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From 341d75642ecc4e27bc6fecb56eb98a0ba03d8544 Mon Sep 17 00:00:00 2001
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From: Krutika Dhananjay <kdhananj@redhat.com>
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Date: Mon, 23 Mar 2020 11:47:10 +0530
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Subject: [PATCH 376/379] features/shard: Fix crash during shards cleanup in
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error cases
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Backport of:
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> https://review.gluster.org/c/glusterfs/+/24244
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> Change-Id: I0b49f2b58becd0d8874b3d4b14ff8d92a89d02d5
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> Fixes: #1127
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> Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
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A crash is seen during a reattempt to clean up shards in background
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upon remount. And this happens even on remount (which means a remount
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is no workaround for the crash).
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In such a situation, the in-memory base inode object will not be
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existent (new process, non-existent base shard).
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So local->resolver_base_inode will be NULL.
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In the event of an error (in this case, of space running out), the
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process would crash at the time of logging the error in the following line -
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gf_msg(this->name, GF_LOG_ERROR, local->op_errno, SHARD_MSG_FOP_FAILED,
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"failed to delete shards of %s",
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uuid_utoa(local->resolver_base_inode->gfid));
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Fixed that by using local->base_gfid as the source of gfid when
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local->resolver_base_inode is NULL.
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Change-Id: I0b49f2b58becd0d8874b3d4b14ff8d92a89d02d5
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BUG: 1836233
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Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/200689
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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/features/shard/src/shard.c | 11 +++++++++--
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1 file changed, 9 insertions(+), 2 deletions(-)
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diff --git a/xlators/features/shard/src/shard.c b/xlators/features/shard/src/shard.c
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index 9ed597b..ee38ed2 100644
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--- a/xlators/features/shard/src/shard.c
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+++ b/xlators/features/shard/src/shard.c
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@@ -2729,13 +2729,20 @@ int shard_unlink_shards_do(call_frame_t *frame, xlator_t *this, inode_t *inode);
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int shard_post_lookup_shards_unlink_handler(call_frame_t *frame,
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xlator_t *this) {
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shard_local_t *local = NULL;
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+ uuid_t gfid = {
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+ 0,
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+ };
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local = frame->local;
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+ if (local->resolver_base_inode)
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+ gf_uuid_copy(gfid, local->resolver_base_inode->gfid);
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+ else
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+ gf_uuid_copy(gfid, local->base_gfid);
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+
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if ((local->op_ret < 0) && (local->op_errno != ENOENT)) {
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gf_msg(this->name, GF_LOG_ERROR, local->op_errno, SHARD_MSG_FOP_FAILED,
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- "failed to delete shards of %s",
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- uuid_utoa(local->resolver_base_inode->gfid));
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+ "failed to delete shards of %s", uuid_utoa(gfid));
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return 0;
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}
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local->op_ret = 0;
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--
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1.8.3.1
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