On Mon, Jul 18, 2016 at 4:41 AM, Василий Ангапов <angapov@xxxxxxxxx> wrote: > Guys, > > This bug is hitting me constantly, may be once per several days. Does > anyone know is there a solution already? I see there is a fix available, and am waiting for a backport to a longterm kernel: https://lkml.org/lkml/2016/7/12/919 https://lkml.org/lkml/2016/7/12/297 -- Alex Gorbachev Storcium > > 2016-07-05 11:47 GMT+03:00 Nick Fisk <nick@xxxxxxxxxx>: >>> -----Original Message----- >>> From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of >>> Alex Gorbachev >>> Sent: 04 July 2016 20:50 >>> To: Campbell Steven <casteven@xxxxxxxxx> >>> Cc: ceph-users <ceph-users@xxxxxxxxxxxxxx>; Tim Bishop <tim- >>> lists@xxxxxxxxxxx> >>> Subject: Re: Is anyone seeing iissues with >>> task_numa_find_cpu? >>> >>> On Wed, Jun 29, 2016 at 5:41 AM, Campbell Steven <casteven@xxxxxxxxx> >>> wrote: >>> > Hi Alex/Stefan, >>> > >>> > I'm in the middle of testing 4.7rc5 on our test cluster to confirm >>> > once and for all this particular issue has been completely resolved by >>> > Peter's recent patch to sched/fair.c refereed to by Stefan above. For >>> > us anyway the patches that Stefan applied did not solve the issue and >>> > neither did any 4.5.x or 4.6.x released kernel thus far, hopefully it >>> > does the trick for you. We could get about 4 hours uptime before >>> > things went haywire for us. >>> > >>> > It's interesting how it seems the CEPH workload triggers this bug so >>> > well as it's quite a long standing issue that's only just been >>> > resolved, another user chimed in on the lkml thread a couple of days >>> > ago as well and again his trace had ceph-osd in it as well. >>> > >>> > https://lkml.org/lkml/headers/2016/6/21/491 >>> > >>> > Campbell >>> >>> Campbell, any luck with testing 4.7rc5? rc6 came out just now, and I am >>> having trouble booting it on an ubuntu box due to some other unrelated >>> problem. So dropping to kernel 4.2.0 for now, which does not seem to have >>> this load related problem. >>> >>> I looked at the fair.c code in kernel source tree 4.4.14 and it is quite >> different >>> than Peter's patch (assuming 4.5.x source), so the patch does not apply >>> cleanly. Maybe another 4.4.x kernel will get the update. >> >> I put in a new 16.04 node yesterday and went straight to 4.7.rc6. It's been >> backfilling for just under 24 hours now with no drama. Disks are set to use >> CFQ. >> >>> >>> Thanks, >>> Alex >>> >>> >>> >>> > >>> > On 29 June 2016 at 18:29, Stefan Priebe - Profihost AG >>> > <s.priebe@xxxxxxxxxxxx> wrote: >>> >> >>> >> Am 29.06.2016 um 04:30 schrieb Alex Gorbachev: >>> >>> Hi Stefan, >>> >>> >>> >>> On Tue, Jun 28, 2016 at 1:46 PM, Stefan Priebe - Profihost AG >>> >>> <s.priebe@xxxxxxxxxxxx> wrote: >>> >>>> Please be aware that you may need even more patches. Overall this >>> >>>> needs 3 patches. Where the first two try to fix a bug and the 3rd >>> >>>> one fixes the fixes + even more bugs related to the scheduler. I've >>> >>>> no idea on which patch level Ubuntu is. >>> >>> >>> >>> Stefan, would you be able to please point to the other two patches >>> >>> beside https://lkml.org/lkml/diff/2016/6/22/102/1 ? >>> >> >>> >> Sorry sure yes: >>> >> >>> >> 1. 2b8c41daba32 ("sched/fair: Initiate a new task's util avg to a >>> >> bounded value") >>> >> >>> >> 2.) 40ed9cba24bb7e01cc380a02d3f04065b8afae1d ("sched/fair: Fix >>> >> post_init_entity_util_avg() serialization") >>> >> >>> >> 3.) the one listed at lkml. >>> >> >>> >> Stefan >>> >> >>> >>> >>> >>> Thank you, >>> >>> Alex >>> >>> >>> >>>> >>> >>>> Stefan >>> >>>> >>> >>>> Excuse my typo sent from my mobile phone. >>> >>>> >>> >>>> Am 28.06.2016 um 17:59 schrieb Tim Bishop <tim-lists@xxxxxxxxxxx>: >>> >>>> >>> >>>> Yes - I noticed this today on Ubuntu 16.04 with the default kernel. >>> >>>> No useful information to add other than it's not just you. >>> >>>> >>> >>>> Tim. >>> >>>> >>> >>>> On Tue, Jun 28, 2016 at 11:05:40AM -0400, Alex Gorbachev wrote: >>> >>>> >>> >>>> After upgrading to kernel 4.4.13 on Ubuntu, we are seeing a few of >>> >>>> >>> >>>> these issues where an OSD would fail with the stack below. I >>> >>>> logged a >>> >>>> >>> >>>> bug at https://bugzilla.kernel.org/show_bug.cgi?id=121101 and there >>> >>>> is >>> >>>> >>> >>>> a similar description at https://lkml.org/lkml/2016/6/22/102, but >>> >>>> the >>> >>>> >>> >>>> odd part is we have turned off CFQ and blk-mq/scsi-mq and are using >>> >>>> >>> >>>> just the noop scheduler. >>> >>>> >>> >>>> >>> >>>> Does the ceph kernel code somehow use the fair scheduler code >>> block? >>> >>>> >>> >>>> >>> >>>> Thanks >>> >>>> >>> >>>> -- >>> >>>> >>> >>>> Alex Gorbachev >>> >>>> >>> >>>> Storcium >>> >>>> >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.684974] CPU: 30 PID: >>> >>>> >>> >>>> 10403 Comm: ceph-osd Not tainted 4.4.13-040413-generic >>> >>>> #201606072354 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.684991] Hardware name: >>> >>>> >>> >>>> Supermicro X9DRi-LN4+/X9DR3-LN4+/X9DRi-LN4+/X9DR3-LN4+, BIOS >>> 3.2 >>> >>>> >>> >>>> 03/04/2015 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685009] task: >>> >>>> >>> >>>> ffff880f79df8000 ti: ffff880f79fb8000 task.ti: ffff880f79fb8000 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685024] RIP: >>> >>>> >>> >>>> 0010:[<ffffffff810b416e>] [<ffffffff810b416e>] >>> >>>> >>> >>>> task_numa_find_cpu+0x22e/0x6f0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685051] RSP: >>> >>>> >>> >>>> 0018:ffff880f79fbb818 EFLAGS: 00010206 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685063] RAX: >>> >>>> >>> >>>> 0000000000000000 RBX: ffff880f79fbb8b8 RCX: 0000000000000000 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685076] RDX: >>> >>>> >>> >>>> 0000000000000000 RSI: 0000000000000000 RDI: ffff8810352d4800 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685107] RBP: >>> >>>> >>> >>>> ffff880f79fbb880 R08: 00000001020cf87c R09: 0000000000ff00ff >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685150] R10: >>> >>>> >>> >>>> 0000000000000009 R11: 0000000000000006 R12: ffff8807c3adc4c0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685194] R13: >>> >>>> >>> >>>> 0000000000000006 R14: 000000000000033e R15: fffffffffffffec7 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685238] FS: >>> >>>> >>> >>>> 00007f30e46b8700(0000) GS:ffff88105f580000(0000) >>> >>>> >>> >>>> knlGS:0000000000000000 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685283] CS: 0010 DS: >>> >>>> >>> >>>> 0000 ES: 0000 CR0: 0000000080050033 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685310] CR2: >>> >>>> >>> >>>> 000000001321a000 CR3: 0000000853598000 CR4: 00000000000406e0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685354] Stack: >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685374] >>> >>>> >>> >>>> ffffffff813d050f 000000000000000d 0000000000000045 ffff880f79df8000 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685426] >>> >>>> >>> >>>> 000000000000033f 0000000000000000 0000000000016b00 >>> 000000000000033f >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685477] >>> >>>> >>> >>>> ffff880f79df8000 ffff880f79fbb8b8 00000000000001f4 0000000000000054 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685528] Call Trace: >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685555] >>> >>>> >>> >>>> [<ffffffff813d050f>] ? cpumask_next_and+0x2f/0x40 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685584] >>> >>>> >>> >>>> [<ffffffff810b4a6e>] task_numa_migrate+0x43e/0x9b0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685613] >>> >>>> >>> >>>> [<ffffffff810b3acc>] ? update_cfs_shares+0xbc/0x100 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685642] >>> >>>> >>> >>>> [<ffffffff810b5059>] numa_migrate_preferred+0x79/0x80 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685672] >>> >>>> >>> >>>> [<ffffffff810b9b94>] task_numa_fault+0x7f4/0xd40 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685700] >>> >>>> >>> >>>> [<ffffffff813d9634>] ? timerqueue_del+0x24/0x70 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685729] >>> >>>> >>> >>>> [<ffffffff810b9205>] ? should_numa_migrate_memory+0x55/0x130 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685762] >>> >>>> >>> >>>> [<ffffffff811bd590>] handle_mm_fault+0xbc0/0x1820 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685793] >>> >>>> >>> >>>> [<ffffffff810edc00>] ? __hrtimer_init+0x90/0x90 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685822] >>> >>>> >>> >>>> [<ffffffff810c211d>] ? remove_wait_queue+0x4d/0x60 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685853] >>> >>>> >>> >>>> [<ffffffff8121e20a>] ? poll_freewait+0x4a/0xa0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685882] >>> >>>> >>> >>>> [<ffffffff8106a537>] __do_page_fault+0x197/0x400 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685910] >>> >>>> >>> >>>> [<ffffffff8106a7c2>] do_page_fault+0x22/0x30 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685939] >>> >>>> >>> >>>> [<ffffffff8180a878>] page_fault+0x28/0x30 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685967] >>> >>>> >>> >>>> [<ffffffff813e4c5f>] ? copy_page_to_iter_iovec+0x5f/0x300 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.685997] >>> >>>> >>> >>>> [<ffffffff810b2795>] ? select_task_rq_fair+0x625/0x700 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686026] >>> >>>> >>> >>>> [<ffffffff813e4f16>] copy_page_to_iter+0x16/0xa0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686056] >>> >>>> >>> >>>> [<ffffffff816f02ad>] skb_copy_datagram_iter+0x14d/0x280 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686087] >>> >>>> >>> >>>> [<ffffffff8174a503>] tcp_recvmsg+0x613/0xbe0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686117] >>> >>>> >>> >>>> [<ffffffff8177844e>] inet_recvmsg+0x7e/0xb0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686146] >>> >>>> >>> >>>> [<ffffffff816e0d3b>] sock_recvmsg+0x3b/0x50 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686173] >>> >>>> >>> >>>> [<ffffffff816e0f91>] SYSC_recvfrom+0xe1/0x160 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686202] >>> >>>> >>> >>>> [<ffffffff810f36f5>] ? ktime_get_ts64+0x45/0xf0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686230] >>> >>>> >>> >>>> [<ffffffff816e239e>] SyS_recvfrom+0xe/0x10 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686259] >>> >>>> >>> >>>> [<ffffffff818086f2>] entry_SYSCALL_64_fastpath+0x16/0x71 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686287] Code: 55 b0 >>> >>>> 4c >>> >>>> >>> >>>> 89 f7 e8 53 cd ff ff 48 8b 55 b0 49 8b 4e 78 48 8b 82 d8 01 00 00 >>> >>>> 48 >>> >>>> >>> >>>> 83 c1 01 31 d2 49 0f af 86 b0 00 00 00 4c 8b 73 78 <48> f7 f1 48 8b >>> >>>> 4b >>> >>>> >>> >>>> 20 49 89 c0 48 29 c1 48 8b 45 d0 4c 03 43 48 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686512] RIP >>> >>>> >>> >>>> [<ffffffff810b416e>] task_numa_find_cpu+0x22e/0x6f0 >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686544] RSP >>> >>>> <ffff880f79fbb818> >>> >>>> >>> >>>> Jun 28 09:46:41 roc04r-sca090 kernel: [137912.686896] ---[ end >>> >>>> trace >>> >>>> >>> >>>> 544cb9f68cb55c93 ]--- >>> >>>> >>> >>>> Jun 28 09:52:15 roc04r-sca090 kernel: [138246.669713] mpt2sas_cm0: >>> >>>> >>> >>>> log_info(0x30030101): originator(IOP), code(0x03), sub_code(0x0101) >>> >>>> >>> >>>> Jun 28 09:55:01 roc0 >>> >>>> >>> >>>> _______________________________________________ >>> >>>> >>> >>>> ceph-users mailing list >>> >>>> >>> >>>> ceph-users@xxxxxxxxxxxxxx >>> >>>> >>> >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >>>> >>> >>>> >>> >>>> >>> >>>> Tim. >>> >>>> >>> >>>> -- >>> >>>> Tim Bishop >>> >>>> http://www.bishnet.net/tim/ >>> >>>> PGP Key: 0x6C226B37FDF38D55 >>> >>>> >>> >>>> _______________________________________________ >>> >>>> ceph-users mailing list >>> >>>> ceph-users@xxxxxxxxxxxxxx >>> >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >> _______________________________________________ >>> >> ceph-users mailing list >>> >> ceph-users@xxxxxxxxxxxxxx >>> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> _______________________________________________ >>> ceph-users mailing list >>> ceph-users@xxxxxxxxxxxxxx >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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