On Fri, Sep 18, 2015 at 9:48 AM, Abhishek L
<abhishek.lekshmanan@xxxxxxxxx> wrote:
> Redirecting to ceph-devel, where such a question might have a better
> chance of a reply.
>
> On Fri, Sep 18, 2015 at 4:03 AM, <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);
>> }
>> :
>> }
What is your kernel version?
There is no mention of rbd map/unmap in the pseudo code you provided.
How are you mapping/unmapping those rbd images? More details or the
script itself would be nice to see.
Thanks,
Ilya
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