Hi Bart,
This email belongs in ceph-users (CC'ed), or maybe ceph-devel. You're
unlikely to get answers to this on ceph-community.
-Joao
On 09/17/2015 11:33 PM, bart.bartel@xxxxxxxxxxx wrote:
> I'm running in a 3-node cluster and doing osd/rbd creation and deletion,
> and ran across this WARN
> Note, it only happened once (on one rbd add) after approximately 500
> cycles of the test, but was wondering if
> someone can explain to me why this warning would be happening, and how I
> can prevent it.
>
> Here is what my test script is doing:
>
> while(1):
> create 5 ceph pools - sleep 2 between each pool create
> sleep 5
> create 5 ceph volumes - sleep 2 between each pool create
> sleep 5
> delete 5 ceph volumes - sleep 2 between each pool create
> sleep 5
> delete 5 ceph pools - sleep 2 between each pool create
> sleep 5
>
>
> 333940 Sep 17 00:31:54 10.0.41.9 [18372.272771] Call Trace:
> 333941 Sep 17 00:31:54 10.0.41.9 [18372.273489] [<ffffffff817d8d3e>]
> dump_stack+0x45/0x57
> 333942 Sep 17 00:31:54 10.0.41.9 [18372.274226] [<ffffffff81078067>]
> warn_slowpath_common+0x97/0xe0
> 333943 Sep 17 00:31:54 10.0.41.9 [18372.274923] [<ffffffff810780ca>]
> warn_slowpath_null+0x1a/0x20
> 333944 Sep 17 00:31:54 10.0.41.9 [18372.275635] [<ffffffffc0f60eec>]
> __kick_osd_requests+0x1dc/0x240 [libceph]
> 333945 Sep 17 00:31:54 10.0.41.9 [18372.276305] [<ffffffffc0f60fa7>]
> osd_reset+0x57/0xa0 [libceph]
> 333946 Sep 17 00:31:54 10.0.41.9 [18372.276962] [<ffffffffc0f59162>]
> con_work+0x112/0x290 [libceph]
> 333947 Sep 17 00:31:54 10.0.41.9 [18372.277608] [<ffffffff810909c4>]
> process_one_work+0x144/0x470
> 333948 Sep 17 00:31:54 10.0.41.9 [18372.278247] [<ffffffff8109140e>]
> worker_thread+0x11e/0x450
> 333949 Sep 17 00:31:54 10.0.41.9 [18372.278880] [<ffffffff810912f0>] ?
> create_worker+0x1f0/0x1f0
> 333950 Sep 17 00:31:54 10.0.41.9 [18372.279543] [<ffffffff81097179>]
> kthread+0xc9/0xe0
> 333951 Sep 17 00:31:54 10.0.41.9 [18372.280174] [<ffffffff810970b0>] ?
> flush_kthread_worker+0x90/0x90
> 333952 Sep 17 00:31:54 10.0.41.9 [18372.280803] [<ffffffff817e5998>]
> ret_from_fork+0x58/0x90
> 333953 Sep 17 00:31:54 10.0.41.9 [18372.281430] [<ffffffff810970b0>] ?
> flush_kthread_worker+0x90/0x90
>
> static void __kick_osd_requests(struct ceph_osd_client *osdc,
> struct ceph_osd *osd)
> {
> :
> list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
> r_linger_osd_item) {
> WARN_ON(!list_empty(&req->r_req_lru_item));
> __kick_linger_request(req);
> }
> :
> }
>
> - Bart
>
>
>
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