[ceph-users] RGW: ERROR: failed to distribute cache

Wido den Hollander wido at 42on.com
Mon Nov 6 07:29:09 PST 2017


Hi,

On a Ceph Luminous (12.2.1) environment I'm seeing RGWs stall and about the same time I see these errors in the RGW logs:

2017-11-06 15:50:24.859919 7f8f5fa1a700  0 ERROR: failed to distribute cache for gn1-pf.rgw.data.root:.bucket.meta.XXXXX:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.20
2017-11-06 15:50:41.768881 7f8f7824b700  0 ERROR: failed to distribute cache for gn1-pf.rgw.data.root:XXXXX
2017-11-06 15:55:15.781739 7f8f7824b700  0 ERROR: failed to distribute cache for gn1-pf.rgw.meta:.meta:bucket.instance:XXXXX:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32:_XK5LExyXXXXX6EEIXxCD5Cws:1
2017-11-06 15:55:25.784404 7f8f7824b700  0 ERROR: failed to distribute cache for gn1-pf.rgw.data.root:.bucket.meta.XXXXX:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32

I see one message from a year ago: http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-June/010531.html

The setup has two RGWs running:

- ceph-rgw1
- ceph-rgw2

While trying to figure this out I see that a "radosgw-admin period pull" hangs for ever.

I don't know if that is related, but it's something I've noticed.

Mainly I see that at random times the RGW stalls for about 30 seconds and while that happens these messages show up in the RGW's log.

Is anybody else running into this issue?

Wido


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