Yes, some osd servers mount cephfs
Yan, Zheng <uker...@gmail.com>于2018年8月7日 周二19:12写道：
> did you mount cephfs on the same machines that run ceph-osd?
>
> On Tue, Aug 7, 2018 at 5:14 PM Zhenshi Zhou <deader...@gmail.com> wrote:
> >
> > Hi Burkhard,
> > Files located in /sys/kernel/debug/ceph/<some id> are all new files
> generated after I reboot the server.
> > The clients were in blacklist and I manully remove them from the
> blacklist. But the clients hung still.
> >
> > Thanks
> >
> > Burkhard Linke <burkhard.li...@computational.bio.uni-giessen.de>
> 于2018年8月7日周二 下午4:54写道：
> >>
> >> Hi,
> >>
> >>
> >> you are using the kernel implementation of CephFS. In this case some
> >> information can be retrieved from the /sys/kernel/debug/ceph/<some id>
> >> directory. Especially the mdsc, monc and osdc files are important, since
> >> they contain pending operations on mds, mon and osds.
> >>
> >>
> >> We have a similar problem in our setup. If a MDS failover happens, some
> >> clients (like 1 in 100 clients) do not react to the MDS map change and
> >> keep on trying to contact the old MDS. In this case the msdc file in the
> >> above mentioned directory lists from outstanding requests to the old
> MDS.
> >>
> >>
> >> I would propose to start by having a look at these files and also at the
> >> ceph client blacklist ('ceph osd blacklist ls').
> >>
> >>
> >> Regards,
> >>
> >> Burkhard
> >>
> >>
> >> _______________________________________________
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> >> ceph-users@lists.ceph.com
> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >
> > _______________________________________________
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> > ceph-users@lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
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