20 Jan
2020
20 Jan
'20
12:07 a.m.
Hi,
We upgraded our cluster from Jewel to Luminous, and it turned out that more than 80%
object misplaced. Since our cluster has 130T data, backfilling seems take forever. We
didn’t modify any crushmap. Any thoughts about this issue?
br,
Xu Yun
20 Jan
20 Jan
2:19 p.m.
On 1/20/20 1:07 AM, 徐蕴 wrote:
Hi,
We upgraded our cluster from Jewel to Luminous, and it turned out that more than 80%
object misplaced. Since our cluster has 130T data, backfilling seems take forever. We
didn’t modify any crushmap. Any thoughts about this issue?
Did you reweight your OSDs prior to the upgrade?
Otherwise it is probably the case that the reweights of the OSDs were
set back to 1 causing this data migration.
Or did somebody run:
$ ceph osd crush tunables optimal
Wido
>
> br,
> Xu Yun
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> ceph-users mailing list -- ceph-users(a)ceph.io
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21 Jan
21 Jan
12:40 a.m.
Yes, reweight a lot before the upgrade. But from the output of ceph osd df, the reweight
values were kept instead of 1 after the upgrade. Of course, the old reweight values are
meaningless after the mass data migration.
br,
Xu Yun
2020年1月20日 下午10:19，Wido den Hollander
<wido(a)42on.com> 写道：
On 1/20/20 1:07 AM, 徐蕴 wrote:
Hi,
We upgraded our cluster from Jewel to Luminous, and it turned out that more than 80%
object misplaced. Since our cluster has 130T data, backfilling seems take forever. We
didn’t modify any crushmap. Any thoughts about this issue?
Did you reweight your OSDs prior to the upgrade?
Otherwise it is probably the case that the reweights of the OSDs were
set back to 1 causing this data migration.
Or did somebody run:
$ ceph osd crush tunables optimal
Wido
>
> br,
> Xu Yun
> _______________________________________________
> ceph-users mailing list -- ceph-users(a)ceph.io
> To unsubscribe send an email to ceph-users-leave(a)ceph.io
>
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徐蕴