Re: RGW core dump at start

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On Sat, Feb 10, 2024 at 10:05:02AM -0500, Vladimir Sigunov wrote:
> Hello Community!
> I would appreciate any help/suggestions with the massive RGWs outage we are
> facing.
> The cluster's overall status is acceptable (HEALTH_WARN because of some pgs
> not scrubbed in time), and the cluster is operational.
> However, all RGWs fail to start with a core dump.
> The only issue I see at the moment is the RGW GC queue (radosgs-admin gc
> list) that contains 600K records.
> I believe this could be the root cause of the issue. When I pause OSD iops
> (ceph osd pause), all RGWs starting with no issues.
> There are no large OMAPs or any other warnings in ceph -s output.

To get you going for the moment, how about disabling the GC threads in
the RGW daemon, and then processing GC async.

Add "rgw_enable_gc_threads=0" to ceph.conf.

After that, testing to see why you get the dump; start up a seperate RGW
instance with debug logging enabled.

Robin Hugh Johnson
Gentoo Linux: Dev, Infra Lead, Foundation President & Treasurer
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