Bug #24336: rgw-multisite: Segmentation fault when use different rgw_data_log_max_shards among zones - rgw - Ceph

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Bug #24336

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rgw-multisite: Segmentation fault when use different rgw_data_log_max_shards among zones

Added by Xinying Song almost 6 years ago. Updated almost 5 years ago.

Status:

Fix Under Review

Priority:

Normal

Assignee:

Casey Bodley

Target version:

% Done:

Source:

Tags:

multisite

Backport:

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

RGW will core when using different rgw_data_log_max_shards config in different zones within the same zonegroup.
log as below:
2018-05-29 18:27:47.560 7fba29dd1700 -1 ** Caught signal (Segmentation fault) *
in thread 7fba29dd1700 thread_name:data-sync

ceph version 13.1.0-490-gfbf0e10 (fbf0e10af014a15a47e92dda53e7d3fce890421e) nautilus (dev)
 1: (()+0x272be0) [0x55f1e3467be0]
 2: (()+0x10330) [0x7fba57f55330]
 3: (std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*)+0xf) [0x7fba4dbf771f]
 4: (RGWOmapAppend::append(std::string const&)+0x57) [0x55f1e351caf7]
 5: (RGWListBucketIndexesCR::operate()+0x9fd) [0x55f1e375017d]
 6: (RGWCoroutinesStack::operate(RGWCoroutinesEnv*)+0x46) [0x55f1e3514d56]
 7: (RGWCoroutinesManager::run(std::list&lt;RGWCoroutinesStack*, std::allocator&lt;RGWCoroutinesStack*&gt; >&)+0x27b) [0x55f1e3517f0b]
 8: (RGWCoroutinesManager::run(RGWCoroutine*)+0x68) [0x55f1e3518d48]
 9: (RGWRemoteDataLog::run_sync(int)+0x1d7) [0x55f1e3737017]
 10: (RGWDataSyncProcessorThread::process()+0x46) [0x55f1e35c2d46]
 11: (RGWRadosThread::Worker::entry()+0x21b) [0x55f1e356820b]
 12: (()+0x8184) [0x7fba57f4d184]
 13: (clone()+0x6d) [0x7fba4d69a03d]
 NOTE: a copy of the executable, or `objdump -rdS &lt;executable&gt;` is needed to interpret this.

The reason is we initialize a omap-manager with the size read from remote zone(rgw_data_log_max_shards), but access it with a shard parameter read from local config(rgw_data_log_max_shrads).