After reading the assembly again with a colleague I can confirm that in my case the target is also set to #MAX-1 and then I have full nodes so it's very likely that I'm hitting the same problem that you reported. I've also hit it twice now on the same server in a 24 hour period. I will apply your patch and see if this helps. Mike, Joe Could you take a look at Dennis' patches and express some opinions on the issue? On Tue, Oct 20, 2015 at 5:39 AM, Dennis Yang <shinrairis@xxxxxxxxx> wrote: > Hi, > > After I analyzed the metadata of this case couple months ago, I find > out that there is another possible bug which might trigger this > assertion fail in shift(). I had posted a patch two months ago on the > list to explain and fix this issue. Could you help reviewing this? > > https://www.redhat.com/archives/dm-devel/2015-August/msg00155.html > > Thanks, > Dennis > > 2015-10-20 0:02 GMT+08:00 Mike Snitzer <snitzer@xxxxxxxxxx>: >> On Mon, Oct 19 2015 at 6:45am -0400, >> Nikolay Borisov <n.borisov@xxxxxxxxxxxxxx> wrote: >> >>> >>> >>> On 10/19/2015 01:30 PM, Joe Thornber wrote: >>> > On Mon, Oct 19, 2015 at 12:16:53PM +0300, Nikolay Borisov wrote: >>> >> [Resending as I had typo in the dm-devel's mailing list the first time] >>> >> >>> >> Hello, >>> >> >>> >> Using kernel 3.12.47 I've hit the aforementioned issue. I'd also like >>> >> to say that this kernel does include Dennis Yang's patch which >>> >> supposedly fixes a similar issue >>> >> (https://www.redhat.com/archives/dm-devel/2015-May/msg00113.html). >>> > >>> > >>> > Did you apply this patch or my corrected patch? >>> > >>> > https://www.redhat.com/archives/dm-devel/2015-May/msg00123.html >>> >>> I haven't applied anything per-se, rather this stable kernel does >>> include your corrected patch. So yes, the correct fix for the issue >>> reported by Dennis is included, yet apparently the same issue is >>> manifesting again. >> >> Are you using metadata snapshots at all? >> Do you have this commit applied? >> >> b0dc3c8bc15 ("dm btree: add ref counting ops for the leaves of top level btrees") >> >> -- >> dm-devel mailing list >> dm-devel@xxxxxxxxxx >> https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
