From deaaaec82a0aae1edfeb0688e20498fafa896c83 Mon Sep 17 00:00:00 2001 From: Susant Palai Date: Wed, 19 Feb 2014 05:47:07 +0000 Subject: DHT: Wrong error handling in gf_defrag_migrate_data Problem: Because of the condition (err = op_errno), err was set to zero always and ENOSPC error will be logged always. "dht_check_free_ space" was returning 1 and it was mapped to EPERM in "rebalance_task _completion". Solution: Changed the return value in dht_check_free_space to -1 as in rebalance_task_completion op_ret value -1 is mapped to ENOSPC. And fixed the wrong error condition after syncop_setxattr in gf_defrag_migrate_data. Change-Id: I474ea1bef3b1e34c89814ed0091dd02bd5b63737 BUG: 1054703 Signed-off-by: Susant Palai Reviewed-on: http://review.gluster.org/6727 Tested-by: Gluster Build System Reviewed-by: Raghavendra G Reviewed-by: Vijay Bellur --- xlators/cluster/dht/src/dht-rebalance.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) (limited to 'xlators/cluster/dht/src/dht-rebalance.c') diff --git a/xlators/cluster/dht/src/dht-rebalance.c b/xlators/cluster/dht/src/dht-rebalance.c index 4f78f5203cb..50c5d9d9a5d 100644 --- a/xlators/cluster/dht/src/dht-rebalance.c +++ b/xlators/cluster/dht/src/dht-rebalance.c @@ -454,7 +454,7 @@ __dht_check_free_space (xlator_t *to, xlator_t *from, loc_t *loc, /* this is not a 'failure', but we don't want to consider this as 'success' too :-/ */ - ret = 1; + ret = -1; goto out; } } @@ -465,7 +465,7 @@ check_avail_space: "data movement attempted from node (%s) with " "to node (%s) which does not have required free space" " for %s", from->name, to->name, loc->path); - ret = 1; + ret = -1; goto out; } @@ -1213,7 +1213,6 @@ gf_defrag_migrate_data (xlator_t *this, gf_defrag_info_t *defrag, loc_t *loc, struct timeval end = {0,}; double elapsed = {0,}; struct timeval start = {0,}; - int32_t err = 0; int loglevel = GF_LOG_TRACE; gf_log (this->name, GF_LOG_INFO, "migrate data called on %s", @@ -1380,11 +1379,11 @@ gf_defrag_migrate_data (xlator_t *this, gf_defrag_info_t *defrag, loc_t *loc, ret = syncop_setxattr (this, &entry_loc, migrate_data, 0); - if (ret) { - err = op_errno; + if (ret < 0) { + op_errno = -ret; /* errno is overloaded. See * rebalance_task_completion () */ - if (err != ENOSPC) { + if (op_errno == ENOSPC) { gf_log (this->name, GF_LOG_DEBUG, "migrate-data skipped for %s" " due to space constraints", @@ -1396,10 +1395,7 @@ gf_defrag_migrate_data (xlator_t *this, gf_defrag_info_t *defrag, loc_t *loc, entry_loc.path); defrag->total_failures +=1; } - } - if (ret < 0) { - op_errno = -ret; ret = gf_defrag_handle_migrate_error (op_errno, defrag); @@ -1412,6 +1408,11 @@ gf_defrag_migrate_data (xlator_t *this, gf_defrag_info_t *defrag, loc_t *loc, continue; else if (ret == -1) goto out; + } else if (ret > 0) { + gf_log (this->name, GF_LOG_ERROR, + "migrate-data failed for %s", + entry_loc.path); + defrag->total_failures +=1; } LOCK (&defrag->lock); -- cgit