Yeah, there's a heartbeat system and the messenger is reliable delivery. -Sam
On Mon, Nov 2, 2015 at 5:41 PM, yangruifeng.09...@h3c.com <yangruifeng.09...@h3c.com> wrote: > I will try my best to get the detailed log. > In the current version, we can ensure the messages that are related to > peering is correctly received by peers? > > thanks > Ruifeng Yang. > > -----邮件原件----- > 发件人: Samuel Just [mailto:sj...@redhat.com] > 发送时间: 2015年11月3日 9:28 > 收件人: yangruifeng 09209 (RD) > 抄送: chenxiaowei 11245 (RD); Sage Weil (sw...@redhat.com); > ceph-devel@vger.kernel.org > 主题: Re: 答复: 答复: 答复: 答复: another peering stuck caused by net problem. > > Temporary network failures should be handled correctly. The best solution is > to actually fix that bug then. Capture logging on all involved osds while it > is hung and open a bug: > > debug osd = 20 > debug filestore = 20 > debug ms = 1 > -Sam > > On Mon, Nov 2, 2015 at 5:24 PM, yangruifeng.09...@h3c.com > <yangruifeng.09...@h3c.com> wrote: >> a unknown reason problem, which cause pg stuck in peering, may be a >> temporary failure network failure or other bug. >> BUT it can be solved by *manual* 'ceph osd down <osdid>' >> >> -----邮件原件----- >> 发件人: ceph-devel-ow...@vger.kernel.org >> [mailto:ceph-devel-ow...@vger.kernel.org] 代表 Samuel Just >> 发送时间: 2015年11月3日 9:12 >> 收件人: yangruifeng 09209 (RD) >> 抄送: chenxiaowei 11245 (RD); Sage Weil (sw...@redhat.com); >> ceph-devel@vger.kernel.org >> 主题: Re: 答复: 答复: 答复: another peering stuck caused by net problem. >> >> The problem is that peering shouldn't hang for no reason. If you are >> seeing peering hang for a long time either >> 1) you are hitting a peering bug which we need to track down and fix >> 2) peering actually cannot make progress. >> >> In case 1, it can be nice to have a work around to force peering to restart >> and avoid the bug. However, case 2 would not be helped by restarting >> peering, you'd just end up in the same place. If you did it based on a >> timeout, you'd just increase load by a ton when in that situation. What >> problem are you trying to solve? >> -Sam >> >> On Mon, Nov 2, 2015 at 5:05 PM, yangruifeng.09...@h3c.com >> <yangruifeng.09...@h3c.com> wrote: >>> ok. >>> >>> thanks >>> Ruifeng Yang >>> >>> -----邮件原件----- >>> 发件人: Samuel Just [mailto:sj...@redhat.com] >>> 发送时间: 2015年11月3日 9:03 >>> 收件人: yangruifeng 09209 (RD) >>> 抄送: chenxiaowei 11245 (RD); Sage Weil (sw...@redhat.com) >>> 主题: Re: 答复: 答复: another peering stuck caused by net problem. >>> >>> Would it be ok if I reply to the list as well? >>> -Sam >>> >>> On Mon, Nov 2, 2015 at 4:37 PM, yangruifeng.09...@h3c.com >>> <yangruifeng.09...@h3c.com> wrote: >>>> the cluster is maybe always peering in same exceptional cases, but >>>> it can return to normal by *manual* 'ceph osd down <osdid>', this is >>>> not convenient in a production environment, and against the concept of >>>> rados. >>>> add a timeout mechanism to kick it, or kick it when io hang, maybe >>>> reasonable? >>>> >>>> thanks, >>>> Ruifeng Yang >>>> >>>> -----邮件原件----- >>>> 发件人: Samuel Just [mailto:sj...@redhat.com] >>>> 发送时间: 2015年11月3日 2:21 >>>> 收件人: yangruifeng 09209 (RD) >>>> 抄送: chenxiaowei 11245 (RD); Sage Weil (sw...@redhat.com) >>>> 主题: Re: 答复: another peering stuck caused by net problem. >>>> >>>> I mean issue 'ceph osd down <osdid>' for the primary on the pg. But that >>>> only causes peering to restart. If peering stalled previously, it'll >>>> probably stall again. What are you trying to accomplish? >>>> -Sam >>>> >>>> On Fri, Oct 30, 2015 at 5:51 PM, yangruifeng.09...@h3c.com >>>> <yangruifeng.09...@h3c.com> wrote: >>>>> do you mean restart primary osd? or any other command？ >>>>> >>>>> thanks >>>>> Ruifeng Yang >>>>> >>>>> -----邮件原件----- >>>>> 发件人: Samuel Just [mailto:sj...@redhat.com] >>>>> 发送时间: 2015年10月30日 23:07 >>>>> 收件人: chenxiaowei 11245 (RD) >>>>> 抄送: Sage Weil (sw...@redhat.com); yangruifeng 09209 (RD) >>>>> 主题: Re: another peering stuck caused by net problem. >>>>> >>>>> How would that help? As a way to work around a possible bug? You can >>>>> accomplish pretty much the same thing by setting the primary down. >>>>> -Sam >>>>> >>>>> On Wed, Oct 28, 2015 at 8:22 PM, Chenxiaowei <chen.xiao...@h3c.com> wrote: >>>>>> Hi, Samuel&Sage: >>>>>> I am cxwshawn from H3C(belong to HP), the pg peering stuck >>>>>> problem is a serious problem especially under the production >>>>>> environment, So here we came up two solutions: >>>>>> if state Peering stuck too long, we can check timeout >>>>>> exceeds to force transition from Peering to Reset state, Or we can add a >>>>>> command line to force one pg from Peering stuck to Reset state. >>>>>> >>>>>> What's your advice? Wish your reply >>>>>> >>>>>> Yours >>>>>> shawn from Beijing, China. >>>>>> >>>>>> ------------------------------------------------------------------ >>>>>> - >>>>>> - >>>>>> - >>>>>> - >>>>>> --------------------------------------------------------------- >>>>>> 本邮件及其附件含有杭州华三通信技术有限公司的保密信息，仅限于发送给上面地址中列出 >>>>>> 的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、 >>>>>> 或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本 >>>>>> 邮件！ >>>>>> This e-mail and its attachments contain confidential information >>>>>> from H3C, which is intended only for the person or entity whose >>>>>> address is listed above. Any use of the information contained >>>>>> herein in any way (including, but not limited to, total or partial >>>>>> disclosure, reproduction, or dissemination) by persons other than >>>>>> the intended >>>>>> recipient(s) is prohibited. If you receive this e-mail in error, >>>>>> please notify the sender by phone or email immediately and delete it! >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" >> in the body of a message to majord...@vger.kernel.org More majordomo >> info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
