall->gfid);
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/* If inode is not found, it means that it's already released,
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* so we can ignore it. Probably it has been released and
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* destroyed while the contention notification was being sent.
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--
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1.8.3.1
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