On 2014.06.23 10:01, Udo Lembke wrote:
> Hi,
> AFAIK should an "ceph osd down osd.29" marked osd.29 as down.
> But what is to do if this don't happens?
>
> I got following:
> root@ceph-02:~# ceph osd down osd.29
> marked down osd.29.
>
> root@ceph-02:~# ceph osd tree
> 2014-06-23 08:51:00.588042 7f15747f5700  0 -- :/1018258 >>
> 172.20.2.11:6789/0 pipe(0x7f157002a370 sd=3 :0 s=1 pgs=0 cs=0 l=1
> c=0x7f157002a5d0).fault
> # id    weight  type name       up/down reweight
> -1      203.8   root default
> -3      203.8           rack unknownrack
> -2      29.12                   host ceph-01
> 52      3.64                            osd.52  up      1
> 53      3.64                            osd.53  up      1
> 54      3.64                            osd.54  up      1
> 55      3.64                            osd.55  up      1
> 56      3.64                            osd.56  up      1
> 57      3.64                            osd.57  up      1
> 58      3.64                            osd.58  up      1
> 59      3.64                            osd.59  up      1
> -4      43.68                   host ceph-02
> 8       3.64                            osd.8   up      1
> 10      3.64                            osd.10  up      1
> 9       3.64                            osd.9   up      0.8936
> 11      3.64                            osd.11  up      0.9022
> 12      3.64                            osd.12  up      0.8664
> 13      3.64                            osd.13  up      0.9084
> 14      3.64                            osd.14  up      0.8097
> 15      3.64                            osd.15  up      0.893
> 29      0                               osd.29  up      0
> ...
>
> osd.29 is marked as up and can't be unmountet, because it's in use. If I
> kill the osd-process, they will automaticly restarted just in time.

"ceph osd set noup" will prevent osd's from becoming up. Later remember
to run "ceph osd unset noup".

You can stop OSD with "stop ceph-osd id=29".

> My ceph-version is
> ceph --version
> ceph version 0.72.2 (a913ded2ff138aefb8cb84d347d72164099cfd60)
>
> The OSD-node is an "Linux ceph-02 3.11.0-15-generic #25~precise1-Ubuntu"
>
> Any hints?
>
> The ugly way is simple remove the unused OSD - but I want to know how
> should this normaly work.
>
> Udo
> _______________________________________________
> ceph-users mailing list
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> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

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